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247 files changed, 1106 insertions, 607 deletions
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@@ -44,6 +44,7 @@ global_group, global_search, group, + group_history, heart, hipe_unified_loader, inet6_tcp, diff --git a/bootstrap/lib/kernel/ebin/kernel.beam b/bootstrap/lib/kernel/ebin/kernel.beam Binary files differindex 6bb295a61a..d4170b3652 100644 --- a/bootstrap/lib/kernel/ebin/kernel.beam +++ b/bootstrap/lib/kernel/ebin/kernel.beam diff --git a/bootstrap/lib/kernel/ebin/kernel_config.beam b/bootstrap/lib/kernel/ebin/kernel_config.beam Binary files differindex 90b62dd556..ddd47e7ad8 100644 --- a/bootstrap/lib/kernel/ebin/kernel_config.beam +++ b/bootstrap/lib/kernel/ebin/kernel_config.beam diff --git a/bootstrap/lib/kernel/ebin/local_tcp.beam b/bootstrap/lib/kernel/ebin/local_tcp.beam Binary files differindex f3b3291ad1..7d4e10d93f 100644 --- a/bootstrap/lib/kernel/ebin/local_tcp.beam +++ b/bootstrap/lib/kernel/ebin/local_tcp.beam diff --git a/bootstrap/lib/kernel/ebin/local_udp.beam b/bootstrap/lib/kernel/ebin/local_udp.beam Binary files differindex 0ddae3a57a..798eeeb7f6 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b/bootstrap/lib/stdlib/ebin/sofs.beam diff --git a/bootstrap/lib/stdlib/ebin/stdlib.app b/bootstrap/lib/stdlib/ebin/stdlib.app index ed73fa6985..33e8de4d90 100644 --- a/bootstrap/lib/stdlib/ebin/stdlib.app +++ b/bootstrap/lib/stdlib/ebin/stdlib.app @@ -2,7 +2,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2016. All Rights Reserved. +%% Copyright Ericsson AB 1996-2017. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. diff --git a/bootstrap/lib/stdlib/ebin/string.beam b/bootstrap/lib/stdlib/ebin/string.beam Binary files differindex 65fb114b50..5d48ed2bcd 100644 --- a/bootstrap/lib/stdlib/ebin/string.beam +++ b/bootstrap/lib/stdlib/ebin/string.beam diff --git a/bootstrap/lib/stdlib/ebin/supervisor.beam b/bootstrap/lib/stdlib/ebin/supervisor.beam Binary files differindex e11d7c9375..7833f18605 100644 --- a/bootstrap/lib/stdlib/ebin/supervisor.beam +++ b/bootstrap/lib/stdlib/ebin/supervisor.beam diff --git a/bootstrap/lib/stdlib/ebin/supervisor_bridge.beam b/bootstrap/lib/stdlib/ebin/supervisor_bridge.beam Binary files differindex a6019f18af..714f92dc7c 100644 --- a/bootstrap/lib/stdlib/ebin/supervisor_bridge.beam +++ b/bootstrap/lib/stdlib/ebin/supervisor_bridge.beam diff --git a/bootstrap/lib/stdlib/ebin/sys.beam b/bootstrap/lib/stdlib/ebin/sys.beam Binary files differindex de5443003f..37dceb7660 100644 --- a/bootstrap/lib/stdlib/ebin/sys.beam +++ b/bootstrap/lib/stdlib/ebin/sys.beam diff --git a/bootstrap/lib/stdlib/ebin/timer.beam b/bootstrap/lib/stdlib/ebin/timer.beam Binary files differindex a1803b06b5..24145e81d6 100644 --- a/bootstrap/lib/stdlib/ebin/timer.beam +++ b/bootstrap/lib/stdlib/ebin/timer.beam diff --git a/bootstrap/lib/stdlib/ebin/unicode.beam b/bootstrap/lib/stdlib/ebin/unicode.beam Binary files differindex d58ad7564e..359e1b9fdf 100644 --- a/bootstrap/lib/stdlib/ebin/unicode.beam +++ b/bootstrap/lib/stdlib/ebin/unicode.beam diff --git a/bootstrap/lib/stdlib/ebin/unicode_util.beam b/bootstrap/lib/stdlib/ebin/unicode_util.beam Binary files differindex 3251926a9c..7771cb469c 100644 --- a/bootstrap/lib/stdlib/ebin/unicode_util.beam +++ b/bootstrap/lib/stdlib/ebin/unicode_util.beam diff --git a/bootstrap/lib/stdlib/ebin/win32reg.beam b/bootstrap/lib/stdlib/ebin/win32reg.beam Binary files differindex 289ca96f59..c5369b13c3 100644 --- a/bootstrap/lib/stdlib/ebin/win32reg.beam +++ b/bootstrap/lib/stdlib/ebin/win32reg.beam diff --git a/bootstrap/lib/stdlib/ebin/zip.beam b/bootstrap/lib/stdlib/ebin/zip.beam Binary files differindex 09f873d8fa..032df45451 100644 --- a/bootstrap/lib/stdlib/ebin/zip.beam +++ b/bootstrap/lib/stdlib/ebin/zip.beam diff --git a/erts/doc/src/erl_nif.xml b/erts/doc/src/erl_nif.xml index 51ba70994a..3eb3e04f33 100644 --- a/erts/doc/src/erl_nif.xml +++ b/erts/doc/src/erl_nif.xml @@ -714,6 +714,7 @@ typedef struct { typedef struct { ErlNifResourceDtor* dtor; ErlNifResourceStop* stop; + ErlNifResourceDown* down; } ErlNifResourceTypeInit;</code> <p>Initialization structure read by <seealso marker="#enif_open_resource_type_x"> enif_open_resource_type_x</seealso>.</p> @@ -1395,13 +1396,12 @@ typedef enum { <p>Returns <c>true</c> if a pending exception is associated with the environment <c>env</c>. If <c>reason</c> is a <c>NULL</c> pointer, ignore it. Otherwise, if a pending exception associated with - <c>env</c> exists, set <c>ERL_NIF_TERM</c> to which <c>reason</c> - points to the value of the exception's term. For example, if - <seealso marker="#enif_make_badarg"> + <c>env</c> exists, set <c>*reason</c> to the value of the exception + term. For example, if <seealso marker="#enif_make_badarg"> <c>enif_make_badarg</c></seealso> is called to set a pending <c>badarg</c> exception, a later call to <c>enif_has_pending_exception(env, &reason)</c> sets - <c>reason</c> to the atom <c>badarg</c>, then return <c>true</c>.</p> + <c>*reason</c> to the atom <c>badarg</c>, then return <c>true</c>.</p> <p>See also <seealso marker="#enif_make_badarg"> <c>enif_make_badarg</c></seealso> and <seealso marker="#enif_raise_exception"> @@ -2384,20 +2384,23 @@ enif_map_iterator_destroy(env, &iter);</code> called in the two callbacks <seealso marker="#load"><c>load</c></seealso> and <seealso marker="#upgrade"><c>upgrade</c></seealso>.</p> + <p>See also <seealso marker="#enif_open_resource_type_x"> + <c>enif_open_resource_type_x</c></seealso>.</p> </desc> </func> <func> <name><ret>ErlNifResourceType *</ret> <nametext>enif_open_resource_type_x(ErlNifEnv* env, const char* name, - ErlNifResourceTypeInit* init, + const ErlNifResourceTypeInit* init, ErlNifResourceFlags flags, ErlNifResourceFlags* tried)</nametext> </name> <fsummary>Create or takeover a resource type.</fsummary> <desc> <p>Same as <seealso marker="#enif_open_resource_type"><c>enif_open_resource_type</c></seealso> - except is also accept a <c>stop</c> callback for resource types that are - used together with <seealso marker="#enif_select"><c>enif_select</c></seealso>.</p> + except it accepts additional callback functions for resource types that are + used together with <seealso marker="#enif_select"><c>enif_select</c></seealso> + and <seealso marker="#enif_monitor_process"><c>enif_monitor_process</c></seealso>.</p> <p>Argument <c>init</c> is a pointer to an <seealso marker="#ErlNifResourceTypeInit"><c>ErlNifResourceTypeInit</c></seealso> structure that contains the function pointers for destructor, down and stop callbacks @@ -2695,6 +2698,21 @@ enif_map_iterator_destroy(env, &iter);</code> the event object. This safe way of closing event objects must be used even if all notifications have been received and no further calls to <c>enif_select</c> have been made.</p> + <p>The first call to <c>enif_select</c> for a specific OS <c>event</c> will establish + a relation between the event object and the containing resource. All subsequent calls + for an <c>event</c> must pass its containing resource as argument + <c>obj</c>. The relation is dissolved when <c>enif_select</c> has + been called with <c>mode</c> as <c>ERL_NIF_SELECT_STOP</c> and the + corresponding <c>stop</c> callback has returned. A resource can contain + several event objects but one event object can only be contained within + one resource. A resource will not be destructed until all its contained relations + have been dissolved.</p> + <note> + <p>Use <seealso marker="#enif_monitor_process"><c>enif_monitor_process</c></seealso> + together with <c>enif_select</c> to detect failing Erlang + processes and prevent them from causing permanent leakage of resources + and their contained OS event objects.</p> + </note> <p>Returns a non-negative value on success where the following bits can be set:</p> <taglist> <tag><c>ERL_NIF_SELECT_STOP_CALLED</c></tag> diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml index 6d165e9eff..d9cc5ef936 100644 --- a/erts/doc/src/erlang.xml +++ b/erts/doc/src/erlang.xml @@ -6148,28 +6148,60 @@ true</pre> <fsummary>Information about active processes and ports.</fsummary> <desc> <marker id="statistics_active_tasks"></marker> + <p>Returns the same as + <seealso marker="#statistics_active_tasks_all"> + <c>statistics(active_tasks_all)</c></seealso> + with the exception that no information about the dirty + IO run queue and its associated schedulers is part of + the result. That is, only tasks that are expected to be + CPU bound are part of the result.</p> + </desc> + </func> + + <func> + <name name="statistics" arity="1" clause_i="2"/> + <fsummary>Information about active processes and ports.</fsummary> + <desc> + <marker id="statistics_active_tasks_all"></marker> <p>Returns a list where each element represents the amount of active processes and ports on each run queue and its - associated scheduler. That is, the number of processes and - ports that are ready to run, or are currently running. The - element location in the list corresponds to the scheduler - and its run queue. The first element corresponds to scheduler - number 1 and so on. The information is <em>not</em> gathered - atomically. That is, the result is not necessarily a - consistent snapshot of the state, but instead quite - efficiently gathered.</p> + associated schedulers. That is, the number of processes and + ports that are ready to run, or are currently running. + Values for normal run queues and their associated schedulers + are located first in the resulting list. The first element + corresponds to scheduler number 1 and so on. If support for + dirty schedulers exist, an element with the value for the + dirty CPU run queue and its associated dirty CPU schedulers + follow and then as last element the value for the the dirty + IO run queue and its associated dirty IO schedulers follow. + The information is <em>not</em> gathered atomically. That is, + the result is not necessarily a consistent snapshot of the + state, but instead quite efficiently gathered.</p> + <note><p>Each normal scheduler has one run queue that it + manages. If dirty schedulers schedulers are supported, all + dirty CPU schedulers share one run queue, and all dirty IO + schedulers share one run queue. That is, we have multiple + normal run queues, one dirty CPU run queue and one dirty + IO run queue. Work can <em>not</em> migrate between the + different types of run queues. Only work in normal run + queues can migrate to other normal run queues. This has + to be taken into account when evaluating the result.</p></note> <p>See also <seealso marker="#statistics_total_active_tasks"> <c>statistics(total_active_tasks)</c></seealso>, <seealso marker="#statistics_run_queue_lengths"> - <c>statistics(run_queue_lengths)</c></seealso>, and + <c>statistics(run_queue_lengths)</c></seealso>, + <seealso marker="#statistics_run_queue_lengths_all"> + <c>statistics(run_queue_lengths_all)</c></seealso>, <seealso marker="#statistics_total_run_queue_lengths"> - <c>statistics(total_run_queue_lengths)</c></seealso>.</p> + <c>statistics(total_run_queue_lengths)</c></seealso>, and + <seealso marker="#statistics_total_run_queue_lengths_all"> + <c>statistics(total_run_queue_lengths_all)</c></seealso>.</p> </desc> </func> <func> - <name name="statistics" arity="1" clause_i="2"/> + <name name="statistics" arity="1" clause_i="3"/> <fsummary>Information about context switches.</fsummary> <desc> <p>Returns the total number of context switches since the @@ -6178,7 +6210,7 @@ true</pre> </func> <func> - <name name="statistics" arity="1" clause_i="3"/> + <name name="statistics" arity="1" clause_i="4"/> <fsummary>Information about exact reductions.</fsummary> <desc> <marker id="statistics_exact_reductions"></marker> @@ -6194,7 +6226,7 @@ true</pre> </func> <func> - <name name="statistics" arity="1" clause_i="4"/> + <name name="statistics" arity="1" clause_i="5"/> <fsummary>Information about garbage collection.</fsummary> <desc> <p>Returns information about garbage collection, for example:</p> @@ -6206,7 +6238,7 @@ true</pre> </func> <func> - <name name="statistics" arity="1" clause_i="5"/> + <name name="statistics" arity="1" clause_i="6"/> <fsummary>Information about I/O.</fsummary> <desc> <p>Returns <c><anno>Input</anno></c>, @@ -6217,7 +6249,7 @@ true</pre> </func> <func> - <name name="statistics" arity="1" clause_i="6"/> + <name name="statistics" arity="1" clause_i="7"/> <fsummary>Information about microstate accounting.</fsummary> <desc> <marker id="statistics_microstate_accounting"></marker> @@ -6353,7 +6385,7 @@ lists:map( </func> <func> - <name name="statistics" arity="1" clause_i="7"/> + <name name="statistics" arity="1" clause_i="8"/> <fsummary>Information about reductions.</fsummary> <desc> <marker id="statistics_reductions"></marker> @@ -6372,12 +6404,13 @@ lists:map( </func> <func> - <name name="statistics" arity="1" clause_i="8"/> + <name name="statistics" arity="1" clause_i="9"/> <fsummary>Information about the run-queues.</fsummary> <desc><marker id="statistics_run_queue"></marker> - <p>Returns the total length of the run-queues. That is, the number + <p>Returns the total length of all normal run-queues. That is, the number of processes and ports that are ready to run on all available - run-queues. The information is gathered atomically. That + normal run-queues. Dirty run queues are not part of the + result. The information is gathered atomically. That is, the result is a consistent snapshot of the state, but this operation is much more expensive compared to <seealso marker="#statistics_total_run_queue_lengths"> @@ -6387,29 +6420,63 @@ lists:map( </func> <func> - <name name="statistics" arity="1" clause_i="9"/> + <name name="statistics" arity="1" clause_i="10"/> <fsummary>Information about the run-queue lengths.</fsummary> <desc><marker id="statistics_run_queue_lengths"></marker> + <p>Returns the same as + <seealso marker="#statistics_run_queue_lengths_all"> + <c>statistics(run_queue_lengths_all)</c></seealso> + with the exception that no information about the dirty + IO run queue is part of the result. That is, only + run queues with work that is expected to be CPU bound + is part of the result.</p> + </desc> + </func> + + <func> + <name name="statistics" arity="1" clause_i="11"/> + <fsummary>Information about the run-queue lengths.</fsummary> + <desc><marker id="statistics_run_queue_lengths_all"></marker> <p>Returns a list where each element represents the amount - of processes and ports ready to run for each run queue. The - element location in the list corresponds to the run queue - of a scheduler. The first element corresponds to the run - queue of scheduler number 1 and so on. The information is - <em>not</em> gathered atomically. That is, the result is - not necessarily a consistent snapshot of the state, but - instead quite efficiently gathered.</p> + of processes and ports ready to run for each run queue. + Values for normal run queues are located first in the + resulting list. The first element corresponds to the + normal run queue of scheduler number 1 and so on. If + support for dirty schedulers exist, values for the dirty + CPU run queue and the dirty IO run queue follow (in that + order) at the end. The information is <em>not</em> + gathered atomically. That is, the result is not + necessarily a consistent snapshot of the state, but + instead quite efficiently gathered.</p> + <note><p>Each normal scheduler has one run queue that it + manages. If dirty schedulers schedulers are supported, all + dirty CPU schedulers share one run queue, and all dirty IO + schedulers share one run queue. That is, we have multiple + normal run queues, one dirty CPU run queue and one dirty + IO run queue. Work can <em>not</em> migrate between the + different types of run queues. Only work in normal run + queues can migrate to other normal run queues. This has + to be taken into account when evaluating the result.</p></note> <p>See also + <seealso marker="#statistics_run_queue_lengths"> + <c>statistics(run_queue_lengths)</c></seealso>, + <seealso marker="#statistics_total_run_queue_lengths_all"> + <c>statistics(total_run_queue_lengths_all)</c></seealso>, <seealso marker="#statistics_total_run_queue_lengths"> <c>statistics(total_run_queue_lengths)</c></seealso>, <seealso marker="#statistics_active_tasks"> - <c>statistics(active_tasks)</c></seealso>, and + <c>statistics(active_tasks)</c></seealso>, + <seealso marker="#statistics_active_tasks_all"> + <c>statistics(active_tasks_all)</c></seealso>, and <seealso marker="#statistics_total_active_tasks"> - <c>statistics(total_active_tasks)</c></seealso>.</p> + <c>statistics(total_active_tasks)</c></seealso>, + <seealso marker="#statistics_total_active_tasks_all"> + <c>statistics(total_active_tasks_all)</c></seealso>.</p> </desc> </func> <func> - <name name="statistics" arity="1" clause_i="10"/> + <name name="statistics" arity="1" clause_i="12"/> <fsummary>Information about runtime.</fsummary> <desc> <p>Returns information about runtime, in milliseconds.</p> @@ -6424,7 +6491,7 @@ lists:map( </func> <func> - <name name="statistics" arity="1" clause_i="11"/> + <name name="statistics" arity="1" clause_i="13"/> <fsummary>Information about each schedulers work time.</fsummary> <desc> <marker id="statistics_scheduler_wall_time"></marker> @@ -6545,7 +6612,7 @@ ok </func> <func> - <name name="statistics" arity="1" clause_i="12"/> + <name name="statistics" arity="1" clause_i="14"/> <fsummary>Information about each schedulers work time.</fsummary> <desc> <marker id="statistics_scheduler_wall_time_all"></marker> @@ -6570,47 +6637,47 @@ ok </desc> </func> <func> - <name name="statistics" arity="1" clause_i="13"/> + <name name="statistics" arity="1" clause_i="15"/> <fsummary>Information about active processes and ports.</fsummary> <desc><marker id="statistics_total_active_tasks"></marker> - <p>Returns the total amount of active processes and ports in - the system. That is, the number of processes and ports that - are ready to run, or are currently running. The information - is <em>not</em> gathered atomically. That is, the result - is not necessarily a consistent snapshot of the state, but - instead quite efficiently gathered.</p> - <p>See also - <seealso marker="#statistics_active_tasks"> - <c>statistics(active_tasks)</c></seealso>, - <seealso marker="#statistics_run_queue_lengths"> - <c>statistics(run_queue_lengths)</c></seealso>, and - <seealso marker="#statistics_total_run_queue_lengths"> - <c>statistics(total_run_queue_lengths)</c></seealso>.</p> + <p>The same as calling + <c>lists:sum(</c><seealso marker="#statistics_active_tasks"><c>statistics(active_tasks)</c></seealso><c>)</c>, + but more efficient.</p> </desc> </func> <func> - <name name="statistics" arity="1" clause_i="14"/> + <name name="statistics" arity="1" clause_i="16"/> + <fsummary>Information about active processes and ports.</fsummary> + <desc><marker id="statistics_total_active_tasks_all"></marker> + <p>The same as calling + <c>lists:sum(</c><seealso marker="#statistics_active_tasks_all"><c>statistics(active_tasks_all)</c></seealso><c>)</c>, + but more efficient.</p> + </desc> + </func> + + <func> + <name name="statistics" arity="1" clause_i="17"/> <fsummary>Information about the run-queue lengths.</fsummary> <desc><marker id="statistics_total_run_queue_lengths"></marker> - <p>Returns the total length of the run queues. That is, the number - of processes and ports that are ready to run on all available - run queues. The information is <em>not</em> gathered atomically. - That is, the result is not necessarily a consistent snapshot of - the state, but much more efficiently gathered compared to - <seealso marker="#statistics_run_queue"> - <c>statistics(run_queue)</c></seealso>.</p> - <p>See also <seealso marker="#statistics_run_queue_lengths"> - <c>statistics(run_queue_lengths)</c></seealso>, - <seealso marker="#statistics_total_active_tasks"> - <c>statistics(total_active_tasks)</c></seealso>, and - <seealso marker="#statistics_active_tasks"> - <c>statistics(active_tasks)</c></seealso>.</p> + <p>The same as calling + <c>lists:sum(</c><seealso marker="#statistics_run_queue_lengths"><c>statistics(run_queue_lengths)</c></seealso><c>)</c>, + but more efficient.</p> </desc> </func> <func> - <name name="statistics" arity="1" clause_i="15"/> + <name name="statistics" arity="1" clause_i="18"/> + <fsummary>Information about the run-queue lengths.</fsummary> + <desc><marker id="statistics_total_run_queue_lengths_all"></marker> + <p>The same as calling + <c>lists:sum(</c><seealso marker="#statistics_run_queue_lengths_all"><c>statistics(run_queue_lengths_all)</c></seealso><c>)</c>, + but more efficient.</p> + </desc> + </func> + + <func> + <name name="statistics" arity="1" clause_i="19"/> <fsummary>Information about wall clock.</fsummary> <desc> <p>Returns information about wall clock. <c>wall_clock</c> can diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names index 477a7676d6..a44d23b181 100644 --- a/erts/emulator/beam/atom.names +++ b/erts/emulator/beam/atom.names @@ -76,6 +76,7 @@ atom ac atom accessor atom active atom active_tasks +atom active_tasks_all atom alive atom all atom all_but_first @@ -567,6 +568,7 @@ atom return_to atom return_trace atom run_queue atom run_queue_lengths +atom run_queue_lengths_all atom runnable atom runnable_ports atom runnable_procs @@ -656,8 +658,10 @@ atom Times='*' atom timestamp atom total atom total_active_tasks +atom total_active_tasks_all atom total_heap_size atom total_run_queue_lengths +atom total_run_queue_lengths_all atom tpkt atom trace trace_ts traced atom trace_control_word diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c index a90e6a0ba8..79d751d13e 100644 --- a/erts/emulator/beam/beam_emu.c +++ b/erts/emulator/beam/beam_emu.c @@ -158,7 +158,9 @@ do { \ /* * Register target (X or Y register). */ -#define REG_TARGET(Target) (*(((Target) & 1) ? &yb(Target-1) : &xb(Target))) + +#define REG_TARGET_PTR(Target) (((Target) & 1) ? &yb(Target-1) : &xb(Target)) +#define REG_TARGET(Target) (*REG_TARGET_PTR(Target)) /* * Store a result into a register given a destination descriptor. @@ -172,8 +174,6 @@ do { \ REG_TARGET(stb_reg) = (Result); \ } while (0) -#define StoreSimpleDest(Src, Dest) Dest = (Src) - /* * Store a result into a register and execute the next instruction. * Dst points to the word with a destination descriptor, which MUST @@ -420,7 +420,7 @@ void** beam_ops; #define TestHeapPutList(Need, Reg) \ do { \ TestHeap((Need), 1); \ - PutList(Reg, r(0), r(0), StoreSimpleDest); \ + PutList(Reg, r(0), r(0)); \ CHECK_TERM(r(0)); \ } while (0) @@ -547,11 +547,11 @@ void** beam_ops; GetR((N)+1, Dst2); \ } while (0) -#define PutList(H, T, Dst, Store) \ - do { \ - HTOP[0] = (H); HTOP[1] = (T); \ - Store(make_list(HTOP), Dst); \ - HTOP += 2; \ +#define PutList(H, T, Dst) \ + do { \ + HTOP[0] = (H); HTOP[1] = (T); \ + Dst = make_list(HTOP); \ + HTOP += 2; \ } while (0) #define Swap(R1, R2) \ @@ -568,11 +568,7 @@ void** beam_ops; R2 = Tmp = V; \ } while (0) -#define Move(Src, Dst, Store) \ - do { \ - Eterm term = (Src); \ - Store(term, Dst); \ - } while (0) +#define Move(Src, Dst) Dst = (Src) #define Move2Par(S1, D1, S2, D2) \ do { \ @@ -911,7 +907,7 @@ do { \ Target = _uint_size * Unit; \ } while (0) -#define BsGetFloat2(Ms, Live, Sz, Flags, Dst, Store, Fail) \ +#define BsGetFloat2(Ms, Live, Sz, Flags, Dst, Fail) \ do { \ ErlBinMatchBuffer *_mb; \ Eterm _result; Sint _size; \ @@ -922,12 +918,12 @@ do { \ LIGHT_SWAPOUT; \ _result = erts_bs_get_float_2(c_p, _size, (Flags), _mb); \ LIGHT_SWAPIN; \ - HEAP_SPACE_VERIFIED(0); \ + HEAP_SPACE_VERIFIED(0); \ if (is_non_value(_result)) { Fail; } \ - else { Store(_result, Dst); } \ + else { Dst = _result; } \ } while (0) -#define BsGetBinaryImm_2(Ms, Live, Sz, Flags, Dst, Store, Fail) \ +#define BsGetBinaryImm_2(Ms, Live, Sz, Flags, Dst, Fail) \ do { \ ErlBinMatchBuffer *_mb; \ Eterm _result; \ @@ -936,12 +932,12 @@ do { \ LIGHT_SWAPOUT; \ _result = erts_bs_get_binary_2(c_p, (Sz), (Flags), _mb); \ LIGHT_SWAPIN; \ - HEAP_SPACE_VERIFIED(0); \ + HEAP_SPACE_VERIFIED(0); \ if (is_non_value(_result)) { Fail; } \ - else { Store(_result, Dst); } \ + else { Dst = _result; } \ } while (0) -#define BsGetBinary_2(Ms, Live, Sz, Flags, Dst, Store, Fail) \ +#define BsGetBinary_2(Ms, Live, Sz, Flags, Dst, Fail) \ do { \ ErlBinMatchBuffer *_mb; \ Eterm _result; Uint _size; \ @@ -951,27 +947,27 @@ do { \ LIGHT_SWAPOUT; \ _result = erts_bs_get_binary_2(c_p, _size, (Flags), _mb); \ LIGHT_SWAPIN; \ - HEAP_SPACE_VERIFIED(0); \ + HEAP_SPACE_VERIFIED(0); \ if (is_non_value(_result)) { Fail; } \ - else { Store(_result, Dst); } \ + else { Dst = _result; } \ } while (0) -#define BsGetBinaryAll_2(Ms, Live, Unit, Dst, Store, Fail) \ - do { \ - ErlBinMatchBuffer *_mb; \ - Eterm _result; \ - TestHeap(ERL_SUB_BIN_SIZE, Live); \ - _mb = ms_matchbuffer(Ms); \ - if (((_mb->size - _mb->offset) % Unit) == 0) { \ - LIGHT_SWAPOUT; \ - _result = erts_bs_get_binary_all_2(c_p, _mb); \ - LIGHT_SWAPIN; \ - HEAP_SPACE_VERIFIED(0); \ - ASSERT(is_value(_result)); \ - Store(_result, Dst); \ - } else { \ - HEAP_SPACE_VERIFIED(0); \ - Fail; } \ +#define BsGetBinaryAll_2(Ms, Live, Unit, Dst, Fail) \ + do { \ + ErlBinMatchBuffer *_mb; \ + Eterm _result; \ + TestHeap(ERL_SUB_BIN_SIZE, Live); \ + _mb = ms_matchbuffer(Ms); \ + if (((_mb->size - _mb->offset) % Unit) == 0) { \ + LIGHT_SWAPOUT; \ + _result = erts_bs_get_binary_all_2(c_p, _mb); \ + LIGHT_SWAPIN; \ + HEAP_SPACE_VERIFIED(0); \ + ASSERT(is_value(_result)); \ + Dst = _result; \ + } else { \ + HEAP_SPACE_VERIFIED(0); \ + Fail; } \ } while (0) #define BsSkipBits2(Ms, Bits, Unit, Fail) \ diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c index 5fc70dfc02..e2773475b0 100644 --- a/erts/emulator/beam/erl_bif_info.c +++ b/erts/emulator/beam/erl_bif_info.c @@ -3450,9 +3450,15 @@ BIF_RETTYPE statistics_1(BIF_ALIST_1) if (is_non_value(res)) BIF_RET(am_undefined); BIF_TRAP1(gather_sched_wall_time_res_trap, BIF_P, res); - } else if (BIF_ARG_1 == am_total_active_tasks - || BIF_ARG_1 == am_total_run_queue_lengths) { - Uint no = erts_run_queues_len(NULL, 0, BIF_ARG_1 == am_total_active_tasks); + } else if ((BIF_ARG_1 == am_total_active_tasks) + | (BIF_ARG_1 == am_total_run_queue_lengths) + | (BIF_ARG_1 == am_total_active_tasks_all) + | (BIF_ARG_1 == am_total_run_queue_lengths_all)) { + Uint no = erts_run_queues_len(NULL, 0, + ((BIF_ARG_1 == am_total_active_tasks) + | (BIF_ARG_1 == am_total_active_tasks_all)), + ((BIF_ARG_1 == am_total_active_tasks_all) + | (BIF_ARG_1 == am_total_run_queue_lengths_all))); if (IS_USMALL(0, no)) res = make_small(no); else { @@ -3460,13 +3466,21 @@ BIF_RETTYPE statistics_1(BIF_ALIST_1) res = uint_to_big(no, hp); } BIF_RET(res); - } else if (BIF_ARG_1 == am_active_tasks - || BIF_ARG_1 == am_run_queue_lengths) { + } else if ((BIF_ARG_1 == am_active_tasks) + | (BIF_ARG_1 == am_run_queue_lengths) + | (BIF_ARG_1 == am_active_tasks_all) + | (BIF_ARG_1 == am_run_queue_lengths_all)) { Eterm res, *hp, **hpp; Uint sz, *szp; - int no_qs = erts_no_run_queues; + int incl_dirty_io = ((BIF_ARG_1 == am_active_tasks_all) + | (BIF_ARG_1 == am_run_queue_lengths_all)); + int no_qs = (erts_no_run_queues + ERTS_NUM_DIRTY_CPU_RUNQS + + (incl_dirty_io ? ERTS_NUM_DIRTY_IO_RUNQS : 0)); Uint *qszs = erts_alloc(ERTS_ALC_T_TMP,sizeof(Uint)*no_qs*2); - (void) erts_run_queues_len(qszs, 0, BIF_ARG_1 == am_active_tasks); + (void) erts_run_queues_len(qszs, 0, + ((BIF_ARG_1 == am_active_tasks) + | (BIF_ARG_1 == am_active_tasks_all)), + incl_dirty_io); sz = 0; szp = &sz; hpp = NULL; @@ -3539,7 +3553,7 @@ BIF_RETTYPE statistics_1(BIF_ALIST_1) res = TUPLE2(hp, b1, b2); BIF_RET(res); } else if (BIF_ARG_1 == am_run_queue) { - res = erts_run_queues_len(NULL, 1, 0); + res = erts_run_queues_len(NULL, 1, 0, 0); BIF_RET(make_small(res)); } else if (BIF_ARG_1 == am_wall_clock) { UWord w1, w2; @@ -3557,9 +3571,9 @@ BIF_RETTYPE statistics_1(BIF_ALIST_1) else if (ERTS_IS_ATOM_STR("run_queues", BIF_ARG_1)) { Eterm res, *hp, **hpp; Uint sz, *szp; - int no_qs = erts_no_run_queues; + int no_qs = erts_no_run_queues + ERTS_NUM_DIRTY_RUNQS; Uint *qszs = erts_alloc(ERTS_ALC_T_TMP,sizeof(Uint)*no_qs*2); - (void) erts_run_queues_len(qszs, 0, 0); + (void) erts_run_queues_len(qszs, 0, 0, 1); sz = 0; szp = &sz; hpp = NULL; diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c index da27c7e7c6..7952e3031d 100644 --- a/erts/emulator/beam/erl_process.c +++ b/erts/emulator/beam/erl_process.c @@ -405,13 +405,59 @@ static erts_atomic_t runq_supervisor_sleeping; ErtsSchedulerData *erts_scheduler_data; #endif -ErtsAlignedRunQueue *erts_aligned_run_queues; -Uint erts_no_run_queues; +ErtsAlignedRunQueue * ERTS_WRITE_UNLIKELY(erts_aligned_run_queues); +Uint ERTS_WRITE_UNLIKELY(erts_no_run_queues); -ErtsAlignedSchedulerData *erts_aligned_scheduler_data; #ifdef ERTS_DIRTY_SCHEDULERS -ErtsAlignedSchedulerData *erts_aligned_dirty_cpu_scheduler_data; -ErtsAlignedSchedulerData *erts_aligned_dirty_io_scheduler_data; + +struct { + union { + erts_smp_atomic32_t active; + char align__[ERTS_CACHE_LINE_SIZE]; + } cpu; + union { + erts_smp_atomic32_t active; + char align__[ERTS_CACHE_LINE_SIZE]; + } io; +} dirty_count erts_align_attribute(ERTS_CACHE_LINE_SIZE); + +#endif + +static ERTS_INLINE void +dirty_active(ErtsSchedulerData *esdp, erts_aint32_t add) +{ +#ifdef ERTS_DIRTY_SCHEDULERS + erts_aint32_t val; + erts_smp_atomic32_t *ap; + switch (esdp->type) { + case ERTS_SCHED_DIRTY_CPU: + ap = &dirty_count.cpu.active; + break; + case ERTS_SCHED_DIRTY_IO: + ap = &dirty_count.io.active; + break; + default: + ap = NULL; + ERTS_INTERNAL_ERROR("Not a dirty scheduler"); + break; + } + + /* + * All updates done under run-queue lock, so + * no inc or dec needed... + */ + ERTS_SMP_ASSERT(erts_smp_lc_runq_is_locked(esdp->run_queue)); + + val = erts_smp_atomic32_read_nob(ap); + val += add; + erts_smp_atomic32_set_nob(ap, val); +#endif +} + +ErtsAlignedSchedulerData * ERTS_WRITE_UNLIKELY(erts_aligned_scheduler_data); +#ifdef ERTS_DIRTY_SCHEDULERS +ErtsAlignedSchedulerData * ERTS_WRITE_UNLIKELY(erts_aligned_dirty_cpu_scheduler_data); +ErtsAlignedSchedulerData * ERTS_WRITE_UNLIKELY(erts_aligned_dirty_io_scheduler_data); typedef union { Process dsp; char align[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(Process))]; @@ -539,22 +585,28 @@ do { \ } \ } while (0) -#define ERTS_ATOMIC_FOREACH_RUNQ_X(RQVAR, DO, DOX) \ +#define ERTS_ATOMIC_FOREACH_RUNQ_X(RQVAR, NRQS, DO, DOX) \ do { \ ErtsRunQueue *RQVAR; \ + int nrqs = (NRQS); \ int ix__; \ - for (ix__ = 0; ix__ < erts_no_run_queues; ix__++) { \ + for (ix__ = 0; ix__ < nrqs; ix__++) { \ RQVAR = ERTS_RUNQ_IX(ix__); \ erts_smp_runq_lock(RQVAR); \ { DO; } \ } \ { DOX; } \ - for (ix__ = 0; ix__ < erts_no_run_queues; ix__++) \ + for (ix__ = 0; ix__ < nrqs; ix__++) \ erts_smp_runq_unlock(ERTS_RUNQ_IX(ix__)); \ } while (0) -#define ERTS_ATOMIC_FOREACH_RUNQ(RQVAR, DO) \ - ERTS_ATOMIC_FOREACH_RUNQ_X(RQVAR, DO, ) +#define ERTS_ATOMIC_FOREACH_RUNQ(RQVAR, DO) \ + ERTS_ATOMIC_FOREACH_RUNQ_X(RQVAR, erts_no_run_queues + ERTS_NUM_DIRTY_RUNQS, DO, ) + +#define ERTS_ATOMIC_FOREACH_NORMAL_RUNQ(RQVAR, DO) \ + ERTS_ATOMIC_FOREACH_RUNQ_X(RQVAR, erts_no_run_queues, DO, ) + + /* * Local functions. */ @@ -2971,7 +3023,7 @@ erts_active_schedulers(void) { Uint as = erts_no_schedulers; - ERTS_ATOMIC_FOREACH_RUNQ(rq, as -= abs(rq->waiting)); + ERTS_ATOMIC_FOREACH_NORMAL_RUNQ(rq, as -= abs(rq->waiting)); return as; } @@ -3383,6 +3435,7 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) rq->sleepers.list->prev = ssi; rq->sleepers.list = ssi; erts_smp_spin_unlock(&rq->sleepers.lock); + dirty_active(esdp, -1); } #endif @@ -3724,6 +3777,9 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq) sched_active_sys(esdp->no, rq); } + if (ERTS_SCHEDULER_IS_DIRTY(esdp)) + dirty_active(esdp, 1); + ERTS_SMP_LC_ASSERT(erts_smp_lc_runq_is_locked(rq)); } @@ -6123,7 +6179,7 @@ erts_init_scheduling(int no_schedulers, int no_schedulers_online #endif ) { - int ix, n, no_ssi; + int ix, n, no_ssi, tot_rqs; char *daww_ptr; size_t daww_sz; size_t size_runqs; @@ -6156,26 +6212,19 @@ erts_init_scheduling(int no_schedulers, int no_schedulers_online /* Create and initialize run queues */ n = no_schedulers; - size_runqs = sizeof(ErtsAlignedRunQueue) * (n + ERTS_NUM_DIRTY_RUNQS); + tot_rqs = (n + ERTS_NUM_DIRTY_RUNQS); + size_runqs = sizeof(ErtsAlignedRunQueue) * tot_rqs; erts_aligned_run_queues = erts_alloc_permanent_cache_aligned(ERTS_ALC_T_RUNQS, size_runqs); #ifdef ERTS_SMP -#ifdef ERTS_DIRTY_SCHEDULERS - erts_aligned_run_queues += ERTS_NUM_DIRTY_RUNQS; -#endif erts_smp_atomic32_init_nob(&no_empty_run_queues, 0); #endif erts_no_run_queues = n; - for (ix = -(ERTS_NUM_DIRTY_RUNQS); ix < n; ix++) { + for (ix = 0; ix < tot_rqs; ix++) { int pix, rix; -#ifdef ERTS_DIRTY_SCHEDULERS - ErtsRunQueue *rq = ERTS_RUNQ_IX_IS_DIRTY(ix) ? - ERTS_DIRTY_RUNQ_IX(ix) : ERTS_RUNQ_IX(ix); -#else ErtsRunQueue *rq = ERTS_RUNQ_IX(ix); -#endif rq->ix = ix; @@ -6448,6 +6497,11 @@ erts_init_scheduling(int no_schedulers, int no_schedulers_online ERTS_SCHED_DIRTY_IO, no_dirty_io_schedulers); + erts_smp_atomic32_init_nob(&dirty_count.cpu.active, + (erts_aint32_t) no_dirty_cpu_schedulers); + erts_smp_atomic32_init_nob(&dirty_count.io.active, + (erts_aint32_t) no_dirty_io_schedulers); + #endif if (set_schdlr_sspnd_change_flags) @@ -7822,6 +7876,7 @@ suspend_scheduler(ErtsSchedulerData *esdp) #endif if (sched_type != ERTS_SCHED_NORMAL) { + dirty_active(esdp, -1); erts_smp_runq_unlock(esdp->run_queue); dirty_sched_wall_time_change(esdp, 0); } @@ -8130,7 +8185,9 @@ suspend_scheduler(ErtsSchedulerData *esdp) erts_smp_runq_lock(esdp->run_queue); non_empty_runq(esdp->run_queue); - if (sched_type == ERTS_SCHED_NORMAL) { + if (sched_type != ERTS_SCHED_NORMAL) + dirty_active(esdp, 1); + else { schedule_bound_processes(esdp->run_queue, &sbp); erts_sched_check_cpu_bind_post_suspend(esdp); @@ -9764,38 +9821,69 @@ erts_internal_is_process_executing_dirty_1(BIF_ALIST_1) BIF_RET(am_false); } +static ERTS_INLINE void +run_queues_len_aux(ErtsRunQueue *rq, Uint *tot_len, Uint *qlen, int *ip, int incl_active_sched, int locked) +{ + Sint rq_len; + + if (locked) + rq_len = (Sint) erts_smp_atomic32_read_dirty(&rq->len); + else + rq_len = (Sint) erts_smp_atomic32_read_nob(&rq->len); + ASSERT(rq_len >= 0); + + if (incl_active_sched) { +#ifdef ERTS_DIRTY_SCHEDULERS + if (ERTS_RUNQ_IX_IS_DIRTY(rq->ix)) { + erts_aint32_t dcnt; + if (ERTS_RUNQ_IS_DIRTY_CPU_RUNQ(rq)) { + dcnt = erts_smp_atomic32_read_nob(&dirty_count.cpu.active); + ASSERT(0 <= dcnt && dcnt <= erts_no_dirty_cpu_schedulers); + } + else { + ASSERT(ERTS_RUNQ_IS_DIRTY_IO_RUNQ(rq)); + dcnt = erts_smp_atomic32_read_nob(&dirty_count.io.active); + ASSERT(0 <= dcnt && dcnt <= erts_no_dirty_io_schedulers); + } + rq_len += (Sint) dcnt; + } + else +#endif + { + if (ERTS_RUNQ_FLGS_GET_NOB(rq) & ERTS_RUNQ_FLG_EXEC) + rq_len++; + } + } + if (qlen) + qlen[(*ip)++] = rq_len; + *tot_len += (Uint) rq_len; +} Uint -erts_run_queues_len(Uint *qlen, int atomic_queues_read, int incl_active_sched) +erts_run_queues_len(Uint *qlen, int atomic_queues_read, int incl_active_sched, + int incl_dirty_io) { - int i = 0; + int i = 0, j = 0; Uint len = 0; - if (atomic_queues_read) - ERTS_ATOMIC_FOREACH_RUNQ(rq, - { - Sint rq_len = (Sint) erts_smp_atomic32_read_dirty(&rq->len); - ASSERT(rq_len >= 0); - if (incl_active_sched - && (ERTS_RUNQ_FLGS_GET_NOB(rq) & ERTS_RUNQ_FLG_EXEC)) { - rq_len++; - } - if (qlen) - qlen[i++] = rq_len; - len += (Uint) rq_len; - } - ); + int no_rqs = erts_no_run_queues; + +#ifdef ERTS_DIRTY_SCHEDULERS + if (incl_dirty_io) + no_rqs += ERTS_NUM_DIRTY_RUNQS; + else + no_rqs += ERTS_NUM_DIRTY_CPU_RUNQS; +#endif + + if (atomic_queues_read) { + ERTS_ATOMIC_FOREACH_RUNQ_X(rq, no_rqs, + run_queues_len_aux(rq, &len, qlen, &j, + incl_active_sched, 1), + /* Nothing... */); + } else { - for (i = 0; i < erts_no_run_queues; i++) { + for (i = 0; i < no_rqs; i++) { ErtsRunQueue *rq = ERTS_RUNQ_IX(i); - Sint rq_len = (Sint) erts_smp_atomic32_read_nob(&rq->len); - ASSERT(rq_len >= 0); - if (incl_active_sched - && (ERTS_RUNQ_FLGS_GET_NOB(rq) & ERTS_RUNQ_FLG_EXEC)) { - rq_len++; - } - if (qlen) - qlen[i] = rq_len; - len += (Uint) rq_len; + run_queues_len_aux(rq, &len, qlen, &j, incl_active_sched, 0); } } @@ -12097,6 +12185,8 @@ erts_get_total_reductions(Uint *redsp, Uint *diffp) Uint reds = 0; ERTS_ATOMIC_FOREACH_RUNQ_X(rq, + erts_no_run_queues + ERTS_NUM_DIRTY_RUNQS, + reds += rq->procs.reductions, if (redsp) *redsp = reds; diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h index 2b169bb9ce..d44e8c252d 100644 --- a/erts/emulator/beam/erl_process.h +++ b/erts/emulator/beam/erl_process.h @@ -1541,24 +1541,29 @@ extern int erts_system_profile_ts_type; } while (0) #if defined(ERTS_DIRTY_SCHEDULERS) && defined(ERTS_SMP) -#define ERTS_NUM_DIRTY_RUNQS 2 +#define ERTS_NUM_DIRTY_CPU_RUNQS 1 +#define ERTS_NUM_DIRTY_IO_RUNQS 1 #else -#define ERTS_NUM_DIRTY_RUNQS 0 +#define ERTS_NUM_DIRTY_CPU_RUNQS 0 +#define ERTS_NUM_DIRTY_IO_RUNQS 0 #endif +#define ERTS_NUM_DIRTY_RUNQS (ERTS_NUM_DIRTY_CPU_RUNQS+ERTS_NUM_DIRTY_IO_RUNQS) + #define ERTS_RUNQ_IX(IX) \ - (ASSERT(0 <= (IX) && (IX) < erts_no_run_queues), \ + (ASSERT(0 <= (IX) && (IX) < erts_no_run_queues+ERTS_NUM_DIRTY_RUNQS), \ &erts_aligned_run_queues[(IX)].runq) #ifdef ERTS_DIRTY_SCHEDULERS #define ERTS_RUNQ_IX_IS_DIRTY(IX) \ - (-(ERTS_NUM_DIRTY_RUNQS) <= (IX) && (IX) < 0) + (ASSERT(0 <= (IX) && (IX) < erts_no_run_queues+ERTS_NUM_DIRTY_RUNQS), \ + (erts_no_run_queues <= (IX))) #define ERTS_DIRTY_RUNQ_IX(IX) \ (ASSERT(ERTS_RUNQ_IX_IS_DIRTY(IX)), \ &erts_aligned_run_queues[(IX)].runq) -#define ERTS_DIRTY_CPU_RUNQ (&erts_aligned_run_queues[-1].runq) -#define ERTS_DIRTY_IO_RUNQ (&erts_aligned_run_queues[-2].runq) -#define ERTS_RUNQ_IS_DIRTY_CPU_RUNQ(RQ) ((RQ)->ix == -1) -#define ERTS_RUNQ_IS_DIRTY_IO_RUNQ(RQ) ((RQ)->ix == -2) +#define ERTS_DIRTY_CPU_RUNQ (&erts_aligned_run_queues[erts_no_run_queues].runq) +#define ERTS_DIRTY_IO_RUNQ (&erts_aligned_run_queues[erts_no_run_queues+1].runq) +#define ERTS_RUNQ_IS_DIRTY_CPU_RUNQ(RQ) ((RQ) == ERTS_DIRTY_CPU_RUNQ) +#define ERTS_RUNQ_IS_DIRTY_IO_RUNQ(RQ) ((RQ) == ERTS_DIRTY_IO_RUNQ) #else #define ERTS_RUNQ_IX_IS_DIRTY(IX) 0 #endif @@ -1836,7 +1841,7 @@ Uint erts_active_schedulers(void); void erts_init_process(int, int, int); Eterm erts_process_state2status(erts_aint32_t); Eterm erts_process_status(Process *, Eterm); -Uint erts_run_queues_len(Uint *, int, int); +Uint erts_run_queues_len(Uint *, int, int, int); void erts_add_to_runq(Process *); Eterm erts_bound_schedulers_term(Process *c_p); Eterm erts_get_cpu_topology_term(Process *c_p, Eterm which); diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab index 9b5bd7a749..8abe871c14 100644 --- a/erts/emulator/beam/ops.tab +++ b/erts/emulator/beam/ops.tab @@ -182,15 +182,7 @@ i_jump_on_val x f I I i_jump_on_val y f I I %macro: get_list GetList -pack -get_list x x x -get_list x x y -get_list x y x -get_list x y y - -get_list y x x -get_list y x y -get_list y y x -get_list y y y +get_list xy xy xy # The following get_list instructions using x(0) are frequently used. get_list r x x @@ -218,12 +210,10 @@ set_tuple_element s d P # Get tuple element %macro: i_get_tuple_element GetTupleElement -pack -i_get_tuple_element x P x -i_get_tuple_element y P x +i_get_tuple_element xy P x %cold -i_get_tuple_element x P y -i_get_tuple_element y P y +i_get_tuple_element xy P y %hot %macro: i_get_tuple_element2 GetTupleElement2 -pack @@ -270,11 +260,7 @@ system_limit j move C=cxy x==0 | jump Lbl => move_jump Lbl C %macro: move_jump MoveJump -nonext -move_jump f n -move_jump f c -move_jump f x -move_jump f y - +move_jump f ncxy # Movement to and from the stack is common # Try to pack as much as we can into one instruction @@ -326,12 +312,10 @@ swap_temp R1 R2 Tmp | line Loc | call_ext_last Live Addr D | \ is_killed(Tmp, Live) => swap R1 R2 | line Loc | call_ext_last Live Addr D %macro: swap_temp SwapTemp -pack -swap_temp x x x -swap_temp x y x +swap_temp x xy x %macro: swap Swap -pack -swap x x -swap x y +swap x xy move Src=x D1=x | move Src=x D2=x => move_dup Src D1 D2 move Src=x SD=x | move SD=x D=x => move_dup Src SD D @@ -381,10 +365,7 @@ move_shift x y x move_shift x x y %macro: move_dup MoveDup -pack -move_dup x x x -move_dup x x y -move_dup y x x -move_dup y x y +move_dup xy x xy %macro: move2_par Move2Par -pack @@ -409,7 +390,7 @@ move3 x x x x x x move S=n D=y => init D move S=c D=y => move S x | move x D -%macro:move Move -pack -gen_dest +%macro:move Move -pack move x x move x y move y x @@ -483,8 +464,7 @@ i_is_ne_exact_literal f y c is_eq_exact Lbl Y=y X=x => is_eq_exact Lbl X Y %macro: is_eq_exact EqualExact -fail_action -pack -is_eq_exact f x x -is_eq_exact f x y +is_eq_exact f x xy is_eq_exact f s s %macro: is_lt IsLessThan -fail_action @@ -538,7 +518,7 @@ i_put_tuple y I # put_list Const=c n Dst => move Const x | put_list x n Dst -%macro:put_list PutList -pack -gen_dest +%macro:put_list PutList -pack put_list x n x put_list y n x @@ -630,9 +610,7 @@ is_tagged_tuple Fail=f c Arity Atom => jump Fail %macro:is_tagged_tuple IsTaggedTuple -fail_action -is_tagged_tuple f r A a -is_tagged_tuple f x A a -is_tagged_tuple f y A a +is_tagged_tuple f rxy A a # Test tuple & arity (head) @@ -642,21 +620,16 @@ is_tuple Fail=f S=xy | test_arity Fail=f S=xy Arity => is_tuple_of_arity Fail S %macro:is_tuple_of_arity IsTupleOfArity -fail_action -is_tuple_of_arity f r A -is_tuple_of_arity f x A -is_tuple_of_arity f y A +is_tuple_of_arity f rxy A %macro: is_tuple IsTuple -fail_action -is_tuple f r -is_tuple f x -is_tuple f y +is_tuple f rxy test_arity Fail Literal=q Arity => move Literal x | test_arity Fail x Arity test_arity Fail=f c Arity => jump Fail %macro: test_arity IsArity -fail_action -test_arity f x A -test_arity f y A +test_arity f xy A get_tuple_element Reg=x P1 D1=x | get_tuple_element Reg=x P2 D2=x | \ get_tuple_element Reg=x P3 D3=x | \ @@ -681,8 +654,7 @@ is_integer Fail=f S=x | allocate Need Regs => is_integer_allocate Fail S Need Re is_integer_allocate f x I I %macro: is_integer IsInteger -fail_action -is_integer f x -is_integer f y +is_integer f xy is_list Fail=f n => is_list Fail Literal=q => move Literal x | is_list Fail x @@ -696,8 +668,7 @@ is_list f y is_nonempty_list Fail=f S=x | allocate Need Rs => is_nonempty_list_allocate Fail S Need Rs %macro:is_nonempty_list_allocate IsNonemptyListAllocate -fail_action -pack -is_nonempty_list_allocate f r I t -is_nonempty_list_allocate f x I t +is_nonempty_list_allocate f rx I t is_nonempty_list F=f x==0 | test_heap I1 I2 => is_non_empty_list_test_heap F I1 I2 @@ -708,12 +679,10 @@ is_nonempty_list Fail=f S=x | get_list S D1=x D2=x => \ is_nonempty_list_get_list Fail S D1 D2 %macro: is_nonempty_list_get_list IsNonemptyListGetList -fail_action -pack -is_nonempty_list_get_list f r x x -is_nonempty_list_get_list f x x x +is_nonempty_list_get_list f rx x x %macro: is_nonempty_list IsNonemptyList -fail_action -is_nonempty_list f x -is_nonempty_list f y +is_nonempty_list f xy %macro: is_atom IsAtom -fail_action is_atom f x @@ -735,8 +704,7 @@ is_nil Fail=f n => is_nil Fail=f qia => jump Fail %macro: is_nil IsNil -fail_action -is_nil f x -is_nil f y +is_nil f xy is_binary Fail Literal=q => move Literal x | is_binary Fail x is_binary Fail=f c => jump Fail @@ -784,8 +752,7 @@ is_boolean Fail=f ac => jump Fail %cold %macro: is_boolean IsBoolean -fail_action -is_boolean f x -is_boolean f y +is_boolean f xy %hot is_function2 Fail=f acq Arity => jump Fail @@ -1079,8 +1046,7 @@ i_get_hash c I d i_get s d %macro: self Self -self x -self y +self xy %macro: node Node node x @@ -1091,8 +1057,7 @@ node y i_fast_element j x I d i_fast_element j y I d -i_element j x s d -i_element j y s d +i_element j xy s d bif1 f b s d bif1_body b s d @@ -1111,8 +1076,7 @@ i_move_call c f %macro:move_call MoveCall -arg_f -size -nonext move_call/2 -move_call x f -move_call y f +move_call xy f move S=c x==0 | call_last Ar P=f D => i_move_call_last P D S move S x==0 | call_last Ar P=f D => move_call_last S P D @@ -1122,8 +1086,7 @@ i_move_call_last f P c %macro:move_call_last MoveCallLast -arg_f -nonext -pack move_call_last/3 -move_call_last x f Q -move_call_last y f Q +move_call_last xy f Q move S=c x==0 | call_only Ar P=f => i_move_call_only P S move S=x x==0 | call_only Ar P=f => move_call_only S P @@ -1167,8 +1130,7 @@ i_make_fun I t %hot %macro: is_function IsFunction -fail_action -is_function f x -is_function f y +is_function f xy is_function Fail=f c => jump Fail func_info M F A => i_func_info u M F A @@ -1180,8 +1142,7 @@ func_info M F A => i_func_info u M F A %cold bs_start_match2 Fail=f ica X Y D => jump Fail bs_start_match2 Fail Bin X Y D => i_bs_start_match2 Bin Fail X Y D -i_bs_start_match2 x f I I d -i_bs_start_match2 y f I I d +i_bs_start_match2 xy f I I d bs_save2 Reg Index => gen_bs_save(Reg, Index) i_bs_save2 x I @@ -1209,9 +1170,9 @@ i_bs_get_integer_32 x f I d bs_get_binary2 Fail=f Ms=x Live=u Sz=sq Unit=u Flags=u Dst=d => \ gen_get_binary2(Fail, Ms, Live, Sz, Unit, Flags, Dst) -%macro: i_bs_get_binary_imm2 BsGetBinaryImm_2 -fail_action -gen_dest -%macro: i_bs_get_binary2 BsGetBinary_2 -fail_action -gen_dest -%macro: i_bs_get_binary_all2 BsGetBinaryAll_2 -fail_action -gen_dest +%macro: i_bs_get_binary_imm2 BsGetBinaryImm_2 -fail_action +%macro: i_bs_get_binary2 BsGetBinary_2 -fail_action +%macro: i_bs_get_binary_all2 BsGetBinaryAll_2 -fail_action i_bs_get_binary_imm2 f x I I I d i_bs_get_binary2 f x I s I d @@ -1224,7 +1185,7 @@ bs_get_float2 Fail=f Ms=x Live=u Sz=s Unit=u Flags=u Dst=d => \ bs_get_float2 Fail=f Ms=x Live=u Sz=q Unit=u Flags=u Dst=d => jump Fail -%macro: i_bs_get_float2 BsGetFloat2 -fail_action -gen_dest +%macro: i_bs_get_float2 BsGetFloat2 -fail_action i_bs_get_float2 f x I s I d # Miscellanous @@ -1236,8 +1197,7 @@ bs_skip_bits2 Fail=f Ms=x Sz=sq Unit=u Flags=u => \ i_bs_skip_bits_imm2 f x I %macro: i_bs_skip_bits2 BsSkipBits2 -fail_action -i_bs_skip_bits2 f x x I -i_bs_skip_bits2 f x y I +i_bs_skip_bits2 f x xy I %macro: i_bs_skip_bits_all2 BsSkipBitsAll2 -fail_action i_bs_skip_bits_all2 f x I @@ -1302,8 +1262,7 @@ bs_init2 Fail Sz Words=u==0 Regs Flags Dst => \ bs_init2 Fail Sz Words Regs Flags Dst => \ i_bs_init_fail_heap Sz Words Fail Regs Dst -i_bs_init_fail x j I d -i_bs_init_fail y j I d +i_bs_init_fail xy j I d i_bs_init_fail_heap s I j I d @@ -1324,8 +1283,7 @@ bs_init_bits Fail Sz Words=u==0 Regs Flags Dst => \ bs_init_bits Fail Sz Words Regs Flags Dst => \ i_bs_init_bits_fail_heap Sz Words Fail Regs Dst -i_bs_init_bits_fail x j I d -i_bs_init_bits_fail y j I d +i_bs_init_bits_fail xy j I d i_bs_init_bits_fail_heap s I j I d @@ -1493,8 +1451,7 @@ is_map Fail Lit=q | literal_is_map(Lit) => is_map Fail cq => jump Fail %macro: is_map IsMap -fail_action -is_map f x -is_map f y +is_map f xy ## Transform has_map_fields #{ K1 := _, K2 := _ } to has_map_elements @@ -1514,16 +1471,10 @@ i_get_map_element Fail Src=xy Key=y Dst => \ move Key x | i_get_map_element Fail Src x Dst %macro: i_get_map_element_hash GetMapElementHash -fail_action -i_get_map_element_hash f x c I x -i_get_map_element_hash f y c I x -i_get_map_element_hash f x c I y -i_get_map_element_hash f y c I y +i_get_map_element_hash f xy c I xy %macro: i_get_map_element GetMapElement -fail_action -i_get_map_element f x x x -i_get_map_element f y x x -i_get_map_element f x x y -i_get_map_element f y x y +i_get_map_element f xy x xy # # Convert the plus operations to a generic plus instruction. @@ -1589,12 +1540,9 @@ gc_bif2 Fail Live u$bif:erlang:bxor/2 S1 S2 Dst => \ gc_bif1 Fail I u$bif:erlang:bnot/1 Src Dst=d => i_int_bnot Fail Src I Dst -i_increment r I I d -i_increment x I I d -i_increment y I I d +i_increment rxy I I d -i_plus j I x x d -i_plus j I x y d +i_plus j I x xy d i_plus j I s s d i_minus j I x x d diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c index 2de908ffb3..bfebff5706 100644 --- a/erts/emulator/drivers/common/inet_drv.c +++ b/erts/emulator/drivers/common/inet_drv.c @@ -604,18 +604,6 @@ static size_t my_strnlen(const char *s, size_t maxlen) #endif -#if defined(HAVE_SYS_UN_H) - -/* Check that some character in the buffer != '\0' */ -static int is_nonzero(const char *s, size_t n) -{ - size_t i; - for (i = 0; i < n; i++) if (s[i] != '\0') return !0; - return 0; -} - -#endif - #ifdef VALGRIND # include <valgrind/memcheck.h> #else @@ -4025,13 +4013,30 @@ static char* inet_set_address(int family, inet_address* dst, int n; if (*len == 0) return str_einval; n = *((unsigned char*)(*src)); /* Length field */ - if ((*len < 1+n) || (sizeof(dst->sal.sun_path) < n+1)) { + if (*len < 1+n) return str_einval; + if (n + +#ifdef __linux__ + /* Make sure the address gets zero terminated + * except when the first byte is \0 because then it is + * sort of zero terminated although the zero termination + * comes before the address... + * This fix handles Linux's nonportable + * abstract socket address extension. + */ + ((*len) > 1 && (*src)[1] == '\0' ? 0 : 1) +#else + 1 +#endif + > sizeof(dst->sal.sun_path)) { return str_einval; } sys_memzero((char*)dst, sizeof(struct sockaddr_un)); dst->sal.sun_family = family; sys_memcpy(dst->sal.sun_path, (*src)+1, n); *len = offsetof(struct sockaddr_un, sun_path) + n; +#ifndef NO_SA_LEN + dst->sal.sun_len = *len; +#endif *src += 1 + n; return NULL; } @@ -4176,15 +4181,16 @@ static int inet_get_address(char* dst, inet_address* src, unsigned int* len) if (*len < offsetof(struct sockaddr_un, sun_path)) return -1; n = *len - offsetof(struct sockaddr_un, sun_path); if (255 < n) return -1; - /* Portability fix: Assume that the address is a zero terminated - * string, except when the first byte is \0 i.e the - * string length is 0. Then use the reported length instead. - * This fix handles Linux's abstract socket address - * nonportable extension. - */ m = my_strnlen(src->sal.sun_path, n); - if ((m == 0) && is_nonzero(src->sal.sun_path, n)) - m = n; +#ifdef __linux__ + /* Assume that the address is a zero terminated string, + * except when the first byte is \0 i.e the string length is 0, + * then use the reported length instead. + * This fix handles Linux's nonportable + * abstract socket address extension. + */ + if (m == 0) m = n; +#endif dst[0] = INET_AF_LOCAL; dst[1] = (char) ((unsigned char) m); sys_memcpy(dst+2, src->sal.sun_path, m); @@ -4241,15 +4247,16 @@ inet_address_to_erlang(char *dst, inet_address **src, SOCKLEN_T sz) { if (sz < offsetof(struct sockaddr_un, sun_path)) return -1; n = sz - offsetof(struct sockaddr_un, sun_path); if (255 < n) return -1; - /* Portability fix: Assume that the address is a zero terminated - * string, except when the first byte is \0 i.e the - * string length is 0. Then use the reported length instead. - * This fix handles Linux's abstract socket address - * nonportable extension. - */ m = my_strnlen((*src)->sal.sun_path, n); - if ((m == 0) && is_nonzero((*src)->sal.sun_path, n)) - m = n; +#ifdef __linux__ + /* Assume that the address is a zero terminated string, + * except when the first byte is \0 i.e the string length is 0, + * Then use the reported length instead. + * This fix handles Linux's nonportable + * abstract socket address extension. + */ + if (m == 0) m = n; +#endif if (dst) { dst[0] = INET_AF_LOCAL; dst[1] = (char) ((unsigned char) m); @@ -8680,6 +8687,7 @@ static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf, else { ptr = &peer; sz = sizeof(peer); + sys_memzero((char *) &peer, sz); if (IS_SOCKET_ERROR (sock_peer (desc->s, (struct sockaddr*)ptr, &sz))) @@ -10830,10 +10838,11 @@ static int tcp_inet_output(tcp_descriptor* desc, HANDLE event) #ifndef SO_ERROR { - int sz = sizeof(desc->inet.remote); - int code = sock_peer(desc->inet.s, - (struct sockaddr*) &desc->inet.remote, &sz); - + int sz, code; + sz = sizeof(desc->inet.remote); + sys_memzero((char *) &desc->inet.remote, sz); + code = sock_peer(desc->inet.s, + (struct sockaddr*) &desc->inet.remote, &sz); if (IS_SOCKET_ERROR(code)) { desc->inet.state = INET_STATE_OPEN; /* restore state */ ret = async_error(INETP(desc), sock_errno()); diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c index 0079912b10..b1bea3a960 100644 --- a/erts/emulator/sys/unix/sys.c +++ b/erts/emulator/sys/unix/sys.c @@ -885,7 +885,6 @@ void erts_replace_intr(void) { void init_break_handler(void) { sys_signal(SIGINT, request_break); - sys_signal(SIGHUP, generic_signal_handler); #ifndef ETHR_UNUSABLE_SIGUSRX sys_signal(SIGUSR1, generic_signal_handler); #endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */ diff --git a/erts/emulator/test/call_trace_SUITE.erl b/erts/emulator/test/call_trace_SUITE.erl index 1216863c51..95171d04ce 100644 --- a/erts/emulator/test/call_trace_SUITE.erl +++ b/erts/emulator/test/call_trace_SUITE.erl @@ -60,7 +60,7 @@ all() -> init_per_testcase(Func, Config) when is_atom(Func), is_list(Config) -> Config. -end_per_testcase(_Func, Config) -> +end_per_testcase(_Func, _Config) -> %% Reloading the module will clear all trace patterns, and %% in a debug-compiled emulator run assertions of the counters %% for the number of traced exported functions in this module. diff --git a/erts/emulator/test/code_SUITE.erl b/erts/emulator/test/code_SUITE.erl index d07166ed98..35f7baf2cf 100644 --- a/erts/emulator/test/code_SUITE.erl +++ b/erts/emulator/test/code_SUITE.erl @@ -229,27 +229,6 @@ multi_proc_purge(Config) when is_list(Config) -> Pid9, Pid10, Pid11, Pid12, Pid13, Pid14, Pid15, Pid16]), ok. -body(F, Fakes) -> - receive - jog -> - 40 = F(3), - erlang:garbage_collect(), - body(F, Fakes); - drop_funs -> - dropped_body() - end. - -dropped_body() -> - receive - X -> exit(X) - end. - -gc() -> - erlang:garbage_collect(), - gc1(). -gc1() -> ok. - - %% Test the erlang:check_old_code/1 BIF. t_check_old_code(Config) when is_list(Config) -> Data = proplists:get_value(data_dir, Config), diff --git a/erts/emulator/test/driver_SUITE.erl b/erts/emulator/test/driver_SUITE.erl index 2fbf6eae61..e854a5f945 100644 --- a/erts/emulator/test/driver_SUITE.erl +++ b/erts/emulator/test/driver_SUITE.erl @@ -127,7 +127,7 @@ init_per_testcase(Case, Config) when is_atom(Case), is_list(Config) -> 0 = element(1, erts_debug:get_internal_state(check_io_debug)), [{testcase, Case}|Config]. -end_per_testcase(Case, Config) -> +end_per_testcase(Case, _Config) -> erlang:display({end_per_testcase, Case}), 0 = element(1, erts_debug:get_internal_state(check_io_debug)), ok. diff --git a/erts/emulator/test/mtx_SUITE.erl b/erts/emulator/test/mtx_SUITE.erl index 12928ed6d8..0d6ab5cdb2 100644 --- a/erts/emulator/test/mtx_SUITE.erl +++ b/erts/emulator/test/mtx_SUITE.erl @@ -97,7 +97,7 @@ init_per_testcase(_Case, Config) -> wait_deallocations(), Config. -end_per_testcase(_Func, Config) -> +end_per_testcase(_Func, _Config) -> ok. wait_deallocations() -> diff --git a/erts/emulator/test/signal_SUITE.erl b/erts/emulator/test/signal_SUITE.erl index 7e516176f7..d788360812 100644 --- a/erts/emulator/test/signal_SUITE.erl +++ b/erts/emulator/test/signal_SUITE.erl @@ -53,7 +53,7 @@ init_per_testcase(Func, Config) when is_atom(Func), is_list(Config) -> available_internal_state(true), [{testcase, Func}|Config]. -end_per_testcase(_Func, Config) -> +end_per_testcase(_Func, _Config) -> ok. init_per_suite(Config) -> diff --git a/erts/emulator/test/statistics_SUITE.erl b/erts/emulator/test/statistics_SUITE.erl index 3057905f4c..7690557fda 100644 --- a/erts/emulator/test/statistics_SUITE.erl +++ b/erts/emulator/test/statistics_SUITE.erl @@ -396,7 +396,7 @@ msb_swt_hog(false) -> count(1000000), msb_swt_hog(false). -msb_scheduler_wall_time(Config) -> +msb_scheduler_wall_time(_Config) -> erlang:system_flag(scheduler_wall_time, true), Dirty = erlang:system_info(dirty_cpu_schedulers) /= 0, Hogs = lists:map(fun (_) -> @@ -493,7 +493,7 @@ badarg(Config) when is_list(Config) -> tok_loop() -> tok_loop(). -run_queues_lengths_active_tasks(Config) -> +run_queues_lengths_active_tasks(_Config) -> TokLoops = lists:map(fun (_) -> spawn_opt(fun () -> tok_loop() @@ -502,20 +502,37 @@ run_queues_lengths_active_tasks(Config) -> end, lists:seq(1,10)), + + TRQLs0 = statistics(total_run_queue_lengths), + TRQLAs0 = statistics(total_run_queue_lengths_all), TATs0 = statistics(total_active_tasks), + TATAs0 = statistics(total_active_tasks_all), true = is_integer(TRQLs0), true = is_integer(TATs0), true = TRQLs0 >= 0, + true = TRQLAs0 >= 0, true = TATs0 >= 11, + true = TATAs0 >= 11, NoScheds = erlang:system_info(schedulers), + {DefRqs, + AllRqs} = case erlang:system_info(dirty_cpu_schedulers) of + 0 -> {NoScheds, NoScheds}; + _ -> {NoScheds+1, NoScheds+2} + end, RQLs0 = statistics(run_queue_lengths), + RQLAs0 = statistics(run_queue_lengths_all), ATs0 = statistics(active_tasks), - NoScheds = length(RQLs0), - NoScheds = length(ATs0), + ATAs0 = statistics(active_tasks_all), + DefRqs = length(RQLs0), + AllRqs = length(RQLAs0), + DefRqs = length(ATs0), + AllRqs = length(ATAs0), true = lists:sum(RQLs0) >= 0, + true = lists:sum(RQLAs0) >= 0, true = lists:sum(ATs0) >= 11, + true = lists:sum(ATAs0) >= 11, SO = erlang:system_flag(schedulers_online, 1), @@ -531,8 +548,8 @@ run_queues_lengths_active_tasks(Config) -> RQLs1 = statistics(run_queue_lengths), ATs1 = statistics(active_tasks), - NoScheds = length(RQLs1), - NoScheds = length(ATs1), + DefRqs = length(RQLs1), + DefRqs = length(ATs1), TRQLs2 = lists:sum(RQLs1), TATs2 = lists:sum(ATs1), true = TRQLs2 >= 10, diff --git a/erts/emulator/test/trace_SUITE.erl b/erts/emulator/test/trace_SUITE.erl index f846b0f4b9..643c2e0472 100644 --- a/erts/emulator/test/trace_SUITE.erl +++ b/erts/emulator/test/trace_SUITE.erl @@ -733,7 +733,7 @@ set_on_first_spawn(Config) when is_list(Config) -> %% Tests trace(Pid, How, [set_on_link]). -set_on_link(Config) -> +set_on_link(_Config) -> Listener = fun_spawn(fun process/0), %% Create and trace a process with the set_on_link flag. @@ -756,7 +756,7 @@ set_on_link(Config) -> %% Tests trace(Pid, How, [set_on_first_spawn]). -set_on_first_link(Config) -> +set_on_first_link(_Config) -> ct:timetrap({seconds, 10}), Listener = fun_spawn(fun process/0), diff --git a/erts/emulator/test/trace_meta_SUITE.erl b/erts/emulator/test/trace_meta_SUITE.erl index b6a6fd5404..ef58978749 100644 --- a/erts/emulator/test/trace_meta_SUITE.erl +++ b/erts/emulator/test/trace_meta_SUITE.erl @@ -74,7 +74,7 @@ config(priv_dir,_) -> init_per_testcase(_Case, Config) -> Config. -end_per_testcase(_Case, Config) -> +end_per_testcase(_Case, _Config) -> shutdown(), ok. diff --git a/erts/emulator/utils/beam_makeops b/erts/emulator/utils/beam_makeops index 9813142585..05cd48d434 100755 --- a/erts/emulator/utils/beam_makeops +++ b/erts/emulator/utils/beam_makeops @@ -332,9 +332,9 @@ while (<>) { if (/^\%macro:(.*)/) { my($op, $macro, @flags) = split(' ', $1); defined($macro) and $macro =~ /^-/ and - &error("A macro must not start with a hyphen"); + error("A macro must not start with a hyphen"); foreach (@flags) { - /^-/ or &error("Flags for macros should start with a hyphen"); + /^-/ or error("Flags for macros should start with a hyphen"); } error("Macro for '$op' is already defined") if defined $macro{$op}; @@ -347,7 +347,7 @@ while (<>) { # Handle transformations. # if (/=>/) { - &parse_transformation($_); + parse_transformation($_); next; } @@ -357,8 +357,8 @@ while (<>) { $op_num = undef; if (s/^(\d+):\s*//) { $op_num = $1; - $op_num != 0 or &error("Opcode 0 invalid"); - &error("Opcode $op_num already defined") + $op_num != 0 or error("Opcode 0 invalid"); + error("Opcode $op_num already defined") if defined $gen_opname[$op_num]; } @@ -369,11 +369,11 @@ while (<>) { my($obsolete) = $1; my($name) = $2; my($arity) = $3; - $name =~ /^[a-z]/ or &error("Opname must start with a lowercase letter"); + $name =~ /^[a-z]/ or error("Opname must start with a lowercase letter"); defined $gen_arity{$name} and $gen_arity{$name} != $arity and - &error("Opname $name already defined with arity $gen_arity{$name}"); + error("Opname $name already defined with arity $gen_arity{$name}"); defined $unnumbered{$name,$arity} and - &error("Opname $name already defined with arity $gen_arity{$name}"); + error("Opname $name already defined with arity $gen_arity{$name}"); if (defined $op_num) { # Numbered generic operation $gen_opname[$op_num] = $name; @@ -395,16 +395,16 @@ while (<>) { # Name Arg1 Arg2... # my($name, @args) = split; - &error("too many operands") + error("too many operands") if @args > $max_spec_operands; - &syntax_check($name, @args); + syntax_check($name, @args); my $arity = @args; if (defined $gen_opnum{$name,$arity} and $obsolete[$gen_opnum{$name,$arity}]) { error("specific instructions may not be specified for obsolete instructions"); } - push(@{$specific_op{"$name/$arity"}}, [$name, $hot, @args]); + save_specific_ops($name, $arity, $hot, @args); if (defined $op_num) { - &error("specific instructions must not be numbered"); + error("specific instructions must not be numbered"); } elsif (!defined($gen_arity{$name}) && !defined($unnumbered{$name,$arity})) { # # Create an unumbered generic instruction too. @@ -446,7 +446,7 @@ $num_file_opcodes = @gen_opname; # Produce output for the chosen target. # -&$target; +&$target(); # # Produce output needed by the emulator/loader. @@ -462,7 +462,7 @@ sub emulator_output { # $name = "$outdir/beam_opcodes.c"; open(STDOUT, ">$name") || die "Failed to open $name for writing: $!\n"; - &comment('C'); + comment('C'); print "#ifdef HAVE_CONFIG_H\n"; print "# include \"config.h\"\n"; print "#endif\n\n"; @@ -525,7 +525,7 @@ sub emulator_output { # Call a generator to calculate size and generate macros # for the emulator. # - my($size, $code, $pack) = &basic_generator($name, $hot, @args); + my($size, $code, $pack) = basic_generator($name, $hot, @args); # # Save the generated $code for later. @@ -587,7 +587,7 @@ sub emulator_output { # Generate transformations. # - &tr_gen(@transformations); + tr_gen(@transformations); # # Print the generic instruction table. @@ -602,7 +602,7 @@ sub emulator_output { my($arity) = $gen_arity[$i]; printf "/* %3d */ ", $i; if (!defined $name) { - &init_item("", 0, 0, 0, -1); + init_item("", 0, 0, 0, -1); } else { my($key) = "$name/$arity"; my($tr) = defined $gen_transform_offset{$key} ? @@ -614,7 +614,7 @@ sub emulator_output { $is_transformed{$name,$arity} or error("instruction $key has no specific instruction"); $spec_op = -1 unless defined $spec_op; - &init_item($name, $arity, $spec_op, $num_specific, $tr); + init_item($name, $arity, $spec_op, $num_specific, $tr); } } print "};\n"; @@ -624,7 +624,7 @@ sub emulator_output { # $name = "$outdir/beam_opcodes.h"; open(STDOUT, ">$name") || die "Failed to open $name for writing: $!\n"; - &comment('C'); + comment('C'); print "#ifndef __OPCODES_H__\n"; print "#define __OPCODES_H__\n\n"; @@ -662,14 +662,14 @@ sub emulator_output { my $letter; my $tag_num = 0; - &comment('C', "The following operand types for generic instructions", + comment('C', "The following operand types for generic instructions", "occur in beam files."); foreach $letter (split('', $compiler_types)) { print "#define TAG_$letter $tag_num\n"; $tag_num++; } print "\n"; - &comment('C', "The following operand types are only used in the loader."); + comment('C', "The following operand types are only used in the loader."); foreach $letter (split('', $loader_types)) { print "#define TAG_$letter $tag_num\n"; $tag_num++; @@ -736,26 +736,26 @@ sub emulator_output { $name = "$outdir/beam_tr_funcs.h"; open(STDOUT, ">$name") || die "Failed to open $name for writing: $!\n"; - &comment('C'); - &tr_gen_call(@call_table); + comment('C'); + tr_gen_call(@call_table); $name = "$outdir/beam_pred_funcs.h"; open(STDOUT, ">$name") || die "Failed to open $name for writing: $!\n"; - &comment('C'); - &tr_gen_call(@pred_table); + comment('C'); + tr_gen_call(@pred_table); # # Implementation of operations for emulator. # $name = "$outdir/beam_hot.h"; open(STDOUT, ">$name") || die "Failed to open $name for writing: $!\n"; - &comment('C'); - &print_code(\%hot_code); + comment('C'); + print_code(\%hot_code); $name = "$outdir/beam_cold.h"; open(STDOUT, ">$name") || die "Failed to open $name for writing: $!\n"; - &comment('C'); - &print_code(\%cold_code); + comment('C'); + print_code(\%cold_code); } @@ -818,7 +818,7 @@ sub compiler_output { open(STDOUT, ">$outdir/$name") || die "Failed to open $name for writing: $!\n"; print "-module($module).\n"; - &comment('erlang'); + comment('erlang'); print "-export([format_number/0]).\n"; print "-export([opcode/2,opname/1]).\n"; @@ -830,7 +830,7 @@ sub compiler_output { for ($i = 0; $i < @gen_opname; $i++) { next unless defined $gen_opname[$i]; print "%%" if $obsolete[$i]; - print "opcode(", "e($gen_opname[$i]), ", $gen_arity[$i]) -> $i;\n"; + print "opcode(", quote($gen_opname[$i]), ", $gen_arity[$i]) -> $i;\n"; } print "opcode(Name, Arity) -> erlang:error(badarg, [Name,Arity]).\n\n"; @@ -838,7 +838,7 @@ sub compiler_output { for ($i = 0; $i < @gen_opname; $i++) { next unless defined $gen_opname[$i]; print "opname($i) -> {", - "e($gen_opname[$i]), ",$gen_arity[$i]};\n"; + quote($gen_opname[$i]), ",$gen_arity[$i]};\n"; } print "opname(Number) -> erlang:error(badarg, [Number]).\n"; @@ -847,7 +847,7 @@ sub compiler_output { # my($hrl_name) = "$outdir/${module}.hrl"; open(STDOUT, ">$hrl_name") || die "Failed to open $hrl_name for writing: $!\n"; - &comment('erlang'); + comment('erlang'); for ($i = 0; $i < @tag_type && $i < 8; $i++) { print "-define(tag_$tag_type[$i], $i).\n"; @@ -863,11 +863,33 @@ sub syntax_check { my($name, @args) = @_; my($i); - &error("Bad opcode name '$name'") + error("Bad opcode name '$name'") unless $name =~ /^[a-z][\w\d_]*$/; for ($i = 0; $i < @args; $i++) { - &error("Argument " . ($i+1) . ": invalid type '$args[$i]'") - unless defined $arg_size{$args[$i]}; + foreach my $type (split(//, $args[$i])) { + error("Argument " . ($i+1) . ": invalid type '$type'") + unless defined $arg_size{$type}; + } + } +} + +sub save_specific_ops { + my($name,$arity,$hot,@args) = @_; + my(@res) = (""); + + foreach my $arg (@args) { + my @new_res = (); + foreach my $type (split(//, $arg)) { + foreach my $args (@res) { + push @new_res, "$args$type"; + } + } + @res = @new_res; + } + my $key = "$name/$arity"; + foreach my $args (@res) { + @args = split //, $args; + push @{$specific_op{$key}}, [$name,$hot,@args]; } } @@ -928,7 +950,6 @@ sub basic_generator { my($tmp_arg_num) = 1; my($pack_spec) = ''; my($var_decls) = ''; - my($gen_dest_arg) = 'StoreSimpleDest'; my($i); my($no_prefetch) = 0; @@ -964,7 +985,7 @@ sub basic_generator { # if ($flags =~ /-pack/ && $hot) { - ($prefix, $pack_spec, @args) = &do_pack(@args); + ($prefix, $pack_spec, @args) = do_pack(@args); } # @@ -994,11 +1015,11 @@ sub basic_generator { push(@f_types, $_); $prefix .= "GetR($size, $tmp);\n"; last SWITCH; }; - /d/ and do { $var_decls .= "Eterm dst; "; - push(@f, "dst"); + /d/ and do { $var_decls .= "Eterm dst; Eterm* dst_ptr; "; + push(@f, "*dst_ptr"); push(@f_types, $_); $prefix .= "dst = Arg($size);\n"; - $gen_dest_arg = 'StoreResult'; + $prefix .= "dst_ptr = REG_TARGET_PTR(dst);\n"; last SWITCH; }; defined($incl_arg{$_}) @@ -1017,14 +1038,6 @@ sub basic_generator { } # - # If requested, pass a pointer to the destination register. - # The destination must be the last operand. - # - if ($flags =~ /-gen_dest/) { - push(@f, $gen_dest_arg); - } - - # # Add a fail action macro if requested. # @@ -1195,7 +1208,7 @@ sub do_pack { } $down = "$instr[$ap]$down"; - my($unpack) = &make_unpack($tmpnum, $shift[$ap], $mask[$ap]); + my($unpack) = make_unpack($tmpnum, $shift[$ap], $mask[$ap]); $args[$i] = "pack:$this_size:$reg" . "b($unpack)"; if (++$ap == $args_per_word) { @@ -1259,7 +1272,7 @@ sub parse_transformation { foreach (@from) { if (/^(\w+)\((.*?)\)/) { my($name, $arglist) = ($1, $2); - $_ = (&compile_transform_function($name, split(/\s*,\s*/, $arglist))); + $_ = (compile_transform_function($name, split(/\s*,\s*/, $arglist))); } else { (@op) = split; ($rest_var,$_) = compile_transform(1, $rest_var, @op); @@ -1275,7 +1288,7 @@ sub parse_transformation { my @to; if ($to =~ /^(\w+)\((.*?)\)/) { my($name, $arglist) = ($1, $2); - @to = (&compile_transform_function($name, split(/\s*,\s*/, $arglist))); + @to = (compile_transform_function($name, split(/\s*,\s*/, $arglist))); } else { @to = split(/\s*\|\s*/, $to); foreach (@to) { @@ -1297,7 +1310,7 @@ sub compile_transform { my $arity = 0; foreach (@ops) { - my(@list) = &tr_parse_op($src, $_); + my(@list) = tr_parse_op($src, $_); if ($list[1] eq '*') { $rest_var = $list[0]; } elsif (defined $rest_var and $list[0] eq $rest_var) { @@ -1334,7 +1347,7 @@ sub tr_parse_op { if (/^([A-Z]\w*)(.*)/) { $var = $1; $_ = $2; - &error("garbage after variable") + error("garbage after variable") unless /^=(.*)/ or /^(\s*)$/; $_ = $1; } @@ -1345,7 +1358,7 @@ sub tr_parse_op { $type = $1; $_ = $2; foreach (split('', $type)) { - &error("bad type in $op") + error("bad type in $op") unless defined $type_bit{$_} or $type eq '*'; $_ eq 'r' and error("$op: 'r' is not allowed in transformations") @@ -1392,7 +1405,7 @@ sub tr_parse_op { # Nothing more is allowed after the command. - &error("garbage '$_' after operand: $op") + error("garbage '$_' after operand: $op") unless /^\s*$/; # Test that destination has no conditions. @@ -1519,7 +1532,7 @@ sub tr_gen_from { # Check that $name/$arity refers to a valid generic instruction. # - &error($where, "invalid generic op $name/$arity") + error($where, "invalid generic op $name/$arity") unless defined $gen_opnum{$name,$arity}; $opnum = $gen_opnum{$name,$arity}; @@ -1547,11 +1560,11 @@ sub tr_gen_from { $type_mask |= $type_bit{$_}; } if ($cond ne 'is_eq') { - push(@code, &make_op($types, 'is_type', $type_mask)); + push(@code, make_op($types, 'is_type', $type_mask)); } else { $cond = ''; - push(@code, &make_op("$types== $val", 'is_type_eq', - $type_mask, $val)); + push(@code, make_op("$types== $val", 'is_type_eq', + $type_mask, $val)); } } } @@ -1560,12 +1573,12 @@ sub tr_gen_from { my($m, $f, $a) = split(/:/, $val); $ignored_var = ''; $may_fail = 1; - push(@code, &make_op('', "$cond", "am_$m", + push(@code, make_op('', "$cond", "am_$m", "am_$f", $a)); } elsif ($cond ne '') { $ignored_var = ''; $may_fail = 1; - push(@code, &make_op('', "$cond", $val)); + push(@code, make_op('', "$cond", $val)); } if ($var ne '') { @@ -1591,7 +1604,7 @@ sub tr_gen_from { $var_type{$var} = 'scalar'; $var{$var} = $var_num; $var_num++; - push(@code, &make_op($var, 'set_var', $var{$var})); + push(@code, make_op($var, 'set_var', $var{$var})); } } if (is_instr($code[$#code], 'set_var')) { @@ -1600,7 +1613,7 @@ sub tr_gen_from { my $var = $ref->[1][1]; push(@code, make_op($comment, 'set_var_next_arg', $var)); } else { - push(@code, &make_op($ignored_var, 'next_arg')); + push(@code, make_op($ignored_var, 'next_arg')); } } @@ -1645,7 +1658,7 @@ sub tr_gen_to { my(@args); foreach $var (@ops) { - &error($where, "variable '$var' unbound") + error($where, "variable '$var' unbound") unless defined $var{$var}; if ($var_type{$var} eq 'scalar') { push(@args, "var[$var{$var}]"); @@ -1668,7 +1681,7 @@ sub tr_gen_to { # my($key) = "$name/$arity"; - &error($where, "invalid generic op $name/$arity") + error($where, "invalid generic op $name/$arity") unless defined $gen_opnum{$name,$arity}; my $opnum = $gen_opnum{$name,$arity}; @@ -1683,15 +1696,15 @@ sub tr_gen_to { if ($type eq '*') { push(@code, make_op($var, 'store_rest_args')); } elsif ($var ne '') { - &error($where, "variable '$var' unbound") + error($where, "variable '$var' unbound") unless defined $var{$var}; my $op = make_op($var, 'store_var_next_arg', $var{$var}); op_slot_usage($op, $var{$var}); push(@code, $op); } elsif ($type ne '') { - push(@code, &make_op('', 'store_type', "TAG_$type")); + push(@code, make_op('', 'store_type', "TAG_$type")); if ($type_val) { - push(@code, &make_op('', 'store_val', $type_val)); + push(@code, make_op('', 'store_val', $type_val)); } push(@code, make_op('', 'next_arg')); } diff --git a/erts/etc/unix/etp-commands.in b/erts/etc/unix/etp-commands.in index b7b3a2ae99..fc7b614c21 100644 --- a/erts/etc/unix/etp-commands.in +++ b/erts/etc/unix/etp-commands.in @@ -2810,10 +2810,10 @@ define etp-run-queue-info-internal else if ($sched_type == 1) printf "\n--- Dirty CPU Run Queue ---\n" - set $runq = &erts_aligned_run_queues[-1].runq + set $runq = &erts_aligned_run_queues[erts_no_run_queues].runq else printf "\n--- Dirty I/O Run Queue ---\n" - set $runq = &erts_aligned_run_queues[-2].runq + set $runq = &erts_aligned_run_queues[erts_no_run_queues+1].runq end end printf " Length: total=%d", *((Uint32 *) &($runq->len)) diff --git a/erts/preloaded/ebin/erlang.beam b/erts/preloaded/ebin/erlang.beam Binary files differindex 980df873ca..63518ed6e1 100644 --- a/erts/preloaded/ebin/erlang.beam +++ b/erts/preloaded/ebin/erlang.beam diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl index fcb27ef575..72dd804412 100644 --- a/erts/preloaded/src/erlang.erl +++ b/erts/preloaded/src/erlang.erl @@ -2306,6 +2306,8 @@ spawn_opt(_Tuple) -> -spec statistics(active_tasks) -> [ActiveTasks] when ActiveTasks :: non_neg_integer(); + (active_tasks_all) -> [ActiveTasks] when + ActiveTasks :: non_neg_integer(); (context_switches) -> {ContextSwitches,0} when ContextSwitches :: non_neg_integer(); (exact_reductions) -> {Total_Exact_Reductions, @@ -2335,6 +2337,8 @@ spawn_opt(_Tuple) -> (run_queue) -> non_neg_integer(); (run_queue_lengths) -> [RunQueueLength] when RunQueueLength :: non_neg_integer(); + (run_queue_lengths_all) -> [RunQueueLength] when + RunQueueLength :: non_neg_integer(); (runtime) -> {Total_Run_Time, Time_Since_Last_Call} when Total_Run_Time :: non_neg_integer(), Time_Since_Last_Call :: non_neg_integer(); @@ -2347,9 +2351,13 @@ spawn_opt(_Tuple) -> ActiveTime :: non_neg_integer(), TotalTime :: non_neg_integer(); (total_active_tasks) -> ActiveTasks when + ActiveTasks :: non_neg_integer(); + (total_active_tasks_all) -> ActiveTasks when ActiveTasks :: non_neg_integer(); (total_run_queue_lengths) -> TotalRunQueueLengths when TotalRunQueueLengths :: non_neg_integer(); + (total_run_queue_lengths_all) -> TotalRunQueueLengths when + TotalRunQueueLengths :: non_neg_integer(); (wall_clock) -> {Total_Wallclock_Time, Wallclock_Time_Since_Last_Call} when Total_Wallclock_Time :: non_neg_integer(), diff --git a/lib/common_test/doc/src/ct_ssh.xml b/lib/common_test/doc/src/ct_ssh.xml index 137e4c3f1d..63627d8840 100644 --- a/lib/common_test/doc/src/ct_ssh.xml +++ b/lib/common_test/doc/src/ct_ssh.xml @@ -1034,6 +1034,33 @@ ChannelId, 0, Data, End, Timeout)</c></seealso>.</p> </func> <func> + <name>shell(SSH, ChannelId) -> ok | {error, Reason}</name> + <fsummary>Equivalent to shell(SSH, ChannelId, DefaultTimeout).</fsummary> + <desc><marker id="shell-2"/> + <p>Equivalent to + <seealso marker="#shell-3"><c>ct_ssh:shell(SSH, ChannelId, + DefaultTimeout)</c></seealso>.</p> + </desc> + </func> + + <func> + <name>shell(SSH, ChannelId, Timeout) -> ok | {error, Reason}</name> + <fsummary>Requests that the user default shell is executed at the + server end.</fsummary> + <type> + <v>SSH = connection()</v> + <v>ChannelId = integer()</v> + <v>Timeout = integer()</v> + <v>Reason = term()</v> + </type> + <desc><marker id="shell-3"/> + <p>Requests that the user default shell (typically defined in + <c>/etc/passwd</c> in Unix systems) is executed at the + server end.</p> + </desc> + </func> + + <func> <name>subsystem(SSH, ChannelId, Subsystem) -> Status | {error, Reason}</name> <fsummary>Equivalent to subsystem(SSH, ChannelId, Subsystem, DefaultTimeout).</fsummary> diff --git a/lib/common_test/src/ct_ssh.erl b/lib/common_test/src/ct_ssh.erl index 6ab3bf036c..5ac91f396b 100644 --- a/lib/common_test/src/ct_ssh.erl +++ b/lib/common_test/src/ct_ssh.erl @@ -68,7 +68,8 @@ send_and_receive/3, send_and_receive/4, send_and_receive/5, send_and_receive/6, exec/2, exec/3, exec/4, - subsystem/3, subsystem/4]). + subsystem/3, subsystem/4, + shell/2, shell/3]). %% STFP Functions -export([sftp_connect/1, @@ -94,6 +95,7 @@ -record(state, {ssh_ref, conn_type, target}). +-type handle() :: pid(). %%%----------------------------------------------------------------- %%%------------------------ SSH COMMANDS --------------------------- @@ -490,6 +492,22 @@ subsystem(SSH, ChannelId, Subsystem, Timeout) -> call(SSH, {subsystem,ChannelId,Subsystem,Timeout}). +-spec shell(SSH, ChannelId) -> Result when + SSH :: handle() | ct:target_name(), + ChannelId :: ssh:ssh_channel_id(), + Result :: ok | {error,term()}. +shell(SSH, ChannelId) -> + shell(SSH, ChannelId, ?DEFAULT_TIMEOUT). + +-spec shell(SSH, ChannelId, Timeout) -> Result when + SSH :: handle() | ct:target_name(), + ChannelId :: ssh:ssh_channel_id(), + Timeout :: timeout(), + Result :: ok | {error,term()}. +shell(SSH, ChannelId, Timeout) -> + call(SSH, {shell,ChannelId,Timeout}). + + %%%----------------------------------------------------------------- %%%------------------------ SFTP COMMANDS -------------------------- @@ -1067,6 +1085,14 @@ handle_msg({subsystem,Chn,Subsystem,TO}, State) -> Result = ssh_connection:subsystem(SSHRef, Chn, Subsystem, TO), {Result,State}; +handle_msg({shell,Chn,TO}, State) -> + #state{ssh_ref=SSHRef, target=Target} = State, + try_log(heading(shell,Target), + "SSH Ref: ~p, Chn: ~p, Timeout: ~p", + [SSHRef,Chn,TO]), + Result = ssh_connection:shell(SSHRef, Chn), + {Result,State}; + %% --- SFTP Commands --- handle_msg({read_file,Srv,File}=Cmd, S=#state{ssh_ref=SSHRef}) -> diff --git a/lib/common_test/test/ct_keep_logs_SUITE.erl b/lib/common_test/test/ct_keep_logs_SUITE.erl index f0c85a88a2..6b7aaa57ac 100644 --- a/lib/common_test/test/ct_keep_logs_SUITE.erl +++ b/lib/common_test/test/ct_keep_logs_SUITE.erl @@ -70,8 +70,7 @@ keep_logs(Config) -> Opts = [{suite,Suite},{label,keep_logs} | Opts0], LogDir=?config(logdir,Opts), - KeepLogsDir = filename:join(LogDir,unique_name("keep_logs-")), - ok = file:make_dir(KeepLogsDir), + KeepLogsDir = create_dir(filename:join(LogDir,"keep_logs-")), Opts1 = lists:keyreplace(logdir,1,Opts,{logdir,KeepLogsDir}), ct:log("New LogDir = ~s", [KeepLogsDir]), @@ -121,7 +120,11 @@ keep_logs(Config) -> 9 = length(L10), 0 = ct_test_support:run_ct_script_start([{keep_logs,10}|Opts1], Config), L11 = filelib:wildcard(WC), - 10 = length(L11). + 10 = length(L11), + + {ok,Content} = file:list_dir(KeepLogsDir), + ct:log("Deleting dir: ~p~nContent: ~p~n",[KeepLogsDir,Content]), + ct_test_support:rm_dir(KeepLogsDir). %% Test the keep_logs option togwther with the refresh_logs option refresh_logs(Config) -> @@ -129,8 +132,7 @@ refresh_logs(Config) -> Suite = filename:join(DataDir, "keep_logs_SUITE"), Opts0 = ct_test_support:get_opts(Config), LogDir=?config(logdir,Opts0), - KeepLogsDir = filename:join(LogDir,unique_name("refresh_logs-")), - ok = file:make_dir(KeepLogsDir), + KeepLogsDir = create_dir(filename:join(LogDir,"refresh_logs-")), Opts1 = lists:keyreplace(logdir,1,Opts0,{logdir,KeepLogsDir}), ct:log("New LogDir = ~s", [KeepLogsDir]), @@ -178,9 +180,20 @@ refresh_logs(Config) -> L10 = filelib:wildcard(WC), 4 = length(L10), - ok. + {ok,Content} = file:list_dir(KeepLogsDir), + ct:log("Deleting dir: ~p~nContent: ~p~n",[KeepLogsDir,Content]), + ct_test_support:rm_dir(KeepLogsDir). + %%%----------------------------------------------------------------- %%% Internal -unique_name(Prefix) -> +create_dir(Prefix) -> I = erlang:unique_integer([positive]), - Prefix ++ integer_to_list(I). + Dir = Prefix ++ integer_to_list(I), + case filelib:is_dir(Dir) of + true -> + %% Try again + create_dir(Prefix); + false -> + ok = file:make_dir(Dir), + Dir + end. diff --git a/lib/common_test/test/ct_test_support.erl b/lib/common_test/test/ct_test_support.erl index 935d032667..ba7aadfeec 100644 --- a/lib/common_test/test/ct_test_support.erl +++ b/lib/common_test/test/ct_test_support.erl @@ -45,6 +45,8 @@ -export([unique_timestamp/0]). +-export([rm_dir/1]). + -include_lib("kernel/include/file.hrl"). %%%----------------------------------------------------------------- diff --git a/lib/compiler/src/genop.tab b/lib/compiler/src/genop.tab index 5e0c2b3ebf..9efb9ad6f8 100755 --- a/lib/compiler/src/genop.tab +++ b/lib/compiler/src/genop.tab @@ -538,6 +538,8 @@ BEAM_FORMAT_NUMBER=0 157: has_map_fields/3 158: get_map_elements/3 +# OTP 20 + ## @spec is_tagged_tuple Lbl Reg N Atom ## @doc Test the type of Reg and jumps to Lbl if it is not a tuple. ## Test the arity of Reg and jumps to Lbl if it is not N. diff --git a/lib/compiler/test/compile_SUITE.erl b/lib/compiler/test/compile_SUITE.erl index f9bcb044ac..f5e904a50a 100644 --- a/lib/compiler/test/compile_SUITE.erl +++ b/lib/compiler/test/compile_SUITE.erl @@ -32,7 +32,7 @@ binary/1, makedep/1, cond_and_ifdef/1, listings/1, listings_big/1, other_output/1, kernel_listing/1, encrypted_abstr/1, strict_record/1, utf8_atoms/1, utf8_functions/1, extra_chunks/1, - cover/1, env/1, core/1, + cover/1, env/1, core_pp/1, core_roundtrip/1, asm/1, optimized_guards/1, sys_pre_attributes/1, dialyzer/1, warnings/1, pre_load_check/1, env_compiler_options/1, @@ -51,7 +51,7 @@ all() -> binary, makedep, cond_and_ifdef, listings, listings_big, other_output, kernel_listing, encrypted_abstr, strict_record, utf8_atoms, utf8_functions, extra_chunks, - cover, env, core, core_roundtrip, asm, optimized_guards, + cover, env, core_pp, core_roundtrip, asm, optimized_guards, sys_pre_attributes, dialyzer, warnings, pre_load_check, env_compiler_options, custom_debug_info, bc_options]. @@ -795,9 +795,9 @@ env_1(Simple, Target) -> %% Test pretty-printing in Core Erlang format and then try to %% compile the generated Core Erlang files. -core(Config) when is_list(Config) -> +core_pp(Config) when is_list(Config) -> PrivDir = proplists:get_value(priv_dir, Config), - Outdir = filename:join(PrivDir, "core"), + Outdir = filename:join(PrivDir, atom_to_list(?FUNCTION_NAME)), ok = file:make_dir(Outdir), TestBeams = get_unique_beam_files(), @@ -805,11 +805,11 @@ core(Config) when is_list(Config) -> {raw_abstract_v1,Abstr}}]}} = beam_lib:chunks(Beam, [abstract_code]), {Mod,Abstr} end || Beam <- TestBeams], - test_lib:p_run(fun(F) -> do_core(F, Outdir) end, Abstr). + test_lib:p_run(fun(F) -> do_core_pp(F, Outdir) end, Abstr). -do_core({M,A}, Outdir) -> +do_core_pp({M,A}, Outdir) -> try - do_core_1(M, A, Outdir) + do_core_pp_1(M, A, Outdir) catch throw:{error,Error} -> io:format("*** compilation failure '~p' for module ~s\n", @@ -821,7 +821,7 @@ do_core({M,A}, Outdir) -> error end. -do_core_1(M, A, Outdir) -> +do_core_pp_1(M, A, Outdir) -> {ok,M,Core0} = compile:forms(A, [to_core]), CoreFile = filename:join(Outdir, atom_to_list(M)++".core"), CorePP = core_pp:format(Core0), diff --git a/lib/crypto/c_src/crypto.c b/lib/crypto/c_src/crypto.c index 3f0439ed80..793cff166c 100644 --- a/lib/crypto/c_src/crypto.c +++ b/lib/crypto/c_src/crypto.c @@ -1089,9 +1089,6 @@ static void init_algorithms_types(ErlNifEnv* env) #ifndef OPENSSL_NO_RC4 algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"rc4"); #endif -#if defined(HAVE_GCM) - algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"aes_gcm"); -#endif #if defined(HAVE_CHACHA20_POLY1305) algo_cipher[algo_cipher_cnt++] = enif_make_atom(env,"chacha20_poly1305"); #endif diff --git a/lib/kernel/doc/src/error_logger.xml b/lib/kernel/doc/src/error_logger.xml index 814e8eac46..27db00819f 100644 --- a/lib/kernel/doc/src/error_logger.xml +++ b/lib/kernel/doc/src/error_logger.xml @@ -4,7 +4,7 @@ <erlref> <header> <copyright> - <year>1996</year><year>2016</year> + <year>1996</year><year>2017</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -163,6 +163,19 @@ ok</pre> </desc> </func> <func> + <name name="get_format_depth" arity="0"/> + <fsummary>Get the value of the Kernel application variable + <c>error_logger_format_depth</c>.</fsummary> + <desc> + <p>Returns <c>max(10, Depth)</c>, where <c>Depth</c> is the + value of + <seealso marker="kernel:kernel_app#error_logger_format_depth"> + error_logger_format_depth</seealso> + in the Kernel application, if Depth is an integer. Otherwise, + <c>unlimited</c> is returned.</p> + </desc> + </func> + <func> <name name="info_msg" arity="1"/> <name name="info_msg" arity="2"/> <fsummary>Send a standard information event to the error logger.</fsummary> diff --git a/lib/kernel/src/error_logger.erl b/lib/kernel/src/error_logger.erl index 81f1bf8d97..9bf8547745 100644 --- a/lib/kernel/src/error_logger.erl +++ b/lib/kernel/src/error_logger.erl @@ -31,6 +31,8 @@ handle_event/2, handle_call/2, handle_info/2, terminate/2]). +-export([get_format_depth/0, limit_term/1]). + -define(buffer_size, 10). %%----------------------------------------------------------------- @@ -518,3 +520,21 @@ string_p1([H|T]) when is_list(H) -> end; string_p1([]) -> true; string_p1(_) -> false. + +-spec limit_term(term()) -> term(). + +limit_term(Term) -> + case get_format_depth() of + unlimited -> Term; + D -> io_lib:limit_term(Term, D) + end. + +-spec get_format_depth() -> 'unlimited' | pos_integer(). + +get_format_depth() -> + case application:get_env(kernel, error_logger_format_depth) of + {ok, Depth} when is_integer(Depth) -> + max(10, Depth); + undefined -> + unlimited + end. diff --git a/lib/kernel/src/global.erl b/lib/kernel/src/global.erl index 3d6415036c..a9e92b28b8 100644 --- a/lib/kernel/src/global.erl +++ b/lib/kernel/src/global.erl @@ -447,7 +447,8 @@ info() -> init([]) -> process_flag(trap_exit, true), _ = ets:new(global_locks, [set, named_table, protected]), - _ = ets:new(global_names, [set, named_table, protected]), + _ = ets:new(global_names, [set, named_table, protected, + {read_concurrency, true}]), _ = ets:new(global_names_ext, [set, named_table, protected]), _ = ets:new(global_pid_names, [bag, named_table, protected]), diff --git a/lib/kernel/test/code_SUITE.erl b/lib/kernel/test/code_SUITE.erl index 7831777726..afc32283ba 100644 --- a/lib/kernel/test/code_SUITE.erl +++ b/lib/kernel/test/code_SUITE.erl @@ -107,14 +107,19 @@ init_per_testcase(big_boot_embedded, Config) -> _Else -> {skip, "Needs crypto!"} end; -init_per_testcase(on_load_embedded, Config) -> +init_per_testcase(on_load_embedded, Config0) -> LibRoot = code:lib_dir(), LinkName = filename:join(LibRoot, "on_load_app-1.0"), - [{link_name,LinkName}|Config]; + Config = [{link_name,LinkName}|Config0], + init_per_testcase(Config); init_per_testcase(_Func, Config) -> + init_per_testcase(Config). + +init_per_testcase(Config) -> P = code:get_path(), [{code_path, P}|Config]. + end_per_testcase(module_status, Config) -> code:purge(?TESTMOD), code:delete(?TESTMOD), diff --git a/lib/observer/src/etop.erl b/lib/observer/src/etop.erl index 925f4456bb..2093e6a0d7 100644 --- a/lib/observer/src/etop.erl +++ b/lib/observer/src/etop.erl @@ -180,10 +180,16 @@ stop(Opts) -> end, unregister(etop_server). -update(#opts{store=Store,node=Node,tracing=Tracing}=Opts) -> +update(#opts{store=Store,node=Node,tracing=Tracing,intv=Interval}=Opts) -> Pid = spawn_link(Node,observer_backend,etop_collect,[self()]), Info = receive {Pid,I} -> I - after 1000 -> exit(connection_lost) + after Interval -> + %% Took more than the update interval to fetch + %% data. Either the connection is lost or the + %% fetching took too long... + io:format("Timeout when waiting for process info from " + "node ~p; exiting~n", [Node]), + exit(timeout) end, #etop_info{procinfo=ProcInfo} = Info, ProcInfo1 = diff --git a/lib/sasl/src/sasl_report.erl b/lib/sasl/src/sasl_report.erl index 14702b0ad2..eb454155d5 100644 --- a/lib/sasl/src/sasl_report.erl +++ b/lib/sasl/src/sasl_report.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2016. All Rights Reserved. +%% Copyright Ericsson AB 1996-2017. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -68,12 +68,12 @@ write_report2(IO, Fd, Head, progress, Report) -> Format = format_key_val(Report), write_report_action(IO, Fd, Head, "~s", [Format]); write_report2(IO, Fd, Head, crash_report, Report) -> - Depth = get_depth(), + Depth = error_logger:get_format_depth(), Format = proc_lib:format(Report, latin1, Depth), write_report_action(IO, Fd, Head, "~s", [Format]). supervisor_format(Args0) -> - case get_depth() of + case error_logger:get_format_depth() of unlimited -> {" Supervisor: ~p~n" " Context: ~p~n" @@ -102,14 +102,6 @@ format_key_val([{Tag,Data}|Rep]) -> format_key_val(_) -> []. -get_depth() -> - case application:get_env(kernel, error_logger_format_depth) of - {ok, Depth} when is_integer(Depth) -> - max(10, Depth); - undefined -> - unlimited - end. - sup_get(Tag, Report) -> case lists:keysearch(Tag, 1, Report) of {value, {_, Value}} -> diff --git a/lib/stdlib/src/error_logger_file_h.erl b/lib/stdlib/src/error_logger_file_h.erl index 0b262de3ab..76f89841b9 100644 --- a/lib/stdlib/src/error_logger_file_h.erl +++ b/lib/stdlib/src/error_logger_file_h.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2016. All Rights Reserved. +%% Copyright Ericsson AB 1996-2017. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -57,7 +57,7 @@ init(File, PrevHandler) -> process_flag(trap_exit, true), case file:open(File, [write]) of {ok,Fd} -> - Depth = get_depth(), + Depth = error_logger:get_format_depth(), State = #st{fd=Fd,filename=File,prev_handler=PrevHandler, depth=Depth}, {ok, State}; @@ -65,14 +65,6 @@ init(File, PrevHandler) -> Error end. -get_depth() -> - case application:get_env(kernel, error_logger_format_depth) of - {ok, Depth} when is_integer(Depth) -> - max(10, Depth); - undefined -> - unlimited - end. - handle_event({_Type, GL, _Msg}, State) when node(GL) =/= node() -> {ok, State}; handle_event(Event, State) -> diff --git a/lib/stdlib/src/error_logger_tty_h.erl b/lib/stdlib/src/error_logger_tty_h.erl index 2f2fd65252..8f0d7b0362 100644 --- a/lib/stdlib/src/error_logger_tty_h.erl +++ b/lib/stdlib/src/error_logger_tty_h.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2016. All Rights Reserved. +%% Copyright Ericsson AB 1996-2017. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -44,7 +44,7 @@ %% This one is used when we takeover from the simple error_logger. init({[], {error_logger, Buf}}) -> User = set_group_leader(), - Depth = get_depth(), + Depth = error_logger:get_format_depth(), State = #st{user=User,prev_handler=error_logger,depth=Depth}, write_events(State, Buf), {ok, State}; @@ -56,17 +56,9 @@ init({[], {error_logger_tty_h, PrevHandler}}) -> %% This one is used when we are started directly. init([]) -> User = set_group_leader(), - Depth = get_depth(), + Depth = error_logger:get_format_depth(), {ok, #st{user=User,prev_handler=[],depth=Depth}}. -get_depth() -> - case application:get_env(kernel, error_logger_format_depth) of - {ok, Depth} when is_integer(Depth) -> - max(10, Depth); - undefined -> - unlimited - end. - handle_event({_Type, GL, _Msg}, State) when node(GL) =/= node() -> {ok, State}; handle_event(Event, State) -> diff --git a/lib/stdlib/src/escript.erl b/lib/stdlib/src/escript.erl index 6e8f780f7c..f2629a47c2 100644 --- a/lib/stdlib/src/escript.erl +++ b/lib/stdlib/src/escript.erl @@ -284,8 +284,9 @@ start(EscriptOptions) -> io:format("escript: ~s\n", [Str]), my_halt(127); _:Reason -> + Stk = erlang:get_stacktrace(), io:format("escript: Internal error: ~p\n", [Reason]), - io:format("~p\n", [erlang:get_stacktrace()]), + io:format("~p\n", [Stk]), my_halt(127) end. diff --git a/lib/stdlib/src/gen_server.erl b/lib/stdlib/src/gen_server.erl index ba0a7ae8e5..a3d53efd0d 100644 --- a/lib/stdlib/src/gen_server.erl +++ b/lib/stdlib/src/gen_server.erl @@ -107,7 +107,9 @@ %% Internal exports -export([init_it/6]). --import(error_logger, [format/2]). +-define( + STACKTRACE(), + try throw(ok) catch _ -> erlang:get_stacktrace() end). %%%========================================================================= %%% API @@ -326,15 +328,16 @@ init_it(Starter, self, Name, Mod, Args, Options) -> init_it(Starter, Parent, Name0, Mod, Args, Options) -> Name = gen:name(Name0), Debug = gen:debug_options(Name, Options), - HibernateAfterTimeout = gen:hibernate_after(Options), - case catch Mod:init(Args) of - {ok, State} -> + HibernateAfterTimeout = gen:hibernate_after(Options), + + case init_it(Mod, Args) of + {ok, {ok, State}} -> proc_lib:init_ack(Starter, {ok, self()}), loop(Parent, Name, State, Mod, infinity, HibernateAfterTimeout, Debug); - {ok, State, Timeout} -> + {ok, {ok, State, Timeout}} -> proc_lib:init_ack(Starter, {ok, self()}), loop(Parent, Name, State, Mod, Timeout, HibernateAfterTimeout, Debug); - {stop, Reason} -> + {ok, {stop, Reason}} -> %% For consistency, we must make sure that the %% registered name (if any) is unregistered before %% the parent process is notified about the failure. @@ -344,18 +347,25 @@ init_it(Starter, Parent, Name0, Mod, Args, Options) -> gen:unregister_name(Name0), proc_lib:init_ack(Starter, {error, Reason}), exit(Reason); - ignore -> + {ok, ignore} -> gen:unregister_name(Name0), proc_lib:init_ack(Starter, ignore), exit(normal); - {'EXIT', Reason} -> - gen:unregister_name(Name0), - proc_lib:init_ack(Starter, {error, Reason}), - exit(Reason); - Else -> + {ok, Else} -> Error = {bad_return_value, Else}, proc_lib:init_ack(Starter, {error, Error}), - exit(Error) + exit(Error); + {'EXIT', Class, Reason, Stacktrace} -> + gen:unregister_name(Name0), + proc_lib:init_ack(Starter, {error, terminate_reason(Class, Reason, Stacktrace)}), + erlang:raise(Class, Reason, Stacktrace) + end. +init_it(Mod, Args) -> + try + {ok, Mod:init(Args)} + catch + throw:R -> {ok, R}; + Class:R -> {'EXIT', Class, R, erlang:get_stacktrace()} end. %%%======================================================================== @@ -397,7 +407,7 @@ decode_msg(Msg, Parent, Name, State, Mod, Time, HibernateAfterTimeout, Debug, Hi sys:handle_system_msg(Req, From, Parent, ?MODULE, Debug, [Name, State, Mod, Time, HibernateAfterTimeout], Hib); {'EXIT', Parent, Reason} -> - terminate(Reason, Name, undefined, Msg, Mod, State, Debug); + terminate(Reason, ?STACKTRACE(), Name, undefined, Msg, Mod, State, Debug); _Msg when Debug =:= [] -> handle_msg(Msg, Parent, Name, State, Mod, HibernateAfterTimeout); _Msg -> @@ -589,17 +599,11 @@ start_monitor(Node, Name) when is_atom(Node), is_atom(Name) -> %% --------------------------------------------------- %% Helper functions for try-catch of callbacks. %% Returns the return value of the callback, or -%% {'EXIT', ExitReason, ReportReason} (if an exception occurs) -%% -%% ExitReason is the reason that shall be used when the process -%% terminates. +%% {'EXIT', Class, Reason, Stack} (if an exception occurs) %% -%% ReportReason is the reason that shall be printed in the error -%% report. -%% -%% These functions are introduced in order to add the stack trace in -%% the error report produced when a callback is terminated with -%% erlang:exit/1 (OTP-12263). +%% The Class, Reason and Stack are given to erlang:raise/3 +%% to make sure proc_lib receives the proper reasons and +%% stacktraces. %% --------------------------------------------------- try_dispatch({'$gen_cast', Msg}, Mod, State) -> @@ -621,15 +625,10 @@ try_dispatch(Mod, Func, Msg, State) -> [Mod, Msg]), {ok, {noreply, State}}; true -> - Stacktrace = erlang:get_stacktrace(), - {'EXIT', {R, Stacktrace}, {R, Stacktrace}} + {'EXIT', error, R, erlang:get_stacktrace()} end; - error:R -> - Stacktrace = erlang:get_stacktrace(), - {'EXIT', {R, Stacktrace}, {R, Stacktrace}}; - exit:R -> - Stacktrace = erlang:get_stacktrace(), - {'EXIT', R, {R, Stacktrace}} + Class:R -> + {'EXIT', Class, R, erlang:get_stacktrace()} end. try_handle_call(Mod, Msg, From, State) -> @@ -638,12 +637,8 @@ try_handle_call(Mod, Msg, From, State) -> catch throw:R -> {ok, R}; - error:R -> - Stacktrace = erlang:get_stacktrace(), - {'EXIT', {R, Stacktrace}, {R, Stacktrace}}; - exit:R -> - Stacktrace = erlang:get_stacktrace(), - {'EXIT', R, {R, Stacktrace}} + Class:R -> + {'EXIT', Class, R, erlang:get_stacktrace()} end. try_terminate(Mod, Reason, State) -> @@ -654,12 +649,8 @@ try_terminate(Mod, Reason, State) -> catch throw:R -> {ok, R}; - error:R -> - Stacktrace = erlang:get_stacktrace(), - {'EXIT', {R, Stacktrace}, {R, Stacktrace}}; - exit:R -> - Stacktrace = erlang:get_stacktrace(), - {'EXIT', R, {R, Stacktrace}} + Class:R -> + {'EXIT', Class, R, erlang:get_stacktrace()} end; false -> {ok, ok} @@ -684,10 +675,11 @@ handle_msg({'$gen_call', From, Msg}, Parent, Name, State, Mod, HibernateAfterTim {ok, {noreply, NState, Time1}} -> loop(Parent, Name, NState, Mod, Time1, HibernateAfterTimeout, []); {ok, {stop, Reason, Reply, NState}} -> - {'EXIT', R} = - (catch terminate(Reason, Name, From, Msg, Mod, NState, [])), - reply(From, Reply), - exit(R); + try + terminate(Reason, ?STACKTRACE(), Name, From, Msg, Mod, NState, []) + after + reply(From, Reply) + end; Other -> handle_common_reply(Other, Parent, Name, From, Msg, Mod, HibernateAfterTimeout, State) end; handle_msg(Msg, Parent, Name, State, Mod, HibernateAfterTimeout) -> @@ -712,10 +704,11 @@ handle_msg({'$gen_call', From, Msg}, Parent, Name, State, Mod, HibernateAfterTim {noreply, NState}), loop(Parent, Name, NState, Mod, Time1, HibernateAfterTimeout, Debug1); {ok, {stop, Reason, Reply, NState}} -> - {'EXIT', R} = - (catch terminate(Reason, Name, From, Msg, Mod, NState, Debug)), - _ = reply(Name, From, Reply, NState, Debug), - exit(R); + try + terminate(Reason, ?STACKTRACE(), Name, From, Msg, Mod, NState, Debug) + after + _ = reply(Name, From, Reply, NState, Debug) + end; Other -> handle_common_reply(Other, Parent, Name, From, Msg, Mod, HibernateAfterTimeout, State, Debug) end; @@ -730,11 +723,11 @@ handle_common_reply(Reply, Parent, Name, From, Msg, Mod, HibernateAfterTimeout, {ok, {noreply, NState, Time1}} -> loop(Parent, Name, NState, Mod, Time1, HibernateAfterTimeout, []); {ok, {stop, Reason, NState}} -> - terminate(Reason, Name, From, Msg, Mod, NState, []); - {'EXIT', ExitReason, ReportReason} -> - terminate(ExitReason, ReportReason, Name, From, Msg, Mod, State, []); + terminate(Reason, ?STACKTRACE(), Name, From, Msg, Mod, NState, []); + {'EXIT', Class, Reason, Stacktrace} -> + terminate(Class, Reason, Stacktrace, Name, From, Msg, Mod, State, []); {ok, BadReply} -> - terminate({bad_return_value, BadReply}, Name, From, Msg, Mod, State, []) + terminate({bad_return_value, BadReply}, ?STACKTRACE(), Name, From, Msg, Mod, State, []) end. handle_common_reply(Reply, Parent, Name, From, Msg, Mod, HibernateAfterTimeout, State, Debug) -> @@ -748,11 +741,11 @@ handle_common_reply(Reply, Parent, Name, From, Msg, Mod, HibernateAfterTimeout, {noreply, NState}), loop(Parent, Name, NState, Mod, Time1, HibernateAfterTimeout, Debug1); {ok, {stop, Reason, NState}} -> - terminate(Reason, Name, From, Msg, Mod, NState, Debug); - {'EXIT', ExitReason, ReportReason} -> - terminate(ExitReason, ReportReason, Name, From, Msg, Mod, State, Debug); + terminate(Reason, ?STACKTRACE(), Name, From, Msg, Mod, NState, Debug); + {'EXIT', Class, Reason, Stacktrace} -> + terminate(Class, Reason, Stacktrace, Name, From, Msg, Mod, State, Debug); {ok, BadReply} -> - terminate({bad_return_value, BadReply}, Name, From, Msg, Mod, State, Debug) + terminate({bad_return_value, BadReply}, ?STACKTRACE(), Name, From, Msg, Mod, State, Debug) end. reply(Name, {To, Tag}, Reply, State, Debug) -> @@ -770,7 +763,7 @@ system_continue(Parent, Debug, [Name, State, Mod, Time, HibernateAfterTimeout]) -spec system_terminate(_, _, _, [_]) -> no_return(). system_terminate(Reason, _Parent, Debug, [Name, State, Mod, _Time, _HibernateAfterTimeout]) -> - terminate(Reason, Name, undefined, [], Mod, State, Debug). + terminate(Reason, ?STACKTRACE(), Name, undefined, [], Mod, State, Debug). system_code_change([Name, State, Mod, Time, HibernateAfterTimeout], _Module, OldVsn, Extra) -> case catch Mod:code_change(OldVsn, State, Extra) of @@ -811,35 +804,58 @@ print_event(Dev, Event, Name) -> %%% --------------------------------------------------- %%% Terminate the server. +%%% +%%% terminate/8 is triggered by {stop, Reason} or bad +%%% return values. The stacktrace is generated via the +%%% ?STACKTRACE() macro and the ReportReason must not +%%% be wrapped in tuples. +%%% +%%% terminate/9 is triggered in case of error/exit in +%%% the user callback. In this case the report reason +%%% always includes the user stacktrace. +%%% +%%% The reason received in the terminate/2 callbacks +%%% always includes the stacktrace for errors and never +%%% for exits. %%% --------------------------------------------------- - --spec terminate(_, _, _, _, _, _, _) -> no_return(). -terminate(Reason, Name, From, Msg, Mod, State, Debug) -> - terminate(Reason, Reason, Name, From, Msg, Mod, State, Debug). -spec terminate(_, _, _, _, _, _, _, _) -> no_return(). -terminate(ExitReason, ReportReason, Name, From, Msg, Mod, State, Debug) -> - Reply = try_terminate(Mod, ExitReason, State), +terminate(Reason, Stacktrace, Name, From, Msg, Mod, State, Debug) -> + terminate(exit, Reason, Stacktrace, Reason, Name, From, Msg, Mod, State, Debug). + +-spec terminate(_, _, _, _, _, _, _, _, _) -> no_return(). +terminate(Class, Reason, Stacktrace, Name, From, Msg, Mod, State, Debug) -> + ReportReason = {Reason, Stacktrace}, + terminate(Class, Reason, Stacktrace, ReportReason, Name, From, Msg, Mod, State, Debug). + +-spec terminate(_, _, _, _, _, _, _, _, _, _) -> no_return(). +terminate(Class, Reason, Stacktrace, ReportReason, Name, From, Msg, Mod, State, Debug) -> + Reply = try_terminate(Mod, terminate_reason(Class, Reason, Stacktrace), State), case Reply of - {'EXIT', ExitReason1, ReportReason1} -> + {'EXIT', C, R, S} -> FmtState = format_status(terminate, Mod, get(), State), - error_info(ReportReason1, Name, From, Msg, FmtState, Debug), - exit(ExitReason1); + error_info({R, S}, Name, From, Msg, FmtState, Debug), + erlang:raise(C, R, S); _ -> - case ExitReason of - normal -> - exit(normal); - shutdown -> - exit(shutdown); - {shutdown,_}=Shutdown -> - exit(Shutdown); + case {Class, Reason} of + {exit, normal} -> ok; + {exit, shutdown} -> ok; + {exit, {shutdown,_}} -> ok; _ -> FmtState = format_status(terminate, Mod, get(), State), - error_info(ReportReason, Name, From, Msg, FmtState, Debug), - exit(ExitReason) + error_info(ReportReason, Name, From, Msg, FmtState, Debug) end + end, + case Stacktrace of + [] -> + erlang:Class(Reason); + _ -> + erlang:raise(Class, Reason, Stacktrace) end. +terminate_reason(error, Reason, Stacktrace) -> {Reason, Stacktrace}; +terminate_reason(exit, Reason, _Stacktrace) -> Reason. + error_info(_Reason, application_controller, _From, _Msg, _State, _Debug) -> %% OTP-5811 Don't send an error report if it's the system process %% application_controller which is terminating - let init take care @@ -861,14 +877,15 @@ error_info(Reason, Name, From, Msg, State, Debug) -> end end; _ -> - Reason + error_logger:limit_term(Reason) end, {ClientFmt, ClientArgs} = client_stacktrace(From), - format("** Generic server ~p terminating \n" - "** Last message in was ~p~n" - "** When Server state == ~p~n" - "** Reason for termination == ~n** ~p~n" ++ ClientFmt, - [Name, Msg, State, Reason1] ++ ClientArgs), + LimitedState = error_logger:limit_term(State), + error_logger:format("** Generic server ~p terminating \n" + "** Last message in was ~p~n" + "** When Server state == ~p~n" + "** Reason for termination == ~n** ~p~n" ++ ClientFmt, + [Name, Msg, LimitedState, Reason1] ++ ClientArgs), sys:print_log(Debug), ok. client_stacktrace(undefined) -> diff --git a/lib/stdlib/src/gen_statem.erl b/lib/stdlib/src/gen_statem.erl index 86109f04b4..b5e9da1e66 100644 --- a/lib/stdlib/src/gen_statem.erl +++ b/lib/stdlib/src/gen_statem.erl @@ -1722,6 +1722,8 @@ error_info( end; _ -> {Reason,Stacktrace} end, + [LimitedP, LimitedFmtData, LimitedFixedReason] = + [error_logger:limit_term(D) || D <- [P, FmtData, FixedReason]], CBMode = case StateEnter of true -> @@ -1755,8 +1757,8 @@ error_info( [] -> []; [Event|_] -> [Event] end] ++ - [FmtData, - Class,FixedReason, + [LimitedFmtData, + Class,LimitedFixedReason, CBMode] ++ case Q of [_|[_|_] = Events] -> [Events]; @@ -1764,7 +1766,7 @@ error_info( end ++ case P of [] -> []; - _ -> [P] + _ -> [LimitedP] end ++ case FixedStacktrace of [] -> []; diff --git a/lib/stdlib/src/io_lib.erl b/lib/stdlib/src/io_lib.erl index 5ed2f4d888..9d447418f8 100644 --- a/lib/stdlib/src/io_lib.erl +++ b/lib/stdlib/src/io_lib.erl @@ -84,6 +84,8 @@ -export([write_unicode_string/1, write_unicode_char/1, deep_unicode_char_list/1]). +-export([limit_term/2]). + -export_type([chars/0, latin1_string/0, continuation/0, fread_error/0, fread_item/0, format_spec/0]). @@ -911,3 +913,116 @@ binrev(L) -> binrev(L, T) -> list_to_binary(lists:reverse(L, T)). + +-spec limit_term(term(), non_neg_integer()) -> term(). + +%% The intention is to mimic the depth limitation of io_lib:write() +%% and io_lib_pretty:print(). The leaves ('...') should never be +%% seen when printed with the same depth. Bitstrings are never +%% truncated, which is OK as long as they are not sent to other nodes. +limit_term(Term, Depth) -> + try test_limit(Term, Depth) of + ok -> Term + catch + throw:limit -> + limit(Term, Depth) + end. + +limit(_, 0) -> '...'; +limit([H|T]=L, D) -> + if + D =:= 1 -> '...'; + true -> + case printable_list(L) of + true -> L; + false -> + [limit(H, D-1)|limit_tail(T, D-1)] + end + end; +limit(Term, D) when is_map(Term) -> + limit_map(Term, D); +limit({}=T, _D) -> T; +limit(T, D) when is_tuple(T) -> + if + D =:= 1 -> '...'; + true -> + list_to_tuple([limit(element(1, T), D-1)| + limit_tail(tl(tuple_to_list(T)), D-1)]) + end; +limit(<<_/bitstring>>=Term, D) -> limit_bitstring(Term, D); +limit(Term, _D) -> Term. + +limit_tail([], _D) -> []; +limit_tail(_, 1) -> ['...']; +limit_tail([H|T], D) -> + [limit(H, D-1)|limit_tail(T, D-1)]; +limit_tail(Other, D) -> + limit(Other, D-1). + +%% Cannot limit maps properly since there is no guarantee that +%% maps:from_list() creates a map with the same internal ordering of +%% the selected associations as in Map. +limit_map(Map, D) -> + maps:from_list(erts_internal:maps_to_list(Map, D)). +%% maps:from_list(limit_map_body(erts_internal:maps_to_list(Map, D), D)). + +%% limit_map_body(_, 0) -> [{'...', '...'}]; +%% limit_map_body([], _) -> []; +%% limit_map_body([{K,V}], D) -> [limit_map_assoc(K, V, D)]; +%% limit_map_body([{K,V}|KVs], D) -> +%% [limit_map_assoc(K, V, D) | limit_map_body(KVs, D-1)]. + +%% limit_map_assoc(K, V, D) -> +%% {limit(K, D-1), limit(V, D-1)}. + +limit_bitstring(B, _D) -> B. %% Keeps all printable binaries. + +test_limit(_, 0) -> throw(limit); +test_limit([H|T]=L, D) when is_integer(D) -> + if + D =:= 1 -> throw(limit); + true -> + case printable_list(L) of + true -> ok; + false -> + test_limit(H, D-1), + test_limit_tail(T, D-1) + end + end; +test_limit(Term, D) when is_map(Term) -> + test_limit_map(Term, D); +test_limit({}, _D) -> ok; +test_limit(T, D) when is_tuple(T) -> + test_limit_tuple(T, 1, tuple_size(T), D); +test_limit(<<_/bitstring>>=Term, D) -> test_limit_bitstring(Term, D); +test_limit(_Term, _D) -> ok. + +test_limit_tail([], _D) -> ok; +test_limit_tail(_, 1) -> throw(limit); +test_limit_tail([H|T], D) -> + test_limit(H, D-1), + test_limit_tail(T, D-1); +test_limit_tail(Other, D) -> + test_limit(Other, D-1). + +test_limit_tuple(_T, I, Sz, _D) when I > Sz -> ok; +test_limit_tuple(_, _, _, 1) -> throw(limit); +test_limit_tuple(T, I, Sz, D) -> + test_limit(element(I, T), D-1), + test_limit_tuple(T, I+1, Sz, D-1). + +test_limit_map(_Map, _D) -> ok. +%% test_limit_map_body(erts_internal:maps_to_list(Map, D), D). + +%% test_limit_map_body(_, 0) -> throw(limit); +%% test_limit_map_body([], _) -> ok; +%% test_limit_map_body([{K,V}], D) -> test_limit_map_assoc(K, V, D); +%% test_limit_map_body([{K,V}|KVs], D) -> +%% test_limit_map_assoc(K, V, D), +%% test_limit_map_body(KVs, D-1). + +%% test_limit_map_assoc(K, V, D) -> +%% test_limit(K, D-1), +%% test_limit(V, D-1). + +test_limit_bitstring(_, _) -> ok. diff --git a/lib/stdlib/src/proc_lib.erl b/lib/stdlib/src/proc_lib.erl index 363705b0f4..3fa54cd0d5 100644 --- a/lib/stdlib/src/proc_lib.erl +++ b/lib/stdlib/src/proc_lib.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 1996-2016. All Rights Reserved. +%% Copyright Ericsson AB 1996-2017. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -264,12 +264,12 @@ exit_p(Class, Reason, Stacktrace) -> case get('$initial_call') of {M,F,A} when is_atom(M), is_atom(F), is_integer(A) -> MFA = {M,F,make_dummy_args(A, [])}, - crash_report(Class, Reason, MFA), + crash_report(Class, Reason, MFA, Stacktrace), erlang:raise(exit, exit_reason(Class, Reason, Stacktrace), Stacktrace); _ -> %% The process dictionary has been cleared or %% possibly modified. - crash_report(Class, Reason, []), + crash_report(Class, Reason, [], Stacktrace), erlang:raise(exit, exit_reason(Class, Reason, Stacktrace), Stacktrace) end. @@ -499,26 +499,28 @@ trans_init(M, F, A) when is_atom(M), is_atom(F) -> %% Generate a crash report. %% ----------------------------------------------------- -crash_report(exit, normal, _) -> ok; -crash_report(exit, shutdown, _) -> ok; -crash_report(exit, {shutdown,_}, _) -> ok; -crash_report(Class, Reason, StartF) -> - OwnReport = my_info(Class, Reason, StartF), +crash_report(exit, normal, _, _) -> ok; +crash_report(exit, shutdown, _, _) -> ok; +crash_report(exit, {shutdown,_}, _, _) -> ok; +crash_report(Class, Reason, StartF, Stacktrace) -> + OwnReport = my_info(Class, Reason, StartF, Stacktrace), LinkReport = linked_info(self()), Rep = [OwnReport,LinkReport], error_logger:error_report(crash_report, Rep). -my_info(Class, Reason, []) -> - my_info_1(Class, Reason); -my_info(Class, Reason, StartF) -> - [{initial_call, StartF}|my_info_1(Class, Reason)]. +my_info(Class, Reason, [], Stacktrace) -> + my_info_1(Class, Reason, Stacktrace); +my_info(Class, Reason, StartF, Stacktrace) -> + [{initial_call, StartF}| + my_info_1(Class, Reason, Stacktrace)]. -my_info_1(Class, Reason) -> +my_info_1(Class, Reason, Stacktrace) -> [{pid, self()}, get_process_info(self(), registered_name), - {error_info, {Class,Reason,erlang:get_stacktrace()}}, + {error_info, {Class,Reason,Stacktrace}}, get_ancestors(self()), - get_process_info(self(), messages), + get_process_info(self(), message_queue_len), + get_messages(self()), get_process_info(self(), links), get_cleaned_dictionary(self()), get_process_info(self(), trap_exit), @@ -538,12 +540,49 @@ get_ancestors(Pid) -> {ancestors,[]} end. +%% The messages and the dictionary are possibly limited too much if +%% some error handles output the messages or the dictionary using ~P +%% or ~W with depth greater than the depth used here (the depth of +%% control characters P and W takes precedence over the depth set by +%% application variable error_logger_format_depth). However, it is +%% assumed that all report handlers call proc_lib:format(). +get_messages(Pid) -> + Messages = get_process_messages(Pid), + {messages, error_logger:limit_term(Messages)}. + +get_process_messages(Pid) -> + Depth = error_logger:get_format_depth(), + case Pid =/= self() orelse Depth =:= unlimited of + true -> + {messages, Messages} = get_process_info(Pid, messages), + Messages; + false -> + %% If there are more messages than Depth, garbage + %% collection can sometimes be avoided by collecting just + %% enough messages for the crash report. It is assumed the + %% process is about to die anyway. + receive_messages(Depth) + end. + +receive_messages(0) -> []; +receive_messages(N) -> + receive + M -> + [M|receive_messages(N - 1)] + after 0 -> + [] + end. + get_cleaned_dictionary(Pid) -> case get_process_info(Pid,dictionary) of - {dictionary,Dict} -> {dictionary,clean_dict(Dict)}; + {dictionary,Dict} -> {dictionary,cleaned_dict(Dict)}; _ -> {dictionary,[]} end. +cleaned_dict(Dict) -> + CleanDict = clean_dict(Dict), + error_logger:limit_term(CleanDict). + clean_dict([{'$ancestors',_}|Dict]) -> clean_dict(Dict); clean_dict([{'$initial_call',_}|Dict]) -> @@ -581,20 +620,24 @@ make_neighbour_reports1([P|Ps]) -> make_neighbour_reports1([]) -> []. +%% Do not include messages or process dictionary, even if +%% error_logger_format_depth is unlimited. make_neighbour_report(Pid) -> [{pid, Pid}, get_process_info(Pid, registered_name), get_initial_call(Pid), get_process_info(Pid, current_function), get_ancestors(Pid), - get_process_info(Pid, messages), + get_process_info(Pid, message_queue_len), + %% get_messages(Pid), get_process_info(Pid, links), - get_cleaned_dictionary(Pid), + %% get_cleaned_dictionary(Pid), get_process_info(Pid, trap_exit), get_process_info(Pid, status), get_process_info(Pid, heap_size), get_process_info(Pid, stack_size), - get_process_info(Pid, reductions) + get_process_info(Pid, reductions), + get_process_info(Pid, current_stacktrace) ]. get_initial_call(Pid) -> @@ -721,24 +764,37 @@ format(CrashReport, Encoding) -> format([OwnReport,LinkReport], Encoding, Depth) -> Extra = {Encoding,Depth}, - OwnFormat = format_report(OwnReport, Extra), - LinkFormat = format_report(LinkReport, Extra), + MyIndent = " ", + OwnFormat = format_report(OwnReport, MyIndent, Extra), + LinkFormat = format_link_report(LinkReport, MyIndent, Extra), Str = io_lib:format(" crasher:~n~ts neighbours:~n~ts", [OwnFormat, LinkFormat]), lists:flatten(Str). -format_report(Rep, Extra) when is_list(Rep) -> - format_rep(Rep, Extra); -format_report(Rep, {Enc,_}) -> - io_lib:format("~"++modifier(Enc)++"p~n", [Rep]). - -format_rep([{initial_call,InitialCall}|Rep], {_Enc,Depth}=Extra) -> - [format_mfa(InitialCall, Depth)|format_rep(Rep, Extra)]; -format_rep([{error_info,{Class,Reason,StackTrace}}|Rep], Extra) -> - [format_exception(Class, Reason, StackTrace, Extra)|format_rep(Rep, Extra)]; -format_rep([{Tag,Data}|Rep], Extra) -> - [format_tag(Tag, Data, Extra)|format_rep(Rep, Extra)]; -format_rep(_, _Extra) -> +format_link_report([Link|Reps], Indent, Extra) -> + Rep = case Link of + {neighbour,Rep0} -> Rep0; + _ -> Link + end, + LinkIndent = [" ",Indent], + [Indent,"neighbour:\n",format_report(Rep, LinkIndent, Extra)| + format_link_report(Reps, Indent, Extra)]; +format_link_report([], _, _) -> + []. + +format_report(Rep, Indent, Extra) when is_list(Rep) -> + format_rep(Rep, Indent, Extra); +format_report(Rep, Indent, {Enc,Depth}) -> + io_lib:format("~s~"++modifier(Enc)++"P~n", [Indent, Rep, Depth]). + +format_rep([{initial_call,InitialCall}|Rep], Indent, Extra) -> + [format_mfa(Indent, InitialCall, Extra)|format_rep(Rep, Indent, Extra)]; +format_rep([{error_info,{Class,Reason,StackTrace}}|Rep], Indent, Extra) -> + [format_exception(Class, Reason, StackTrace, Extra)| + format_rep(Rep, Indent, Extra)]; +format_rep([{Tag,Data}|Rep], Indent, Extra) -> + [format_tag(Indent, Tag, Data, Extra)|format_rep(Rep, Indent, Extra)]; +format_rep(_, _, _Extra) -> []. format_exception(Class, Reason, StackTrace, {Enc,_}=Extra) -> @@ -749,14 +805,14 @@ format_exception(Class, Reason, StackTrace, {Enc,_}=Extra) -> [EI, lib:format_exception(1+length(EI), Class, Reason, StackTrace, StackFun, PF, Enc), "\n"]. -format_mfa({M,F,Args}=StartF, Depth) -> +format_mfa(Indent, {M,F,Args}=StartF, Extra) -> try A = length(Args), - [" initial call: ",atom_to_list(M),$:,atom_to_list(F),$/, + [Indent,"initial call: ",atom_to_list(M),$:,atom_to_list(F),$/, integer_to_list(A),"\n"] catch error:_ -> - format_tag(initial_call, StartF, Depth) + format_tag(Indent, initial_call, StartF, Extra) end. pp_fun({Enc,Depth}) -> @@ -769,12 +825,12 @@ pp_fun({Enc,Depth}) -> io_lib:format("~." ++ integer_to_list(I) ++ P, [Term|Tl]) end. -format_tag(Tag, Data, {_Enc,Depth}) -> +format_tag(Indent, Tag, Data, {_Enc,Depth}) -> case Depth of unlimited -> - io_lib:format(" ~p: ~80.18p~n", [Tag, Data]); + io_lib:format("~s~p: ~80.18p~n", [Indent, Tag, Data]); _ -> - io_lib:format(" ~p: ~80.18P~n", [Tag, Data, Depth]) + io_lib:format("~s~p: ~80.18P~n", [Indent, Tag, Data, Depth]) end. modifier(latin1) -> ""; diff --git a/lib/stdlib/test/gen_server_SUITE.erl b/lib/stdlib/test/gen_server_SUITE.erl index 7e3c71715e..2e9dc4d4fb 100644 --- a/lib/stdlib/test/gen_server_SUITE.erl +++ b/lib/stdlib/test/gen_server_SUITE.erl @@ -404,7 +404,7 @@ crash(Config) when is_list(Config) -> end, receive {error_report,_,{Pid4,crash_report,[List4|_]}} -> - {exit,crashed,_} = proplists:get_value(error_info, List4), + {exit,crashed,[{?MODULE, handle_call, 3, _}|_]} = proplists:get_value(error_info, List4), Pid4 = proplists:get_value(pid, List4); Other4 -> io:format("Unexpected: ~p", [Other4]), diff --git a/lib/stdlib/test/io_SUITE.erl b/lib/stdlib/test/io_SUITE.erl index ef3f0be5d7..e2c73371cd 100644 --- a/lib/stdlib/test/io_SUITE.erl +++ b/lib/stdlib/test/io_SUITE.erl @@ -31,7 +31,7 @@ otp_10836/1, io_lib_width_too_small/1, io_with_huge_message_queue/1, format_string/1, maps/1, coverage/1, otp_14178_unicode_atoms/1, otp_14175/1, - otp_14285/1]). + otp_14285/1, limit_term/1]). -export([pretty/2]). @@ -63,7 +63,7 @@ all() -> io_lib_print_binary_depth_one, otp_10302, otp_10755, otp_10836, io_lib_width_too_small, io_with_huge_message_queue, format_string, maps, coverage, otp_14178_unicode_atoms, otp_14175, - otp_14285]. + otp_14285, limit_term]. %% Error cases for output. error_1(Config) when is_list(Config) -> @@ -2373,3 +2373,58 @@ otp_14285(_Config) -> latin1_fmt(Fmt, Args) -> L = fmt(Fmt, Args), true = lists:all(fun is_latin1/1, L). + +limit_term(_Config) -> + {_, 2} = limt([a,b,c], 2), + {_, 2} = limt([a,b,c], 3), + {_, 2} = limt([a,b|c], 2), + {_, 2} = limt([a,b|c], 3), + {_, 2} = limt({a,b,c,[d,e]}, 2), + {_, 2} = limt({a,b,c,[d,e]}, 3), + {_, 2} = limt({a,b,c,[d,e]}, 4), + {_, 1} = limt(<<"foo">>, 18), + ok = blimt(<<"123456789012345678901234567890">>), + {_, 1} = limt(<<7:3>>, 2), + {_, 1} = limt(<<7:21>>, 2), + {_, 1} = limt([], 2), + {_, 1} = limt({}, 2), + {_, 1} = limt(#{}, 2), + {_, 1} = limt(#{[] => {}}, 2), + {_, 1} = limt(#{[] => {}}, 3), + T = #{[] => {},[a] => [b]}, + {_, 1} = limt(T, 2), + {_, 1} = limt(T, 3), + {_, 1} = limt(T, 4), + ok. + +blimt(Binary) -> + blimt(Binary, byte_size(Binary)). + +blimt(_B, 1) -> ok; +blimt(B, D) -> + {_, 1} = limt(B, D), + blimt(B, D - 1). + +limt(Term, Depth) when is_integer(Depth) -> + T1 = io_lib:limit_term(Term, Depth), + S = form(Term, Depth), + S1 = form(T1, Depth), + OK1 = S1 =:= S, + + T2 = io_lib:limit_term(Term, Depth+1), + S2 = form(T2, Depth), + OK2 = S2 =:= S, + + T3 = io_lib:limit_term(Term, Depth-1), + S3 = form(T3, Depth), + OK3 = S3 =/= S, + + R = case {OK1, OK2, OK3} of + {true, true, true} -> 2; + {true, true, false} -> 1; + _ -> 0 + end, + {{S, S1, S2}, R}. + +form(Term, Depth) -> + lists:flatten(io_lib:format("~W", [Term, Depth])). diff --git a/system/doc/programming_examples/bit_syntax.xml b/system/doc/programming_examples/bit_syntax.xml index 0af295b7b7..98ad2808cf 100644 --- a/system/doc/programming_examples/bit_syntax.xml +++ b/system/doc/programming_examples/bit_syntax.xml @@ -32,6 +32,8 @@ <section> <title>Introduction</title> + <p>The complete specification for the bit syntax appears in the + <seealso marker="doc/reference_manual:expressions#bit_syntax">Reference Manual</seealso>.</p> <p>In Erlang, a Bin is used for constructing binaries and matching binary patterns. A Bin is written with the following syntax:</p> <code type="none"><![CDATA[ @@ -45,7 +47,7 @@ Bin = <<E1, E2, ... En>>]]></code> <<E1, E2, ... En>> = Bin ]]></code> <p>Here, <c>Bin</c> is bound and the elements are bound or unbound, as in any match.</p> - <p>Since Erlang R12B, a Bin does not need to consist of a whole number of bytes.</p> + <p>A Bin does not need to consist of a whole number of bytes.</p> <p>A <em>bitstring</em> is a sequence of zero or more bits, where the number of bits does not need to be divisible by 8. If the number @@ -165,8 +167,9 @@ end.]]></code> separated by hyphens.</p> <taglist> <tag>Type</tag> - <item>The type can be <c>integer</c>, <c>float</c>, or - <c>binary</c>.</item> + <item>The most commonly used types are <c>integer</c>, <c>float</c>, and <c>binary</c>. + See <seealso marker="doc/reference_manual:expressions#bit_syntax">Bit Syntax Expressions in the Reference Manual</seealso> for a complete description. +</item> <tag>Signedness</tag> <item>The signedness specification can be either <c>signed</c> or <c>unsigned</c>. Notice that signedness only matters for @@ -181,7 +184,7 @@ end.]]></code> <item>The unit size is given as <c>unit:IntegerLiteral</c>. The allowed range is 1-256. It is multiplied by the <c>Size</c> specifier to give the effective size of - the segment. Since Erlang R12B, the unit size specifies the alignment + the segment. The unit size specifies the alignment for binary segments without size.</item> </taglist> <p><em>Example:</em></p> @@ -319,21 +322,15 @@ foo(<<A:8,Rest/bitstring>>) ->]]></code> <section> <title>Appending to a Binary</title> - <p>Since Erlang R12B, the following function for creating a binary out of - a list of triples of integers is efficient:</p> + <p>Appending to a binary in an efficient way can be done as follows:</p> <code type="none"><![CDATA[ triples_to_bin(T) -> triples_to_bin(T, <<>>). triples_to_bin([{X,Y,Z} | T], Acc) -> - triples_to_bin(T, <<Acc/binary,X:32,Y:32,Z:32>>); % inefficient before R12B + triples_to_bin(T, <<Acc/binary,X:32,Y:32,Z:32>>); triples_to_bin([], Acc) -> Acc.]]></code> - <p>In previous releases, this function was highly inefficient, because - the binary constructed so far (<c>Acc</c>) was copied in each recursion step. - That is no longer the case. For more information, see - <seealso marker="doc/efficiency_guide:introduction"> - Efficiency Guide</seealso>.</p> </section> </chapter> |