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2010-06-04Merge branch 'egil/call-time-trace-patterns' into devErlang/OTP
* egil/call-time-trace-patterns: Fix ops.tab to include i_return_time_trace Let trace_call_time_SUITE scheduling test be more relaxed Add documentation for call time breakpoints Fix bp_hash_put to do hash value after rehash Extend trace_call_time_SUITE with bif-tests Fix assertion in trace_pattern for bifs Teach erlang:system_info/1 to list snifs Add bif tests to call time trace tests Teach call time trace patterns to include bifs Fix BeamInstr code array in export.h Add trace call_time tests for nifs and bifs Teach call count tracing to use atomics Add first phase of trace call time test suite Add a scheduler array for BpData at BeamInstr[-4] Add search keys in breakpoints and a searchfunction Fix BeamInstr for call_time Teach call_time trace to use intruction pointers Add return_time trace and PSD deletions Remove trailing character in beam_bif_load Fix set_function_break to use correct breakpoint ... OTP-8677 egil/call-time-trace-patterns
2010-06-04Fix scheduler_suspend test when schedulers online isn't equal to the amount ↵Rickard Green
of schedulers
2010-06-03Fix ops.tab to include i_return_time_traceBjörn-Egil Dahlberg
Without the instruction defined in ops the interpreter will not compile when using NO_JUMPTABLE.
2010-06-03Let trace_call_time_SUITE scheduling test be more relaxedBjörn-Egil Dahlberg
2010-06-03Fix bp_hash_put to do hash value after rehashBjörn-Egil Dahlberg
If a rehash was done the old hash value was used. This was incorrect.
2010-06-03Extend trace_call_time_SUITE with bif-testsBjörn-Egil Dahlberg
2010-06-03Fix assertion in trace_pattern for bifsBjörn-Egil Dahlberg
2010-06-03Teach erlang:system_info/1 to list snifsBjörn-Egil Dahlberg
erlang:system_info(snifs) lists all static native implemented functions. The function presents the lists with three tuple values containing MFAs [{Module, Function, Arity}, ...].
2010-06-03Add bif tests to call time trace testsBjörn-Egil Dahlberg
2010-06-03Teach call time trace patterns to include bifsBjörn-Egil Dahlberg
2010-06-03Fix BeamInstr code array in export.hBjörn-Egil Dahlberg
2010-06-03Add trace call_time tests for nifs and bifsBjörn-Egil Dahlberg
2010-06-03Teach call count tracing to use atomicsBjörn-Egil Dahlberg
Call count previously used a global lock for accessing and writing its counter in the breakpoint. This is now changed to atomics instead. The change will let call count tracing and cprof to scale better when increasing the number of schedulers.
2010-06-03Add first phase of trace call time test suiteBjörn-Egil Dahlberg
2010-06-03Add a scheduler array for BpData at BeamInstr[-4]Björn-Egil Dahlberg
To solve the issue of multiple schedulers constantly updating the head pointer to the bp data wheel, each scheduler now has its own entrypoint to the wheel. This head pointer can be updated without a locking being taken. Previously there were no lock ...
2010-06-03Add search keys in breakpoints and a searchfunctionBjörn-Egil Dahlberg
2010-06-03Fix BeamInstr for call_timeBjörn-Egil Dahlberg
2010-06-03Teach call_time trace to use intruction pointersBjörn-Egil Dahlberg
call_time trace will use instruction pointers instead of breakpoint data pointers. More costly lookup but the bdt structure might be deallocated, we do not want that. Remove unnecessary pattern lock.
2010-06-03Add return_time trace and PSD deletionsBjörn-Egil Dahlberg
2010-06-03Remove trailing character in beam_bif_loadBjörn-Egil Dahlberg
2010-06-03Fix set_function_break to use correct breakpointBjörn-Egil Dahlberg
op_i_time_breakpoint is now used
2010-06-03Add processes hashes for call time breakpointsBjörn-Egil Dahlberg
Call time breakpoint tracing traces per call trace per process. - Add hashes to support the extra dimension. - Teach trace_info/2 to handle the extra information dimension.
2010-06-03Fix lock-checking for PSD call_time breakpointsBjörn-Egil Dahlberg
2010-06-03Call time breakpoint tracing frameworkBjörn-Egil Dahlberg
Initial commit with a new breakpoint instruction and PSD areas for temporary time storage during tracing.
2010-06-03OTP-8675 Fix erroneous return value from erlang:system_info(multi_scheduling)Rickard Green
erlang:system_info(multi_scheduling) sometimes erroneously returned enabled when it should have returned blocked.
2010-06-03OTP-8673 Adjust alignment of scheduler data and run queuesRickard Green
Alignment of scheduler data and run queues were adjusted.
2010-06-03OTP-8666 Enable automatic binding of schedulers when possibleRickard Green
The runtime system will by default bind schedulers to logical processors using the default_bind bind type if the amount of schedulers are at least equal to the amount of logical processors configured, binding of schedulers is supported, and a CPU topology is available at startup. NOTE: If the Erlang runtime system is the only operating system process that binds threads to logical processors, this improves the performance of the runtime system. However, if other operating system processes (as for example another Erlang runtime system) also bind threads to logical processors, there might be a performance penalty instead. If this is the case you, are are advised to unbind the schedulers using the <seealso marker="erl#+sbt">+sbtu</seealso> command line argument, or by invoking <seealso marker="erlang#system_flag_scheduler_bind_type">erlang:system_flag(schedule r_bind_type, unbound)</seealso>.
2010-06-03OTP-8555 Send message from NIFSverker Eriksson
New NIF features: Send messages from a NIF, or from thread created by NIF, to any local process (enif_send) Store terms between NIF calls (enif_alloc_env, enif_make_copy) Create binary terms with user defined memory management (enif_make_resource_binary)
2010-06-03Merge branch 'pan/otp_8579_autoimport_override' into devErlang/OTP
* origin/pan/otp_8579_autoimport_override: Update preloaded modules Update primary bootstrap Remove outcommented code from erl_lint Make port_command/3 auto-imported Remove (harmless) warnings about min/max in core applications Autoimport min/2 and max/2 Improve coverage of erl_int in testcases Change warning to error for nowarn_bif_clash compiler directive Add -compile({no_auto_import,[F/A]}) doc to compiler.xml Add some testcases to compiler to verify that overriding really happens Return nowarn_bif_clash functionality but with warning Teach erl_lint to better override BIFs with local functions and imports Teach compiler to override autoimport with import First prototype for local functions overriding autoimported OTP-8579 Local functions should override auto-imported Local and imported functions now override the autoimported BIFs when the names clash. The pre R14 behaviour was that autoimported BIFs would override local functions. To avoid that old programs change behaviour, the following will generate an error: Doing a call without explicit module name to a local function having a name clashing with the name of an autoimported BIF that was present (and autoimported) before OTP R14A Explicitly importing a function having a name clashing with the name of an autoimported BIF that was present (and autoimported) before OTP R14A Using any form of the old compiler directive nowarn_bif_clash If the BIF was added or autoimported in OTP R14A or later, overriding it with an import or a local function will only result in a warning, To resolve clashes, you can either use the explicit module name erlang to call the BIF, or you can remove the autoimport of that specific BIF by using the new compiler directive -compile({no_auto_import,[F/A]})., which makes all calls to the local or imported function without explicit module name pass without warnings or errors. The change makes it possible to add autoimported BIFs without breaking or silently changing old code in the future. However some current code ingeniously utilizing the old behaviour or the nowarn_bif_clash compiler directive, might need changing to be accepted by the compiler.
2010-06-03Merge branch 'pan/unregister_error' into devErlang/OTP
* pan/unregister_error: Add possibly missing process lock before unregistering oneself Keep process lock over trace of unregister OTP-8663 Unregister may crash VM Extreme combinations of register/unregister in a highly parallell SMP application could crash the VM. The error is corrected.
2010-06-02Make port_command/3 auto-importedPatrik Nyblom
2010-06-02Autoimport min/2 and max/2Patrik Nyblom
2010-06-02Merge branch 'jv/autoimport-binary_to_term_2' into devErlang/OTP
* jv/autoimport-binary_to_term_2: Change binary_to_term/2 to be auto-imported OTP-8671 jv/autoimport-binary_to_term_2 Now, binary_to_term/2 is auto-imported. This will cause a compile warning if and only if a module has got a local function with that name.
2010-06-02Windows: Open files with FILE_SHARE_DELETE to get closer to UNIX semanticsJan Lehnardt
See dwShareMode on http://msdn.microsoft.com/en-us/library/aa363858(VS.85).aspx
2010-06-01OTP-8612 Fix potential premature destruction of port locksRickard Green
Port locks could be prematurely destroyed.
2010-06-01OTP-8658 Add missing memory barriers in erts_poll()Rickard Green
Missing memory barriers in erts_poll() could cause the runtime system to hang indefinitely.
2010-06-01Remove unsupported erlang:blocking_read_file/1Björn Gustavsson
This BIF was only used by the now broken SAE support.
2010-06-01Remove stray SAE supportBjörn Gustavsson
The experimental Standalone Erlang (SAE) support based on Joe Armstrong's work has long been broken. Remove the remaining code and Makefile rules.
2010-06-01Add possibly missing process lock before unregistering oneselfPatrik Nyblom
2010-06-01Keep process lock over trace of unregisterPatrik Nyblom
2010-05-28Merge branch 'sv/socket-error-portability' into devErlang/OTP
* sv/socket-error-portability: inet_drv.c: Remove red herring use macro to portably test for socket system call errors OTP-8654 sv/socket-error-portability On some combination of Montavista Linux on Cavium Octeon processors, some socket-related system calls returned other numbers than -1 for errors. This caused a core dump in inet_drv.c. Now the code works around this problem.
2010-05-27Merge branch 'se/spawn_drv_win_deadlock' into devErlang/OTP
* se/spawn_drv_win_deadlock: Fix deadlock in spawn driver on windows OTP-8641 se/spawn_drv_win_deadlock Windows: Closing port of program that stalled without reading all data could deadlock scheduler thread.
2010-05-27Merge branch 'ta/extend-nif-api' into devErlang/OTP
* ta/extend-nif-api: erl_nif: add make_atom_len, make_existing_atom_len and make_string_len erl_nif: add enif_get_atom_length and enif_get_list_length erl_nif: add enif_is_list and enif_is_tuple OTP-8640 ta/extend-nif-api New NIF API functions: enif_make_atom_len, enif_make_existing_atom_len, enif_make_string_len, enif_get_atom_length, enif_get_list_length, enif_is_list, enif_is_tuple (by Tuncer Ayaz)
2010-05-27inet_drv.c: Remove red herringBjörn Gustavsson
Remove redundant "!defined(__WIN32__)". It is used inside the #else branch of a "#ifdef __WIN32__", so it serves no useful purpose except to fool unsuspecting readers.
2010-05-27use macro to portably test for socket system call errorsSteve Vinoski
On some combinations of Montavista Linux running on Cavium Octeon chips, some socket-related system calls erroneously return negative numbers other than -1 to indicate errors, but inet_drv.c specifically compares against -1 to test for errors. The result is that beam dumps core due to the code treating these negative numbers as success indicators, as counts/offsets of bytes written, etc. thereby corrupting its own internal data structures. To fix this, introduce a portability macro to test the result of socket system calls. The test remains unchanged on Windows but for other platforms the macro considers all return values that are less than zero to be errors. Though POSIX specifies that errors from these system calls are indicated by a return value of -1, treating all negative return values as errors is also safe, as described in detail below. In networking programming, treating all negative return values from system calls as errors is very common practice -- see the examples in W. Richard Stevens's popular and highly lauded network programming books, for example. For system calls that return 0 to indicate success, treating all negative numbers as errors is safe because only 0 is specified to indicate success. These include: getsockname getpeername getsockopt gethostname bind listen connect close shutdown Likewise, for system calls that return non-negative numbers to indicate success, treating all negative numbers as errors is also safe. These functions typically return signed integers of type ssize_t, and they treat any parameters of type size_t that cannot fit within the ssize_t return value, such as numbers of bytes to read or write, as errors (specifically EINVAL). For example, in the "ERRORS" section of the man page for writev from several varieties of Linux, it states that EINVAL is returned when the total length of the I/O is more than can be expressed by the ssize_t return value. These calls include: recv recvfrom recvmsg writev send sendto sendmsg Finaly, the socket() system call is also similar to these in that it returns a signed type (int) with all non-negative return values indicating success, so treating all negative return values as errors is safe.
2010-05-24Merge branch 'fm/file-operations' into devErlang/OTP
* fm/file-operations: Update preloaded modules Add file:advise/4 - a wrapper to the POSIX syscall posix_fadvise Add file:datasync/1 for syncing file contents only sys.h: Correct the get_int64() macro OTP-8637 fm/file-operations The functions file:advise/4 and file:datasync/1 have been added. (Thanks to Filipe David Manana.)
2010-05-24Fix deadlock in spawn driver on windowsSverker Eriksson
A misbehaving port program that does not read all data written to the port may deadlock the scheduler thread when it calls port_close. The chosen solution was to use the new function CancelIoEx if it exist (Vista) otherwise let the spawn driver wait for a short while (10ms) and then to spawn a thread that will wait for the port program to exit.
2010-05-24erl_nif: add make_atom_len, make_existing_atom_len and make_string_lenTuncer Ayaz
Add new NIF API functions - enif_make_atom_len - enif_make_existing_atom_len - enif_make_string_len These are basically the same as enif_make_atom, enif_make_existing_atom and enif_make_string except that the new functions require a length parameter instead of a null-terminated C-string. Signed-off-by: Tuncer Ayaz <[email protected]>
2010-05-24erl_nif: add enif_get_atom_length and enif_get_list_lengthTuncer Ayaz
Add new NIF API functions - enif_get_atom_length - enif_get_list_length Signed-off-by: Tuncer Ayaz <[email protected]>
2010-05-24erl_nif: add enif_is_list and enif_is_tupleTuncer Ayaz
Add new NIF API functions - enif_is_list - enif_is_tuple Signed-off-by: Tuncer Ayaz <[email protected]>