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* sverker/async-auto-connect/OTP-14370: (37 commits)
Move new|abort_connection_id to erts_internal
Refactor erts_dsig_prepare argument dep(p)
Cleanup net_kernel
Improve connection aborting
Abort all pending connections if net_kernel terminates
erts: Put pending DistrEntry in separate list
Refactor auto_connect into an outline function
Remove unused ERTS_DSP_RWLOCK
fix erlang specs and preloaded
erts: Keep magic ref to DistEntry in net_kernel
Allow DistEntries in ETS
Remove faulty assert
erts: Transcode tuple fallbacks
erts: Ensure enc_term_int() always do progress
erl_interface: Add tuple fallback tests
erl_interface: Refactor ei_accept_SUITE
Add optimistic DFLAG_DIST_HOPEFULLY for pending connections
erts: Fix auto-connect toward erl_interface/jinterface
erts: Let send(_,_,[noconnect]) enqueue msg on pending connection.
Remove obsolete erlang:dgroup_leader
...
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Fix broken receive mark after an exception
OTP-14782
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to avoid tuple fallbacks for export funs and bitstrings.
ToDo: Re-encode if receiver turn out to be erl_interface/jinterface.
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Removed distribution_SUITE:applied_monitor_node
as it seems to test apply of trapping BIF
and monitor_node does not trap anymore.
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and remove ugly encoding fallback as {fun, ...}
DFLAGS_NEW_FUN_TAGS has been supported by vm/erl_interface/jinterface
since R13 or even older.
Renamed test case obsolete_funs to term2bin_tuple_fallbacks
and removed test for {fun,...} fallback
and added missing test for bitstring fallback {Binary, Bits}.
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for set/get_internal_state calls.
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to handle "lookup without refc++" correctly
which was introduced in 4dcb2ae7810a507b701a30072b2f514cab7ebbdb.
When decrementing refc to zero (in try_delete or prepare_try_delete)
we must always wait thread progress to make sure no thread has done
lookup without refc++ and is just about to do refc++ and thereby revive
the DistEntry. That is, we wait for a potential other thread to either
do refc++ or drop its pointer to the DistEntry.
And if that other thread does refc++ (in erts_ref_dist_entry)
it must also do the extra refc++ for the scheduled pending delete.
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Add 'used' option for binary_to_term/2
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When a ref is created before performing a receive that will only
receive message containing that ref, there is a compiler optimization
to avoid scanning messages that can't possible contain the newly
created ref.
Magnus Lång pointed out that the implementation of the optimization
is flawed. Exceptions or recursive calls could cause the receive
operation to scan the receive queue from a position beyond the expected
message (that is, the message containing the ref would never be
matched out). See the receive_opt_exception/1 and receive_opt_recursion/1
test cases in receive_SUITE.
It turns out that we can simplify the implementation of the
optimization while fixing the bug (suggested by Magnus Lång). We
actually don't need the c_p->msg.mark field. It is enough to have
c_p->msg.saved_pos; if it is non-zero, it is a valid position in the
message qeueue. All we need to do is to ensure that we clear
c_p->msg.saved_pos when a receive is exited normally or abnormally.
We can clear c_p->msg.saved_pos in JOIN_MESSAGE(), since it is called
both when leaving a receive because a message matched and because there
was a timeout and the 'after' clause was executed. In addition, we
need to clear c_p->msg.saved_pos when an exception is caught.
https://bugs.erlang.org/browse/ERL-511
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Symptom: random rpc net_adm:ping returned pang
Use monitor_node to wait for failed connection
before we try to connect again.
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for "+hmqd off_heap"
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* sverker/systask-reqid-bug:
erts: Fix bug in systask scheduling
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* sverker/systask-reqid-bug:
erts: Fix bug in systask scheduling
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when request id is an immediate.
Ex:
erlang:garbage_collect(P, [{async,Immediate}]).
may crash the VM.
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* lukas/erts/misc_fixes:
erts: Fix a bunch of compiler warnings
kernel: Fix gen_tcp_misc indentation
erts: Fail port_SUITE:huge_env if error code > 127
erts: Add lcnt prototype for dist locks update
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erlang:is_builtin(erlang, M, F) returns false for apply/2 and
yield/0. The documentation for erlang:is_builtin/3 says that it
returns true for BIFs that are implemented in C. apply/2 and
yield/0 are implemented in C (as BEAM instructions), and
therefore the correct return value is true.
Also see a similar argument that was made for apply/3 in the past:
http://erlang.org/pipermail/erlang-bugs/2015-October/005101.html
https://bugs.erlang.org/browse/ERL-500
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This can happen for instance if erl_child_setup segfaults
before it can do the execv.
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* bjorn/erts/cuddle-with-tests:
Eliminate use of deprecated functions in string
Eliminate warnings for ignoring the result of an expression
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Remove try-catch which must be for some old bitstring limitation.
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Explicitly disable HiPE's range analysis
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* lukas/erts/use_SIGRTMIN_for_sys_suspend/OTP-14682:
erts: Use SIGRTMIN on linux for sys_suspend
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The Linux real-time signal is better used on Linux
for suspending schedulers during shutdown as it doesn't
collide with SIGUSR2 usage of other applications.
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Conflicts:
erts/emulator/beam/beam_bp.c
erts/emulator/beam/erl_process.c
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* lukas/erts/tracing/recv_exit_signal_deadlock/OTP-14678:
erts: Fix lock order when recv tracing trapped exit signal
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* lukas/erts/fix_caller_trace_for_apply_bifs/OTP-14677:
erts: Fix caller trace for apply bifs
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when/if compiling this file to native code to check its exception
behaiour. Related to the discussion in #1586.
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* sverker/bad-dist-msg-bug/ERIERL-80/OTP-14661:
erts: Fix bug when detecting bad dist message
Add distribution_SUITE:bad_dist_ext_size
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Bifs that are called through the export entry
using i_call_last could have their cp set to
return_trace, just like any other call. So we
have to unwind the trace stack to get the correct
cp. Not doing this creates a lot of issues for
fprof.
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* bjorn/erts/improve-beam-ops:
Move out variables from the head of combined instructions
Change operand from 'P' to 'Q' for i_apply_last and i_apply_fun_last
Add CHECK_ALIGNED() for testing storage destinations
instrs.tab: Add missing -no_next directives
beam_load.c: Generalize the 'P' operator in the packing engine
Break out most of the initialization from process_main()
Eliminate the OpCode() macro
Eliminate unnecessary and inconsistent casts
Refactor macros for accessing Beam instructions
beam_emu: Make order of macros consistent
beam_SUITE: Strengthen test of packed registers
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Point out the correct line number in stack traces
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* lukas/erts/poll-thread/OTP-14346: (25 commits)
erts: Trigger ready events when erts_io_control fails
erts: enif_select steal test
kernel: Rewrite gen_udp_SUITE:read_packet tc
erts: disable kernel-poll on OS X vsn < 16
erts: Fix msacc testcase with new poll-thread
erts: Add testcases to test IOp and IOt options
erts: get_internal_state(check_io_debug) now prints to error_logger
erts: Remove eager check io
erts: Move all I/O polling to a seperate thread
erts: Fix smp_select testcase to use ERL_DRV_USE
erts: Fix msacc unmanaged state counter
erts: Optimize port_task quick allocator
erts: Add ERTS_THR_PREF_QUICK_ALLOC_IMPL
erts: Update suspend of scheduler to handle multiple pollsets
erts: Add multiple poll sets
erts: Some code cleanup for gdb to work better
erts: temp_alloc can no longer be disabled
erts: Refactor check_io to use one static struct
erts: Replace check_io spinlock with lock-less list insertion
erts: Add number of enif_select's to check_io_debug
...
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This is needed with the new poll-thread implementation
as now closed fd's in the pollset will be triggered much
faster than before.
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Test more instructions and use register numbers >= 512.
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Sometimes the line number in a stack trace could be wrong,
for example for this code:
t() ->
Res = id(x), %<== Wrong line number.
Res + 1.
id(I) -> I.
The line number pointed out in the stack trace would be the
line before the line where the exception occurred.
The reason is the way the increment instruction instruction
is implemented:
OpCase(i_increment_rWtd):
{
increment_reg_val = r(0);
}
I -= 1;
goto increment__execute;
OpCase(i_increment_xWtd):
{
increment_reg_val = xb(I[1]);
}
goto increment__execute;
increment__execute:
/* Common code for increment */
.
.
.
(The implementation in OTP 20 is similar, but hand-coded directly
in beam_emu.c instead of generated.)
The instruction i_increment_rWtd decrements the instruction pointer (I)
before jumping to the common code. That means that I points *before*
the 'increment' instruction. If there is a 'line' instruction directly
before the 'increment' instruction (as there is in this example), the
instruction pointer will point before that line. Thus the previous line
will be picked up instead.
To eliminate this bug, we must never decrement the instruction pointer.
Instead, we can increment the other (longer) instructions in the
same group of combined instructions:
OpCase(i_increment_rWtd):
{
increment_reg_val = r(0);
}
goto increment__execute;
OpCase(i_increment_xWtd):
{
increment_reg_val = xb(I[1]);
}
I += 1;
goto increment__execute;
increment__execute:
/* Common code for increment */
.
.
.
Also fix a bug that was only a potential bug when ddaed7774eb0a
introduced relative jumps, but is now a real bug. See the added
comment for SET_I_REL() in macros.tab.
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* kvakvs/zero-size-read_file/ERL-327/PR-1524/OTP-14637:
erts: On zero-size files attempt to read until EOF
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