Age | Commit message (Collapse) | Author |
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The switch "+Musac <boolean>" controls if sys_alloc carriers
are allowed.
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Using "+Mlpm all" switch all mappings made by the emulator will
be locked into physical memory.
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* egil/fix-crashdump-pointer-crash/OTP-11420:
erts: Fix segfaulting crashdump writing
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Crashdumps initiated by out-of-memory on spawn could cause the beam
to segfault during crashdump writing due to invalid pointers.
The pointers are invalid since the process creation never finished.
This commit remedies this problem by removing the process from
crashdump printout.
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* rickard-sverker/supercarrier/OTP-11149: (29 commits)
erts: Add test case for erts_mmap
erts: Add mutex to init_atoms in erts_mmap.c
erts: Fix lock violation for init_atoms in erl_mmap.c
erts: Fix misc minor bugs in supercarrier initialization
erts: Add erts_mmap stats
erts: Add erts_bld_tupleX macros
erts: Rename erts_bld_atom_uint_2tup_list to *_uword_*
erts: Fix bug in lookup_free_seg
erts: Fix race bug in erts_munmap
erts: Add HARD_DBG_MSEG
erts: Refactor rbt_insert in erl_mmap
erts: erts_mmap improved free seg desc management
erts: Add documentation for +MMsc* system flags
erts: Allow page aligned erts_munmap()
erts: Sort tree in super aligned sizes (SA_SZ_ADDR_ORDER)
erts: Fix ASSERT bug and void* arithmetics
erts: Add mmap argument to erts_debug:get_internal_state
erts: Improve erts_mmap out of free descriptor management
erts: Cleanup erl_mmap
erts: Add __func__ to ERTS_ASSERT macro
...
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* fenollp/treewide_remove_unexpected_0xff/OTP-11323:
Remove ^L characters hidden randomly in the code. Not those used in text files as delimiters.
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Fix bsr bug occurring when shifting a huge number a huge number of
bits to the right. The bug can occur if Sint is 64 bits and int is 32
bits, causing a truncation in the big.c:I_lshift function.
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As part of erlang:system_info({allocator,mseg_alloc})
and erl_crash.dump
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for compile time argument checking
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and change from Uint to UWord values
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* Coalescing and trimming of free segments in supercarrier
* Management of super aligned and super unaligned areas in
supercarrier
* Management of reservation of physical memory
* erts_mseg usage of erts_mmap
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Introduce unconditional ERTS_ASSERT
and use that for both ASSERT and ASSERT_EXPR.
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Conflicts:
erts/vsn.mk
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* msassak/empty-pattern-badarg/OTP-11350:
stdlib: extended binary_module_SUITE to assure badarg for OTP-11350
Check all pattern arguments passed to binary:matches/2
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rickard/aligned-sys_alloc-carriers_maint/OTP-11318
Conflicts:
erts/emulator/beam/erl_alloc.c
erts/emulator/beam/erl_alloc_util.c
erts/emulator/beam/erl_alloc_util.h
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erts_sys_aligned_alloc() is currently implemented using posix_memalign if
it exist, or using _aligned_malloc on Windows.
If erts_sys_aligned_alloc() exist allocators will create sys_alloc
carriers similar to how this was done pre-R16.
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Add system_info(ets_limit) to provide a way to retrieve the runtime's
maximum number of ETS tables. Add tests and documentation for it too.
Also repair the alphabetical order of system_info/1 argument descriptions
in the documentation and in the erlang.erl clauses. Add new preloaded
erlang.erl due to that change. Also ensure all system_info/1 clauses are
represented in the erlang.xml source documentation -- a couple had been
inadvertently dropped in previous commits when other clauses were added.
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Including an empty binary as one of multiple patterns passed to
binary:matches/2 would crash BEAM with: "Cannot reallocate
1342177280 bytes of memory (of type "tmp")". This ensures each pattern
is valid before trying to match.
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files as delimiters.
While working on a tool that processes Erlang code and testing it against this repo,
I found out about those little sneaky 0xff. I thought it may be of help to other
people build such tools to remove non-conforming-to-standard characters.
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Clear the "enabled" flag for scheduling statistics when disable is
specified.
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* egil/erl_driver-thread-info/OTP-11303:
erts: Document erl_driver interface lock names
erts: Extend erl_driver interface with lock names
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* sv-sched-percentage-option:
Silence gcc warnings in non-smp build
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* lukas/erts/clean_port_msg_dispatcher/OTP-11290:
erts: Fix segfault when scheduling release_port later_op
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For applications where measurements show enhanced performance from the use
of a non-default number of emulator scheduler threads, having to accurately
set the right number of scheduler threads across multiple hosts each with
different numbers of logical processors is difficult because the erl +S
option requires absolute numbers of scheduler threads and scheduler threads
online to be specified.
To address this issue, add a +SP option to erl, similar to the existing +S
option but allowing the number of scheduler threads and scheduler threads
online to be set as percentages of logical processors configured and
logical processors available, respectively. For example, "+SP 50:25" sets
the number of scheduler threads to 50% of the logical processors
configured, and the number of scheduler threads online to 25% of the
logical processors available. The +SP option also interacts with any
settings specified with the +S option, such that the combination of options
"+S 4:4 +SP 50:50" (in either order) results in 2 scheduler threads and 2
scheduler threads online.
Add documentation for the +SP option.
Add tests for the +SP option to scheduler_SUITE.
Add tests and documentation for two existing features of the +S option: +S
0:0 resets the scheduler thread count and scheduler threads online count to
their defaults, and specifying negative numbers for +S results in those
values being subtracted from the default values for the host.
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begin_port_cleanup can be called from a non-scheduler thread, this
means that there is no esdp available and thus erts_schedule_thr_prgr_later_op
segfaults.
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The actual port id is used to create a key from the
pointer value which is the ErlDrvPort. To do this
a new driver api function driver_async_port_key is
added and the driver API minor version is updated.
The documentation is updated and the faulty description of
how to spread ports over async threads is updated to
use the new API.
Testcase also added.
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* lukas/erts/match_spec_test_silent/OTP-11232:
erts: Do not enable TRACE_SILENT when testing a ms
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* sverk/ptab-race:
erts: Fix race in ptab that can cause PID mix-ups
OTP-11225
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Since: R16B01
Symptom: A spawned process may get the same PID as an existing
process. The new process will "steal" the PID and make the old process
unreachable through the PID.
The problem also applies to port identities but has only been seen
for processes.
Conditions: SMP emulator with at least two scheduler threads. Rapid
spawning and termination of a large number of processes. A small
number of free slots in the process table will also increase the risk
for this bug.
Workaround: Use command line options "+P legacy" and "+Q legacy"
Cause: The race happens if a process terminates and gets stalled while
releasing its process table slot. The stall has to be so long (due to OS
preemptive scheduling most probably) for other schedluer threads to
consume all other free slots for newly spawn processes.
Fix: Write invalid-markers in the free-pid-table and do atomic exhange
operations in retry-loops to make sure each thread gets a unique PID.
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Bug reported by Jose Valim on the erlang-bugs mailing list:
erlang:halt(0,[]) does not flush as advertised in the documentation.
Should be the same as erlang:halt(0,[{flush,true}]), but is in fact
the same as erlang:halt(0,[{flush,false}]).
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Lock and thread names are already a feature in the driver interface.
This extension will let developers read these names. Eases debugging.
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* egil/erts/aggregate-system-traceability/OTP-11196:
Check for native code without loading module
Fix erlang:system_info(compile_info)
Fix system_information get_beam_name/0
Add beam dynamic libraries to system_information
Add system_information testsuite
Add system information aggregate
Refactor away ?line macro in code_SUITE
Fix tests for erts app-file
Add erts app-file
erts: Add cflags, ldflags and config.h into executable
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Allocation needs to be in correct order.
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* rickard/warning_fixes:
Fix variable ‘rp_had_locks’ set but not used warning
Fix ‘ethr_native_rwlock_destroy’ defined but not used warning
Fix 'no previous prototype' warning for dtrace functions
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* jw/fix-float-middle-endian/OTP-11201:
Fix binary construction on floating point middle-endian machines
Fix binary matching on floating point middle-endian machines
Fix erlang:phash2() on floating point middle-endian machines
Fix external term format BIFs on floating point middle-endian machines
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* rickard/info/OTP-11196:
Add test cases for native atomics and jump table
Refuse to build SMP runtime by default without native atomics
Make information about use of jump table available via system_info BIF
Make ethread library information available via system_info BIF
Make emulator arguments available via the system_info BIF
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erlang:system_info(beam_jump_table)
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erlang:system_info(ethread_info)
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