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2015-03-12Merge branch 'mikpe/avoid-oversize-bignums' into maintHenrik Nord
* mikpe/avoid-oversize-bignums: don't leave a heap hole in erts_bs_get_integer_2 don't create oversize bignums in binary matching OTP-12556
2015-03-06Merge branch 'leoliu/master' into maintZandra Hird
* leoliu/master: Two minor fixes OTP-12545
2015-02-27Two minor fixesLeo Liu
* Fix documentation on $char for unicode * Remove duplicate declaration for erts_encode_ext_dist_header_size
2015-02-20erts: Fix erroneous printout in crashdumpBjörn-Egil Dahlberg
An extra '}' were printed in remote links.
2015-02-14don't leave a heap hole in erts_bs_get_integer_2Mikael Pettersson
Reset p->htop in the oversize bignum error case to avoid leaving a hole in the heap, which would crash the debug emulator.
2015-02-04don't create oversize bignums in binary matchingMikael Pettersson
Bignums are artifically restricted in size. Arithmetic and logical operations check the sizes of resulting bignums, and turn oversize results into system_limit exceptions. However, this check is not performed when bignums are constructed by binary matching. The consequence is that such matchings can construct oversize bignums that satisfy is_integer/1 yet don't work. Performing arithmetic such as Term - 0 fails with a system_limit exception. Worse, performing a logical operation such as Term band Term results in []. The latter occurs because the size checking (e.g. in erts_band()) is a simple ASSERT(is_not_nil(...)) on the result of the bignum operation, which internally is [] (NIL) in the case of oversize results. However, ASSERT is a no-op in release builds, so the error goes unnoticed and [] is returned as the result of the band/2. This patch addresses this by preventing oversize bignums from entering the VM via binary matching: - the internal bytes_to_big() procedure is augmented to return NIL for oversize results, just like big_norm() - callers of bytes_to_big() are augmented to check for NIL returns and signal errors in those cases - erts_bs_get_integer_2() can only fail with badmatch, so that is the Erlang-level result of oversize bignums from binary matches - big_SUITE.erl is extended with a test case that fails without this fix (no error signalled) and passes with it (badmatch occurs) Credit goes to Nico Kruber for the initial bug report.
2015-02-03Merge branch 'maint-17' into maintZandra Hird
2015-01-23erts: Check driver version before assigning callbackBjörn-Egil Dahlberg
2015-01-23erts: Don't lookup invalid port for crashdump handlingBjörn-Egil Dahlberg
2015-01-23erts: Use emergency close to close epmdBjörn-Egil Dahlberg
Closes all open socket before writing crashdump to file.
2015-01-13erts: Extend driver interface with emergency_closeBjörn-Egil Dahlberg
The intention of this callback is to close all sockets associated to a port. It is closed only on crashdumps. This will currently only be used for the epmd port.
2014-12-10Use the new 64-bit atomic ops APIRickard Green
2014-12-10Introduce a 64-bit atomic ops APIRickard Green
The 64-bit atomic ops API is implemented by * native word size atomic ops on 64-bit architectures, and * native double word size atomic ops on 32-bit architectures when available. When native double word size atomic is not available, the fallback using modification counters is used.
2014-11-26Merge branch 'sverk/port_get_data-race/OTP-12208' into maintSverker Eriksson
* sverk/port_get_data-race/OTP-12208: erts: Fix port data memory allocation bug
2014-11-25Merge branch 'rickard/maint-17/activate-runq/OTP-12287' into maintRickard Green
* rickard/maint-17/activate-runq/OTP-12287: Do not let non-empty run-queue prevent activation of scheduler
2014-11-25Merge branch 'sverk/cpool-search-improvement' into maintSverker Eriksson
OTP-12323 * sverk/cpool-search-improvement: erts: Add internal docs for super carrier and new cpool search. erts: Fix bug causing mbc to be deleted from cpool before it was inserted erts: Fix bug causing mbc removed from cpool to be used at pool entrance erts: Add pooled_list and traitor_list
2014-11-25erts: Fix port data memory allocation bugSverker Eriksson
for non-immediate port data >= sizeof(Eterm)*2 words.
2014-11-10Merge branch 'vinoski/dirty-nif-return-gc' into maintBruce Yinhe
OTP-12300 * vinoski/dirty-nif-return-gc: Fix gc-related problem with dirty NIFs
2014-11-07Merge branch 'lemenkov/expose_nif_version' into maintBruce Yinhe
OTP-12298 * lemenkov/expose_nif_version: Expose NIF version
2014-11-06Merge branch 'vinoski/fix-smp-disable-with-ds/OTP-12295' into maintMarcus Arendt
* vinoski/fix-smp-disable-with-ds/OTP-12295: Fix "-smp disable" for emulator with dirty schedulers
2014-11-05Merge branch 'lukas/erts/fix_undefined_behaviour/OTP-12290' into maintLukas Larsson
* lukas/erts/fix_undefined_behaviour/OTP-12290: erts: Fix ub in list_to_integer and bignum div
2014-11-04Merge branch 'rickard/activate-runq/OTP-12287' into ↵Rickard Green
rickard/maint-17/activate-runq/OTP-12287 * rickard/activate-runq/OTP-12287: Do not let non-empty run-queue prevent activation of scheduler Conflicts: erts/emulator/beam/erl_process.c
2014-11-04Do not let non-empty run-queue prevent activation of schedulerRickard Green
Conflicts: erts/emulator/beam/erl_process.c
2014-11-04Fix gc-related problem with dirty NIFsSteve Vinoski
Ensure that the return value from a dirty NIF call is made part of the GC rootset. Add a new regression test to nif_SUITE. Thanks to Daniel Goertzen for reporting the error and providing a test case, and to Sverker Eriksson for making test case reproducible and finding the fix.
2014-11-03Merge branch 'sverk/beam-ranges-bug/OTP-12273' into maintSverker Eriksson
* sverk/beam-ranges-bug/OTP-12273: erts: Fix bug in beam_ranges
2014-11-02Expose NIF versionPeter Lemenkov
This patch allows checking for NIF API version in a way similar to driver version. E.g. by calling erlang:system_info(nif_version). Signed-off-by: Peter Lemenkov <[email protected]>
2014-10-29erts: Fix bug in beam_rangesSverker Eriksson
Symptom: VM on OSX (darwin11.4.2) with +Meamin running sasl tests, crashing when init:reboot() does erlang:purge_module(installer). Problem: Off-by-one bug in beam_ranges:find_range, returning the wrong range if the 'end' of one module is the 'start' of the next. This is only possible if using sys_alloc (+Meamin) as our own allocators always put block headers between allocated payload data.
2014-10-28Merge branch 'sverk/cpool_fetch-dc_list-bug/OTP-12249' into maintSverker Eriksson
* sverk/cpool_fetch-dc_list-bug/OTP-12249: erts: Fix bug when delayed deallocated carrier is reused by cpool_fetch
2014-10-28Merge branch 'sv/isfinite/OTP-12268' into maintLukas Larsson
* sv/isfinite/OTP-12268: Use isfinite() instead of finite() when available
2014-10-28Use isfinite() instead of finite() when availableAnthony Ramine
OS X Mavericks builds result in a number of warnings about finite() being deprecated, like these: beam/erl_arith.c:451:7: warning: 'finite' is deprecated: first deprecated in OS X 10.9 [-Wdeprecated-declarations] ERTS_FP_ERROR(p, f1.fd, goto badarith); ^ sys/unix/erl_unix_sys.h:319:33: note: expanded from macro 'ERTS_FP_ERROR' ^ sys/unix/erl_unix_sys.h:244:51: note: expanded from macro '__ERTS_FP_ERROR' ^ /usr/include/math.h:718:12: note: 'finite' has been explicitly marked deprecated here extern int finite(double) __OSX_AVAILABLE_BUT_DEPRECATED(__MAC_10_0, __MAC_10_9, __IPHONE_NA, __IPHONE_NA); Add checks to use isfinite() instead of finite() where available. Verified on OS X Mavericks 10.9.5 and Ubuntu 12.04.
2014-10-28Merge branch 'vinoski/erl-nif-init' into maintBruce Yinhe
OTP-12266 * vinoski/erl-nif-init: Fix missing field initializer in ERL_NIF_INIT macro
2014-10-26Fix "-smp disable" for emulator with dirty schedulersSteve Vinoski
Running "erl -smp disable" on an emulator built with dirty scheduler support caused problems such as segmentation violations and emulator status line outputs containing garbage. For example: $ erl -smp disable Segmentation fault (core dumped) and: $ erl -smp disable Erlang/OTP 17 [DEVELOPMENT] [erts-6.2] [source] [64-bit] [ds:10:4297895689:4299948152] [async-threads:280] This problem also caused the emulator smoke_test_SUITE to hit these same problems if run in an emulator started with the "-smp disable" option. Fix this segmentation violation by ensuring that dirty scheduler information is printed in the status line only when the emulator is compiled with ERTS_SMP enabled. With this fix in place, the smoke_test_SUITE now passes when the "-smp disable" option is used, and the emulator status line prints correctly for both "-smp enable" and "-smp disable": $ erl -smp enable Erlang/OTP 17 [DEVELOPMENT] [erts-6.2] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:10] [kernel-poll:false] and: $ erl -smp disable Erlang/OTP 17 [DEVELOPMENT] [erts-6.2] [source] [64-bit] [async-threads:10] [kernel-poll:false]
2014-10-23Merge branch 'rickard/maint-17/eager-check-io/OTP-12117' into maintRickard Green
* rickard/maint-17/eager-check-io/OTP-12117: No eager check I/O on OSE Introduce support for eager check I/O scheduling
2014-10-20erts: Fix bug causing mbc to be deleted from cpool before it was insertedSverker Eriksson
Set IN_POOL flag _after_ mbc has been actually inserted. Earlier it did not matter if IN_POOL was set early as it was not possible to find a carrier before is was fully inserted. Now when searching pooled_list and traitor_list we must make sure a found carrier has been fully inserted into cpool before removing it.
2014-10-06erts: Fix bug causing mbc removed from cpool to be used at pool entranceSverker Eriksson
Clear both IN_POOL and BUSY flags when empty carrier is removed is removed from pool to be destroyed. Earlier it was enough to leave BUSY flag set but now with pooled_list we must clear IN_POOL to avoid using it as cpool_entrance in cpool_fetch().
2014-10-03erts: Add pooled_list and traitor_listSverker Eriksson
2014-10-03erts: Fix bug when delayed deallocated carrier is reused by cpool_fetchSverker Eriksson
The delayed dealloc queue destroyes one word but cpool_fetch() is expected to return healthy carriers. So we restore that overwritten word with a little bit of hackish code.
2014-10-02erts: Mend port_set_data with non-immed data for halfword VMSverker Eriksson
2014-10-02Fix missing field initializer in ERL_NIF_INIT macroSteve Vinoski
In the ERL_NIF_INIT macro, add a missing static initializer for the new options field which was added to the ErlNifEntry struct for 17.3. This fix prevents compile-time errors in NIFs when the compiler is instructed to treat missing field initializers as errors.
2014-09-30erts: Fix race between port_set_data, port_get_data and port terminationSverker Eriksson
Always update prt->data with atomic xchg-op. Check for NULL data to detect racing port terminator. Use NULL, as THE_NON_VALUE can be a valid pointer on debug VM.
2014-09-30erts: Fix erlang:port_set_data/2 for non immediate dataSverker Eriksson
hsize field was not set leading to VM crash
2014-09-25No eager check I/O on OSERickard Green
2014-09-25Merge branch 'rickard/eager-check-io/OTP-12117' into ↵Rickard Green
rickard/maint-17/eager-check-io/OTP-12117 * rickard/eager-check-io/OTP-12117: Introduce support for eager check I/O scheduling Conflicts: erts/emulator/beam/erl_bif_info.c erts/emulator/beam/erl_init.c erts/emulator/beam/erl_process.c erts/preloaded/ebin/erlang.beam
2014-09-25Introduce support for eager check I/O schedulingRickard Green
2014-09-22erts: Fix ub in list_to_integer and bignum divLukas Larsson
2014-09-12erts: Remove enif_have_dirty_schedulers()Sverker Eriksson
and add 'dirty_scheduler_support' to ErlNifSysInfo
2014-09-10erts: Correct dirty scheduler NIF API for WindowsSverker Eriksson
enif_schedule_nif() put LAST of the unconditional functions to keep the order which is vital for ABI compatibility on Windows. The conditional dirty scheduler stuff moved down at the end of the list to keep them out of the way. We don't want them mess things up then they become unconditional some day.
2014-09-05Merge branch 'vinoski/enif-schedule-nif' into maintRickard Green
OTP-12128 * vinoski/enif-schedule-nif: Fix leak of NIF exports Use separate allocation type for NIF export
2014-09-05Fix leak of NIF exportsRickard Green
2014-09-05Use separate allocation type for NIF exportRickard Green
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