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2018-01-15Merge branch 'maint'Sverker Eriksson
2018-01-08Merge branch 'john/erts/putenv-thread-safety/OTP-14666'John Högberg
2018-01-04erts: Add non fatal big binary creation for test purposeSverker Eriksson
2018-01-03Replace the libc environment with a thread-safe emulationJohn Högberg
putenv(3) and friends aren't thread-safe regardless of how you slice it; a global lock around all environment operations (like before) keeps things safe as far as our own operations go, but we have absolutely no control over what libc or a library dragged in by a driver/NIF does -- they're free to call getenv(3) or putenv(3) without honoring our lock. This commit solves this by setting up an "emulated" environment which can't be touched without going through our interfaces. Third-party libraries can still shoot themselves in the foot but benign uses of os:putenv/2 will no longer risk crashing the emulator.
2017-12-19Merge branch 'dgud/kernel/refc_sched_wall_time/OTP-11694'Dan Gudmundsson
* dgud/kernel/refc_sched_wall_time/OTP-11694: test: spawn scheduler_wall_time flag holder Turn on scheduler_wall_time in an alive process Redirect system_flag(scheduler_wall_time,_) to kernel_refc kernel: add a resource reference counter
2017-12-19Redirect system_flag(scheduler_wall_time,_) to kernel_refcRickard Green
2017-12-05Merge branch 'maint'John Högberg
2017-12-04Fix process name resolution in lcnt resultsJohn Högberg
2017-11-15erts: Make DFLAGS_NEW_FUN_TAGS mandatorySverker Eriksson
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}.
2017-10-12Merge branch 'lukas/erts/use_SIGRTMIN_for_sys_suspend/OTP-14682'Lukas Larsson
* lukas/erts/use_SIGRTMIN_for_sys_suspend/OTP-14682: erts: Use SIGRTMIN on linux for sys_suspend
2017-10-12erts: Use SIGRTMIN on linux for sys_suspendLukas Larsson
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.
2017-10-02erts: Remove eager check ioLukas Larsson
It is not longer relevant when using the poll thread
2017-10-02erts: Move all I/O polling to a seperate threadLukas Larsson
2017-09-15erts: Add number of enif_select's to check_io_debugSverker Eriksson
2017-09-15erts: Remove undocumented driver_eventSverker Eriksson
2017-09-15erts: Refactor move check_io interface from sys to check_ioSverker Eriksson
# Conflicts: # erts/emulator/beam/erl_process.c # erts/emulator/beam/sys.h # erts/emulator/sys/common/erl_check_io.c # erts/emulator/sys/common/erl_check_io.h # erts/emulator/sys/unix/sys.c
2017-09-11erts: Remove possibility to disable dirty schedulersLukas Larsson
2017-09-05Merge branch 'maint'Rickard Green
* maint: Bug fixes of statistics(wall_clock) and statistics(runtime) Conflicts: erts/emulator/beam/erl_time_sup.c
2017-09-05Merge branch 'rickard/statistics-time-fixes/OTP-14597/ERL-465' into maintRickard Green
* rickard/statistics-time-fixes/OTP-14597/ERL-465: Bug fixes of statistics(wall_clock) and statistics(runtime) Conflicts: erts/emulator/beam/erl_time_sup.c
2017-09-04Bug fixes of statistics(wall_clock) and statistics(runtime)Rickard Green
2017-08-28Merge branch 'rickard/dist/OTP-14459' into rickard/dist/master/OTP-14459Rickard Green
Conflicts: erts/emulator/beam/bif.c erts/emulator/beam/dist.c erts/emulator/beam/dist.h erts/emulator/beam/erl_bif_info.c erts/emulator/beam/erl_node_tables.c erts/emulator/beam/erl_node_tables.h erts/emulator/beam/external.c
2017-08-28Optimize dist entry managementRickard Green
2017-08-28Support for distribution controller processesRickard Green
2017-07-17erts: Replace usage of all erts_smp prefixes to just ertsLukas Larsson
2017-07-17erts: Cleanup removal of non-smp emulatorsLukas Larsson
2017-07-17erts: Remove ERTS_SMP and USE_THREAD definesLukas Larsson
This refactor was done using the unifdef tool like this: for file in $(find erts/ -name *.[ch]); do unifdef -t -f defile -o $file $file; done where defile contained: #define ERTS_SMP 1 #define USE_THREADS 1 #define DDLL_SMP 1 #define ERTS_HAVE_SMP_EMU 1 #define SMP 1 #define ERL_BITS_REENTRANT 1 #define ERTS_USE_ASYNC_READY_Q 1 #define FDBLOCK 1 #undef ERTS_POLL_NEED_ASYNC_INTERRUPT_SUPPORT #define ERTS_POLL_ASYNC_INTERRUPT_SUPPORT 0 #define ERTS_POLL_USE_WAKEUP_PIPE 1 #define ERTS_POLL_USE_UPDATE_REQUESTS_QUEUE 1 #undef ERTS_HAVE_PLAIN_EMU #undef ERTS_SIGNAL_STATE
2017-07-06Merge branch 'john/erts/runtime-lcnt' into maintJohn Högberg
* john/erts/runtime-lcnt: Document rt_mask and add warnings about copy_save Add an emulator test suite for lock counting Break erts_debug:lock_counters/1 into separate BIFs Allow toggling lock counting at runtime Move lock flags to a common header Enable register_SUITE for lcnt builds Enable lcnt smoke test on all builds that have lcnt enabled Make lock counter info independent of the locks being counted OTP-14412 OTP-13170 OTP-14413
2017-07-06Break erts_debug:lock_counters/1 into separate BIFsJohn Högberg
2017-07-06Allow toggling lock counting at runtimeJohn Högberg
The implementation is still hidden behind ERTS_ENABLE_LOCK_COUNT, and all categories are still enabled by default, but the actual counting can be toggled at will. OTP-13170
2017-06-30Merge branch 'rickard/statistics/OTP-14484' into maint-20Erlang/OTP
* rickard/statistics/OTP-14484: Fix statistics(wall_clock) and statistics(runtime) implementation
2017-06-27Merge branch 'maint-19' into maintJohn Högberg
* maint-19: Updated OTP version Update release notes Update version numbers Fix statistics(wall_clock) and statistics(runtime) implementation fixup! erts: Cleanup dropped port tasks correctly erts: Add tests to detect port close race Add a testcase for OTP-13939/ERL-193 erts: Cleanup dropped port tasks correctly Mark socket disconnected on tcp_send_or_shutdown_error
2017-06-22Fix statistics(wall_clock) and statistics(runtime) implementationRickard Green
2017-05-19Make statistics/1 aware of dirty run-queues and tasksRickard Green
2017-05-18Make lock counter info independent of the locks being countedJohn Högberg
This allows us to enable/disable lock counting at will, and greatly improves the performance of erts_debug:lock_counters/1 since we no longer have to worry about the lock counters "dying" while we're enumerating them. OTP-14412
2017-05-04Update copyright yearRaimo Niskanen
2017-04-28Merge PR1413 from g-andrade/feature/phash2_nifSverker Eriksson
Support hashing terms from NIF code
2017-04-25Merge branch 'sverker/refactor'Sverker Eriksson
* sverker/refactor: erts: Introduce struct binary_internals erts: Introduce erts_bin_release erts: Init refc=1 in erts_bin_drv_alloc* erts: Init refc=1 in erts_bin_nrml_alloc erts: Remove deliberate leak of hipe fun entries erts: Remove hipe_bifs:remove_refs_from/1 Refactor hipe specific code to use ErtsCodeInfo erts: Refactor ErtsCodeInfo.native
2017-04-22erts: Support custom salt in enif_hashGuilherme Andrade
2017-04-12erts: Introduce struct binary_internalsSverker Eriksson
to replace macro ERTS_INTERNAL_BINARY_FIELDS as header in Binary and friends.
2017-04-11Merge branch 'rickard/pcre-8.40'Rickard Green
OTP-14331 * rickard/pcre-8.40: Update documentation Update README.pcre_update.md Stack guard for PCRE Adjust for incompatibility between PCRE 8.40 and perl 5.22.1 Generate re replacement and split tests with perl vsn 5.22.1 Fix re_SUITE:pcre_compile_workspace_overflow/1 Skip line with lockout of modifiers in PCRE tests Update tests for PCRE version 8.40 Update PCRE to version 8.40 Conflicts: erts/emulator/beam/beam_debug.c
2017-04-07Stack guard for PCRERickard Green
2017-03-22erts: Replace meta_pid_to{_fixed}_tab with linked listsSverker Eriksson
from process psd through all owned/fixed tables. As meta_pid_to{_fixed}_tab maps to slot in meta_main_tab which is planned for destruction. In this commit we no longer seize table lock while freeing the table (free_table_cont) as it's not needed and makes the code a bit simpler. Any concurrent operation on the table will only access lock, owner and status and then bail out.
2017-03-10Update copyright yearRickard Green
2017-02-20Merge branch 'master' into sverker/enif_selectSverker Eriksson
Conflicts: erts/emulator/beam/erl_binary.h erts/emulator/beam/erl_monitors.c erts/emulator/beam/erl_nif.c erts/emulator/beam/global.h erts/emulator/test/nif_SUITE_data/nif_SUITE.c
2017-02-14erts: Add deallocation veto for magic destructorsSverker Eriksson
A magic destructor can return 0 and thereby take control and prolong the lifetime of a magic binary.
2017-02-09erts: Add enif_monitor_process and enif_demonitor_processSverker Eriksson
2017-02-06Implement magic referencesRickard Green
Magic references are *intentionally* indistinguishable from ordinary references for the Erlang software. Magic references do not change the language, and are intended as a pure runtime internal optimization. An ordinary reference is typically used as a key in some table. A magic reference has a direct pointer to a reference counted magic binary. This makes it possible to implement various things without having to do lookups in a table, but instead access the data directly. Besides very fast lookups this can also improve scalability by removing a potentially contended table. A couple of examples of planned future usage of magic references are ETS table identifiers, and BIF timer identifiers. Besides future optimizations using magic references it should also be possible to replace the exposed magic binary cludge with magic references. That is, magic binaries that are exposed as empty binaries to the Erlang software.
2017-02-06Merge branch 'maint'Rickard Green
* maint: Atomic reference count of binaries also in non-SMP Conflicts: erts/emulator/beam/erl_fun.c
2017-02-06Merge branch 'rickard/binary-refc' into maintRickard Green
OTP-14202 * rickard/binary-refc: Atomic reference count of binaries also in non-SMP Conflicts: erts/emulator/beam/beam_bp.c
2017-02-06Atomic reference count of binaries also in non-SMPRickard Green
NIF resources was not handled in a thread-safe manner in the runtime system without SMP support. As a consequence of this fix, the following driver functions are now thread-safe also in the runtime system without SMP support: - driver_free_binary() - driver_realloc_binary() - driver_binary_get_refc() - driver_binary_inc_refc() - driver_binary_dec_refc()
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