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2018-01-08Merge branch 'john/erts/putenv-thread-safety/OTP-14666'John Högberg
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.
2017-12-21Merge branch 'maint'Sverker Eriksson
2017-12-12erts: Trim driver_SUITE:smp_select for slow valgrindSverker Eriksson
Symptom: "Closing pipe in state Waiting. Event lost?" Snake oil: Do erlang:yield() instead of busy spinning in "Waiting" state.
2017-10-02erts: Move all I/O polling to a seperate threadLukas Larsson
2017-10-02erts: Fix smp_select testcase to use ERL_DRV_USELukas Larsson
This is needed with the new poll-thread implementation as now closed fd's in the pollset will be triggered much faster than before.
2017-09-15erts: Remove undocumented driver_eventSverker Eriksson
2016-12-19erts: Add ERL_ABORT_ON_FAILURE for driver_SUITESverker Eriksson
2016-09-02Ensure long enough sleep in driver_SUITE:timer_delay driverRickard Green
2016-03-15update copyright-yearHenrik Nord
2015-06-18Change license text to APLv2Bruce Yinhe
2014-09-12erts: Remove enif_have_dirty_schedulers()Sverker Eriksson
and add 'dirty_scheduler_support' to ErlNifSysInfo
2014-03-21Introduce minimum allowed major driver and nif versions on loadRickard Green
2014-02-05erts: Fix driver_SUITE:otp_9302 for VM without threadsSverker Eriksson
2014-01-15remove deprecated driver_async_cancel functionSteve Vinoski
Some time ago the driver_async_cancel function was deprecated and slated for removal in R17. This commit removes the function along with its associated tests and documentation, sets the ERL_DRV_EXTENDED_MAJOR_VERSION to 3 and ERL_DRV_EXTENDED_MINOR_VERSION to 0, and modifies the sys_info_base_drv and sys_info_prev_drv tests in the driver test suite to check version 3.0 instead of 2.0.
2013-05-06erts: Change some more 'long' to pointer sized int (ErlDrvUInt)Sverker Eriksson
2013-02-22Update copyright yearsBjörn-Egil Dahlberg
2013-02-13Implement erl_drv_consume_timeslice()Rickard Green
2013-01-25Update copyright yearsBjörn-Egil Dahlberg
2012-12-19Replace use of deprecated functions in test casesRickard Green
driver_send_term() replaced by erl_drv_send_term(). driver_output_term() replaced by erl_drv_output_term().
2012-12-07Merge branch 'rickard/port-optimizations/OTP-10336' into ↵Rickard Green
rickard/r16/port-optimizations/OTP-10336 * rickard/port-optimizations/OTP-10336: Change annotate level for emacs-22 in cerl Update etp-commands Add documentation on communication in Erlang Add support for busy port message queue Add driver callback epilogue Implement true asynchronous signaling between processes and ports Add erl_drv_[send|output]_term Move busy port flag Use rwlock for driver list Optimize management of port tasks Improve configuration of process and port tables Remove R9 compatibility features Use ptab functionality also for ports Prepare for use of ptab functionality also for ports Atomic port state Generalize process table implementation Implement functionality for delaying thread progress from unmanaged threads Conflicts: erts/doc/src/erl_driver.xml erts/doc/src/erlang.xml erts/emulator/beam/beam_bif_load.c erts/emulator/beam/beam_bp.c erts/emulator/beam/beam_emu.c erts/emulator/beam/bif.c erts/emulator/beam/copy.c erts/emulator/beam/erl_alloc.c erts/emulator/beam/erl_alloc.types erts/emulator/beam/erl_bif_info.c erts/emulator/beam/erl_bif_port.c erts/emulator/beam/erl_bif_trace.c erts/emulator/beam/erl_init.c erts/emulator/beam/erl_message.c erts/emulator/beam/erl_port_task.c erts/emulator/beam/erl_process.c erts/emulator/beam/erl_process.h erts/emulator/beam/erl_process_lock.c erts/emulator/beam/erl_trace.c erts/emulator/beam/export.h erts/emulator/beam/global.h erts/emulator/beam/io.c erts/emulator/sys/unix/sys.c erts/emulator/sys/vxworks/sys.c erts/emulator/test/port_SUITE.erl erts/etc/unix/cerl.src erts/preloaded/ebin/erlang.beam erts/preloaded/ebin/prim_inet.beam erts/preloaded/src/prim_inet.erl lib/hipe/cerl/erl_bif_types.erl lib/kernel/doc/src/inet.xml lib/kernel/src/inet.erl
2012-12-03Implement functionality for delaying thread progress from unmanaged threadsRickard Green
2012-07-19erts: Remove VxWorks from testsBjörn-Egil Dahlberg
2011-12-09Merge branch 'raimo/64-bit-driver-api/OTP-9795'Björn Gustavsson
* raimo/64-bit-driver-api/OTP-9795: (22 commits) driver_SUITE.erl: Fix sys info drivers emulator test drivers: Conform to updated driver API runtime_tools's drivers: Conform to updated driver API ws's xwe_driver.c: Conform to updated driver API megaco's flex scanner: Conform to updated driver API seq_trace_SUITE_data/echo_drv.c: Conform to updated driver API erl_interface tests: Conform port_call_drv.c updated driver API erl_drv_thread_SUITE_data/testcase_driver.c: Conform to updated driver API float_SUITE_data/fp_drv.c: Conform to updated driver API port_SUITE_data/*_drv.c: Conform to updated driver API port_bif_SUITE_data/control_drv.c: Conform to updated driver API send_term_SUITE_data/send_term_drv.c: Conform to updated driver API system_profile_SUITE_data/echo_drv.c: Conform to updated driver API trace_port_SUITE_data/echo_drv.c: Conform to updated driver API Remove support for old drivers without ERL_DRV_EXTENDED_MARKER built-in drivers: Add ERL_DRV_EXTENDED_MARKER and version numbers Bump driver version to 2.0 erl_driver.h: Enlarge type on return value from call erl_driver.h: Enlarge types on driver callbacks output, control and call erl_driver.h: Enlarge types in driver output functions ... Conflicts: erts/emulator/test/driver_SUITE_data/monitor_drv.c erts/emulator/test/driver_SUITE_data/timer_drv.c
2011-12-09driver_SUITE.erl: Fix sys info driversRaimo Niskanen
2011-12-09emulator test drivers: Conform to updated driver APIRaimo Niskanen
2011-12-07erts: Fix memory leak in test driversSverker Eriksson
2011-11-13Use generic lock-free queue for async threadsRickard Green
Queues used for communication between async threads and scheduler threads have been replaced with lock-free queues. Drivers using the driver_async functionality are not automatically locked to the system anymore, and can be unloaded as any dynamically linked in driver. Scheduling of ready async jobs is now also interleaved in between other jobs. Previously all ready async jobs was performed at once.
2011-11-13Optimize memory allocationRickard Green
A number of memory allocation optimizations have been implemented. Most optimizations reduce contention caused by synchronization between threads during allocation and deallocation of memory. Most notably: * Synchronization of memory management in scheduler specific allocator instances has been rewritten to use lock-free synchronization. * Synchronization of memory management in scheduler specific pre-allocators has been rewritten to use lock-free synchronization. * The 'mseg_alloc' memory segment allocator now use scheduler specific instances instead of one instance. Apart from reducing contention this also ensures that memory allocators always create memory segments on the local NUMA node on a NUMA system.
2011-05-20Fix testcaseRickard Green
2011-05-18Fix driver_async_cancel()Rickard Green
2011-02-21Allow unexpected driver input event in driver_SUITE:smp_selectSverker Eriksson
epoll on Linux has been seen to sometimes trigger unexpected events. Most of the time these events are filtered by erl_check_io, but may slip up to the driver in cases when fd's are reused. Also made clear in driver docs that spurious events may happen.
2010-05-05OTP-8581 Revert prototype of driver_asyncPatrik Nyblom
2010-04-30emulator tests: Remove stray OSE/Delta supportBjörn Gustavsson
2010-03-12Teach testcase in driver_suite the new prototype for driver_asyncPatrik Nyblom
The testcase core dunmped. Also made sure the key could actually store long integers in driver_async (which is more of a cosmetic change).
2010-03-10OTP-8475 status lock needed when looking up ioq from async threadsRickard Green
Driver threads, such as async threads, using <seealso marker="erl_driver#ErlDrvPDL">port data locks</seealso> peeked at the port status field without proper locking when looking up the driver queue.
2009-11-20The R13B03 release.OTP_R13B03Erlang/OTP
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