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2015-01-30Merge branch 'egil/fix-child_setup-close/OTP-12446' into maint-17Erlang/OTP
* egil/fix-child_setup-close/OTP-12446: erts: Use closefrom() if available when closing fds erts: Don't close all fds twice in child_setup
2015-01-27erts: Use closefrom() if available when closing fdsBjörn-Egil Dahlberg
closefrom() was only used in the vfork() case before, now also used in the fork() case.
2015-01-23erts: Reserve a file descriptor for the crashdump fileBjörn-Egil Dahlberg
2015-01-23erts: Use emergency close to close epmdBjörn-Egil Dahlberg
Closes all open socket before writing crashdump to file.
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
2014-03-21Raspberry PI / Android a minimal cross-compile configurationDmitry Kolesnikov
Enable a cross compile Erlang/OTP platform to Android or Raspberry PI using Android NDK. Port emulator and core application to support target HW platform. Exclude any add-on services required for OTP platform deployment into target hardware due to device fragmentation and jail-break requirements. * fix erts/emulator/beam/sys.h Disable redefinition of __noreturn macro * port erts/emulator/sys/unix/erl_child_setup.c Use techniques proposed by https://code.google.com/p/erlang4android to access system properties * fix erts/emulator/sys/unix/erl_unix_sys_ddll.c The static linking of emulator cannot find dlerror(), dlopen() symbols * port erts/emulator/sys/unix/sys.c make path to shell configurable at build time * port erts/etc/common/Makefile.in disable librt for *-linux-androideabi * port erts/lib_src/pthread/ethread.c Use techniques proposed by https://code.google.com/p/erlang4android to disable emulator crash if kernel threads are on. Replace unreliable pthread_sigmask() by sigprocmask() * port lib/erl_interface/src/connect/ei_connect.c Disable call to undefined gethostid() * port lib/erl_interface/src/connect/ei_resolve.c Use gethostbyname_r() on Android platform
2014-02-19erts: Fix faulty asserts in erts_sys_aligned_alloc/freeSverker Eriksson
2014-01-28Merge branch 'motiejus/tile_mde3/OTP-11635'Lukas Larsson
* motiejus/tile_mde3/OTP-11635: Undefined MALLOC_USE_HASH macro on TileMDE3 Cross-compilation fix for TileraMDE-3.0.1.125620
2014-01-10Merge branch 'lukas/erts/fd0_pipe_bug/OTP-11558'Lukas Larsson
* lukas/erts/fd0_pipe_bug/OTP-11558: erts: Make sure fds 0,1 and 2 are open
2014-01-10erts: Make sure fds 0,1 and 2 are openLukas Larsson
If they are not open a really nasty race where the io pipe in erl_poll got fd 0 and the fd_driver setting fd 0 to blocking could occur. This caused the emulator to hang during shutdown.
2013-12-15Undefined MALLOC_USE_HASH macro on TileMDE3Motiejus Jakštys
MALLOC_USE_HASH is not defined in TileraMDE-3, but exists in TileraMDE-2. So use macro conditionally.
2013-11-09Add os:unsetenv/1Martin Hässler
New BIF os:unsetenv/1 which deletes an environment variable and returns 'true'. Does not change any old functionality. Calls the libc function unsetenv(3) on UNIX and SetEnvironmentVariableW(key, NULL) on Windows. The unicode support is the same as for os:getenv and os:putenv.
2013-09-30erts: Add __func__ to ERTS_ASSERT macroSverker Eriksson
2013-09-30erts: Refactor the ASSERT macroSverker Eriksson
Introduce unconditional ERTS_ASSERT and use that for both ASSERT and ASSERT_EXPR.
2013-09-25Implement platform specific aligned sys_alloc and use when supportedRickard Green
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.
2013-02-22Update copyright yearsBjörn-Egil Dahlberg
2013-02-13Fix driver port accessesRickard Green
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
2012-12-06Merge branch 'maint'Ingela Anderton Andin
Conflicts: erts/emulator/sys/vxworks/sys.c erts/vsn.mk lib/ssl/src/ssl_connection.erl lib/ssl/test/ssl_basic_SUITE.erl
2012-12-03Use ptab functionality also for portsRickard Green
2012-12-03Prepare for use of ptab functionality also for portsRickard Green
2012-11-30erts: Change default of erl_crash.dumpBjörn-Egil Dahlberg
* Create an erl_crash.dump if no heart exists and no ERL_CRASH_DUMP_SECONDS is set (behaviour changed) * Don't create an erl_crash.dump if heart do exists and no ERL_CRASH_DUMP_SECONDS is set (behaviour not changed) This changes the behaviour back to the R15B02 default considering if a beam was running with no heart. The motivation is that we want a fast heart to fast restart erlang if it crashes but to be able to get non-truncated erl_crash.dumps via setting ERL_CRASH_DUMP_SECONDS if we so desire.
2012-10-24Merge branch 'maint'Björn-Egil Dahlberg
Conflicts: erts/etc/common/heart.c
2012-10-23erts: Fix crash dump write to port hackBjörn-Egil Dahlberg
More future proof with R16
2012-10-16erts: Change ERL_CRASH_DUMP_SECONDS behaviourBjörn-Egil Dahlberg
Not setting ERL_CRASH_DUMP_SECONDS will now terminate beam immediately on a crash without writing a crash dump file. Setting ERL_CRASH_DUMP_SECONDS to 0 will also terminate beam immediately on a crash without writing a crash dump file, i.e. same as not setting ERL_CRASH_DUMP_SECONDS environment variable. Setting ERL_CRASH_DUMP_SECONDS to a negative value will let the beam wait indefinitely on the crash dump file being written. Setting ERL_CRASH_DUMP_SECONDS to a positive value will let the beam wait that many seconds on the crash dump file being written. A positive value will set both an alarm in beam AND a heart timeout for restart if heart is running. This is due to the change of 'heart' behavior when 'heart' is listening for a crash.
2012-10-15erts, heart: Ensure erl_crash.dump is writtenBjörn-Egil Dahlberg
When a crash dump is about to be written and we have heartbeat enabled on a system. We need time to write it before heart explicitly kills the beam.
2012-09-07Replace sprintf with erts_snprintf in beamBjörn-Egil Dahlberg
2012-08-31Update copyright yearsBjörn-Egil Dahlberg
2012-08-14Make get/putenv and erlexec understand UnicodePatrik Nyblom
Putenv and getenv needs to convert to the proper environment strings in Unicode depending on platform and user settings for filename encoding. Also erlexec needs to pass environment strings in an appropriate way for kernel to pick up. All environment strings on the command line, as well as home directory, is now passed in UTF8 on windows and in whatever encoding you have on Unix, kernel tries to convert all parameters and environments from UTF8 before making strings.
2012-04-17Extend erlang:port_info/1,2 to show the OS pid of a spawned processMatthias Lang
When spawning OS (unix) processes with erlang:open_port, store the resulting unix pid so that it can be queried later on using erlang:port_info/1,2.
2011-12-09erl_driver.h: Enlarge types on driver callbacks output, control and callRaimo Niskanen
2011-12-07erl_driver.h: Enlarge types in driver queue and alloc functionsRaimo Niskanen
2011-12-07erl_driver.h: Use ErlDrvSizeT for size field in ErlIOVecRaimo Niskanen
2011-12-02Fix time typesRickard Green
2011-11-13Merge branch 'rickard/generic-thr-queue/OTP-9632'Rickard Green
* rickard/generic-thr-queue/OTP-9632: Use generic lock-free queue for async threads Use generic lock-free queue for misc aux work Implement generic lock-free queue
2011-11-13Merge branch 'rickard/thr-progress-block/OTP-9631'Rickard Green
* rickard/thr-progress-block/OTP-9631: Replace system block with thread progress block
2011-11-13Merge branch 'rickard/alloc-opt/OTP-7775'Rickard Green
* rickard/alloc-opt/OTP-7775: Optimize memory allocation Conflicts: erts/aclocal.m4 erts/emulator/hipe/hipe_bif_list.m4 erts/preloaded/ebin/erl_prim_loader.beam erts/preloaded/ebin/erlang.beam erts/preloaded/ebin/init.beam erts/preloaded/ebin/otp_ring0.beam erts/preloaded/ebin/prim_file.beam erts/preloaded/ebin/prim_inet.beam erts/preloaded/ebin/prim_zip.beam erts/preloaded/ebin/zlib.beam
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.
2011-11-13Replace system block with thread progress blockRickard Green
The ERTS internal system block functionality has been replaced by new functionality for blocking the system. The old system block functionality had contention issues and complexity issues. The new functionality piggy-backs on thread progress tracking functionality needed by newly introduced lock-free synchronization in the runtime system. When the functionality for blocking the system isn't used there is more or less no overhead at all. This since the functionality for tracking thread progress is there and needed anyway.
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.
2011-11-08Merge branch 'bjorn/create-less-garbage'Björn Gustavsson
* bjorn/create-less-garbage: Optimize filename:basename/1 to produce less garbage Optimize filename:extension/1 to produce less garbage sys.c for Unix: Undo caching of utsname in os_flavor() Pre-build the tuples returned by os:type/0 and os:version/0
2011-11-07erts: "initialized" is only used with CHLDWTHRBjörn-Egil Dahlberg
2011-10-14Merge branch 'rickard/atomics-api/OTP-9014' and OTP_R14B04Rickard Green
Conflicts: erts/aclocal.m4 erts/emulator/beam/erl_db.c erts/emulator/sys/win32/sys.c erts/include/internal/ethread_header_config.h.in
2011-10-09sys.c for Unix: Undo caching of utsname in os_flavor()Björn Gustavsson
Since his function will be called only once, caching is a waste of memory.
2011-09-19Merge branch 'dev' into majorBjörn-Egil Dahlberg
* dev: gs: Update to modern type guards in examples os_mon: Check results from fgets in cpu_sup erts: Remove compiler warning in sys.c
2011-09-16erts: Remove compiler warning in sys.cBjörn-Egil Dahlberg
2011-09-16Merge branch 'dev' into majorBjörn-Egil Dahlberg
* dev: Move init of smp rw mutex from init to sys_args to make sure that it is initialized before the first erts_sys_getenv call Move erts_sys_env_init() to erts_sys_pre_init() Remove _DEBUG from start_erl.c Spelling correction in erlsrv doc Convert windows start_erl to take rootdir on command line Add command start_disabled to erlsrv Add global lock for erlsrv to avoid races Change start order so that service_event gets initialized before it's used Conflicts: erts/emulator/sys/win32/sys.c
2011-07-08Move init of smp rw mutex from init to sys_args to make sure that it is ↵Lukas Larsson
initialized before the first erts_sys_getenv call
2011-06-14Use new atomic API in runtime systemRickard Green
All uses of the old deprecated atomic API in the runtime system have been replaced with the use of the new atomic API. In a lot of places this change imply a relaxation of memory barriers used.
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