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2019-04-24erts: Simplify erts_get_port_namesSverker Eriksson
No need to pre-allocate a buffer before name length calculation.
2019-04-05Fail when we cannot encode term in binaryRickard Green
Fail when we cannot encode term in binary instead of producing a faulty result.
2019-02-22erts: Implement trapping while sending distr exit/downLukas Larsson
The reason in EXIT and DOWN may be arbitrarily large, so we yield and allow other processes to execute while encoding and sending the signals over the distribution.
2019-02-21erts: Remove a copy of distribution data payloadLukas Larsson
Before this change the inet driver was in list mode and thus the data from it had to be copied when received by the dist entry. This change puts the tcp port in binary mode and makes the any refc binary created by it be used all the way to the process where it is decoded. Thus eliminating one copy of the entire message payload.
2019-02-05erts: Refactor rbt _yielding to use reductionsLukas Larsson
All of the Red-Black Tree _yielding functions have been updated to work with reductions returned by the called function instead of yielding on each element.
2019-01-28erts: Add magic port control numbersSverker Eriksson
to increase the probablity of a nice badarg from erlang:port_control.
2018-09-18erts: Refactor port dist_entry & conn_id into PRTSDSverker Eriksson
spelled out as "port specific data".
2018-09-18Consolidate distribution entry state transitionsSverker Eriksson
* Make connection_id part of the distribution handle as {ConnId, DistEntry} in order for BIFs to verify correct connection. * Make distribution handle opaque to net_kernel. * Remove some unsafe lockless reads of DistEntry.flags * Change state ERTS_DE_STATE_EXITING to be more of an internal state that prevents erts from enqueue, encode or schedule new data to be sent. Otherwise it should behave like ERTS_DE_STATE_CONNECTED.
2018-08-03erts: Fix seq_trace to not clear token for system messagesLukas Larsson
A lot of erts internal messages used behind APIs to create non-blocking calls, e.g. port_command, would cause the seq_trace token to be cleared from the caller when it should not. This commit fixes that and adds asserts that makes sure that all messages sent have to correct token set. Fixes: ERL-602
2018-04-16erts: Always keep a copy of driver names as an atomJohn Högberg
2018-04-16erts: Update esdp->current_port on immediate port callsJohn Högberg
This increases the accuracy of crash dumps and the upcoming allocation tagging feature.
2018-03-28Merge branch 'sverker/driver-taints/OTP-14960'Sverker Eriksson
* sverker/driver-taints/OTP-14960: erts: Include foreign static linked drivers in taints erts: Fix harmless bug in macro IS_DRIVER_VERSION_GE erts: Remove our own NIF modules from "taints" erts: Refactor erts_static_nif_get_nif_init erts: Add dynamic loaded drivers to list of "taints"
2018-03-26erts: Include foreign static linked drivers in taintsSverker Eriksson
That is, driver added with config option --enable-static-drivers.
2018-03-26erts: Fix harmless bug in macro IS_DRIVER_VERSION_GESverker Eriksson
harmless until we bump major version
2018-03-23Fix VM probes compilationJohn Högberg
2018-03-21Implementation of true asynchronous signaling between processesRickard Green
Communication between Erlang processes has conceptually always been performed through asynchronous signaling. The runtime system implementation has however previously preformed most operation synchronously. In a system with only one true thread of execution, this is not problematic (often the opposite). In a system with multiple threads of execution (as current runtime system implementation with SMP support) it becomes problematic. This since it often involves locking of structures when updating them which in turn cause resource contention. Utilizing true asynchronous communication often avoids these resource contention issues. The case that triggered this change was contention on the link lock due to frequent updates of the monitor trees during communication with a frequently used server. The signal order delivery guarantees of the language makes it hard to change the implementation of only some signals to use true asynchronous signaling. Therefore the implementations of (almost) all signals have been changed. Currently the following signals have been implemented as true asynchronous signals: - Message signals - Exit signals - Monitor signals - Demonitor signals - Monitor triggered signals (DOWN, CHANGE, etc) - Link signals - Unlink signals - Group leader signals All of the above already defined as asynchronous signals in the language. The implementation of messages signals was quite asynchronous to begin with, but had quite strict delivery constraints due to the ordering guarantees of signals between a pair of processes. The previously used message queue partitioned into two halves has been replaced by a more general signal queue partitioned into three parts that service all kinds of signals. More details regarding the signal queue can be found in comments in the erl_proc_sig_queue.h file. The monitor and link implementations have also been completely replaced in order to fit the new asynchronous signaling implementation as good as possible. More details regarding the new monitor and link implementations can be found in the erl_monitor_link.h file.
2018-03-12Merge branch 'john/erts/assert-on-memcpy-memset-etc'John Högberg
* john/erts/assert-on-memcpy-memset-etc: Always use sys_memcpy/cmp/etc instead of plain memcpy/cmp/etc Check the arguments to sys_memcpy and friends
2018-03-09Always use sys_memcpy/cmp/etc instead of plain memcpy/cmp/etcJohn Högberg
2018-03-05Replace usage of ERTS_PSFLG_BOUNDRickard Green
2018-02-22Merge 'sverker/erts/more-crash-dump-info/OTP-14820'Sverker Eriksson
2018-02-22erts,observer: Add port-suspended pids to crash dumpSverker Eriksson
2018-02-22erts,observer: Add port states and flags to crash dumpSverker Eriksson
2018-02-20erts,observer: Add more port info to crash dumpSverker Eriksson
2018-01-16Merge branch 'sverker/build-proc-bin'Sverker Eriksson
2018-01-05erts: Refactor more usage of erts_build_proc_binSverker 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.
2017-11-15Refactor erts_dsig_prepare argument dep(p)Sverker Eriksson
Don't need to be pointer-pointer
2017-11-15erts: Introduce asynchronous auto-connectSverker Eriksson
2017-09-15erts: Remove undocumented driver_eventSverker Eriksson
2017-09-11erts: Remove possibility to disable dirty schedulersLukas Larsson
2017-09-06Merge branch 'maint' into john/erts/merge-zlib-and-vector-qJohn Högberg
2017-09-05erts: Add nif ioqLukas Larsson
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
2017-08-28Support 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
2017-07-06Allow 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 'lukas/erts/fix_outputv_port_task_cleanup/ERL-428/OTP-14481' ↵Erlang/OTP
into maint-20 * lukas/erts/fix_outputv_port_task_cleanup/ERL-428/OTP-14481: fixup! erts: Cleanup dropped port tasks correctly erts: Add tests to detect port close race erts: Cleanup dropped port tasks correctly
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
2017-06-14erts: Cleanup dropped port tasks correctlyLukas Larsson
Before this fix, the extra data attached to a port task had to be cleaned up by the calling function. This caused problems because the outputv call, co-allocates the extra data with the port task. So in rare circumstances the port task would be free'd before the extra data was free'd which led to segfault when looking at the port task. This has been fixed by the generic PORT_TASK_ABORT behaviour being used even for tasks dropped in the erts_schedule_proc2port_signal API.
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
2017-05-16Merge pull request #1435 from SalikhovDinislam/static_funcLukas Larsson
erts: Make erts_schedule_proc2port_signal static
2017-05-05erts: Unbreak --enable-lock-checking --enable-lock-counterSverker Eriksson
both together. Broken in OTP-20.0-rc1 by 7d161f5b475575bd79bd90977b3a79334a8ec658.
2017-05-04Update copyright yearRaimo Niskanen
2017-04-30Make a function staticSalikhov Dinislam
2017-04-12erts: Introduce struct binary_internalsSverker Eriksson
to replace macro ERTS_INTERNAL_BINARY_FIELDS as header in Binary and friends.
2017-04-11erts: Introduce erts_bin_releaseSverker Eriksson
2017-04-11erts: Init refc=1 in erts_bin_drv_alloc*Sverker Eriksson