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path: root/erts/emulator/beam/erl_hl_timer.c
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2017-05-04Update copyright yearRaimo Niskanen
2017-04-18Remove unnecessary cancel callback from timer-wheel timersRickard Green
2017-04-18Rearrange timer struct fields in order to simplifyRickard Green
2017-04-18Use timer wheel for short BIF timersRickard Green
2017-04-18Use magic refs for BIF timersRickard Green
2017-04-18Remove accessor BIF timer implementationRickard Green
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.
2017-01-11Merge branch 'rickard/crashdump-timer-fix' into maintRickard Green
OTP-14133 * rickard/crashdump-timer-fix: Fix printout of timer data in crash dump
2016-12-28Fix crash due to GC of node entry on dirty schedulerRickard Green
The dirty scheduler failed to set a timer. Dispatch this job to an ordinary scheduler.
2016-12-19Fix printout of timer data in crash dumpRickard Green
2016-11-17erts: Refactor crash dumping with cbprintfSverker Eriksson
Instead of passing around a file descriptor use a function pointer to facilitate more advanced backend write logic such as size limitation or compression.
2016-08-11Merge branch 'rickard/proc-tmo-bug/OTP-13798' into maint-19Erlang/OTP
* rickard/proc-tmo-bug/OTP-13798: Fix race causing lost wakeup on receive-after timeout
2016-08-11Fix race causing lost wakeup on receive-after timeoutRickard Green
2016-05-11Add better support for communication with a process executing dirty NIFRickard Green
- Termination of a process... - Modify trace flags of process... - Process info on process... - Register/unregister of name on process... - Set group leader on process... ... while it is executing a dirty NIF.
2016-05-04erts: Add Sender in 'receive' trace matchspecSverker Eriksson
All 'EXIT' and monitor messages are sent from 'system' Timeouts are "sent" from 'clock_service'
2016-04-15erts: Implement tracer modulesLukas Larsson
Add the possibility to use modules as trace data receivers. The functions in the module have to be nifs as otherwise complex trace probes will be very hard to handle (complex means trace probes for ports for example). This commit changes the way that the ptab->tracer field works from always being an immediate, to now be NIL if no tracer is present or else be the tuple {TracerModule, TracerState} where TracerModule is an atom that is later used to lookup the appropriate tracer callbacks to call and TracerState is just passed to the tracer callback. The default process and port tracers have been rewritten to use the new API. This commit also changes the order which trace messages are delivered to the potential tracer process. Any enif_send done in a tracer module may be delayed indefinitely because of lock order issues. If a message is delayed any other trace message send from that process is also delayed so that order is preserved for each traced entity. This means that for some trace events (i.e. send/receive) the events may come in an unintuitive order (receive before send) to the trace receiver. Timestamps are taken when the trace message is generated so trace messages from differented processes may arrive with the timestamp out of order. Both the erlang:trace and seq_trace:set_system_tracer accept the new tracer module tracers and also the backwards compatible arguments. OTP-10267
2016-03-15update copyright-yearHenrik Nord
2016-01-22Merge branch 'maint'Rickard Green
* maint: Fix HL timer hard debug implementation Fix stack alignment problem in ethread test on arm Skip time_SUITE:timestamp on timewarp test
2015-12-30Fix HL timer hard debug implementationRickard Green
2015-12-29Fix asynchronous BIF timer cancellation message replyRickard Green
2015-11-12Fragmented young heap generation and off_heap_message_queue optionRickard Green
* The youngest generation of the heap can now consist of multiple blocks. Heap fragments and message fragments are added to the youngest generation when needed without triggering a GC. After a GC the youngest generation is contained in one single block. * The off_heap_message_queue process flag has been added. When enabled all message data in the queue is kept off heap. When a message is selected from the queue, the message fragment (or heap fragment) containing the actual message is attached to the youngest generation. Messages stored off heap is not part of GC.
2015-06-22Fix node/dist refc countRickard Green
2015-06-18Change license text to APLv2Bruce Yinhe
2015-06-09Callback timerRickard Green
2015-06-09Disable accessor timer optionRickard Green
2015-05-12Merge branch 'rickard/timer-optimization/OTP-12650'Rickard Green
* rickard/timer-optimization/OTP-12650: Timer fixes, documentation, and test cases Conflicts: erts/emulator/beam/erl_hl_timer.c
2015-05-12Timer fixes, documentation, and test casesRickard Green
2015-05-08Merge branch 'rickard/timer-optimization/OTP-12650'Rickard Green
* rickard/timer-optimization/OTP-12650: Optimized timer implementation Reusable red-black tree implementation Conflicts: erts/emulator/beam/erl_bif_timer.c
2015-05-08Optimized timer implementationRickard Green