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data is being used across multiple threads and a portion of that usage is lock-free (#25366)
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- Fixes EventPipe does not properly dispose of itself on an active session error #25228
- On EventPipeSession::ThreadProc, if an error occurs on the IPC streaming, then EventPipe::Disable will be invoked.
- Fixes Prevent EventPipe Sessions IDs from being reused on disconnect #25229
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(#25276)
* Add EventPipe Processor Number support and make NetTrace the default format
The EventPipe header now has a Processor Number field. On windows we query the correct value, on other OSes we currently have a -1 placeholder, but the field is written to the format regardless.
NetTrace is now the default format when using the environment variable, and the format must be explicitly configured when using the IPC channel or managed API. A parallel change in the diagnostics repo is changing dotnet-trace and dotnet-counter to specify nettrace format which means .NET devs should see nettrace almost exclusively from now on. If for whatever reason it is needed, NetPerf remains available if a scenario explicitly requests to use it.
* PR feedback + attempting to fix broken tests
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* Replace runtime check with compile time assert.
* Move EventPipeEventPayload to its own file.
* Move `StackContents` to its own file.
* Move other classes declaration/definition out of eventpipe.*
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* Taking the event pipe lock around s_tracingInitialized.
https://github.com/dotnet/coreclr/pull/24896#discussion_r291790885
* Remove unused `EventPipe::s_fileSwitchTimerHandle` and `EventPipe::s_lastFlushTime` static variables.
* Improve `EventPipe::Shutdown` thread-safety (This is not complete yet as shutting down configuration might cause an AV if WriteEvent happens during or after `EventPipe::Shutdown`).
* Make sure we call `EventPipe::Shutdown` only once (the first time around).
* Move two EventPipe methods to `private`
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Right now the new format is not on by default, but it can be enabled using COMPlus_EventPipeNetTraceFormat = 1 for testing purposes. The plan to have a follow up PR that will add shipping configuration mechanisms and change the default setting.
See the documentation in the PerfView repo for more details about the format. At a glance the goal is to create a format that is more efficient to produce, has a smaller on disk size, and offers enhanced functionality in a few areas:
a) 64 bit thread id support
b) Detection of dropped events via sequence numbers
c) Better support for extracting subsets of the file
Together with the change there was also some refactoring of the EventPipeBufferManager and EventPipeThread.
This change addresses (at least in part) the following issues:
#19688, #23414, #24188, #20751, #20555, #21827, #24852, #25046
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`EventPipe::WriteEvent*` does not use the `EventPipe::Crst` which created race conditions with other methods such as EventPipe::Disable.
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This is the initial work to enable https://github.com/dotnet/coreclr/issues/15377
## What's here?
- A lot of code move/split. Some important moves:
- `EventPipe` has a colection of `EventPipeSessions` instead of a single session.
- `EventPipeSession` now owns a `EventPipeBufferManager` and a `EventPipeFile`
- `EventPipeThread` now owns a collection of { EventPipeBufferManager, EventPipeBuffer }, and a collection of { EventPipeBufferManager, EventPipeBufferList }
- There is a cap on the max number of `EventPipeSession` (64 sessions)
- `EventPipeProvider` and `EventPipeEvent` use a 64-bit mask to keep track of the sessions that are listening to provider/events.
## What's pending?
https://github.com/dotnet/coreclr/issues/24753
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Added public static function GetManagedCommandLine() and SaveManagedCommandLine()
Moved GetManagedCommandLine and SaveManagedCommandLine to ceeload to link
Disabled the setup for BBSweep on Linux as the PAL doesn’t support process named objects
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FEATURE_PAL"
This reverts commit 08422af33fa2026953c2e720cecf000ed4345a32.
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Added public static function GetManagedCommandLine() andSaveManagedCommandLine()
Add helper method Append_Next_Item
Moved GetManagedCommandLine and SaveManagedCommandLine to ceeload to link crossgen
Cleanup, codereview feedback
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acquistion
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- Update MicrosoftDiagnosticsTracingTraceEventPackageVersion
- Delete connection if the request is unknown/unhandled
- Adding missing error handling.
- Provider names must be defined.
- Some renaming, error handling, and build warnings.
- Removing test code, and merge EventPipe::Enable functions.
- Remove commented/non-used lines.
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This option was a pseudo mechanism to fake "streaming" events out-of-proc.
The idea was to have EventPipe creating files every N seconds, with event data up to that point. Thus, external processes could read these files in an attempt to get "read-time" data.
Now, we actually have streaming of event through IPC channels, so this option is not needed.
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- There was a race condition on EventPipe::Disable where we deallocated the s_pSession and set it to NULL, but there was still a thread waiting to write and dereference the null pointer. Now, we check that the session is not null.
- Added a new attach event to be handled to the Diagnostic server: Add streaming functionality (Syncronus) #23299
- On Linux, IPC was failing when delete was invoked because we were using new (std::nothrow) instead of new (nothrow) when allocating the newly connected clients/streams. I have replaced the call with new. This fixed #23580
- Move multiFileTraceLengthInSeconds out of the EventPipeSession.
- Unlink previously existing socket.
- EventPipeBlock: _ASSERTE was updated not to fail when data is not aligned if an error has already occurred.
- Update _ASSERTE in fastserializer.cpp to take into account the the write operation could have failed.
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(#23106)
This is the first commit to enable a "diagnostic port" using IPC (Named Pipe on Windows and Unix Domain Socket on other platforms). This change currently enable EventPipe to be enabled/disabled without the use of a file drop.
- Split the DiagnosticsIpc into (DiagnosticsIpc/IpcStream)
- DiagnosticsIpc (IPC listener) is meant to be used by the Diagnostic server.
- IpcStream (IPC channel) is meant to be use to communicate with the connected client.
- Change the FastSerializer dependency from `CFileStream` to `StreamWriter`
This abstraction is meant decouple the writing of objects in order to extend its usability.
The main objective is to reuse FastSerializer to stream data through the open IPC channel.
- Moved the EventPipeSessionProvider* classes to their own file.
- Added a more streamlined parsing achievable by defining a simpler binary protocol (by noahfalk).
1. Only one allocation is needed for the EventPipeProviderConfiguration array, no allocations or copies are needed for strings because we can refer to them directly out of the incoming command buffer
2. No change to the EventPipe API for enable is required. EventPipeProviderConfiguration retains its current behavior of not deleting the string pointers it holds.
3. No leaks happen because the command buffer owns the string memory and ensures that it stays alive for the duration of the Enable() call.
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These changes enable passing "arguments" to an EventSource.
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* Add EventWrittenEventArgs public properties OSThreadId and TimeStamp and plumb through OSThreadId.
* Plumb ActivityId and RelatedActivityId to EventListener.
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Also expose COMPlus configuration variables to support session configuration and output file path. (#16018)
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* Revert "Revert "Enable EventPipe across Unix and Windows (#14772)" (#15609)"
This reverts commit 302005ca8ae14eade37ddf4ac6e900617c1c166a.
* Fix ARM build break
* Use more explicit references to resolve build failures
* Fix compat with python3
* Disable FeaturePerfTracing on Windows as it is not ready
* Disable test for incomplete functionality
* Fix test diabled patterns
* Add license header
* Use keyword types for managed code
* Add message prefix
* More precisly condition generation of eventing sources
* Remove erroneously added changes
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This reverts commit 7524d72d4f0f634fe5407280b83c25181dc8c556.
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* [squashed] most work complete to enable EventPipe on Windows
* Eventpipe now builds on Windows
* Ensure evevntpipe is intialized on Windows
* Resolve the location of python from build.cmd
* Ensure eventing files are generated when needed
* moving linkage declaration to cmake
* create new event from constructor
* enable FEATURE_EVENT_TRACE and FEATURE_PERF_TRACE everywhere
* [WIP] checkpoint in fixing contarct errors
* add another possible python location
* Fix double delete bug in EventPipeConfiguration destructor
* Fix typo in function name
* Revert changes to .gitgnore
* bump to netstandard1.6 in preperation for new version of TraceEvent
* Revert changes to groovy files
* revert changes to perf-prep scripts
* add common.h and use nothrow
* Fix issue which was causing double delete of configprovider
* Add new test utilizing TraceEvent
* Remove accidentally added local directory reference
* Add comment to explain the addition of misc/tracepointprovider.cpp
* Add back sys.exit(0) and refactor
* Change conditional to be more direct
* Better handle NULL config
* Initialize m_deleteDefered
* Eliminate obsolete field
* Fix spelling error
* Fix nits
* Make smaple progiler timing functions easier to read
* Move projects back to netstandard1.4
* Incomplete improvements to EventPipeTrace test
* Add event integrity checks to test
* Clean up some left over code
* Add EventSource based test
* Remove unused PAL tests on Windows
* Fix Linux build breaks
* Minor changes to CMake files
* Remove //HACK for hack that was previously removed
* Fix formatting and negate a #ifdef
* Add conditional to ensure PERFTRACING is not enabled without EVENT_TRACE
* Take lock on EventPipeProvider and EventPipeConfiguration destruction
* Load winmm.dll at runtime
* Change function name and compile conditions
* Move typedef into #ifndef
* Use the correct config in setup
* Change lifecycle managment of EventPipeConfiguration's configuration provider
* Enable EventPipe tests pri0 and disable broken tests
* Replace python3 only error with python2 compatable one
* Make common.csproj build pri0
* Change TraceEvent version to 2.0.2 to match published verison
* Address cross build failure
* Remove use of undefined variable
* Add crossgen fix to .cmd
* Use more specific types to avoid marshalling errors
* Use Assert-style statements and remove one check
* Fix cross arch build
* Fix flipped branch
* Bring build.cmd changes to build.sh
* Fix cmake writing
* Revert "Bring build.cmd changes to build.sh"
This reverts commit 893c6492548d8bc9859ebba5b1b810aa630fac63.
* remove stdlib.h
* Fix out of order null check
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* [WIP] Changed event provider to user String identifiers
* [WIP] Remove GUID from generated code
* [WIP] Many small fixes
* [WIP] Fix error in constructing GUID
* Pass EventSource to abstract away GUID/Name references
* Fix various small errors
* Delay construction of SString objects
* Change GUIDs to names
* Change hardcoded GUID strings to names
* Revert testing changes
* Remove extra line
* Use the EventSource name
* Use provider full names
* Use full-names for Rundown
* Bump version number for eventpipe file
* Address review comments
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* [WIP] Eliminate extra buffer copy with new api path
* Copy blobs to a flat buffer is Rundown is on
* Refactor to use payload class and dedupe code
* Add contracts
* Fix many small errors
* Make names unambiguous
* Add EventPipe::WriteEventBlob to ecalllist.h
* Address code review
* Add test and fix a buffer copy bug
* Copy data instead of data pointer
* Add optional output file arg to tests
* Change failure return code
* Renamed variables for clarity
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- just remove FEATURE_READYTORUN definitions
in clrdefinitions.cmake to turn off option
Signed-off-by: Petr Bred <bredpetr@gmail.com>
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EventPipe (#11904)
* Implement thread-local storage of activity ids.
* Plumb the activity id and related activity id into the trace file.
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* Fix EventPipe initialization.
* rebase code with master, add prototype of event source metadata
* fix define event
* add null ptr checking
* move WriteEvent metadata serialization to managed side
* Fix enabled keywords for COMPlus_PerformanceTracing=1.
* put parameter name into metadata, use WriteToBuffer
* Write event metadata to the file.
* allocate buffer in EventPipeEvent ctor
* prevent double free
* refactor code
* AddEvent params reorder
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Re-Factor EventSource to Support Writing to EventPipe.
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* Implement the EventPipe object model for providers and events.
* Plumb Runtime Events into EventPipe (#11145)
Plumb runtime ETW events into the EventPipe.
* Fix bug where all events except for SampleProfiler events were never enabled.
* Plumb EventPipeEventInstance through the EventPipe.
* Implement EventPipeFile and FastSerializer.
* Write event contents to the EventPipeFile.
* Only build EventPipe on Linux.
* Conditionally add a sentinel value marking event end.
* Send SampleProfiler events to the EventPipeFile.
* Fix provider ID printing to JSON file.
* Write the start date/time, timestamp, and clock frequency into the trace file.
* Support unloading of EventPipeProviders.
* Handle failure cases when we can't walk the stack or are shutting down.
* Fix a bug where we pass a null src pointer to memcpy.
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JSON. SampleProfiler that globally suspends the runtime every 1ms to walk stacks and write them to the EventPipe.
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