Since https://dawn-review.googlesource.com/c/dawn/+/120940, callbacks
will be deferred to be executed in next device.APITick() instead of
immediately.
However, if the device is already destroyed (last ref dropped),
user/wire_server has no chance to call device.APITick() anymore, leading
to the callbacks waiting in queue forever.
This is also possibly the cause of memory leaks in cluserfuzz tests.
This CL attempt to fix it by implementing Instance::ProcessEvents():
In this method, every created device will invoke APITick() even if it is
already lost/externally released.
bug: chromium:1422507
bug: dawn:752
Change-Id: Iec69ad3b547a7e88c6e1a2225b13ad060a501a4f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/123420
Commit-Queue: Quyen Le <lehoangquyen@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>
Currently in the middle of some functions, we execute callbacks
immediately such as inside Buffer::APIMapAsync(), Device::HandleError()
or Queue::Submit().
Firstly, this has risks. The functions might be in a middle of modifying
internal states. By triggering callbacks, users might call API
functions again which could further modify the internal states
unexpectedly or access the states in an inconsistent way.
Secondly, upcoming thread safe API which locks the public functions with
a mutex might encounter deadlock. Because callbacks might cause
re-entrances which would unexpectedly lock the public function again.
This CL attempts to limit number of functions that are allowed to
trigger callbacks. Other functions that want to trigger callbacks will
instead enqueue a request to execute callbacks in the next
Device::APITick() call.
Currently the functions that will be allowed to trigger callbacks are:
- Device::WillDropLastExternalRef()
- Device::APITick()
- Device::APISetLoggingCallback()
- Device::APISetUncapturedErrorCallback()
- Device::APISetDeviceLostCallback()
Bug: dawn:1672
Change-Id: Iabca00f1b6f8f69eb5e966ffaa43dda5ae20fa8b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/120940
Commit-Queue: Quyen Le <lehoangquyen@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Currently Queue::SubmitImpl() may cause two queue submissions, one is
because of Tick() call which will submit pending commands if there are.
The other one is after converting frontend commands to backend command
buffer. Queue::SubmitImpl() will submit converted commands. However
usually queue submissions are expensive, so merge those two queue
submissions into one by not calling Tick() before converting frontend
commands, so pending commands and recorded commands can be submitted
together. After that, we call Tick() to resolve callbacks and perform
bookkeeping operations (deallocating memory for passed operations,
etc).
Bug: b/265151060
Change-Id: Ia171771bcc1061dc599a58aa6d213a645696fb75
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/116929
Auto-Submit: Peng Huang <penghuang@chromium.org>
Kokoro: Ben Clayton <bclayton@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Peng Huang <penghuang@chromium.org>
This CL converts the @stage(...) in src/dawn/test to use the new
@compute, @vertex, or @fragment syntax.
Bug: tint:1503
Change-Id: I51feaceebe8b3ba03a95ddd93367c76d2b24a4ae
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/92482
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Update child objects to ref the device. This allows them to outlive
the device, making the implementation more robust such that it is OK
to drop the device before other objects.
Dropping the last external reference to the device is currently an
implicit device.destroy(). This destruction breaks possible ref cycles
where the device refs internal objects which have a back ref to the
device.
Bug: dawn:1164
Change-Id: I02d8e32a21dcc5f05e531bd690baac4a234b5f6b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/90360
Reviewed-by: Loko Kung <lokokung@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
