tree 89aede56830a9ae2f059b957c984c11217167189
parent 205c0158db5b15a6a1b27eacb9c25a8862c90561
author Jiawei Shao <jiawei.shao@intel.com> 1730337756 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1730337756 +0000

Destroy `mStagingBuffer` immediately in `BufferBase::Unmap()`

When calling `BufferBase::Unmap()` on the buffer created with
`mappedAtCreation == true` we can destroy the internal staging
buffer `mStagingBuffer` immediately after recording the copy
command instead of putting it into `DynamicUploader` and
destroying it in the next completed serial.

It is because the lifecycle of `mStagingBuffer` is the same
as the current pending commands and the pending command serial,
so it can be safely destroyed when the execution of the
pending commands are completed.

With this patch `mStagingBuffer` can be destroyed one serial
number earlier than current implementation.

Bug: chromium:42242066
Test: dawn_end2end_tests

Change-Id: I9ff15ab0c20a374b9065897a64a2b5e0a9e03214
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/212894
Reviewed-by: Loko Kung <lokokung@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>