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Reland "Add a per-thread proc table using thread local storage"

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This is a reland of b04a92f01b
with the deletion of a duplicate exported function in dawn_wire that
was causing a compilation failure on Windows.

Original change's description:
> Add a per-thread proc table using thread local storage
>
> In situations where both dawn_wire and dawn_native are used on separate
> threads (Chrome with --single-process or --in-process-gpu), it's
> desirable to have a per-thread proc table so that the WebGPU C++ API can
> still be used. This eliminates classes of bugs with manual
> reference/release errors.
>
> This also changes many of the GetProcs functions to return const
> references to the static proc tables known at compile time, instead of a
> copy.
>
> Bug: none
> Change-Id: I8775bb715b312dd9476a1903fbd797d4b1302614
> Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/29240
> Reviewed-by: Stephen White <senorblanco@chromium.org>
> Reviewed-by: Corentin Wallez <cwallez@chromium.org>
> Commit-Queue: Austin Eng <enga@chromium.org>

Bug: none
Change-Id: Id90e5372132cd93a2f8631c8185d0e71b01bc1af
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/29443
Commit-Queue: Austin Eng <enga@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Stephen White <senorblanco@chromium.org>
This commit is contained in:
Austin Eng
2020-10-06 16:13:42 +00:00
committed by Commit Bot service account
parent e85652b61d
commit 16e01affcb
20 changed files with 247 additions and 42 deletions
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33
src/include/dawn/dawn_thread_dispatch_proc.h Normal file
View File

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// Copyright 2020 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef DAWN_DAWN_THREAD_DISPATCH_PROC_H_
#define DAWN_DAWN_THREAD_DISPATCH_PROC_H_
#include "dawn/dawn_proc.h"
#ifdef __cplusplus
extern "C" {
#endif
// Call dawnProcSetProcs(&dawnThreadDispatchProcTable) and then use dawnProcSetPerThreadProcs
// to set per-thread procs.
WGPU_EXPORT extern DawnProcTable dawnThreadDispatchProcTable;
WGPU_EXPORT void dawnProcSetPerThreadProcs(const DawnProcTable* procs);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // DAWN_DAWN_THREAD_DISPATCH_PROC_H_