51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
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// Copyright 2021 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "dawn_platform/WorkerThread.h"
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#include <future>
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#include "common/Assert.h"
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namespace {
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class AsyncWaitableEvent final : public dawn_platform::WaitableEvent {
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public:
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explicit AsyncWaitableEvent(std::function<void()> func) {
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mFuture = std::async(std::launch::async, func);
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}
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virtual ~AsyncWaitableEvent() override {
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ASSERT(IsComplete());
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}
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void Wait() override {
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ASSERT(mFuture.valid());
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mFuture.wait();
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}
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bool IsComplete() override {
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ASSERT(mFuture.valid());
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return mFuture.wait_for(std::chrono::seconds(0)) == std::future_status::ready;
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}
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private:
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std::future<void> mFuture;
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};
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} // anonymous namespace
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std::unique_ptr<dawn_platform::WaitableEvent> AsyncWorkerThreadPool::PostWorkerTask(
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dawn_platform::PostWorkerTaskCallback callback,
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void* userdata) {
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std::function<void()> doTask = [callback, userdata]() { callback(userdata); };
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return std::make_unique<AsyncWaitableEvent>(doTask);
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}
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