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c7b3292251
PR-URL: https://github.com/nodejs/node/pull/36139 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Myles Borins <myles.borins@gmail.com> Reviewed-By: Shelley Vohr <codebytere@gmail.com>
60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
// Copyright 2020 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef INCLUDE_CPPGC_DEFAULT_PLATFORM_H_
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#define INCLUDE_CPPGC_DEFAULT_PLATFORM_H_
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#include <memory>
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#include <vector>
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#include "cppgc/platform.h"
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#include "libplatform/libplatform.h"
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#include "v8config.h" // NOLINT(build/include_directory)
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namespace cppgc {
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/**
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* Platform provided by cppgc. Uses V8's DefaultPlatform provided by
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* libplatform internally. Exception: `GetForegroundTaskRunner()`, see below.
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*/
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class V8_EXPORT DefaultPlatform : public Platform {
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public:
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using IdleTaskSupport = v8::platform::IdleTaskSupport;
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explicit DefaultPlatform(
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int thread_pool_size = 0,
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IdleTaskSupport idle_task_support = IdleTaskSupport::kDisabled)
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: v8_platform_(v8::platform::NewDefaultPlatform(thread_pool_size,
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idle_task_support)) {}
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cppgc::PageAllocator* GetPageAllocator() override {
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return v8_platform_->GetPageAllocator();
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}
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double MonotonicallyIncreasingTime() override {
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return v8_platform_->MonotonicallyIncreasingTime();
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}
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std::shared_ptr<cppgc::TaskRunner> GetForegroundTaskRunner() override {
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// V8's default platform creates a new task runner when passed the
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// `v8::Isolate` pointer the first time. For non-default platforms this will
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// require getting the appropriate task runner.
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return v8_platform_->GetForegroundTaskRunner(kNoIsolate);
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}
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std::unique_ptr<cppgc::JobHandle> PostJob(
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cppgc::TaskPriority priority,
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std::unique_ptr<cppgc::JobTask> job_task) override {
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return v8_platform_->PostJob(priority, std::move(job_task));
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}
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protected:
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static constexpr v8::Isolate* kNoIsolate = nullptr;
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std::unique_ptr<v8::Platform> v8_platform_;
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};
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} // namespace cppgc
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#endif // INCLUDE_CPPGC_DEFAULT_PLATFORM_H_
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