2016-09-30 15:52:31 +00:00
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// Copyright 2016 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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#include "test/inspector/task-runner.h"
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2021-08-23 13:01:06 +00:00
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#include "include/v8-exception.h"
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#include "include/v8-local-handle.h"
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#include "include/v8-primitive.h"
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2020-08-14 10:10:38 +00:00
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#include "src/flags/flags.h"
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2022-07-18 13:30:02 +00:00
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#include "src/init/v8.h"
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#include "src/libplatform/default-platform.h"
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#include "src/utils/locked-queue-inl.h"
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2020-08-14 10:10:38 +00:00
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2016-09-30 15:52:31 +00:00
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#if !defined(_WIN32) && !defined(_WIN64)
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2021-04-29 16:54:13 +00:00
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#include <unistd.h>
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#endif // !defined(_WIN32) && !defined(_WIN64)
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2016-09-30 15:52:31 +00:00
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2020-10-27 13:52:22 +00:00
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namespace v8 {
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namespace internal {
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2016-09-30 15:52:31 +00:00
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namespace {
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void ReportUncaughtException(v8::Isolate* isolate,
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const v8::TryCatch& try_catch) {
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CHECK(try_catch.HasCaught());
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v8::HandleScope handle_scope(isolate);
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2017-08-24 21:49:48 +00:00
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std::string message =
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*v8::String::Utf8Value(isolate, try_catch.Message()->Get());
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2017-05-18 23:11:20 +00:00
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int line = try_catch.Message()
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->GetLineNumber(isolate->GetCurrentContext())
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.FromJust();
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2017-08-24 21:49:48 +00:00
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std::string source_line = *v8::String::Utf8Value(
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isolate, try_catch.Message()
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->GetSourceLine(isolate->GetCurrentContext())
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.ToLocalChecked());
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2020-11-09 14:18:44 +00:00
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fprintf(stderr, "Unhandled exception: %s @%s[%d]\n", message.data(),
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2017-05-18 23:11:20 +00:00
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source_line.data(), line);
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2016-09-30 15:52:31 +00:00
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}
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} // namespace
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2021-08-24 13:00:06 +00:00
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TaskRunner::TaskRunner(
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InspectorIsolateData::SetupGlobalTasks setup_global_tasks,
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CatchExceptions catch_exceptions, v8::base::Semaphore* ready_semaphore,
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v8::StartupData* startup_data, WithInspector with_inspector)
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2017-05-16 23:14:46 +00:00
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: Thread(Options("Task Runner")),
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setup_global_tasks_(std::move(setup_global_tasks)),
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startup_data_(startup_data),
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2017-05-22 20:46:42 +00:00
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with_inspector_(with_inspector),
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2017-05-16 23:14:46 +00:00
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catch_exceptions_(catch_exceptions),
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ready_semaphore_(ready_semaphore),
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data_(nullptr),
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process_queue_semaphore_(0),
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2018-07-11 16:37:32 +00:00
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nested_loop_count_(0),
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is_terminated_(0) {
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2019-07-29 13:09:02 +00:00
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CHECK(Start());
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2016-09-30 15:52:31 +00:00
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}
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2021-03-26 13:10:54 +00:00
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TaskRunner::~TaskRunner() {}
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2017-05-16 23:14:46 +00:00
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2016-09-30 15:52:31 +00:00
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void TaskRunner::Run() {
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data_.reset(new InspectorIsolateData(this, std::move(setup_global_tasks_),
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startup_data_, with_inspector_));
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if (ready_semaphore_) ready_semaphore_->Signal();
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2016-09-30 15:52:31 +00:00
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RunMessageLoop(false);
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}
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void TaskRunner::RunMessageLoop(bool only_protocol) {
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int loop_number = ++nested_loop_count_;
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while (nested_loop_count_ == loop_number && !is_terminated_) {
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2020-11-05 16:15:32 +00:00
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std::unique_ptr<TaskRunner::Task> task = GetNext(only_protocol);
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2016-10-19 02:04:34 +00:00
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if (!task) return;
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2017-05-16 23:14:46 +00:00
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v8::Isolate::Scope isolate_scope(isolate());
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2020-11-12 12:57:48 +00:00
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v8::TryCatch try_catch(isolate());
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if (catch_exceptions_ == kStandardPropagateUncaughtExceptions) {
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try_catch.SetVerbose(true);
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2016-09-30 15:52:31 +00:00
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}
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2020-11-12 12:57:48 +00:00
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task->Run(data_.get());
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if (catch_exceptions_ == kFailOnUncaughtExceptions &&
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try_catch.HasCaught()) {
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ReportUncaughtException(isolate(), try_catch);
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base::OS::ExitProcess(0);
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}
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try_catch.Reset();
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2020-11-05 16:15:32 +00:00
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task.reset();
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2020-08-14 10:10:38 +00:00
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// Also pump isolate's foreground task queue to ensure progress.
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// This can be removed once https://crbug.com/v8/10747 is fixed.
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// TODO(10748): Enable --stress-incremental-marking after the existing
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// tests are fixed.
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if (!i::FLAG_stress_incremental_marking) {
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while (v8::platform::PumpMessageLoop(
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2020-11-30 13:45:16 +00:00
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v8::internal::V8::GetCurrentPlatform(), isolate(),
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isolate()->HasPendingBackgroundTasks()
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? platform::MessageLoopBehavior::kWaitForWork
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: platform::MessageLoopBehavior::kDoNotWait)) {
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2020-08-14 10:10:38 +00:00
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}
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}
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2016-09-30 15:52:31 +00:00
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}
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}
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2020-12-24 10:08:09 +00:00
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static void RunMessageLoopInInterrupt(v8::Isolate* isolate, void* task_runner) {
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TaskRunner* runner = reinterpret_cast<TaskRunner*>(task_runner);
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runner->RunMessageLoop(true);
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}
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void TaskRunner::InterruptForMessages() {
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isolate()->RequestInterrupt(&RunMessageLoopInInterrupt, this);
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}
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2016-09-30 15:52:31 +00:00
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void TaskRunner::QuitMessageLoop() {
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2017-09-25 10:50:12 +00:00
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DCHECK_LT(0, nested_loop_count_);
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2016-09-30 15:52:31 +00:00
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--nested_loop_count_;
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}
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2020-11-05 16:15:32 +00:00
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void TaskRunner::Append(std::unique_ptr<Task> task) {
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queue_.Enqueue(std::move(task));
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2016-09-30 15:52:31 +00:00
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process_queue_semaphore_.Signal();
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}
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2016-10-19 02:04:34 +00:00
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void TaskRunner::Terminate() {
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2018-07-11 16:37:32 +00:00
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is_terminated_++;
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2021-01-11 16:07:23 +00:00
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isolate()->TerminateExecution();
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2016-10-19 02:04:34 +00:00
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process_queue_semaphore_.Signal();
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}
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2020-11-05 16:15:32 +00:00
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std::unique_ptr<TaskRunner::Task> TaskRunner::GetNext(bool only_protocol) {
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2016-09-30 15:52:31 +00:00
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for (;;) {
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2018-07-11 16:37:32 +00:00
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if (is_terminated_) return nullptr;
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2016-09-30 15:52:31 +00:00
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if (only_protocol) {
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2020-11-05 16:15:32 +00:00
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std::unique_ptr<Task> task;
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if (queue_.Dequeue(&task)) {
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2017-05-22 20:46:42 +00:00
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if (task->is_priority_task()) return task;
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2020-11-05 16:16:29 +00:00
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deferred_queue_.Enqueue(std::move(task));
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2016-09-30 15:52:31 +00:00
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}
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} else {
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2020-11-05 16:15:32 +00:00
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std::unique_ptr<Task> task;
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2020-11-05 16:16:29 +00:00
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if (deferred_queue_.Dequeue(&task)) return task;
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2016-09-30 15:52:31 +00:00
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if (queue_.Dequeue(&task)) return task;
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}
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process_queue_semaphore_.Wait();
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}
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}
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2020-10-27 13:52:22 +00:00
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} // namespace internal
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} // namespace v8
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