2017-01-30 19:27:00 +00:00
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// Copyright 2017 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 "src/compiler-dispatcher/optimizing-compile-dispatcher.h"
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2019-05-17 12:13:44 +00:00
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#include "src/api/api-inl.h"
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2017-01-30 19:27:00 +00:00
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#include "src/base/atomic-utils.h"
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#include "src/base/platform/semaphore.h"
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2019-05-21 09:30:15 +00:00
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#include "src/codegen/compiler.h"
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#include "src/codegen/optimized-compilation-info.h"
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2019-05-22 07:55:37 +00:00
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#include "src/execution/isolate.h"
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2017-01-30 19:27:00 +00:00
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#include "src/handles.h"
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#include "src/objects-inl.h"
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#include "src/parsing/parse-info.h"
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2017-04-18 14:01:12 +00:00
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#include "test/unittests/test-helpers.h"
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#include "test/unittests/test-utils.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace v8 {
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namespace internal {
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2017-11-13 12:04:57 +00:00
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typedef TestWithNativeContext OptimizingCompileDispatcherTest;
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namespace {
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2018-04-04 20:30:34 +00:00
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class BlockingCompilationJob : public OptimizedCompilationJob {
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public:
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BlockingCompilationJob(Isolate* isolate, Handle<JSFunction> function)
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: OptimizedCompilationJob(isolate->stack_guard()->real_climit(), &info_,
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"BlockingCompilationJob",
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State::kReadyToExecute),
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shared_(function->shared(), isolate),
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zone_(isolate->allocator(), ZONE_NAME),
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info_(&zone_, isolate, shared_, function),
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blocking_(false),
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semaphore_(0) {}
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~BlockingCompilationJob() override = default;
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bool IsBlocking() const { return blocking_.Value(); }
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void Signal() { semaphore_.Signal(); }
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2018-04-04 20:30:34 +00:00
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// OptimiziedCompilationJob implementation.
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2017-11-15 14:36:57 +00:00
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Status PrepareJobImpl(Isolate* isolate) override { UNREACHABLE(); }
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Status ExecuteJobImpl() override {
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blocking_.SetValue(true);
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semaphore_.Wait();
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blocking_.SetValue(false);
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return SUCCEEDED;
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}
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Status FinalizeJobImpl(Isolate* isolate) override { return SUCCEEDED; }
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private:
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2017-07-21 09:32:32 +00:00
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Handle<SharedFunctionInfo> shared_;
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Zone zone_;
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OptimizedCompilationInfo info_;
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base::AtomicValue<bool> blocking_;
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base::Semaphore semaphore_;
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DISALLOW_COPY_AND_ASSIGN(BlockingCompilationJob);
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};
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} // namespace
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TEST_F(OptimizingCompileDispatcherTest, Construct) {
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OptimizingCompileDispatcher dispatcher(i_isolate());
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ASSERT_TRUE(OptimizingCompileDispatcher::Enabled());
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ASSERT_TRUE(dispatcher.IsQueueAvailable());
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}
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TEST_F(OptimizingCompileDispatcherTest, NonBlockingFlush) {
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Handle<JSFunction> fun =
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RunJS<JSFunction>("function f() { function g() {}; return g;}; f();");
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2018-11-30 13:53:39 +00:00
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IsCompiledScope is_compiled_scope;
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ASSERT_TRUE(
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Compiler::Compile(fun, Compiler::CLEAR_EXCEPTION, &is_compiled_scope));
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BlockingCompilationJob* job = new BlockingCompilationJob(i_isolate(), fun);
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OptimizingCompileDispatcher dispatcher(i_isolate());
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ASSERT_TRUE(OptimizingCompileDispatcher::Enabled());
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ASSERT_TRUE(dispatcher.IsQueueAvailable());
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dispatcher.QueueForOptimization(job);
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// Busy-wait for the job to run on a background thread.
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while (!job->IsBlocking()) {
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}
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// Should not block.
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dispatcher.Flush(BlockingBehavior::kDontBlock);
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// Unblock the job & finish.
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job->Signal();
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dispatcher.Stop();
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}
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} // namespace internal
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} // namespace v8
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