7deb682187
This a step towards using CompilerDispatcher in parallel parsing. BUG=v8:6093 Change-Id: I7c0dc0a5f5b25652a8aa98c94b1e069c1f081a5b Reviewed-on: https://chromium-review.googlesource.com/473106 Reviewed-by: Jochen Eisinger <jochen@chromium.org> Commit-Queue: Wiktor Garbacz <wiktorg@google.com> Cr-Commit-Position: refs/heads/master@{#44570}
97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
// 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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#include "src/base/atomic-utils.h"
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#include "src/base/platform/semaphore.h"
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#include "src/compilation-info.h"
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#include "src/compiler.h"
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#include "src/handles.h"
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#include "src/isolate.h"
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#include "src/objects-inl.h"
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#include "src/parsing/parse-info.h"
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#include "test/unittests/compiler-dispatcher/compiler-dispatcher-helper.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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typedef TestWithContext OptimizingCompileDispatcherTest;
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namespace {
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class BlockingCompilationJob : public CompilationJob {
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public:
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BlockingCompilationJob(Isolate* isolate, Handle<JSFunction> function)
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: CompilationJob(isolate, &info_, "BlockingCompilationJob",
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State::kReadyToExecute),
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parse_info_(handle(function->shared())),
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info_(parse_info_.zone(), &parse_info_, function->GetIsolate(),
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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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// CompilationJob implementation.
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Status PrepareJobImpl() override {
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UNREACHABLE();
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return FAILED;
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}
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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() override { return SUCCEEDED; }
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private:
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ParseInfo parse_info_;
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CompilationInfo 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 = Handle<JSFunction>::cast(test::RunJS(
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isolate(), "function f() { function g() {}; return g;}; f();"));
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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(OptimizingCompileDispatcher::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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