Refactor TimeBase to post tasks. Workers to use real Idle tasks.

Source/core/workers/WorkerThreadTest.cpp

+// Copyright 2015 The Chromium Authors. All rights reserved.

[Sami, 2015/04/09 10:52:29]

If we want to make this patch smaller, landing this test scaffolding first is
one option.

[alex clarke (OOO till 29th), 2015/04/10 15:29:39]

Acknowledged.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "core/workers/WorkerThread.h"
+
+#include "bindings/core/v8/ScriptWrappable.h"
+#include "core/inspector/ConsoleMessage.h"
+#include "core/workers/SharedWorkerGlobalScope.h"
+#include "core/workers/SharedWorkerThread.h"
+#include "core/workers/WorkerGlobalScope.h"
+#include "core/workers/WorkerReportingProxy.h"
+#include "core/workers/WorkerThreadStartupData.h"
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+using testing::_;
+using testing::Invoke;
+using testing::Return;
+
+namespace blink {
+
+namespace {
+class MockWorkerLoaderProxy : public WorkerLoaderProxy {
+public:
+    MockWorkerLoaderProxy() : WorkerLoaderProxy(nullptr) { }
+    ~MockWorkerLoaderProxy() override { }
+
+    MOCK_METHOD1(postTaskToLoader, void(PassOwnPtr<ExecutionContextTask>));
+    MOCK_METHOD1(postTaskToWorkerGlobalScope, bool(PassOwnPtr<ExecutionContextTask>));
+};
+
+class MockWorkerReportingProxy : public WorkerReportingProxy {
+public:
+    MockWorkerReportingProxy() { }
+    ~MockWorkerReportingProxy() override { }
+
+    MOCK_METHOD5(reportException, void(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL, int exceptionId));
+    MOCK_METHOD1(reportConsoleMessage, void(PassRefPtrWillBeRawPtr<ConsoleMessage>));
+    MOCK_METHOD1(postMessageToPageInspector, void(const String&));
+    MOCK_METHOD0(postWorkerConsoleAgentEnabled, void());
+    MOCK_METHOD1(didEvaluateWorkerScript, void(bool success));
+    MOCK_METHOD1(workerGlobalScopeStarted, void(WorkerGlobalScope*));
+    MOCK_METHOD0(workerGlobalScopeClosed, void());
+    MOCK_METHOD0(workerThreadTerminated, void());
+    MOCK_METHOD0(willDestroyWorkerGlobalScope, void());
+};
+
+class FakeWorkerGlobalScope : public WorkerGlobalScope {
+public:
+    typedef WorkerGlobalScope Base;
+
+    FakeWorkerGlobalScope(const KURL& url, const String& userAgent, WorkerThread* thread, const SecurityOrigin* starterOrigin, PassOwnPtrWillBeRawPtr<WorkerClients> workerClients)
+        : WorkerGlobalScope(url, userAgent, thread, monotonicallyIncreasingTime(), starterOrigin, workerClients)
+    {
+    }
+
+    ~FakeWorkerGlobalScope() override
+    {
+    }
+
+    virtual bool isSharedWorkerGlobalScope() const override { return true; }
+
+    // EventTarget
+    virtual const AtomicString& interfaceName() const override
+    {
+        return EventTargetNames::SharedWorkerGlobalScope;
+    }
+
+    virtual void logExceptionToConsole(const String&, int , const String&, int, int, PassRefPtrWillBeRawPtr<ScriptCallStack>) override
+    {
+    }
+
+    // Setters/Getters for attributes in SharedWorkerGlobalScope.idl
+    DEFINE_ATTRIBUTE_EVENT_LISTENER(connect);
+    String name() const { return "FakeWorkerGlobalScope"; }
+
+    DECLARE_VIRTUAL_TRACE();
+};
+
+DEFINE_TRACE(FakeWorkerGlobalScope)
+{
+    WorkerGlobalScope::trace(visitor);
+}
+
+class WorkerThreadForTest : public WorkerThread {
+public:
+    WorkerThreadForTest(
+        WorkerLoaderProxy* mockWorkerLoaderProxy,
+        WorkerReportingProxy& mockWorkerReportingProxy,
+        PassOwnPtrWillBeRawPtr<WorkerThreadStartupData> workerThreadStartupData)
+        : WorkerThread(mockWorkerLoaderProxy, mockWorkerReportingProxy, workerThreadStartupData)
+    {
+    }
+
+    ~WorkerThreadForTest() override { }
+
+    using WorkerThread::threadForTesting;
+    using WorkerThread::setMinQuietPeriodBeforeDoingIdleGcForTesting;
+
+    MOCK_METHOD1(doIdleGc, bool(double deadlineSeconds));
+
+    PassRefPtrWillBeRawPtr<WorkerGlobalScope> createWorkerGlobalScope(PassOwnPtr<WorkerThreadStartupData> startupData) override
+    {
+        return adoptRefWillBeNoop(new FakeWorkerGlobalScope(startupData->m_scriptURL, startupData->m_userAgent, this, startupData->m_starterOrigin, startupData->m_workerClients.release()));
+    }
+};
+
+class WakeupTask : public WebThread::Task {
+public:
+    WakeupTask() { }
+
+    ~WakeupTask() override { }
+
+    void run() override { }
+};
+
+class PostDelayedWakeupTask : public WebThread::Task {
+public:
+    PostDelayedWakeupTask(WebThreadSupportingGC* gc, long long delay) : m_gc(gc), m_delay(delay) { }
+
+    ~PostDelayedWakeupTask() override { }
+
+    void run() override
+    {
+        m_gc->postDelayedTask(FROM_HERE, new WakeupTask(), m_delay);
+    }
+
+    WebThreadSupportingGC* m_gc;
+    long long m_delay;
+};
+
+} // namespace
+
+class WorkerThreadTest : public testing::Test {
+public:
+    void SetUp() override
+    {
+        m_mockWorkerLoaderProxy = new MockWorkerLoaderProxy();
+        m_mockWorkerReportingProxy = adoptPtr(new MockWorkerReportingProxy());
+        m_securityOrigin = SecurityOrigin::create(KURL(ParsedURLString, "http://fake.url/"));
+        m_workerThread = adoptRef(new WorkerThreadForTest(
+            m_mockWorkerLoaderProxy.get(),
+            *m_mockWorkerReportingProxy,
+            WorkerThreadStartupData::create(
+                KURL(ParsedURLString, "http://fake.url/"),
+                "fake user agent",
+                "//fake source code",
+                nullptr,
+                DontPauseWorkerGlobalScopeOnStart,
+                "contentSecurityPolicy",
+                ContentSecurityPolicyHeaderTypeReport,
+                m_securityOrigin.get(),
+                WorkerClients::create(),
+                V8CacheOptionsDefault)));
+    }
+
+    RefPtr<SecurityOrigin> m_securityOrigin;
+    RefPtr<MockWorkerLoaderProxy> m_mockWorkerLoaderProxy;
+    OwnPtr<MockWorkerReportingProxy> m_mockWorkerReportingProxy;
+    RefPtr<WorkerThreadForTest> m_workerThread;
+};
+
+TEST_F(WorkerThreadTest, GcOccursWhileIdle)
+{
+    bool gcDone = false;
+
+    ON_CALL(*m_workerThread, doIdleGc(_)).WillByDefault(Invoke(
+        [&gcDone](double)
+        {
+            gcDone = true;
+            return false;
+        }));
+
+    EXPECT_CALL(*m_workerThread, doIdleGc(_)).Times(1);
+    EXPECT_CALL(*m_mockWorkerReportingProxy, workerGlobalScopeStarted(_)).Times(1);

[Sami, 2015/04/09 10:52:29]

Could these be moved to a helper setup function? They don't seem related to idle
gc.

[alex clarke (OOO till 29th), 2015/04/10 15:29:38]

Done.

+    EXPECT_CALL(*m_mockWorkerReportingProxy, didEvaluateWorkerScript(true)).Times(1);
+    EXPECT_CALL(*m_mockWorkerReportingProxy, workerThreadTerminated()).Times(1);
+    EXPECT_CALL(*m_mockWorkerReportingProxy, willDestroyWorkerGlobalScope()).Times(1);
+
+    m_workerThread->setMinQuietPeriodBeforeDoingIdleGcForTesting(100ul);
+    m_workerThread->start();
+    WebThreadSupportingGC* thread = m_workerThread->threadForTesting();
+
+    // The idle task will get posted on an after wake up queue, so we need another task
+    // posted at the right time to wake the system up.  We don't know the right delay here
+    // since the thread can take a variable length of time to be responsive, however this
+    // isn't a problem when posting a delayed task from within a task on the worker thread.
+    thread->postTask(FROM_HERE, new PostDelayedWakeupTask(thread, 110ul));
+
+    while (!gcDone)
+        Platform::current()->yieldCurrentThread();
+
+    m_workerThread->terminateAndWait();
+};
+
+} // namespace blink