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50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
// Copyright 2011 The Chromium Authors
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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 BASE_TEST_THREAD_TEST_HELPER_H_
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#define BASE_TEST_THREAD_TEST_HELPER_H_
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#include "base/memory/ref_counted.h"
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#include "base/synchronization/waitable_event.h"
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#include "base/task/sequenced_task_runner.h"
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namespace base {
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// Helper class that executes code on a given target sequence/thread while
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// blocking on the invoking sequence/thread. To use, derive from this class and
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// overwrite RunTest. An alternative use of this class is to use it directly. It
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// will then block until all pending tasks on a given sequence/thread have been
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// executed.
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class ThreadTestHelper : public RefCountedThreadSafe<ThreadTestHelper> {
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public:
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explicit ThreadTestHelper(scoped_refptr<SequencedTaskRunner> target_sequence);
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ThreadTestHelper(const ThreadTestHelper&) = delete;
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ThreadTestHelper& operator=(const ThreadTestHelper&) = delete;
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// True if RunTest() was successfully executed on the target sequence.
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[[nodiscard]] bool Run();
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virtual void RunTest();
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protected:
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friend class RefCountedThreadSafe<ThreadTestHelper>;
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virtual ~ThreadTestHelper();
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// Use this method to store the result of RunTest().
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void set_test_result(bool test_result) { test_result_ = test_result; }
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private:
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void RunOnSequence();
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bool test_result_;
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scoped_refptr<SequencedTaskRunner> target_sequence_;
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WaitableEvent done_event_;
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};
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} // namespace base
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#endif // BASE_TEST_THREAD_TEST_HELPER_H_
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