62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
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// Copyright (c) 2012 The Chromium 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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#ifndef BASE_THREADING_SEQUENCED_WORKER_POOL_UNITTEST_H_
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#define BASE_THREADING_SEQUENCED_WORKER_POOL_UNITTEST_H_
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#include <cstddef>
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#include <string>
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#include "base/basictypes.h"
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#include "base/callback.h"
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#include "base/compiler_specific.h"
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#include "base/memory/ref_counted.h"
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#include "base/synchronization/lock.h"
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#include "base/threading/sequenced_worker_pool.h"
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namespace base {
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class MessageLoop;
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// Wrapper around SequencedWorkerPool for testing that blocks destruction
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// until the pool is actually destroyed. This is so that a
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// SequencedWorkerPool from one test doesn't outlive its test and cause
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// strange races with other tests that touch global stuff (like histograms and
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// logging). However, this requires that nothing else on this thread holds a
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// ref to the pool when the SequencedWorkerPoolOwner is destroyed.
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class SequencedWorkerPoolOwner : public SequencedWorkerPool::TestingObserver {
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public:
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SequencedWorkerPoolOwner(size_t max_threads,
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const std::string& thread_name_prefix);
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virtual ~SequencedWorkerPoolOwner();
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// Don't change the returned pool's testing observer.
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const scoped_refptr<SequencedWorkerPool>& pool();
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// The given callback will be called on WillWaitForShutdown().
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void SetWillWaitForShutdownCallback(const Closure& callback);
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int has_work_call_count() const;
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private:
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// SequencedWorkerPool::TestingObserver implementation.
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virtual void OnHasWork() OVERRIDE;
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virtual void WillWaitForShutdown() OVERRIDE;
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virtual void OnDestruct() OVERRIDE;
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MessageLoop* const constructor_message_loop_;
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scoped_refptr<SequencedWorkerPool> pool_;
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Closure will_wait_for_shutdown_callback_;
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mutable Lock has_work_lock_;
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int has_work_call_count_;
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DISALLOW_COPY_AND_ASSIGN(SequencedWorkerPoolOwner);
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};
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} // namespace base
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#endif // BASE_THREADING_SEQUENCED_WORKER_POOL_UNITTEST_H_
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