mirror of
https://bitbucket.org/chromiumembedded/cef
synced 2024-12-12 17:46:04 +01:00
b76badd958
Also perform related C++ cleanup:
- Use =default instead of {} for default implementations of
constructors/destructors.
- Replace typedef with using.
88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
// Copyright (c) 2011 Google Inc. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the name Chromium Embedded
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// Framework nor the names of its contributors may be used to endorse
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// or promote products derived from this software without specific prior
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// written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Do not include this header file directly. Use base/cef_lock.h instead.
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#ifndef CEF_INCLUDE_BASE_INTERNAL_CEF_LOCK_IMPL_H_
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#define CEF_INCLUDE_BASE_INTERNAL_CEF_LOCK_IMPL_H_
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#include "include/base/cef_build.h"
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#if defined(OS_WIN)
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#include <windows.h>
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#elif defined(OS_POSIX)
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#include <pthread.h>
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#endif
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namespace base {
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namespace cef_internal {
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// This class implements the underlying platform-specific spin-lock mechanism
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// used for the Lock class. Most users should not use LockImpl directly, but
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// should instead use Lock.
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class LockImpl {
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public:
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#if defined(OS_WIN)
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typedef CRITICAL_SECTION NativeHandle;
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#elif defined(OS_POSIX)
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typedef pthread_mutex_t NativeHandle;
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#endif
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LockImpl();
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LockImpl(const LockImpl&) = delete;
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LockImpl& operator=(const LockImpl&) = delete;
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~LockImpl();
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// If the lock is not held, take it and return true. If the lock is already
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// held by something else, immediately return false.
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bool Try();
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// Take the lock, blocking until it is available if necessary.
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void Lock();
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// Release the lock. This must only be called by the lock's holder: after
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// a successful call to Try, or a call to Lock.
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void Unlock();
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// Return the native underlying lock.
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// TODO(awalker): refactor lock and condition variables so that this is
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// unnecessary.
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NativeHandle* native_handle() { return &native_handle_; }
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private:
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NativeHandle native_handle_;
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};
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} // namespace cef_internal
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} // namespace base
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#endif // CEF_INCLUDE_BASE_INTERNAL_CEF_LOCK_IMPL_H_
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