/* * Copyright (c) 2015, 2021, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. *
*/
#ifndef __APPLE__ // Use POSIX semaphores. # include "semaphore_posix.hpp"
#else // OS X doesn't support unnamed POSIX semaphores, so the implementation in os_posix.cpp can't be used. # include "memory/allocation.hpp" # include <mach/semaphore.h>
class OSXSemaphore : public CHeapObj<mtInternal>{
semaphore_t _semaphore;
NONCOPYABLE(OSXSemaphore);
public:
OSXSemaphore(uint value = 0);
~OSXSemaphore();
void signal(uint count = 1);
void wait();
bool trywait();
// wait until the given relative time elapses bool timedwait(int64_t millis);
};
typedef OSXSemaphore SemaphoreImpl;
#endif// __APPLE__
#endif// OS_BSD_SEMAPHORE_BSD_HPP
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