| /* |
| * Copyright (c) 2015, 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 OS_BSD_VM_SEMAPHORE_BSD_HPP |
| #define OS_BSD_VM_SEMAPHORE_BSD_HPP |
| |
| #ifndef __APPLE__ |
| // Use POSIX semaphores. |
| # include "semaphore_posix.hpp" |
| |
| #else |
| // OS X doesn't support unamed 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; |
| |
| // Prevent copying and assignment. |
| OSXSemaphore(const OSXSemaphore&); |
| OSXSemaphore& operator=(const OSXSemaphore&); |
| |
| public: |
| OSXSemaphore(uint value = 0); |
| ~OSXSemaphore(); |
| |
| void signal(uint count = 1); |
| |
| void wait(); |
| |
| bool trywait(); |
| bool timedwait(unsigned int sec, int nsec); |
| |
| private: |
| static jlong currenttime(); |
| }; |
| |
| typedef OSXSemaphore SemaphoreImpl; |
| |
| #endif // __APPLE__ |
| |
| #endif // OS_BSD_VM_SEMAPHORE_BSD_HPP |