src/hotspot/os/posix/os_posix.inline.hpp
author kbarrett
Tue, 19 Mar 2019 14:32:41 -0400
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8218975: Bug in macOSX kernel's pthread support Summary: Use freelist of pthread_mutex/condvar pairs on macOSX. Reviewed-by: tschatzl, dholmes, dcubed Contributed-by: kim.barrett@oracle.com, patricio.chilano.mateo@oracle.com
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/*
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 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef OS_POSIX_OS_POSIX_INLINE_HPP
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#define OS_POSIX_OS_POSIX_INLINE_HPP
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#include "runtime/os.hpp"
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#ifdef SUPPORTS_CLOCK_MONOTONIC
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// Exported clock functionality
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inline bool os::Posix::supports_monotonic_clock() {
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  return _clock_gettime != NULL;
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}
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inline int os::Posix::clock_gettime(clockid_t clock_id, struct timespec *tp) {
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  return _clock_gettime != NULL ? _clock_gettime(clock_id, tp) : -1;
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}
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inline int os::Posix::clock_getres(clockid_t clock_id, struct timespec *tp) {
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  return _clock_getres != NULL ? _clock_getres(clock_id, tp) : -1;
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}
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#endif // SUPPORTS_CLOCK_MONOTONIC
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#ifndef SOLARIS
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// Platform Monitor implementation
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inline void os::PlatformMonitor::lock() {
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  int status = pthread_mutex_lock(mutex());
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  assert_status(status == 0, status, "mutex_lock");
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}
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inline void os::PlatformMonitor::unlock() {
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  int status = pthread_mutex_unlock(mutex());
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  assert_status(status == 0, status, "mutex_unlock");
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}
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inline bool os::PlatformMonitor::try_lock() {
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  int status = pthread_mutex_trylock(mutex());
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  assert_status(status == 0 || status == EBUSY, status, "mutex_trylock");
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  return status == 0;
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}
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inline void os::PlatformMonitor::notify() {
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  int status = pthread_cond_signal(cond());
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  assert_status(status == 0, status, "cond_signal");
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}
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inline void os::PlatformMonitor::notify_all() {
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  int status = pthread_cond_broadcast(cond());
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  assert_status(status == 0, status, "cond_broadcast");
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}
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#endif // !SOLARIS
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#endif // OS_POSIX_OS_POSIX_INLINE_HPP