1 /*
   2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef OS_POSIX_OS_POSIX_INLINE_HPP
  26 #define OS_POSIX_OS_POSIX_INLINE_HPP
  27 
  28 #include "runtime/os.hpp"
  29 
  30 #ifdef SUPPORTS_CLOCK_MONOTONIC
  31 
  32 // Exported clock functionality
  33 
  34 inline bool os::Posix::supports_monotonic_clock() {
  35   return _clock_gettime != NULL;
  36 }
  37 
  38 inline int os::Posix::clock_gettime(clockid_t clock_id, struct timespec *tp) {
  39   return _clock_gettime != NULL ? _clock_gettime(clock_id, tp) : -1;
  40 }
  41 
  42 inline int os::Posix::clock_getres(clockid_t clock_id, struct timespec *tp) {
  43   return _clock_getres != NULL ? _clock_getres(clock_id, tp) : -1;
  44 }
  45 
  46 #endif // SUPPORTS_CLOCK_MONOTONIC
  47 
  48 // Platform Mutex/Monitor implementation
  49 
  50 inline void os::PlatformMutex::lock() {
  51   int status = pthread_mutex_lock(mutex());
  52   assert_status(status == 0, status, "mutex_lock");
  53 }
  54 
  55 inline void os::PlatformMutex::unlock() {
  56   int status = pthread_mutex_unlock(mutex());
  57   assert_status(status == 0, status, "mutex_unlock");
  58 }
  59 
  60 inline bool os::PlatformMutex::try_lock() {
  61   int status = pthread_mutex_trylock(mutex());
  62   assert_status(status == 0 || status == EBUSY, status, "mutex_trylock");
  63   return status == 0;
  64 }
  65 
  66 inline void os::PlatformMonitor::notify() {
  67   int status = pthread_cond_signal(cond());
  68   assert_status(status == 0, status, "cond_signal");
  69 }
  70 
  71 inline void os::PlatformMonitor::notify_all() {
  72   int status = pthread_cond_broadcast(cond());
  73   assert_status(status == 0, status, "cond_broadcast");
  74 }
  75 
  76 #endif // OS_POSIX_OS_POSIX_INLINE_HPP