120 lines
3.1 KiB
C++
120 lines
3.1 KiB
C++
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/*
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* Copyright (c) 1999-2008 Apple Inc. All Rights Reserved.
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*
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*/
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/*
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File: OSCond.cpp
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Contains: Implementation of OSCond class
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*/
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#include "OSCond.h"
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#include "OSMutex.h"
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#include "OSThread.h"
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#include "MyAssert.h"
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#if __PTHREADS_MUTEXES__
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#include <sys/time.h>
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#endif
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OSCond::OSCond()
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{
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#ifdef __Win32__
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fCondition = ::CreateEvent(NULL, FALSE, FALSE, NULL);
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Assert(fCondition != NULL);
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#elif __PTHREADS_MUTEXES__
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#if __MacOSX__
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int ret = pthread_cond_init(&fCondition, NULL);
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Assert(ret == 0);
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#else
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pthread_condattr_t cond_attr;
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pthread_condattr_init(&cond_attr);
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int ret = pthread_cond_init(&fCondition, &cond_attr);
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Assert(ret == 0);
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#endif
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#else
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fCondition = mycondition_alloc();
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Assert(fCondition != NULL);
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#endif
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}
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OSCond::~OSCond()
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{
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#ifdef __Win32__
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BOOL theErr = ::CloseHandle(fCondition);
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Assert(theErr == TRUE);
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#elif __PTHREADS_MUTEXES__
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pthread_cond_destroy(&fCondition);
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#else
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Assert(fCondition != NULL);
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mycondition_free(fCondition);
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#endif
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}
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#if __PTHREADS_MUTEXES__
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void OSCond::TimedWait(OSMutex* inMutex, SInt32 inTimeoutInMilSecs)
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{
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struct timespec ts;
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struct timeval tv;
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struct timezone tz;
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int sec, usec;
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//These platforms do refcounting manually, and wait will release the mutex,
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// so we need to update the counts here
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inMutex->fHolderCount--;
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inMutex->fHolder = 0;
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if (inTimeoutInMilSecs == 0)
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(void)pthread_cond_wait(&fCondition, &inMutex->fMutex);
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else
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{
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gettimeofday(&tv, &tz);
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sec = inTimeoutInMilSecs / 1000;
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inTimeoutInMilSecs = inTimeoutInMilSecs - (sec * 1000);
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Assert(inTimeoutInMilSecs < 1000);
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usec = inTimeoutInMilSecs * 1000;
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Assert(tv.tv_usec < 1000000);
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ts.tv_sec = tv.tv_sec + sec;
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ts.tv_nsec = (tv.tv_usec + usec) * 1000;
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Assert(ts.tv_nsec < 2000000000);
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if(ts.tv_nsec > 999999999)
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{
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ts.tv_sec++;
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ts.tv_nsec -= 1000000000;
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}
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(void)pthread_cond_timedwait(&fCondition, &inMutex->fMutex, &ts);
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}
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inMutex->fHolderCount++;
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inMutex->fHolder = pthread_self();
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}
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#endif
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