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/*
* thread.c: A simple thread base class
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: thread.c,v 1.1 2010/08/18 21:27:14 richard Exp $
*
* This was taken from the VDR package, which was released under the GPL.
* Stripped down to make the PES parser happy
*/
#include "thread.h"
#include <unistd.h>
// --- cMutex ----------------------------------------------------------------
cMutex::cMutex(void)
{
lockingPid = 0;
locked = 0;
pthread_mutex_init(&mutex, NULL);
}
cMutex::~cMutex()
{
pthread_mutex_destroy(&mutex);
}
void cMutex::Lock(void)
{
if (getpid() != lockingPid || !locked) {
pthread_mutex_lock(&mutex);
lockingPid = getpid();
}
locked++;
}
void cMutex::Unlock(void)
{
if (!--locked) {
lockingPid = 0;
pthread_mutex_unlock(&mutex);
}
}
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