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/*----------------------------------------------------------------------------
libtunepimp -- The MusicBrainz tagging library.
Let a thousand taggers bloom!
Copyright (C) Robert Kaye 2003
This file is part of libtunepimp.
libtunepimp is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
libtunepimp 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 for more details.
You should have received a copy of the GNU General Public License
along with libtunepimp; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
$Id: watchdog.cpp 1279 2004-04-21 23:57:57Z robert $
----------------------------------------------------------------------------*/
#ifdef WIN32
# if _MSC_VER == 1200
# pragma warning(disable:4786)
# endif
#else
# include <unistd.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <signal.h>
#include <time.h>
#ifndef WIN32
#include <unistd.h>
#endif
#include <errno.h>
#include <string.h>
#include "watchdog.h"
#include "tunepimp.h"
#define DB printf("%s:%d\n", __FILE__, __LINE__);
#ifndef WIN32
extern "C"
{
void handler(int sig)
{
signal(sig, handler);
pthread_exit(NULL);
}
}
#endif
//---------------------------------------------------------------------------
WatchdogThread::WatchdogThread(TunePimp *tunePimpArg) : Thread()
{
#ifndef WIN32
signal(SIGSEGV, handler);
signal(SIGBUS, handler);
signal(SIGFPE, handler);
#endif
tunePimp = tunePimpArg;
analyzerThread = NULL;
analyzerFile = -1;
exitThread = false;
sem = new Semaphore();
}
//---------------------------------------------------------------------------
WatchdogThread::~WatchdogThread(void)
{
if (!exitThread)
{
exitThread = true;
sem->signal();
join();
}
delete sem;
}
//---------------------------------------------------------------------------
void WatchdogThread::stop(void)
{
exitThread = true;
sem->signal();
join();
}
//---------------------------------------------------------------------------
void WatchdogThread::setAnalyzerThread(void *threadId)
{
analyzerThread = threadId;
}
//---------------------------------------------------------------------------
void WatchdogThread::setAnalyzerTask(int fileId)
{
mutex.acquire();
analyzerFile = fileId;
mutex.release();
}
//---------------------------------------------------------------------------
void WatchdogThread::threadMain(void)
{
void *thread;
int file;
for(; !exitThread;)
{
// Wait for 1/10th of a second.
if (!sem->timedWait(100))
{
mutex.acquire();
thread = analyzerThread;
file = analyzerFile;
mutex.release();
if (thread == NULL)
continue;
if (!isThreadAlive(thread))
{
printf("Analyzer thread died!!!\n");
mutex.acquire();
analyzerThread = NULL;
analyzerFile = -1;
mutex.release();
tunePimp->analyzerDied(file);
}
}
}
}
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