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/* $Id: Thread.c,v 1.12 2004/03/04 17:57:17 titer Exp $
This file is part of the HandBrake source code.
Homepage: <http://handbrake.m0k.org/>.
It may be used under the terms of the GNU General Public License. */
#include "Thread.h"
/**********************************************************************
* HBThread implementation
**********************************************************************/
struct HBThread
{
/* User-friendly name */
char * name;
/* HB_(LOW|NORMAL)_PRIORITY */
int priority;
/* Thread function and argument */
void (*function) ( void * );
void * arg;
/* OS-specific thread id */
#if defined( HB_BEOS )
int thread;
#elif defined( HB_MACOSX ) || defined( HB_LINUX )
pthread_t thread;
#elif defined( HB_CYGWIN )
HANDLE thread;
#endif
};
/* HBThreadInit actually starts this routine because
pthread_setschedparam() might fail if called from an external
thread (typically, because the thread exited immediatly). This isn't
really necessary, but I find it nicer that way */
static void ThreadFunc( void * _t )
{
HBThread * t = (HBThread*) _t;
#if defined( HB_MACOSX )
/* Set the thread priority */
struct sched_param param;
memset( ¶m, 0, sizeof( struct sched_param ) );
param.sched_priority = t->priority;
if( pthread_setschedparam( pthread_self(), SCHED_OTHER, ¶m ) )
{
HBLog( "HBThreadInit: couldn't set thread priority" );
}
#endif
/* Start the real routine */
t->function( t->arg );
}
HBThread * HBThreadInit( char * name, void (* function)(void *),
void * arg, int priority )
{
/* Initializations */
HBThread * t;
if( !( t = malloc( sizeof( HBThread ) ) ) )
{
HBLog( "HBThreadInit: malloc() failed, gonna crash" );
return NULL;
}
t->name = strdup( name );
t->priority = priority;
t->function = function;
t->arg = arg;
/* Create and start the thread */
#if defined( HB_BEOS )
t->thread = spawn_thread( (int32 (*)( void * )) ThreadFunc,
name, priority, t );
resume_thread( t->thread );
#elif defined( HB_MACOSX ) || defined( HB_LINUX )
pthread_create( &t->thread, NULL,
(void * (*)( void * )) ThreadFunc, t );
#elif defined( HB_CYGWIN )
t->thread = CreateThread( NULL, 0,
(LPTHREAD_START_ROUTINE) ThreadFunc, t, 0, NULL );
#endif
HBLog( "HBThreadInit: thread %d started (\"%s\")",
t->thread, t->name );
return t;
}
void HBThreadClose( HBThread ** _t )
{
HBThread * t = *_t;
/* Join the thread */
#if defined( HB_BEOS )
long exitValue;
wait_for_thread( t->thread, &exitValue );
#elif defined( HB_MACOSX ) || defined( HB_LINUX )
pthread_join( t->thread, NULL );
#elif defined( HB_CYGWIN )
WaitForSingleObject( t->thread, INFINITE );
#endif
HBLog( "HBThreadClose: thread %d stopped (\"%s\")",
t->thread, t->name );
/* Clean up */
free( t->name );
free( t );
*_t = NULL;
}
/**********************************************************************
* HBLock implementation
**********************************************************************/
HBLock * HBLockInit()
{
HBLock * l;
if( !( l = malloc( sizeof( HBLock ) ) ) )
{
HBLog( "HBLockInit: malloc() failed, gonna crash" );
return NULL;
}
#if defined( HB_BEOS )
l->sem = create_sem( 1, "sem" );
#elif defined( HB_MACOSX ) || defined( HB_LINUX )
pthread_mutex_init( &l->mutex, NULL );
#elif defined( HB_CYGWIN )
l->mutex = CreateMutex( 0, FALSE, 0 );
#endif
return l;
}
void HBLockClose( HBLock ** _l )
{
HBLock * l = *_l;
#if defined( HB_BEOS )
delete_sem( l->sem );
#elif defined( HB_MACOSX ) || defined( HB_LINUX )
pthread_mutex_destroy( &l->mutex );
#elif defined( HB_CYGWIN )
CloseHandle( l->mutex );
#endif
free( l );
*_l = NULL;
}
/**********************************************************************
* HBCond implementation
**********************************************************************/
HBCond * HBCondInit()
{
HBCond * c = malloc( sizeof( HBCond ) );
#if defined( HB_BEOS )
c->thread = -1;
#elif defined( HB_MACOSX ) || defined( HB_LINUX )
pthread_cond_init( &c->cond, NULL );
#elif defined( HB_CYGWIN )
/* TODO */
#endif
return c;
}
void HBCondClose( HBCond ** _c )
{
HBCond * c = *_c;
#if defined( HB_BEOS )
#elif defined( HB_MACOSX ) || defined( HB_LINUX )
pthread_cond_destroy( &c->cond );
#elif defined( HB_CYGWIN )
/* TODO */
#endif
free( c );
*_c = NULL;
}
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