int _getAndUseIFuseConn( iFuseConn_t **iFuseConn ) {
int status;
iFuseConn_t *tmpIFuseConn;
*iFuseConn = NULL;
LOCK( WaitForConnLock );
while ( listSize( ConnectedConn ) >= MAX_NUM_CONN && listSize( FreeConn ) == 0 ) {
untimedWait( &connReqWait.mutex, &connReqWait.cond );
}
tmpIFuseConn = ( iFuseConn_t * ) removeFirstElementOfConcurrentList( FreeConn );
if ( tmpIFuseConn == NULL ) {
if ( listSize( ConnectedConn ) < MAX_NUM_CONN ) {
tmpIFuseConn = newIFuseConn( &status );
if ( status < 0 ) {
_freeIFuseConn( tmpIFuseConn );
return status;
}
_useFreeIFuseConn( tmpIFuseConn );
addToConcurrentList( ConnectedConn, tmpIFuseConn );
*iFuseConn = tmpIFuseConn;
}
else {
rodsLog( LOG_ERROR, "failure to acquire fuse connection; maximum fuse connections exceeded." );
return SYS_MAX_CONNECT_COUNT_EXCEEDED;
}
}
else {
useIFuseConn( tmpIFuseConn );
*iFuseConn = tmpIFuseConn;
}
UNLOCK( WaitForConnLock );
if ( ++ConnManagerStarted == HIGH_NUM_CONN ) {
/* don't do it the first time */
#ifdef USE_BOOST
ConnManagerThr = new boost::thread( connManager );
#else
status = pthread_create( &ConnManagerThr, pthread_attr_default, ( void * ( * )( void * ) ) connManager, ( void * ) NULL );
#endif
if ( status < 0 ) {
ConnManagerStarted--;
rodsLog( LOG_ERROR, "pthread_create failure, status = %d", status );
}
}
return 0;
}
int _getAndUseIFuseConn( iFuseConn_t **iFuseConn ) {
int status;
iFuseConn_t *tmpIFuseConn;
*iFuseConn = NULL;
while ( *iFuseConn == NULL ) {
/* get a free IFuseConn */
if ( listSize( ConnectedConn ) >= MAX_NUM_CONN && listSize( FreeConn ) == 0 ) {
/* have to wait */
_waitForConn();
/* start from begining */
continue;
}
else {
tmpIFuseConn = ( iFuseConn_t * ) removeFirstElementOfConcurrentList( FreeConn );
if ( tmpIFuseConn == NULL ) {
if ( listSize( ConnectedConn ) < MAX_NUM_CONN ) {
/* may cause num of conn > max num of conn */
/* get here when nothing free. make one */
tmpIFuseConn = newIFuseConn( &status );
if ( status < 0 ) {
_freeIFuseConn( tmpIFuseConn );
return status;
}
_useFreeIFuseConn( tmpIFuseConn );
addToConcurrentList( ConnectedConn, tmpIFuseConn );
*iFuseConn = tmpIFuseConn;
break;
}
_waitForConn();
continue;
}
else {
useIFuseConn( tmpIFuseConn );
*iFuseConn = tmpIFuseConn;
break;
}
}
} /* while *iFuseConn */
if ( ++ConnManagerStarted == HIGH_NUM_CONN ) {
/* don't do it the first time */
#ifdef USE_BOOST
ConnManagerThr = new boost::thread( connManager );
#else
status = pthread_create( &ConnManagerThr, pthread_attr_default, ( void * ( * )( void * ) ) connManager, ( void * ) NULL );
#endif
if ( status < 0 ) {
ConnManagerStarted--;
rodsLog( LOG_ERROR, "pthread_create failure, status = %d", status );
}
}
return 0;
}