int mutex_service_call(uint32_t svc_number, ...) {
int ret = 0;
va_list ap;
va_start(ap, svc_number);
switch (svc_number) {
case SVC_ACQUIRE: {
struct mutex *mut = va_arg(ap, struct mutex *);
ret = svc_acquire(mut);
break;
}
case SVC_RELEASE: {
struct mutex *mut = va_arg(ap, struct mutex *);
svc_release(mut);
break;
}
default:
panic_print("Unknown SVC: %d", svc_number);
break;
}
va_end(ap);
return ret;
}
/*
* Release the specified connection.
* Certain actions may be performed before doing this:
* - drain of a single UDP packet if the socket type is SOCK_DGRAM
*/
void conn_free( connection_s *cp, int release_mem )
{
struct service *sp ;
if( cp == NULL )
return;
if( debug.on )
msg( LOG_INFO, "conn_free", "freeing connection") ;
sp = cp->co_sp ;
if( (SVC_SOCKET_TYPE( sp ) == SOCK_DGRAM) && (SVC_IS_ACTIVE( sp )) )
drain( cp->co_descriptor ) ;
if ( SVC_RELE( sp ) == 0 ) {
pset_remove( SERVICES( ps ), sp ) ;
svc_release( sp );
}
cp->co_sp = NULL;
if ( CONN_DESCRIPTOR( cp ) > 0 )
CONN_CLOSE( cp ) ;
CLEAR( *cp ) ;
if (release_mem) {
FREE_CONN( cp ) ;
}
}
/*
* Invoked when a server of the specified service dies
*/
void svc_postmortem( struct service *sp, struct server *serp )
{
struct service *co_sp = SERVER_CONNSERVICE( serp ) ;
connection_s *cp = SERVER_CONNECTION( serp ) ;
const char *func = "svc_postmortem" ;
SVC_DEC_RUNNING_SERVERS( sp ) ;
/*
* Log information about the server that died
*/
if ( SVC_IS_LOGGING( sp ) )
{
if ( SERVER_WRITES_TO_LOG(serp) )
{
if ( debug.on )
msg( LOG_DEBUG, func,
"Checking log size of %s service", SVC_ID( sp ) ) ;
xlog_control( SVC_LOG( sp ), XLOG_SIZECHECK ) ;
}
svc_log_exit( sp, serp ) ;
}
/*
* Now check if we have to check the log size of the service that owns
* the connection
*/
if ( co_sp != sp && SVC_IS_LOGGING( co_sp ) )
xlog_control( SVC_LOG( co_sp ), XLOG_SIZECHECK ) ;
if (!SVC_WAITS(sp)) {
conn_free( cp, 1 ) ;
cp = NULL;
} else {
if (cp) {
if ( SVC_SOCKET_TYPE( sp ) == SOCK_DGRAM )
drain( cp->co_descriptor ) ;
free(cp);
cp = NULL;
if( SVC_RELE( sp ) == 0 )
svc_release( sp ); /* shouldn't be 0, but should remove from
* pset if it is... */
}
svc_resume(sp);
}
}