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added patch by jmaurer, fixes #18

This commit is contained in:
darkeye 2007-04-26 08:22:45 +00:00
parent 4c1d27044d
commit a8f97b4bac
1 changed files with 24 additions and 32 deletions
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54
darkice/trunk/src/DarkIce.cpp
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@ -1038,43 +1038,40 @@ DarkIce :: configFileCast ( const Config & config )
/*------------------------------------------------------------------------------
* Set POSIX real-time scheduling, if super-user
* Set POSIX real-time scheduling
*----------------------------------------------------------------------------*/
void
DarkIce :: setRealTimeScheduling ( void ) throw ( Exception )
{
// Only if the OS has the POSIX real-time scheduling functions implemented.
#if defined( HAVE_SCHED_GETSCHEDULER ) && defined( HAVE_SCHED_GETPARAM )
uid_t euid;
int high_priority;
struct sched_param param;
euid = geteuid();
/* store the old scheduling parameters */
if ( (origSchedPolicy = sched_getscheduler(0)) == -1 ) {
throw Exception( __FILE__, __LINE__, "sched_getscheduler", errno);
}
if ( euid == 0 ) {
int high_priority;
struct sched_param param;
if ( sched_getparam( 0, &param) == -1 ) {
throw Exception( __FILE__, __LINE__, "sched_getparam", errno);
}
origSchedPriority = param.sched_priority;
/* store the old scheduling parameters */
if ( (origSchedPolicy = sched_getscheduler(0)) == -1 ) {
throw Exception( __FILE__, __LINE__, "sched_getscheduler", errno);
}
/* set SCHED_FIFO with max - 1 priority */
if ( (high_priority = sched_get_priority_max(SCHED_FIFO)) == -1 ) {
throw Exception(__FILE__,__LINE__,"sched_get_priority_max",errno);
}
reportEvent( 8, "scheduler high priority", high_priority);
if ( sched_getparam( 0, &param) == -1 ) {
throw Exception( __FILE__, __LINE__, "sched_getparam", errno);
}
origSchedPriority = param.sched_priority;
/* set SCHED_FIFO with max - 1 priority */
if ( (high_priority = sched_get_priority_max(SCHED_FIFO)) == -1 ) {
throw Exception(__FILE__,__LINE__,"sched_get_priority_max",errno);
}
reportEvent( 8, "scheduler high priority", high_priority);
param.sched_priority = high_priority - 1;
if ( sched_setscheduler( 0, SCHED_FIFO, &param) == -1 ) {
throw Exception( __FILE__, __LINE__, "sched_setscheduler", errno);
}
param.sched_priority = high_priority - 1;
if ( sched_setscheduler( 0, SCHED_FIFO, &param) == -1 ) {
reportEvent( 1,
"Could not set POSIX real-time scheduling, "
"this may cause recording skips.\n"
"Try to run darkice as the super-user.");
} else {
/* ask the new priortiy and report it */
if ( sched_getparam( 0, &param) == -1 ) {
throw Exception( __FILE__, __LINE__, "sched_getparam", errno);
@ -1083,11 +1080,6 @@ DarkIce :: setRealTimeScheduling ( void ) throw ( Exception )
reportEvent( 1,
"Using POSIX real-time scheduling, priority",
param.sched_priority );
} else {
reportEvent( 1,
"Not running as super-user, unable to use POSIX real-time scheduling" );
reportEvent( 1,
"It is recommended that you run this program as super-user");
}
#else
reportEvent( 1, "POSIX scheduling not supported on this system, "