| 1152 |
|
|
| 1153 |
|
void Set_pthread_attr(pthread_attr_t *attr, int priority) |
| 1154 |
|
{ |
| 1155 |
< |
// nothing to do |
| 1155 |
> |
#ifdef HAVE_PTHREADS |
| 1156 |
> |
pthread_attr_init(attr); |
| 1157 |
> |
#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING) |
| 1158 |
> |
// Some of these only work for superuser |
| 1159 |
> |
if (geteuid() == 0) { |
| 1160 |
> |
pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED); |
| 1161 |
> |
pthread_attr_setschedpolicy(attr, SCHED_FIFO); |
| 1162 |
> |
struct sched_param fifo_param; |
| 1163 |
> |
fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) + |
| 1164 |
> |
sched_get_priority_max(SCHED_FIFO)) / 2 + |
| 1165 |
> |
priority); |
| 1166 |
> |
pthread_attr_setschedparam(attr, &fifo_param); |
| 1167 |
> |
} |
| 1168 |
> |
if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) { |
| 1169 |
> |
#ifdef PTHREAD_SCOPE_BOUND_NP |
| 1170 |
> |
// If system scope is not available (eg. we're not running |
| 1171 |
> |
// with CAP_SCHED_MGT capability on an SGI box), try bound |
| 1172 |
> |
// scope. It exposes pthread scheduling to the kernel, |
| 1173 |
> |
// without setting realtime priority. |
| 1174 |
> |
pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP); |
| 1175 |
> |
#endif |
| 1176 |
> |
} |
| 1177 |
> |
#endif |
| 1178 |
> |
#endif |
| 1179 |
|
} |
| 1180 |
|
|
| 1181 |
|
|
