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int pthread_create(pthread_t *thread, const pthread_attr_t *attr, void *(*start_routine)(void*), void *arg);
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int pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy);º¯ÊýÀ´»ñÈ¡Ëù
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int sched_get_priority_max(int policy);
int sched_get_priority_min(int policy);
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policy = SCHED_OTHER
Show current configuration of priority
max_priority = 0
min_priority = 0
Show SCHED_FIFO of priority
max_priority = 99
min_priority = 1
Show SCHED_RR of priority
max_priority = 99
min_priority = 1
Show priority of current thread
priority = 0
Set thread policy
Set SCHED_FIFO policy
policy = SCHED_FIFO
Set SCHED_RR policy
policy = SCHED_RR
Restore current policy
policy = SCHED_OTHER
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int pthread_attr_setschedparam(pthread_attr_t *attr, const struct sched_param *param);
int pthread_attr_getschedparam(const pthread_attr_t
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