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PTHREAD_SCHEDPARAM(3) BSD Library Functions Manual PTHREAD_SCHEDPARAM(3) NAME pthread_getschedparam, pthread_setschedparam -- thread scheduling parame-ter parameter ter manipulation SYNOPSIS #include <pthread.h> int pthread_getschedparam(pthread_t thread, int *restrict policy, struct sched_param *restrict param); int pthread_setschedparam(pthread_t thread, int policy, const struct sched_param *param); DESCRIPTION The pthread_getschedparam() and pthread_setschedparam() functions get and set the scheduling parameters of individual threads. The scheduling pol-icy policy icy for a thread can either be SCHED_FIFO (first in, first out) or SCHED_RR (round-robin). The thread priority (accessed via param->sched_priority) must be at least PTHREAD_MIN_PRIORITY and no more than PTHREAD_MAX_PRIORITY. RETURN VALUES If successful, these functions return 0. Otherwise, an error number is returned to indicate the error. ERRORS pthread_getschedparam() will fail if: [ESRCH] Non-existent thread thread. pthread_setschedparam() will fail if: [EINVAL] Invalid value for policy. [ENOTSUP] Invalid value for scheduling parameters. [ESRCH] Non-existent thread thread. STANDARDS pthread_setschedparam() and pthread_getschedparam() conform to Version 2 of the Single UNIX Specification (``SUSv2'') BSD May 1, 2000 BSD |