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   pthread_setschedparam    ( 3 )

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Имя (Name)

pthread_setschedparam, pthread_getschedparam - set/get scheduling policy and parameters of a thread

Синопсис (Synopsis)

#include <pthread.h>

int pthread_setschedparam(pthread_t thread, int policy, const struct sched_param *param); int pthread_getschedparam(pthread_t thread, int *restrict policy, struct sched_param *restrict param);

Compile and link with -pthread.

Описание (Description)

The pthread_setschedparam() function sets the scheduling policy and parameters of the thread thread.

policy specifies the new scheduling policy for thread. The supported values for policy, and their semantics, are described in sched(7).

The structure pointed to by param specifies the new scheduling parameters for thread. Scheduling parameters are maintained in the following structure:

struct sched_param { int sched_priority; /* Scheduling priority */ };

As can be seen, only one scheduling parameter is supported. For details of the permitted ranges for scheduling priorities in each scheduling policy, see sched(7).

The pthread_getschedparam() function returns the scheduling policy and parameters of the thread thread, in the buffers pointed to by policy and param, respectively. The returned priority value is that set by the most recent pthread_setschedparam(), pthread_setschedprio(3), or pthread_create(3) call that affected thread. The returned priority does not reflect any temporary priority adjustments as a result of calls to any priority inheritance or priority ceiling functions (see, for example, pthread_mutexattr_setprioceiling(3) and pthread_mutexattr_setprotocol(3)).