PTHREAD_ATTR_SETSCHEDPOLICYLinux Programmer's MaPTHREAD_ATTR_SETSCHEDPOLICY(3) NAME pthread_attr_setschedpolicy, pthread_attr_getschedpolicy - set/get scheduling policy attribute in thread attributes object SYNOPSIS #include <pthread.h> int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy); int pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy); Compile and link with -pthread. DESCRIPTION The pthread_attr_setschedpolicy() function sets the scheduling policy attribute of the thread attributes object referred to by attr to the value specified in policy. This attribute determines the scheduling policy of a thread created using the thread attributes object attr. The supported values for policy are SCHED_FIFO, SCHED_RR, and SCHED_OTHER, with the semantics described in sched(7). The pthread_attr_getschedpolicy() returns the scheduling policy attribute of the thread attributes object attr in the buffer pointed to by policy. In order for the policy setting made by pthread_attr_setschedpolicy() to have effect when calling pthread_create(3), the caller must use pthread_attr_setinheritsched(3) to set the inherit-scheduler attribute of the attributes object attr to PTHREAD_EXPLICIT_SCHED. RETURN VALUE On success, these functions return 0; on error, they return a nonzero error number. ERRORS pthread_attr_setschedpolicy() can fail with the following error: EINVAL Invalid value in policy. POSIX.1-2001 also documents an optional ENOTSUP error ("attempt was made to set the attribute to an unsupported value") for pthread_attr_setschedpolicy(). ATTRIBUTES Multithreading (see pthreads(7)) The pthread_attr_setschedpolicy() and pthread_attr_getschedpolicy() functions are thread-safe. CONFORMING TO POSIX.1-2001. EXAMPLE See pthread_setschedparam(3). SEE ALSO pthread_attr_init(3), pthread_attr_setinheritsched(3), pthread_attr_setschedparam(3), pthread_create(3), pthread_setschedparam(3), pthread_setschedprio(3), pthreads(7), sched(7) COLOPHON This page is part of release 3.74 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/. Linux 2014-05-21 PTHREAD_ATTR_SETSCHEDPOLICY(3)
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