pthread_attr_setschedpolicy - Changes the scheduling policy attribute of the specified thread attributes object.
DECthreads POSIX 1003.1c Library (libpthread.so)
Interfaces documented on this reference page conform to industry standards as follows:
IEEE Std 1003.1c-1995, POSIX System Application Program Interface
Thread attributes object to be modified. New value for the scheduling policy attribute. Valid values are as follows: SCHED_FIFO, SCHED_RR, SCHED_FG_NP (also known as SCHED_OTHER), SCHED_BG_NP SCHED_OTHER is the default value.
This routine sets the scheduling policy of a thread that is created using the attributes object specified by the attr argument. The default value of the scheduling attribute is SCHED_OTHER.
By default, a created thread inherits the priority of the thread calling pthread_create(3). To specify a policy using this routine, scheduling inheritance must be disabled at the time the thread is created. Before calling pthread_create(3), call pthread_attr_setinheritsched(3) and specify the value PTHREAD_EXPLICIT_SCHED for the inherit argument.
Never attempt to use scheduling as a mechanism for synchronization.
If an error condition occurs, this routine returns an integer value indicating the type of error. Possible return values are as follows: Successful completion. The value specified by policy is invalid.
Functions: pthread_attr_init(3), pthread_attr_getschedpolicy(3), pthread_attr_setinheritsched(3), pthread_attr_setschedparam(3), pthread_create(3)
Manuals: Guide to DECthreads and Programmer's Guide