Set the priority of a process
#include <sched.h> int setprio( pid_t pid, int prio );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The setprio() function changes the priority of thread 1 of process pid to priority prio. If pid is zero, the priority of the calling thread is set.
The previous priority, or -1 if an error occurred (errno is set).
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |
The getprio() and setprio() functions are included in the QNX Neutrino libraries for porting QNX 4 applications. For new programs, use sched_setparam(), pthread_setschedparam(), or pthread_setschedprio().
errno, getprio(), pthread_getschedparam(), pthread_setschedparam(), pthread_setschedprio(), sched_getparam(), sched_get_priority_max(), sched_get_priority_min(), sched_getscheduler(), sched_setscheduler(), sched_yield()
“Thread scheduling” in the QNX Neutrino Microkernel chapter of the System Architecture guide
“Scheduling policies” in the Programming Overview chapter of the QNX Neutrino Programmer's Guide