Set the priority of a process
#include <sched.h> int setprio( pid_t pid, int prio );
In QNX Neutrino 6.6 or later, you can wrap the new priority in one these macros to specify how to handle out-of-range priority requests:
If procnto was started with a -P option ending with s or S, out-of-range priority requests by default "saturate" at the maximum allowed value.
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 libraries for porting QNX 4 applications. For new programs, use sched_setparam(), pthread_setschedparam(), or pthread_setschedprio().