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Get the maximum priority for the scheduling policy
#include <sched.h> int sched_get_priority_max( int policy );
libc
The sched_get_priority_max() function returns the maximum value for the scheduling policy specified by policy. The value of policy must be:
| Policy | Description |
|---|---|
| SCHED_FIFO | A fixed priority scheduler in which the highest priority ready thread will run until it blocks or is preempted by a higher priority thread. |
| SCHED_RR | The same as SCHED_FIFO except threads at the same priority level will time slice (round robin) every 50 msec. |
| SCHED_OTHER | Currently the same as SCHED_RR. |
The appropriate minimum for success, or -1 (errno is set).
POSIX 1003.1 (Realtime Extensions)
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | No |
| Signal handler | Yes |
| Thread | Yes |
sched_getparam(), sched_get_priority_min(), sched_setparam(), sched_getscheduler(), sched_setscheduler()
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