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glibc  2.9
Functions
pthread_mutexattr_setprioceiling.c File Reference
#include <errno.h>
#include <pthreadP.h>

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Functions

int pthread_mutexattr_setprioceiling (pthread_mutexattr_t *attr, int prioceiling)

Function Documentation

Definition at line 26 of file pthread_mutexattr_setprioceiling.c.

{
  if (__sched_fifo_min_prio == -1)
    __init_sched_fifo_prio ();

  if (__builtin_expect (prioceiling < __sched_fifo_min_prio, 0)
      || __builtin_expect (prioceiling > __sched_fifo_max_prio, 0)
      || __builtin_expect ((prioceiling
                         & (PTHREAD_MUTEXATTR_PRIO_CEILING_MASK
                            >> PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT))
                        != prioceiling, 0))
    return EINVAL;

  struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr;

  iattr->mutexkind = ((iattr->mutexkind & ~PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
                    | (prioceiling << PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT));

  return 0;
}

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