개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

pthread_mutexattr_setprioceiling(3c)

Standard C Library Functions
                                          pthread_mutexattr_getprioceiling(3C)



NAME
       pthread_mutexattr_getprioceiling,   pthread_mutexattr_setprioceiling  -
       get or set prioceiling attribute of mutex attribute object

SYNOPSIS
       #include <pthread.h>

       int pthread_mutexattr_getprioceiling(
            const pthread_mutexattr_t *restrict attr,
            int *restrict prioceiling);


       int pthread_mutexattr_setprioceiling(pthread_mutexattr_t *attr,
            int prioceiling);

DESCRIPTION
       The pthread_mutexattr_getprioceiling()  and  pthread_mutexattr_setprio‐
       ceiling()  functions,  respectively,  get  and set the priority ceiling
       attribute of a mutex attribute object pointed to  by  attr,  which  was
       previously created by the pthread_mutexattr_init() function.


       The  prioceiling attribute contains the priority ceiling of initialized
       mutexes. The values of prioceiling must be within the range of  priori‐
       ties defined by SCHED_FIFO.


       The  prioceiling  attribute defines the priority ceiling of initialized
       mutexes, which is the minimum priority level at which the critical sec‐
       tion  guarded  by  the  mutex  is  executed. In order to avoid priority
       inversion, the priority ceiling of the mutex must be set to a  priority
       higher  than  or  equal to the highest priority of all the threads that
       may lock that mutex.


       The ceiling value should be drawn from the range of priorities for  the
       SCHED_FIFO  policy.  When a thread acquires such a mutex, the policy of
       the thread at mutex acquisition should match that from which the  ceil‐
       ing  value  was derived (SCHED_FIFO, in this case). If a thread changes
       its scheduling policy while holding a ceiling mutex,  the  behavior  of
       pthread_mutex_lock()  and pthread_mutex_unlock() on this mutex is unde‐
       fined. See pthread_mutex_lock(3C).

RETURN VALUES
       Upon successful completion, the pthread_mutexattr_getprioceiling()  and
       pthread_mutexattr_setprioceiling()  functions  return  0. Otherwise, an
       error number is returned to indicate the error.

ERRORS
       The pthread_mutexattr_setprioceiling() function will fail if:

       EINVAL    The value  specified  by  attr  is  NULL  or  prioceiling  is
                 invalid.



       The  pthread_mutexattr_getprioceiling()  and pthread_mutexattr_setprio‐
       ceiling() functions may fail if:

       EINVAL    The value specified by attr or prioceiling is invalid.


       EPERM     The caller does not have the privilege to perform the  opera‐
                 tion.


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       tab()  box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
       TRIBUTE VALUE _ Interface StabilityCommitted _ MT-LevelMT-Safe _  Stan‐
       dardSee standards(7).


SEE ALSO
       pthread_cond_init(3C),    pthread_create(3C),   pthread_mutex_init(3C),
       pthread_mutex_lock(3C),   sched_get_priority_min(3C),    attributes(7),
       standards(7)



Oracle Solaris 11.4               16 May 2014
                                          pthread_mutexattr_getprioceiling(3C)