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_rwlock_wrlock(3c)

Standard C Library Functions                         pthread_rwlock_wrlock(3C)



NAME
       pthread_rwlock_wrlock,  pthread_rwlock_trywrlock  -  lock or attempt to
       lock read-write lock object for writing

SYNOPSIS
       #include <pthread.h>

       int pthread_rwlock_wrlock(pthread_rwlock_t *rwlock);


       int pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock);

DESCRIPTION
       The pthread_rwlock_wrlock() function applies a write lock to the  read-
       write  lock referenced by rwlock. The calling thread acquires the write
       lock if no other thread (reader or writer) holds  the  read-write  lock
       rwlock. Otherwise, the thread blocks until it can acquire the lock.


       The  pthread_rwlock_trywrlock()  function applies a write lock like the
       pthread_rwlock_wrlock() function, with the exception that the  function
       fails if any thread currently holds rwlock (for reading or writing).


       Writers  are  favored over readers of the same priority to avoid writer
       starvation. See pthread_rwlock_rdlock(3C).


       Results are undefined if any of these  functions  are  called  with  an
       uninitialized read-write lock.


       If  a signal is delivered to a thread waiting for a read-write lock for
       writing, upon return from the signal handler the thread resumes waiting
       for the read-write lock for writing as if it was not interrupted.

RETURN VALUES
       If  successful,  the pthread_rwlock_wrlock() function returns 0. Other‐
       wise, an error number is returned to indicate the error.


       The pthread_rwlock_trywrlock() function returns 0 if the lock for writ‐
       ing  on  the  read-write  lock object referenced by rwlock is acquired.
       Otherwise an error number is returned to indicate the error.

ERRORS
       The pthread_rwlock_wrlock() function will fail if:

       EDEADLK    The current thread already  owns  the  read-write  lock  for
                  writing or reading.



       The pthread_rwlock_trywrlock() function will fail if:

       EBUSY    The  read-write lock could not be acquired for writing because
                it was already locked for reading or writing.


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_rwlock_init(3C),                     pthread_rwlock_rdlock(3C),
       pthread_rwlock_unlock(3C),  pthread_rwlockattr_init(3C), attributes(7),
       standards(7)



Oracle Solaris 11.4               16 May 2014        pthread_rwlock_wrlock(3C)