Mac Developer Library Developer
Search

 

This manual page is part of Xcode Tools version 5.0

To obtain these tools:

If you are running a version of Xcode Tools other than 5.0, view the documentation locally:

  • In Xcode

  • In Terminal, using the man(1) command

Reading manual pages

Manual pages are intended as a quick reference for people who already understand a technology.

  • To learn how the manual is organized or to learn about command syntax, read the manual page for manpages(5).

  • For more information about this technology, look for other documentation in the Apple Developer Library.

  • For general information about writing shell scripts, read Shell Scripting Primer.




PTHREAD_MUTEX_LOCK(3)    BSD Library Functions Manual    PTHREAD_MUTEX_LOCK(3)

NAME
     pthread_mutex_lock -- lock a mutex

SYNOPSIS
     #include <pthread.h>

     int
     pthread_mutex_lock(pthread_mutex_t *mutex);

DESCRIPTION
     The pthread_mutex_lock() function locks mutex.  If the mutex is already locked, the calling thread will
     block until the mutex becomes available.

RETURN VALUES
     If successful, pthread_mutex_lock() will return zero.  Otherwise, an error number will be returned to
     indicate the error.

ERRORS
     pthread_mutex_lock() will fail if:

     [EDEADLK]          A deadlock would occur if the thread blocked waiting for mutex.

     [EINVAL]           The value specified by mutex is invalid.

SEE ALSO
     pthread_mutex_destroy(3), pthread_mutex_init(3), pthread_mutex_trylock(3), pthread_mutex_unlock(3)

STANDARDS
     pthread_mutex_lock() conforms to ISO/IEC 9945-1:1996 (``POSIX.1'').

BSD                              July 30, 1998                             BSD

Reporting Problems

The way to report a problem with this manual page depends on the type of problem:

Content errors
Report errors in the content of this documentation with the feedback links below.
Bug reports
Report bugs in the functionality of the described tool or API through Bug Reporter.
Formatting problems
Report formatting mistakes in the online version of these pages with the feedback links below.

Feedback