pthread_mutexattr_init(3)   Library Functions Manual   pthread_mutexattr_init(3)

NAME
     pthread_mutexattr_init,  pthread_mutexattr_destroy - initialize and destroy
     a mutex attributes object

LIBRARY
     POSIX threads library (libpthread, -lpthread)

SYNOPSIS
     #include <pthread.h>

     int pthread_mutexattr_init(pthread_mutexattr_t *attr);
     int pthread_mutexattr_destroy(pthread_mutexattr_t *attr);

DESCRIPTION
     The pthread_mutexattr_init() function initializes the mutex attributes  ob-
     ject  pointed  to by attr with default values for all attributes defined by
     the implementation.

     The results of initializing an already initialized mutex attributes  object
     are undefined.

     The  pthread_mutexattr_destroy() function destroys a mutex attribute object
     (making it uninitialized).	 Once a mutex attributes  object  has  been  de-
     stroyed, it can be reinitialized with pthread_mutexattr_init().

     The  results of destroying an uninitialized mutex attributes object are un-
     defined.

RETURN VALUE
     On success, these functions return 0.  On error, they return a positive er-
     ror number.

STANDARDS
     POSIX.1-2008.

HISTORY
     POSIX.1-2001.

NOTES
     Subsequent changes to a mutex attributes object do not  affect  mutex  that
     have already been initialized using that object.

SEE ALSO
     pthread_mutex_init(3), pthread_mutexattr_getpshared(3),
     pthread_mutexattr_getrobust(3), pthreads(7)

Linux man-pages 6.18		   2026-02-08	       pthread_mutexattr_init(3)