pthread_mutexattr(3) [freebsd man page]
PTHREAD_MUTEXATTR(3) BSD Library Functions Manual PTHREAD_MUTEXATTR(3) NAME
pthread_mutexattr_init, pthread_mutexattr_destroy, pthread_mutexattr_setprioceiling, pthread_mutexattr_getprioceiling, pthread_mutexattr_setprotocol, pthread_mutexattr_getprotocol, pthread_mutexattr_settype, pthread_mutexattr_gettype -- mutex attribute opera- tions 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); int pthread_mutexattr_setprioceiling(pthread_mutexattr_t *attr, int prioceiling); int pthread_mutexattr_getprioceiling(pthread_mutexattr_t *attr, int *prioceiling); int pthread_mutexattr_setprotocol(pthread_mutexattr_t *attr, int protocol); int pthread_mutexattr_getprotocol(pthread_mutexattr_t *attr, int *protocol); int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type); int pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *type); DESCRIPTION
Mutex attributes are used to specify parameters to pthread_mutex_init(). One attribute object can be used in multiple calls to pthread_mutex_init(), with or without modifications between calls. The pthread_mutexattr_init() function initializes attr with all the default mutex attributes. The pthread_mutexattr_destroy() function destroys attr. The pthread_mutexattr_set*() functions set the attribute that corresponds to each function name. The pthread_mutexattr_get*() functions copy the value of the attribute that corresponds to each function name to the location pointed to by the second function parameter. RETURN VALUES
If successful, these functions return 0. Otherwise, an error number is returned to indicate the error. ERRORS
The pthread_mutexattr_init() function will fail if: [ENOMEM] Out of memory. The pthread_mutexattr_destroy() function will fail if: [EINVAL] Invalid value for attr. The pthread_mutexattr_setprioceiling() function will fail if: [EINVAL] Invalid value for attr, or invalid value for prioceiling. The pthread_mutexattr_getprioceiling() function will fail if: [EINVAL] Invalid value for attr. The pthread_mutexattr_setprotocol() function will fail if: [EINVAL] Invalid value for attr, or invalid value for protocol. The pthread_mutexattr_getprotocol() function will fail if: [EINVAL] Invalid value for attr. The pthread_mutexattr_settype() function will fail if: [EINVAL] Invalid value for attr, or invalid value for type. The pthread_mutexattr_gettype() function will fail if: [EINVAL] Invalid value for attr. SEE ALSO
pthread_mutex_init(3) STANDARDS
The pthread_mutexattr_init() and pthread_mutexattr_destroy() functions conform to ISO/IEC 9945-1:1996 (``POSIX.1'') The pthread_mutexattr_setprioceiling(), pthread_mutexattr_getprioceiling(), pthread_mutexattr_setprotocol(), pthread_mutexattr_getprotocol(), pthread_mutexattr_settype(), and pthread_mutexattr_gettype() functions conform to Version 2 of the Single UNIX Specification (``SUSv2'') BSD
May 1, 2000 BSD
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PTHREAD_MUTEXATTR(3) BSD Library Functions Manual PTHREAD_MUTEXATTR(3) NAME
pthread_mutexattr_init, pthread_mutexattr_destroy, pthread_mutexattr_setprioceiling, pthread_mutexattr_getprioceiling, pthread_mutexattr_setprotocol, pthread_mutexattr_getprotocol, pthread_mutexattr_settype, pthread_mutexattr_gettype -- mutex attribute opera- tions 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); int pthread_mutexattr_setprioceiling(pthread_mutexattr_t *attr, int prioceiling); int pthread_mutexattr_getprioceiling(pthread_mutexattr_t *attr, int *prioceiling); int pthread_mutexattr_setprotocol(pthread_mutexattr_t *attr, int protocol); int pthread_mutexattr_getprotocol(pthread_mutexattr_t *attr, int *protocol); int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type); int pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *type); DESCRIPTION
Mutex attributes are used to specify parameters to pthread_mutex_init(). One attribute object can be used in multiple calls to pthread_mutex_init(), with or without modifications between calls. The pthread_mutexattr_init() function initializes attr with all the default mutex attributes. The pthread_mutexattr_destroy() function destroys attr. The pthread_mutexattr_set*() functions set the attribute that corresponds to each function name. The pthread_mutexattr_get*() functions copy the value of the attribute that corresponds to each function name to the location pointed to by the second function parameter. RETURN VALUES
If successful, these functions return 0. Otherwise, an error number is returned to indicate the error. ERRORS
The pthread_mutexattr_init() function will fail if: [ENOMEM] Out of memory. The pthread_mutexattr_destroy() function will fail if: [EINVAL] Invalid value for attr. The pthread_mutexattr_setprioceiling() function will fail if: [EINVAL] Invalid value for attr, or invalid value for prioceiling. The pthread_mutexattr_getprioceiling() function will fail if: [EINVAL] Invalid value for attr. The pthread_mutexattr_setprotocol() function will fail if: [EINVAL] Invalid value for attr, or invalid value for protocol. The pthread_mutexattr_getprotocol() function will fail if: [EINVAL] Invalid value for attr. The pthread_mutexattr_settype() function will fail if: [EINVAL] Invalid value for attr, or invalid value for type. The pthread_mutexattr_gettype() function will fail if: [EINVAL] Invalid value for attr. SEE ALSO
pthread_mutex_init(3) STANDARDS
The pthread_mutexattr_init() and pthread_mutexattr_destroy() functions conform to ISO/IEC 9945-1:1996 (``POSIX.1'') The pthread_mutexattr_setprioceiling(), pthread_mutexattr_getprioceiling(), pthread_mutexattr_setprotocol(), pthread_mutexattr_getprotocol(), pthread_mutexattr_settype(), and pthread_mutexattr_gettype() functions conform to Version 2 of the Single UNIX Specification (``SUSv2'') BSD
May 1, 2000 BSD