EN JA
PTHREAD_MUTEXATTR_GETKIND_NP(3)
PTHREAD_MUTEXATTR_GETKIND_NP(3) FreeBSD Library Functions Manual PTHREAD_MUTEXATTR_GETKIND_NP(3)

NAME

pthread_mutexattr_getkind_np, pthread_mutexattr_setkind_npmutex attribute operations (legacy)

LIBRARY

POSIX Threads Library (libpthread, -lpthread)

SYNOPSIS

#include < pthread_np.h>

int
pthread_mutexattr_getkind_np( pthread_mutexattr_t attr);

int
pthread_mutexattr_setkind_np( pthread_mutexattr_t *attr, int kind);

DESCRIPTION

These functions are deprecated and non-portable implementation of the mutex type manipulation.

It is recommended to use the pthread_mutexattr_gettype(3) and pthread_mutexattr_settype(3) functions instead.

RETURN VALUES

The pthread_mutexattr_getkind_np() function returns a positive value representing the “kind” of the mutex attribute attr if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.


The pthread_mutexattr_setkind_np() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.

ERRORS

The pthread_mutexattr_getkind_np() and pthread_mutexattr_setkind_np() functions will fail if:
[ EINVAL]
The value specified by attr is invalid.
February 13, 2003 FreeBSD