#include <pthread.h> int pthread_mutexattr_gettype(pthread_mutexattr_t *restrict attr , int *restrict type);
The default value of the type attribute is PTHREAD_MUTEX_DEFAULT.
The type argument specifies the type of mutex. Valid mutex types include
PTHREAD_MUTEX_NORMAL
PTHREAD_MUTEX_ERRORCHECK
PTHREAD_MUTEX_RECURSIVE
PTHREAD_MUTEX_DEFAULT
For a description of each type, see pthread_mutexattr_settype Syntax.