make futex operations use private-futex mode when possible

[musl] / src / thread / pthread_mutex_init.c

#include "pthread_impl.h"

int pthread_mutex_init(pthread_mutex_t *restrict m, const pthread_mutexattr_t *restrict a)
{
        *m = (pthread_mutex_t){0};
        if (a) m->_m_type = a->__attr;
        if (m->_m_type & 4) m->_m_type |= 128U;
        return 0;
}