github.com/afumu/libc@v0.0.6/musl/src/thread/pthread_setspecific.c (about)

     1  #include "pthread_impl.h"
     2  
     3  int pthread_setspecific(pthread_key_t k, const void *x)
     4  {
     5  	struct pthread *self = __pthread_self();
     6  	/* Avoid unnecessary COW */
     7  	if (self->tsd[k] != x) {
     8  		self->tsd[k] = (void *)x;
     9  		self->tsd_used = 1;
    10  	}
    11  	return 0;
    12  }