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

     1  #include "pthread_impl.h"
     2  
     3  int pthread_setcanceltype(int new, int *old)
     4  {
     5  	struct pthread *self = __pthread_self();
     6  	if (new > 1U) return EINVAL;
     7  	if (old) *old = self->cancelasync;
     8  	self->cancelasync = new;
     9  	if (new) pthread_testcancel();
    10  	return 0;
    11  }