src/thread/pthread_setattr_default_np.c

   1 #include "pthread_impl.h"
   2 #include <string.h>
   3
   4 extern size_t __default_stacksize;
   5 extern size_t __default_guardsize;
   6
   7 int pthread_setattr_default_np(const pthread_attr_t *attrp)
   8 {
   9         /* Reject anything in the attr object other than stack/guard size. */
  10         pthread_attr_t tmp = *attrp, zero = { 0 };
  11         tmp._a_stacksize = 0;
  12         tmp._a_guardsize = 0;
  13         if (memcmp(&tmp, &zero, sizeof tmp))
  14                 return EINVAL;
  15
  16         __inhibit_ptc();
  17         if (attrp->_a_stacksize >= __default_stacksize)
  18                 __default_stacksize = attrp->_a_stacksize;
  19         if (attrp->_a_guardsize >= __default_guardsize)
  20                 __default_guardsize = attrp->_a_guardsize;
  21         __release_ptc();
  22
  23         return 0;
  24 }
  25
  26 int pthread_getattr_default_np(pthread_attr_t *attrp)
  27 {
  28         __acquire_ptc();
  29         *attrp = (pthread_attr_t) {
  30                 ._a_stacksize = __default_stacksize,
  31                 ._a_guardsize = __default_guardsize,
  32         };
  33         __release_ptc();
  34         return 0;
  35 }