1 #define _GNU_SOURCE
2 #include "pthread_impl.h"
3 #include <string.h>
4
5 #ifndef MIN
6 #define MIN(a,b) ((a)<(b) ? (a) : (b))
7 #endif
8 #ifndef MAX
9 #define MAX(a,b) ((a)>(b) ? (a) : (b))
10 #endif
11
pthread_setattr_default_np(const pthread_attr_t * attrp)12 int pthread_setattr_default_np(const pthread_attr_t *attrp)
13 {
14 /* Reject anything in the attr object other than stack/guard size. */
15 pthread_attr_t tmp = *attrp, zero = { 0 };
16 tmp._a_stacksize = 0;
17 tmp._a_guardsize = 0;
18 if (memcmp(&tmp, &zero, sizeof tmp))
19 return EINVAL;
20
21 unsigned stack = MIN(attrp->_a_stacksize, DEFAULT_STACK_MAX);
22 unsigned guard = MIN(attrp->_a_guardsize, DEFAULT_GUARD_MAX);
23
24 __inhibit_ptc();
25 __default_stacksize = MAX(__default_stacksize, stack);
26 __default_guardsize = MAX(__default_guardsize, guard);
27 __release_ptc();
28
29 return 0;
30 }
31
pthread_getattr_default_np(pthread_attr_t * attrp)32 int pthread_getattr_default_np(pthread_attr_t *attrp)
33 {
34 __acquire_ptc();
35 *attrp = (pthread_attr_t) {
36 ._a_stacksize = __default_stacksize,
37 ._a_guardsize = __default_guardsize,
38 };
39 __release_ptc();
40 return 0;
41 }
42