1 files changed, 37 insertions, 0 deletions
diff --git a/src/thread/pthread_setattr_default_np.c b/src/thread/pthread_setattr_default_np.c
new file mode 100644
index 0000000..5848622
--- /dev/null
+++ b/src/thread/pthread_setattr_default_np.c
@@ -0,0 +1,37 @@
+#define _GNU_SOURCE
+#include "pthread_impl.h"
+#include <string.h>
+
+#define MIN(a,b) ((a)<(b) ? (a) : (b))
+#define MAX(a,b) ((a)>(b) ? (a) : (b))
+
+int pthread_setattr_default_np(const pthread_attr_t *attrp)
+{
+	/* Reject anything in the attr object other than stack/guard size. */
+	pthread_attr_t tmp = *attrp, zero = { 0 };
+	tmp._a_stacksize = 0;
+	tmp._a_guardsize = 0;
+	if (memcmp(&tmp, &zero, sizeof tmp))
+		return EINVAL;
+
+	unsigned stack = MIN(attrp->_a_stacksize, DEFAULT_STACK_MAX);
+	unsigned guard = MIN(attrp->_a_guardsize, DEFAULT_GUARD_MAX);
+
+	__inhibit_ptc();
+	__default_stacksize = MAX(__default_stacksize, stack);
+	__default_guardsize = MAX(__default_guardsize, guard);
+	__release_ptc();
+
+	return 0;
+}
+
+int pthread_getattr_default_np(pthread_attr_t *attrp)
+{
+	__acquire_ptc();
+	*attrp = (pthread_attr_t) {
+		._a_stacksize = __default_stacksize,
+		._a_guardsize = __default_guardsize,
+	};
+	__release_ptc();
+	return 0;
+}