simplify pthread_attr_t stack/guard size representation

previously, the pthread_attr_t object was always initialized all-zero,
and stack/guard size were represented as differences versus their
defaults. this required lots of confusing offset arithmetic everywhere
they were used. instead, have pthread_attr_init fill in the default
values, and work with absolute sizes everywhere.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/thread/pthread_attr_get.c b/src/thread/pthread_attr_get.c
index 3d296bf3..4aa5afdb 100644
--- a/src/thread/pthread_attr_get.c
+++ b/src/thread/pthread_attr_get.c
@@ -7,7 +7,7 @@ int pthread_attr_getdetachstate(const pthread_attr_t *a, int *state)
 }
 int pthread_attr_getguardsize(const pthread_attr_t *restrict a, size_t *restrict size)
 {
-	*size = a->_a_guardsize + DEFAULT_GUARD_SIZE;
+	*size = a->_a_guardsize;
 	return 0;
 }
 
@@ -39,14 +39,14 @@ int pthread_attr_getstack(const pthread_attr_t *restrict a, void **restrict addr
 {
 	if (!a->_a_stackaddr)
 		return EINVAL;
-	*size = a->_a_stacksize + DEFAULT_STACK_SIZE;
+	*size = a->_a_stacksize;
 	*addr = (void *)(a->_a_stackaddr - *size);
 	return 0;
 }
 
 int pthread_attr_getstacksize(const pthread_attr_t *restrict a, size_t *restrict size)
 {
-	*size = a->_a_stacksize + DEFAULT_STACK_SIZE;
+	*size = a->_a_stacksize;
 	return 0;
 }