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-rw-r--r--src/internal/pthread_impl.h7
-rw-r--r--src/thread/default_attr.c4
-rw-r--r--src/thread/pthread_setattr_default_np.c12
3 files changed, 15 insertions, 8 deletions
diff --git a/src/internal/pthread_impl.h b/src/internal/pthread_impl.h
index 26e6e1df..e73a251f 100644
--- a/src/internal/pthread_impl.h
+++ b/src/internal/pthread_impl.h
@@ -182,12 +182,15 @@ hidden void __acquire_ptc(void);
hidden void __release_ptc(void);
hidden void __inhibit_ptc(void);
-extern hidden size_t __default_stacksize;
-extern hidden size_t __default_guardsize;
+extern hidden unsigned __default_stacksize;
+extern hidden unsigned __default_guardsize;
#define DEFAULT_STACK_SIZE 81920
#define DEFAULT_GUARD_SIZE 4096
+#define DEFAULT_STACK_MAX (8<<20)
+#define DEFAULT_GUARD_MAX (1<<20)
+
#define __ATTRP_C11_THREAD ((void*)(uintptr_t)-1)
#endif
diff --git a/src/thread/default_attr.c b/src/thread/default_attr.c
index 46fe98ee..dce96409 100644
--- a/src/thread/default_attr.c
+++ b/src/thread/default_attr.c
@@ -1,4 +1,4 @@
#include "pthread_impl.h"
-size_t __default_stacksize = DEFAULT_STACK_SIZE;
-size_t __default_guardsize = DEFAULT_GUARD_SIZE;
+unsigned __default_stacksize = DEFAULT_STACK_SIZE;
+unsigned __default_guardsize = DEFAULT_GUARD_SIZE;
diff --git a/src/thread/pthread_setattr_default_np.c b/src/thread/pthread_setattr_default_np.c
index 256f0685..58486220 100644
--- a/src/thread/pthread_setattr_default_np.c
+++ b/src/thread/pthread_setattr_default_np.c
@@ -2,6 +2,9 @@
#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. */
@@ -11,11 +14,12 @@ int pthread_setattr_default_np(const pthread_attr_t *attrp)
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();
- if (attrp->_a_stacksize >= __default_stacksize)
- __default_stacksize = attrp->_a_stacksize;
- if (attrp->_a_guardsize >= __default_guardsize)
- __default_guardsize = attrp->_a_guardsize;
+ __default_stacksize = MAX(__default_stacksize, stack);
+ __default_guardsize = MAX(__default_guardsize, guard);
__release_ptc();
return 0;