/* Make sure it works with md==NULL */
-#define HEAP_OFFSET (128<<20) /* Safety gap from the heap's break address.
- * Try to increase this first if you experience
- * strange errors under valgrind. */
+/* Safety gap from the heap's break address.
+ * Try to increase this first if you experience strange errors under
+ * valgrind. */
+#define HEAP_OFFSET (128UL<<20)
void *mmalloc_get_default_md(void)
{
/* Initialize the default malloc descriptor. */
void mmalloc_preinit(void)
{
+ int res;
if (!__mmalloc_default_mdp) {
- __mmalloc_default_mdp =
- mmalloc_attach(-1, (char *) sbrk(0) + HEAP_OFFSET);
+ unsigned long mask = ~((unsigned long)getpagesize() - 1);
+ void *addr = (void*)(((unsigned long)sbrk(0) + HEAP_OFFSET) & mask);
+ __mmalloc_default_mdp = mmalloc_attach(-1, addr);
/* Fixme? only the default mdp in protected against forks */
- if (xbt_os_thread_atfork(mmalloc_fork_prepare,
- mmalloc_fork_parent, mmalloc_fork_child) != 0)
- abort();
+ res = xbt_os_thread_atfork(mmalloc_fork_prepare,
+ mmalloc_fork_parent, mmalloc_fork_child);
+ if (res != 0)
+ THROWF(system_error,0,"xbt_os_thread_atfork() failed: return value %d",res);
}
xbt_assert(__mmalloc_default_mdp != NULL);
}