+2013-12-19 Paul Pluzhnikov <ppluzhnikov@google.com>
+
+ * elf/dl-misc.c (ptr_to_signal_safe_allocator_header): New function.
+ (__signal_safe_memalign, __signal_safe_free): Use it.
+ (__signal_safe_realloc): Likewise.
+
2013-12-19 Joseph Myers <joseph@codesourcery.com>
* manual/texinfo.tex: Update to version 2013-11-26.10 with
void *start;
};
+static inline struct __signal_safe_allocator_header *
+ptr_to_signal_safe_allocator_header (void *ptr)
+{
+ return (struct __signal_safe_allocator_header *)
+ ((char *) (ptr) - sizeof (struct __signal_safe_allocator_header));
+}
+
void *weak_function
__signal_safe_memalign (size_t boundary, size_t size)
{
struct __signal_safe_allocator_header *header;
+
if (boundary < sizeof (*header))
boundary = sizeof (*header);
/* Boundary must be a power of two. */
- if (boundary & (boundary - 1) == 0)
+ if ((boundary & (boundary - 1)) == 0)
return NULL;
size_t pg = GLRO (dl_pagesize);
actual = (void *) ((start_pg - 1) * pg);
}
char *start = (void *) (start_pg * pg);
- header = start - sizeof (*header);
-
+ header = ptr_to_signal_safe_allocator_header (start);
}
+
header->size = actual_size;
header->start = actual;
void *ptr = header;
if (ptr == NULL)
return;
- struct __signal_safe_allocator_header *header = ((char *) ptr) - sizeof (*header);
+ struct __signal_safe_allocator_header *header
+ = ptr_to_signal_safe_allocator_header (ptr);
int ret = munmap (header->start, header->size);
assert (ret == 0);
if (ptr == NULL)
return __signal_safe_malloc (size);
- struct __signal_safe_allocator_header *header = ((char *) ptr) - sizeof (*header);
+ struct __signal_safe_allocator_header *header
+ = ptr_to_signal_safe_allocator_header (ptr);
size_t old_size = header->size;
if (old_size - sizeof (*header) >= size)
return ptr;