ia64/xen-unstable

view extras/mini-os/include/xmalloc.h @ 16520:a583f3a7eafc

Revert 16498:d2bef6551c1263e457aef75ce403ba53652a803f.
author Keir Fraser <keir.fraser@citrix.com>
date Tue Dec 04 22:54:58 2007 +0000 (2007-12-04)
parents 7557f0b4098c
children 8984cc0a1d80
line source
1 #ifndef __XMALLOC_H__
2 #define __XMALLOC_H__
4 /* Allocate space for typed object. */
5 #define xmalloc(_type) ((_type *)_xmalloc(sizeof(_type), __alignof__(_type)))
7 /* Allocate space for array of typed objects. */
8 #define xmalloc_array(_type, _num) ((_type *)_xmalloc_array(sizeof(_type), __alignof__(_type), _num))
10 #define malloc(size) _xmalloc(size, 4)
11 #define free(ptr) xfree(ptr)
13 /* Free any of the above. */
14 extern void xfree(const void *);
16 /* Underlying functions */
17 extern void *_xmalloc(size_t size, size_t align);
18 static inline void *_xmalloc_array(size_t size, size_t align, size_t num)
19 {
20 /* Check for overflow. */
21 if (size && num > UINT_MAX / size)
22 return NULL;
23 return _xmalloc(size * num, align);
24 }
26 #endif /* __XMALLOC_H__ */