opd_anon.h revision 2b16b5ffd52ea5c0289e5ce794298bce5d941b2b 
1/**
2 * @file opd_anon.h
3 * Anonymous region handling.
4 *
5 * @remark Copyright 2005 OProfile authors
6 * @remark Read the file COPYING
7 *
8 * @author John Levon
9 */
10
11#ifndef OPD_ANON_H
12#define OPD_ANON_H
13
14#include "op_types.h"
15#include "op_list.h"
16
17#include "opd_cookie.h"
18
19#include <sys/types.h>
20
21struct transient;
22
23/**
24 * Shift useful bits into play for VMA hashing.
25 */
26#define VMA_SHIFT 13
27
28/* Maximum size of the image name considered */
29#define MAX_IMAGE_NAME_SIZE 20
30
31struct anon_mapping {
32	/** start of the mapping */
33	vma_t start;
34	/** end of the mapping */
35	vma_t end;
36	/** tgid of the app */
37	pid_t tgid;
38	/** cookie of the app */
39	cookie_t app_cookie;
40	/** hash list */
41	struct list_head list;
42	/** lru list */
43	struct list_head lru_list;
44	char name[MAX_IMAGE_NAME_SIZE+1];
45};
46
47/**
48 * Try to find an anonymous mapping for the given pc/tgid pair.
49 */
50struct anon_mapping * find_anon_mapping(struct transient *);
51
52void anon_init(void);
53
54#endif /* OPD_ANON_H */
55