1#ifndef _PERF_TARGET_H
2#define _PERF_TARGET_H
3
4#include <stdbool.h>
5#include <sys/types.h>
6
7struct target {
8	const char   *pid;
9	const char   *tid;
10	const char   *cpu_list;
11	const char   *uid_str;
12	uid_t	     uid;
13	bool	     system_wide;
14	bool	     uses_mmap;
15	bool	     default_per_cpu;
16	bool	     per_thread;
17};
18
19enum target_errno {
20	TARGET_ERRNO__SUCCESS		= 0,
21
22	/*
23	 * Choose an arbitrary negative big number not to clash with standard
24	 * errno since SUS requires the errno has distinct positive values.
25	 * See 'Issue 6' in the link below.
26	 *
27	 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
28	 */
29	__TARGET_ERRNO__START		= -10000,
30
31	/* for target__validate() */
32	TARGET_ERRNO__PID_OVERRIDE_CPU	= __TARGET_ERRNO__START,
33	TARGET_ERRNO__PID_OVERRIDE_UID,
34	TARGET_ERRNO__UID_OVERRIDE_CPU,
35	TARGET_ERRNO__PID_OVERRIDE_SYSTEM,
36	TARGET_ERRNO__UID_OVERRIDE_SYSTEM,
37	TARGET_ERRNO__SYSTEM_OVERRIDE_THREAD,
38
39	/* for target__parse_uid() */
40	TARGET_ERRNO__INVALID_UID,
41	TARGET_ERRNO__USER_NOT_FOUND,
42
43	__TARGET_ERRNO__END,
44};
45
46enum target_errno target__validate(struct target *target);
47enum target_errno target__parse_uid(struct target *target);
48
49int target__strerror(struct target *target, int errnum, char *buf, size_t buflen);
50
51static inline bool target__has_task(struct target *target)
52{
53	return target->tid || target->pid || target->uid_str;
54}
55
56static inline bool target__has_cpu(struct target *target)
57{
58	return target->system_wide || target->cpu_list;
59}
60
61static inline bool target__none(struct target *target)
62{
63	return !target__has_task(target) && !target__has_cpu(target);
64}
65
66static inline bool target__uses_dummy_map(struct target *target)
67{
68	bool use_dummy = false;
69
70	if (target->default_per_cpu)
71		use_dummy = target->per_thread ? true : false;
72	else if (target__has_task(target) ||
73	         (!target__has_cpu(target) && !target->uses_mmap))
74		use_dummy = true;
75
76	return use_dummy;
77}
78
79#endif /* _PERF_TARGET_H */
80