1 #ifndef _PERF_TARGET_H
2 #define _PERF_TARGET_H
3 
4 #include <stdbool.h>
5 #include <sys/types.h>
6 
7 struct perf_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 };
16 
17 enum perf_target_errno {
18 	PERF_ERRNO_TARGET__SUCCESS		= 0,
19 
20 	/*
21 	 * Choose an arbitrary negative big number not to clash with standard
22 	 * errno since SUS requires the errno has distinct positive values.
23 	 * See 'Issue 6' in the link below.
24 	 *
25 	 * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
26 	 */
27 	__PERF_ERRNO_TARGET__START		= -10000,
28 
29 
30 	/* for perf_target__validate() */
31 	PERF_ERRNO_TARGET__PID_OVERRIDE_CPU	= __PERF_ERRNO_TARGET__START,
32 	PERF_ERRNO_TARGET__PID_OVERRIDE_UID,
33 	PERF_ERRNO_TARGET__UID_OVERRIDE_CPU,
34 	PERF_ERRNO_TARGET__PID_OVERRIDE_SYSTEM,
35 	PERF_ERRNO_TARGET__UID_OVERRIDE_SYSTEM,
36 
37 	/* for perf_target__parse_uid() */
38 	PERF_ERRNO_TARGET__INVALID_UID,
39 	PERF_ERRNO_TARGET__USER_NOT_FOUND,
40 
41 	__PERF_ERRNO_TARGET__END,
42 };
43 
44 enum perf_target_errno perf_target__validate(struct perf_target *target);
45 enum perf_target_errno perf_target__parse_uid(struct perf_target *target);
46 
47 int perf_target__strerror(struct perf_target *target, int errnum, char *buf,
48 			  size_t buflen);
49 
perf_target__has_task(struct perf_target * target)50 static inline bool perf_target__has_task(struct perf_target *target)
51 {
52 	return target->tid || target->pid || target->uid_str;
53 }
54 
perf_target__has_cpu(struct perf_target * target)55 static inline bool perf_target__has_cpu(struct perf_target *target)
56 {
57 	return target->system_wide || target->cpu_list;
58 }
59 
perf_target__none(struct perf_target * target)60 static inline bool perf_target__none(struct perf_target *target)
61 {
62 	return !perf_target__has_task(target) && !perf_target__has_cpu(target);
63 }
64 
65 #endif /* _PERF_TARGET_H */
66