1 #ifndef _PERF_TARGET_H
2 #define _PERF_TARGET_H
3
4 #include <stdbool.h>
5 #include <sys/types.h>
6
7 struct 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
19 enum 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
46 enum target_errno target__validate(struct target *target);
47 enum target_errno target__parse_uid(struct target *target);
48
49 int target__strerror(struct target *target, int errnum, char *buf, size_t buflen);
50
target__has_task(struct target * target)51 static inline bool target__has_task(struct target *target)
52 {
53 return target->tid || target->pid || target->uid_str;
54 }
55
target__has_cpu(struct target * target)56 static inline bool target__has_cpu(struct target *target)
57 {
58 return target->system_wide || target->cpu_list;
59 }
60
target__none(struct target * target)61 static inline bool target__none(struct target *target)
62 {
63 return !target__has_task(target) && !target__has_cpu(target);
64 }
65
target__uses_dummy_map(struct target * target)66 static 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