| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef _PERF_TARGET_H |
| 3 | #define _PERF_TARGET_H |
| 4 | |
| 5 | #include <stdbool.h> |
| 6 | #include <sys/types.h> |
| 7 | |
| 8 | struct target { |
| 9 | const char *pid; |
| 10 | const char *tid; |
| 11 | const char *cpu_list; |
| 12 | const char *uid_str; |
| 13 | uid_t uid; |
| 14 | bool system_wide; |
| 15 | bool uses_mmap; |
| 16 | bool default_per_cpu; |
| 17 | bool per_thread; |
| 18 | }; |
| 19 | |
| 20 | enum target_errno { |
| 21 | TARGET_ERRNO__SUCCESS = 0, |
| 22 | |
| 23 | /* |
| 24 | * Choose an arbitrary negative big number not to clash with standard |
| 25 | * errno since SUS requires the errno has distinct positive values. |
| 26 | * See 'Issue 6' in the link below. |
| 27 | * |
| 28 | * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html |
| 29 | */ |
| 30 | __TARGET_ERRNO__START = -10000, |
| 31 | |
| 32 | /* for target__validate() */ |
| 33 | TARGET_ERRNO__PID_OVERRIDE_CPU = __TARGET_ERRNO__START, |
| 34 | TARGET_ERRNO__PID_OVERRIDE_UID, |
| 35 | TARGET_ERRNO__UID_OVERRIDE_CPU, |
| 36 | TARGET_ERRNO__PID_OVERRIDE_SYSTEM, |
| 37 | TARGET_ERRNO__UID_OVERRIDE_SYSTEM, |
| 38 | TARGET_ERRNO__SYSTEM_OVERRIDE_THREAD, |
| 39 | |
| 40 | /* for target__parse_uid() */ |
| 41 | TARGET_ERRNO__INVALID_UID, |
| 42 | TARGET_ERRNO__USER_NOT_FOUND, |
| 43 | |
| 44 | __TARGET_ERRNO__END, |
| 45 | }; |
| 46 | |
| 47 | enum target_errno target__validate(struct target *target); |
| 48 | enum target_errno target__parse_uid(struct target *target); |
| 49 | |
| 50 | int target__strerror(struct target *target, int errnum, char *buf, size_t buflen); |
| 51 | |
| 52 | static inline bool target__has_task(struct target *target) |
| 53 | { |
| 54 | return target->tid || target->pid || target->uid_str; |
| 55 | } |
| 56 | |
| 57 | static inline bool target__has_cpu(struct target *target) |
| 58 | { |
| 59 | return target->system_wide || target->cpu_list; |
| 60 | } |
| 61 | |
| 62 | static inline bool target__none(struct target *target) |
| 63 | { |
| 64 | return !target__has_task(target) && !target__has_cpu(target); |
| 65 | } |
| 66 | |
| 67 | static inline bool target__has_per_thread(struct target *target) |
| 68 | { |
| 69 | return target->system_wide && target->per_thread; |
| 70 | } |
| 71 | |
| 72 | static inline bool target__uses_dummy_map(struct target *target) |
| 73 | { |
| 74 | bool use_dummy = false; |
| 75 | |
| 76 | if (target->default_per_cpu) |
| 77 | use_dummy = target->per_thread ? true : false; |
| 78 | else if (target__has_task(target) || |
| 79 | (!target__has_cpu(target) && !target->uses_mmap)) |
| 80 | use_dummy = true; |
| 81 | else if (target__has_per_thread(target)) |
| 82 | use_dummy = true; |
| 83 | |
| 84 | return use_dummy; |
| 85 | } |
| 86 | |
| 87 | #endif /* _PERF_TARGET_H */ |