1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef __PERF_DATA_H |
3 | #define __PERF_DATA_H |
4 | |
5 | #include <stdio.h> |
6 | #include <stdbool.h> |
7 | #include <unistd.h> |
8 | #include <linux/types.h> |
9 | |
10 | enum perf_data_mode { |
11 | PERF_DATA_MODE_WRITE, |
12 | PERF_DATA_MODE_READ, |
13 | }; |
14 | |
15 | enum perf_dir_version { |
16 | PERF_DIR_SINGLE_FILE = 0, |
17 | PERF_DIR_VERSION = 1, |
18 | }; |
19 | |
20 | struct perf_data_file { |
21 | char *path; |
22 | union { |
23 | int fd; |
24 | FILE *fptr; |
25 | }; |
26 | unsigned long size; |
27 | }; |
28 | |
29 | struct perf_data { |
30 | const char *path; |
31 | struct perf_data_file file; |
32 | bool is_pipe; |
33 | bool is_dir; |
34 | bool force; |
35 | bool use_stdio; |
36 | bool in_place_update; |
37 | enum perf_data_mode mode; |
38 | |
39 | struct { |
40 | u64 version; |
41 | struct perf_data_file *files; |
42 | int nr; |
43 | } dir; |
44 | }; |
45 | |
46 | static inline bool perf_data__is_read(struct perf_data *data) |
47 | { |
48 | return data->mode == PERF_DATA_MODE_READ; |
49 | } |
50 | |
51 | static inline bool perf_data__is_write(struct perf_data *data) |
52 | { |
53 | return data->mode == PERF_DATA_MODE_WRITE; |
54 | } |
55 | |
56 | static inline int perf_data__is_pipe(struct perf_data *data) |
57 | { |
58 | return data->is_pipe; |
59 | } |
60 | |
61 | static inline bool perf_data__is_dir(struct perf_data *data) |
62 | { |
63 | return data->is_dir; |
64 | } |
65 | |
66 | static inline bool perf_data__is_single_file(struct perf_data *data) |
67 | { |
68 | return data->dir.version == PERF_DIR_SINGLE_FILE; |
69 | } |
70 | |
71 | static inline int perf_data__fd(struct perf_data *data) |
72 | { |
73 | if (data->use_stdio) |
74 | return fileno(data->file.fptr); |
75 | |
76 | return data->file.fd; |
77 | } |
78 | |
79 | int perf_data__open(struct perf_data *data); |
80 | void perf_data__close(struct perf_data *data); |
81 | ssize_t perf_data__read(struct perf_data *data, void *buf, size_t size); |
82 | ssize_t perf_data__write(struct perf_data *data, |
83 | void *buf, size_t size); |
84 | ssize_t perf_data_file__write(struct perf_data_file *file, |
85 | void *buf, size_t size); |
86 | /* |
87 | * If at_exit is set, only rename current perf.data to |
88 | * perf.data.<postfix>, continue write on original data. |
89 | * Set at_exit when flushing the last output. |
90 | * |
91 | * Return value is fd of new output. |
92 | */ |
93 | int perf_data__switch(struct perf_data *data, |
94 | const char *postfix, |
95 | size_t pos, bool at_exit, char **new_filepath); |
96 | |
97 | int perf_data__create_dir(struct perf_data *data, int nr); |
98 | int perf_data__open_dir(struct perf_data *data); |
99 | void perf_data__close_dir(struct perf_data *data); |
100 | int perf_data__update_dir(struct perf_data *data); |
101 | unsigned long perf_data__size(struct perf_data *data); |
102 | int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz); |
103 | bool has_kcore_dir(const char *path); |
104 | char *perf_data__kallsyms_name(struct perf_data *data); |
105 | char *perf_data__guest_kallsyms_name(struct perf_data *data, pid_t machine_pid); |
106 | bool is_perf_data(const char *path); |
107 | #endif /* __PERF_DATA_H */ |
108 | |