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