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