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