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