Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __PERF_DATA_H
3#define __PERF_DATA_H
4
5#include <stdbool.h>
6
7enum perf_data_mode {
8 PERF_DATA_MODE_WRITE,
9 PERF_DATA_MODE_READ,
10};
11
12enum perf_dir_version {
13 PERF_DIR_SINGLE_FILE = 0,
14 PERF_DIR_VERSION = 1,
15};
16
17struct perf_data_file {
18 char *path;
19 int fd;
20 unsigned long size;
21};
22
23struct 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
38static inline bool perf_data__is_read(struct perf_data *data)
39{
40 return data->mode == PERF_DATA_MODE_READ;
41}
42
43static inline bool perf_data__is_write(struct perf_data *data)
44{
45 return data->mode == PERF_DATA_MODE_WRITE;
46}
47
48static inline int perf_data__is_pipe(struct perf_data *data)
49{
50 return data->is_pipe;
51}
52
53static inline bool perf_data__is_dir(struct perf_data *data)
54{
55 return data->is_dir;
56}
57
58static inline bool perf_data__is_single_file(struct perf_data *data)
59{
60 return data->dir.version == PERF_DIR_SINGLE_FILE;
61}
62
63static inline int perf_data__fd(struct perf_data *data)
64{
65 return data->file.fd;
66}
67
68int perf_data__open(struct perf_data *data);
69void perf_data__close(struct perf_data *data);
70ssize_t perf_data__write(struct perf_data *data,
71 void *buf, size_t size);
72ssize_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 */
81int perf_data__switch(struct perf_data *data,
82 const char *postfix,
83 size_t pos, bool at_exit, char **new_filepath);
84
85int perf_data__create_dir(struct perf_data *data, int nr);
86int perf_data__open_dir(struct perf_data *data);
87void perf_data__close_dir(struct perf_data *data);
88int perf_data__update_dir(struct perf_data *data);
89unsigned long perf_data__size(struct perf_data *data);
90int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz);
91char *perf_data__kallsyms_name(struct perf_data *data);
92#endif /* __PERF_DATA_H */