Linux kernel mirror (for testing)
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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
8enum perf_data_mode {
9 PERF_DATA_MODE_WRITE,
10 PERF_DATA_MODE_READ,
11};
12
13enum perf_dir_version {
14 PERF_DIR_SINGLE_FILE = 0,
15 PERF_DIR_VERSION = 1,
16};
17
18struct perf_data_file {
19 char *path;
20 union {
21 int fd;
22 FILE *fptr;
23 };
24 unsigned long size;
25};
26
27struct 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
44static inline bool perf_data__is_read(struct perf_data *data)
45{
46 return data->mode == PERF_DATA_MODE_READ;
47}
48
49static inline bool perf_data__is_write(struct perf_data *data)
50{
51 return data->mode == PERF_DATA_MODE_WRITE;
52}
53
54static inline int perf_data__is_pipe(struct perf_data *data)
55{
56 return data->is_pipe;
57}
58
59static inline bool perf_data__is_dir(struct perf_data *data)
60{
61 return data->is_dir;
62}
63
64static inline bool perf_data__is_single_file(struct perf_data *data)
65{
66 return data->dir.version == PERF_DIR_SINGLE_FILE;
67}
68
69static 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
77int perf_data__open(struct perf_data *data);
78void perf_data__close(struct perf_data *data);
79ssize_t perf_data__read(struct perf_data *data, void *buf, size_t size);
80ssize_t perf_data__write(struct perf_data *data,
81 void *buf, size_t size);
82ssize_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 */
91int perf_data__switch(struct perf_data *data,
92 const char *postfix,
93 size_t pos, bool at_exit, char **new_filepath);
94
95int perf_data__create_dir(struct perf_data *data, int nr);
96int perf_data__open_dir(struct perf_data *data);
97void perf_data__close_dir(struct perf_data *data);
98int perf_data__update_dir(struct perf_data *data);
99unsigned long perf_data__size(struct perf_data *data);
100int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz);
101char *perf_data__kallsyms_name(struct perf_data *data);
102bool is_perf_data(const char *path);
103#endif /* __PERF_DATA_H */