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 <stdio.h>
6#include <stdbool.h>
7#include <linux/types.h>
8
9enum perf_data_mode {
10 PERF_DATA_MODE_WRITE,
11 PERF_DATA_MODE_READ,
12};
13
14enum perf_dir_version {
15 PERF_DIR_SINGLE_FILE = 0,
16 PERF_DIR_VERSION = 1,
17};
18
19struct perf_data_file {
20 char *path;
21 union {
22 int fd;
23 FILE *fptr;
24 };
25 unsigned long size;
26};
27
28struct perf_data {
29 const char *path;
30 struct perf_data_file file;
31 bool is_pipe;
32 bool is_dir;
33 bool force;
34 bool use_stdio;
35 bool in_place_update;
36 enum perf_data_mode mode;
37
38 struct {
39 u64 version;
40 struct perf_data_file *files;
41 int nr;
42 } dir;
43};
44
45static inline bool perf_data__is_read(struct perf_data *data)
46{
47 return data->mode == PERF_DATA_MODE_READ;
48}
49
50static inline bool perf_data__is_write(struct perf_data *data)
51{
52 return data->mode == PERF_DATA_MODE_WRITE;
53}
54
55static inline int perf_data__is_pipe(struct perf_data *data)
56{
57 return data->is_pipe;
58}
59
60static inline bool perf_data__is_dir(struct perf_data *data)
61{
62 return data->is_dir;
63}
64
65static inline bool perf_data__is_single_file(struct perf_data *data)
66{
67 return data->dir.version == PERF_DIR_SINGLE_FILE;
68}
69
70static inline int perf_data__fd(struct perf_data *data)
71{
72 if (data->use_stdio)
73 return fileno(data->file.fptr);
74
75 return data->file.fd;
76}
77
78int perf_data__open(struct perf_data *data);
79void perf_data__close(struct perf_data *data);
80ssize_t perf_data__read(struct perf_data *data, void *buf, size_t size);
81ssize_t perf_data__write(struct perf_data *data,
82 void *buf, size_t size);
83ssize_t perf_data_file__write(struct perf_data_file *file,
84 void *buf, size_t size);
85/*
86 * If at_exit is set, only rename current perf.data to
87 * perf.data.<postfix>, continue write on original data.
88 * Set at_exit when flushing the last output.
89 *
90 * Return value is fd of new output.
91 */
92int perf_data__switch(struct perf_data *data,
93 const char *postfix,
94 size_t pos, bool at_exit, char **new_filepath);
95
96int perf_data__create_dir(struct perf_data *data, int nr);
97int perf_data__open_dir(struct perf_data *data);
98void perf_data__close_dir(struct perf_data *data);
99int perf_data__update_dir(struct perf_data *data);
100unsigned long perf_data__size(struct perf_data *data);
101int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz);
102bool has_kcore_dir(const char *path);
103char *perf_data__kallsyms_name(struct perf_data *data);
104bool is_perf_data(const char *path);
105#endif /* __PERF_DATA_H */