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 */