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
 
 
 
 
 
12struct perf_data_file {
13	char		*path;
14	int		 fd;
 
 
 
15	unsigned long	 size;
16};
17
18struct perf_data {
19	const char		*path;
20	struct perf_data_file	 file;
21	bool			 is_pipe;
22	bool			 is_dir;
23	bool			 force;
 
 
24	enum perf_data_mode	 mode;
25
26	struct {
27		u64			 version;
28		struct perf_data_file	*files;
29		int			 nr;
30	} dir;
31};
32
33static inline bool perf_data__is_read(struct perf_data *data)
34{
35	return data->mode == PERF_DATA_MODE_READ;
36}
37
38static inline bool perf_data__is_write(struct perf_data *data)
39{
40	return data->mode == PERF_DATA_MODE_WRITE;
41}
42
43static inline int perf_data__is_pipe(struct perf_data *data)
44{
45	return data->is_pipe;
46}
47
48static inline bool perf_data__is_dir(struct perf_data *data)
49{
50	return data->is_dir;
51}
52
 
 
 
 
 
53static inline int perf_data__fd(struct perf_data *data)
54{
 
 
 
55	return data->file.fd;
56}
57
58int perf_data__open(struct perf_data *data);
59void perf_data__close(struct perf_data *data);
 
60ssize_t perf_data__write(struct perf_data *data,
61			      void *buf, size_t size);
62ssize_t perf_data_file__write(struct perf_data_file *file,
63			      void *buf, size_t size);
64/*
65 * If at_exit is set, only rename current perf.data to
66 * perf.data.<postfix>, continue write on original data.
67 * Set at_exit when flushing the last output.
68 *
69 * Return value is fd of new output.
70 */
71int perf_data__switch(struct perf_data *data,
72			   const char *postfix,
73			   size_t pos, bool at_exit, char **new_filepath);
74
75int perf_data__create_dir(struct perf_data *data, int nr);
76int perf_data__open_dir(struct perf_data *data);
77void perf_data__close_dir(struct perf_data *data);
78int perf_data__update_dir(struct perf_data *data);
79unsigned long perf_data__size(struct perf_data *data);
 
 
 
 
 
80#endif /* __PERF_DATA_H */

  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 <unistd.h>
  8#include <linux/types.h>
  9
 10enum perf_data_mode {
 11	PERF_DATA_MODE_WRITE,
 12	PERF_DATA_MODE_READ,
 13};
 14
 15enum perf_dir_version {
 16	PERF_DIR_SINGLE_FILE	= 0,
 17	PERF_DIR_VERSION	= 1,
 18};
 19
 20struct perf_data_file {
 21	char		*path;
 22	union {
 23		int	 fd;
 24		FILE	*fptr;
 25	};
 26	unsigned long	 size;
 27};
 28
 29struct perf_data {
 30	const char		*path;
 31	struct perf_data_file	 file;
 32	bool			 is_pipe;
 33	bool			 is_dir;
 34	bool			 force;
 35	bool			 use_stdio;
 36	bool			 in_place_update;
 37	enum perf_data_mode	 mode;
 38
 39	struct {
 40		u64			 version;
 41		struct perf_data_file	*files;
 42		int			 nr;
 43	} dir;
 44};
 45
 46static inline bool perf_data__is_read(struct perf_data *data)
 47{
 48	return data->mode == PERF_DATA_MODE_READ;
 49}
 50
 51static inline bool perf_data__is_write(struct perf_data *data)
 52{
 53	return data->mode == PERF_DATA_MODE_WRITE;
 54}
 55
 56static inline int perf_data__is_pipe(struct perf_data *data)
 57{
 58	return data->is_pipe;
 59}
 60
 61static inline bool perf_data__is_dir(struct perf_data *data)
 62{
 63	return data->is_dir;
 64}
 65
 66static inline bool perf_data__is_single_file(struct perf_data *data)
 67{
 68	return data->dir.version == PERF_DIR_SINGLE_FILE;
 69}
 70
 71static inline int perf_data__fd(struct perf_data *data)
 72{
 73	if (data->use_stdio)
 74		return fileno(data->file.fptr);
 75
 76	return data->file.fd;
 77}
 78
 79int perf_data__open(struct perf_data *data);
 80void perf_data__close(struct perf_data *data);
 81ssize_t perf_data__read(struct perf_data *data, void *buf, size_t size);
 82ssize_t perf_data__write(struct perf_data *data,
 83			      void *buf, size_t size);
 84ssize_t perf_data_file__write(struct perf_data_file *file,
 85			      void *buf, size_t size);
 86/*
 87 * If at_exit is set, only rename current perf.data to
 88 * perf.data.<postfix>, continue write on original data.
 89 * Set at_exit when flushing the last output.
 90 *
 91 * Return value is fd of new output.
 92 */
 93int perf_data__switch(struct perf_data *data,
 94			   const char *postfix,
 95			   size_t pos, bool at_exit, char **new_filepath);
 96
 97int perf_data__create_dir(struct perf_data *data, int nr);
 98int perf_data__open_dir(struct perf_data *data);
 99void perf_data__close_dir(struct perf_data *data);
100int perf_data__update_dir(struct perf_data *data);
101unsigned long perf_data__size(struct perf_data *data);
102int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz);
103bool has_kcore_dir(const char *path);
104char *perf_data__kallsyms_name(struct perf_data *data);
105char *perf_data__guest_kallsyms_name(struct perf_data *data, pid_t machine_pid);
106bool is_perf_data(const char *path);
107#endif /* __PERF_DATA_H */