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
  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 */