Root/tools/perf/util/header.h

1#ifndef __PERF_HEADER_H
2#define __PERF_HEADER_H
3
4#include "../../../include/linux/perf_event.h"
5#include <sys/types.h>
6#include <stdbool.h>
7#include "types.h"
8#include "event.h"
9
10#include <linux/bitmap.h>
11
12struct perf_header_attr {
13    struct perf_event_attr attr;
14    int ids, size;
15    u64 *id;
16    off_t id_offset;
17};
18
19enum {
20    HEADER_TRACE_INFO = 1,
21    HEADER_BUILD_ID,
22    HEADER_LAST_FEATURE,
23};
24
25#define HEADER_FEAT_BITS 256
26
27struct perf_file_section {
28    u64 offset;
29    u64 size;
30};
31
32struct perf_file_header {
33    u64 magic;
34    u64 size;
35    u64 attr_size;
36    struct perf_file_section attrs;
37    struct perf_file_section data;
38    struct perf_file_section event_types;
39    DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
40};
41
42struct perf_header;
43
44int perf_file_header__read(struct perf_file_header *self,
45               struct perf_header *ph, int fd);
46
47struct perf_header {
48    int frozen;
49    int attrs, size;
50    struct perf_header_attr **attr;
51    s64 attr_offset;
52    u64 data_offset;
53    u64 data_size;
54    u64 event_offset;
55    u64 event_size;
56    bool needs_swap;
57    DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
58};
59
60int perf_header__init(struct perf_header *self);
61void perf_header__exit(struct perf_header *self);
62
63int perf_header__read(struct perf_header *self, int fd);
64int perf_header__write(struct perf_header *self, int fd, bool at_exit);
65
66int perf_header__add_attr(struct perf_header *self,
67              struct perf_header_attr *attr);
68
69int perf_header__push_event(u64 id, const char *name);
70char *perf_header__find_event(u64 id);
71
72struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr);
73void perf_header_attr__delete(struct perf_header_attr *self);
74
75int perf_header_attr__add_id(struct perf_header_attr *self, u64 id);
76
77u64 perf_header__sample_type(struct perf_header *header);
78struct perf_event_attr *
79perf_header__find_attr(u64 id, struct perf_header *header);
80void perf_header__set_feat(struct perf_header *self, int feat);
81bool perf_header__has_feat(const struct perf_header *self, int feat);
82
83int perf_header__process_sections(struct perf_header *self, int fd,
84                  int (*process)(struct perf_file_section *self,
85                         struct perf_header *ph,
86                         int feat, int fd));
87
88int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
89              const char *name, bool is_kallsyms);
90int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir);
91
92#endif /* __PERF_HEADER_H */
93

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