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session.h
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1 #ifndef __PERF_SESSION_H
2 #define __PERF_SESSION_H
3 
4 #include "hist.h"
5 #include "event.h"
6 #include "header.h"
7 #include "symbol.h"
8 #include "thread.h"
9 #include <linux/rbtree.h>
10 #include <linux/perf_event.h>
11 
12 struct sample_queue;
13 struct ip_callchain;
14 struct thread;
15 
16 struct ordered_samples {
17  u64 last_flush;
18  u64 next_flush;
19  u64 max_timestamp;
20  struct list_head samples;
21  struct list_head sample_cache;
22  struct list_head to_free;
23  struct sample_queue *sample_buffer;
24  struct sample_queue *last_sample;
25  int sample_buffer_idx;
26  unsigned int nr_samples;
27 };
28 
29 struct perf_session {
30  struct perf_header header;
31  unsigned long size;
32  unsigned long mmap_window;
33  struct machine host_machine;
34  struct rb_root machines;
35  struct perf_evlist *evlist;
36  struct pevent *pevent;
37  /*
38  * FIXME: Need to split this up further, we need global
39  * stats + per event stats.
40  */
41  struct hists hists;
42  int fd;
43  bool fd_pipe;
44  bool repipe;
45  int cwdlen;
46  char *cwd;
47  struct ordered_samples ordered_samples;
48  char filename[1];
49 };
50 
51 struct perf_tool;
52 
53 struct perf_session *perf_session__new(const char *filename, int mode,
54  bool force, bool repipe,
55  struct perf_tool *tool);
56 void perf_session__delete(struct perf_session *self);
57 
58 void perf_event_header__bswap(struct perf_event_header *self);
59 
60 int __perf_session__process_events(struct perf_session *self,
61  u64 data_offset, u64 data_size, u64 size,
62  struct perf_tool *tool);
63 int perf_session__process_events(struct perf_session *self,
64  struct perf_tool *tool);
65 
66 int perf_session__resolve_callchain(struct perf_session *self, struct perf_evsel *evsel,
67  struct thread *thread,
68  struct ip_callchain *chain,
69  struct symbol **parent);
70 
71 struct branch_info *machine__resolve_bstack(struct machine *self,
72  struct thread *thread,
73  struct branch_stack *bs);
74 
75 bool perf_session__has_traces(struct perf_session *self, const char *msg);
76 
77 void mem_bswap_64(void *src, int byte_size);
78 void mem_bswap_32(void *src, int byte_size);
79 void perf_event__attr_swap(struct perf_event_attr *attr);
80 
81 int perf_session__create_kernel_maps(struct perf_session *self);
82 
83 void perf_session__set_id_hdr_size(struct perf_session *session);
84 void perf_session__remove_thread(struct perf_session *self, struct thread *th);
85 
86 static inline
87 struct machine *perf_session__find_host_machine(struct perf_session *self)
88 {
89  return &self->host_machine;
90 }
91 
92 static inline
93 struct machine *perf_session__find_machine(struct perf_session *self, pid_t pid)
94 {
95  if (pid == HOST_KERNEL_ID)
96  return &self->host_machine;
97  return machines__find(&self->machines, pid);
98 }
99 
100 static inline
101 struct machine *perf_session__findnew_machine(struct perf_session *self, pid_t pid)
102 {
103  if (pid == HOST_KERNEL_ID)
104  return &self->host_machine;
105  return machines__findnew(&self->machines, pid);
106 }
107 
108 static inline
109 void perf_session__process_machines(struct perf_session *self,
110  struct perf_tool *tool,
111  machine__process_t process)
112 {
113  process(&self->host_machine, tool);
114  return machines__process(&self->machines, process, tool);
115 }
116 
117 struct thread *perf_session__findnew(struct perf_session *self, pid_t pid);
118 size_t perf_session__fprintf(struct perf_session *self, FILE *fp);
119 
120 size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp);
121 
122 size_t perf_session__fprintf_dsos_buildid(struct perf_session *self,
123  FILE *fp, bool with_hits);
124 
125 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp);
126 
127 struct perf_evsel *perf_session__find_first_evtype(struct perf_session *session,
128  unsigned int type);
129 
130 void perf_evsel__print_ip(struct perf_evsel *evsel, union perf_event *event,
131  struct perf_sample *sample, struct machine *machine,
132  int print_sym, int print_dso, int print_symoffset);
133 
134 int perf_session__cpu_bitmap(struct perf_session *session,
135  const char *cpu_list, unsigned long *cpu_bitmap);
136 
137 void perf_session__fprintf_info(struct perf_session *s, FILE *fp, bool full);
138 
139 struct perf_evsel_str_handler;
140 
141 int __perf_session__set_tracepoints_handlers(struct perf_session *session,
142  const struct perf_evsel_str_handler *assocs,
143  size_t nr_assocs);
144 
145 #define perf_session__set_tracepoints_handlers(session, array) \
146  __perf_session__set_tracepoints_handlers(session, array, ARRAY_SIZE(array))
147 #endif /* __PERF_SESSION_H */
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