tools/perf/util/session.h

   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 "../../../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 };
  27
  28 struct perf_session {
  29         struct perf_header      header;
  30         unsigned long           size;
  31         unsigned long           mmap_window;
  32         struct rb_root          threads;
  33         struct list_head        dead_threads;
  34         struct thread           *last_match;
  35         struct machine          host_machine;
  36         struct rb_root          machines;
  37         struct perf_evlist      *evlist;
  38         /*
  39          * FIXME: Need to split this up further, we need global
  40          *        stats + per event stats. 'perf diff' also needs
  41          *        to properly support multiple events in a single
  42          *        perf.data file.
  43          */
  44         struct hists            hists;
  45         u64                     sample_type;
  46         int                     fd;
  47         bool                    fd_pipe;
  48         bool                    repipe;
  49         bool                    sample_id_all;
  50         u16                     id_hdr_size;
  51         int                     cwdlen;
  52         char                    *cwd;
  53         struct ordered_samples  ordered_samples;
  54         struct callchain_cursor callchain_cursor;
  55         char                    filename[0];
  56 };
  57
  58 struct perf_evsel;
  59 struct perf_event_ops;
  60
  61 typedef int (*event_sample)(union perf_event *event, struct perf_sample *sample,
  62                             struct perf_evsel *evsel, struct perf_session *session);
  63 typedef int (*event_op)(union perf_event *self, struct perf_sample *sample,
  64                         struct perf_session *session);
  65 typedef int (*event_synth_op)(union perf_event *self,
  66                               struct perf_session *session);
  67 typedef int (*event_op2)(union perf_event *self, struct perf_session *session,
  68                          struct perf_event_ops *ops);
  69
  70 struct perf_event_ops {
  71         event_sample    sample;
  72         event_op        mmap,
  73                         comm,
  74                         fork,
  75                         exit,
  76                         lost,
  77                         read,
  78                         throttle,
  79                         unthrottle;
  80         event_synth_op  attr,
  81                         event_type,
  82                         tracing_data,
  83                         build_id;
  84         event_op2       finished_round;
  85         bool            ordered_samples;
  86         bool            ordering_requires_timestamps;
  87 };
  88
  89 struct perf_session *perf_session__new(const char *filename, int mode,
  90                                        bool force, bool repipe,
  91                                        struct perf_event_ops *ops);
  92 void perf_session__delete(struct perf_session *self);
  93
  94 void perf_event_header__bswap(struct perf_event_header *self);
  95
  96 int __perf_session__process_events(struct perf_session *self,
  97                                    u64 data_offset, u64 data_size, u64 size,
  98                                    struct perf_event_ops *ops);
  99 int perf_session__process_events(struct perf_session *self,
 100                                  struct perf_event_ops *event_ops);
 101
 102 int perf_session__resolve_callchain(struct perf_session *self,
 103                                     struct thread *thread,
 104                                     struct ip_callchain *chain,
 105                                     struct symbol **parent);
 106
 107 bool perf_session__has_traces(struct perf_session *self, const char *msg);
 108
 109 int perf_session__set_kallsyms_ref_reloc_sym(struct map **maps,
 110                                              const char *symbol_name,
 111                                              u64 addr);
 112
 113 void mem_bswap_64(void *src, int byte_size);
 114
 115 int perf_session__create_kernel_maps(struct perf_session *self);
 116
 117 void perf_session__update_sample_type(struct perf_session *self);
 118 void perf_session__remove_thread(struct perf_session *self, struct thread *th);
 119
 120 static inline
 121 struct machine *perf_session__find_host_machine(struct perf_session *self)
 122 {
 123         return &self->host_machine;
 124 }
 125
 126 static inline
 127 struct machine *perf_session__find_machine(struct perf_session *self, pid_t pid)
 128 {
 129         if (pid == HOST_KERNEL_ID)
 130                 return &self->host_machine;
 131         return machines__find(&self->machines, pid);
 132 }
 133
 134 static inline
 135 struct machine *perf_session__findnew_machine(struct perf_session *self, pid_t pid)
 136 {
 137         if (pid == HOST_KERNEL_ID)
 138                 return &self->host_machine;
 139         return machines__findnew(&self->machines, pid);
 140 }
 141
 142 static inline
 143 void perf_session__process_machines(struct perf_session *self,
 144                                     machine__process_t process)
 145 {
 146         process(&self->host_machine, self);
 147         return machines__process(&self->machines, process, self);
 148 }
 149
 150 size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp);
 151
 152 size_t perf_session__fprintf_dsos_buildid(struct perf_session *self,
 153                                           FILE *fp, bool with_hits);
 154
 155 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp);
 156
 157 static inline int perf_session__parse_sample(struct perf_session *session,
 158                                              const union perf_event *event,
 159                                              struct perf_sample *sample)
 160 {
 161         return perf_event__parse_sample(event, session->sample_type,
 162                                         session->sample_id_all, sample);
 163 }
 164
 165 void perf_session__print_symbols(union perf_event *event,
 166                                  struct perf_sample *sample,
 167                                  struct perf_session *session);
 168
 169 #endif /* __PERF_SESSION_H */