tools/perf/util/session.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __PERF_SESSION_H
   3 #define __PERF_SESSION_H
   4
   5 #include "trace-event.h"
   6 #include "event.h"
   7 #include "header.h"
   8 #include "machine.h"
   9 #include "data.h"
  10 #include "ordered-events.h"
  11 #include "util/compress.h"
  12 #include <linux/kernel.h>
  13 #include <linux/rbtree.h>
  14 #include <linux/perf_event.h>
  15
  16 struct ip_callchain;
  17 struct symbol;
  18 struct thread;
  19
  20 struct auxtrace;
  21 struct itrace_synth_opts;
  22
  23 struct decomp_data {
  24         struct decomp    *decomp;
  25         struct decomp    *decomp_last;
  26         struct zstd_data *zstd_decomp;
  27 };
  28
  29 struct perf_session {
  30         struct perf_header      header;
  31         struct machines         machines;
  32         struct evlist   *evlist;
  33         struct auxtrace         *auxtrace;
  34         struct itrace_synth_opts *itrace_synth_opts;
  35         struct list_head        auxtrace_index;
  36 #ifdef HAVE_LIBTRACEEVENT
  37         struct trace_event      tevent;
  38 #endif
  39         struct perf_record_time_conv    time_conv;
  40         bool                    repipe;
  41         bool                    one_mmap;
  42         void                    *one_mmap_addr;
  43         u64                     one_mmap_offset;
  44         struct ordered_events   ordered_events;
  45         struct perf_data        *data;
  46         struct perf_tool        *tool;
  47         u64                     bytes_transferred;
  48         u64                     bytes_compressed;
  49         struct zstd_data        zstd_data;
  50         struct decomp_data      decomp_data;
  51         struct decomp_data      *active_decomp;
  52 };
  53
  54 struct decomp {
  55         struct decomp *next;
  56         u64 file_pos;
  57         const char *file_path;
  58         size_t mmap_len;
  59         u64 head;
  60         size_t size;
  61         char data[];
  62 };
  63
  64 struct perf_tool;
  65
  66 struct perf_session *__perf_session__new(struct perf_data *data,
  67                                          bool repipe, int repipe_fd,
  68                                          struct perf_tool *tool);
  69
  70 static inline struct perf_session *perf_session__new(struct perf_data *data,
  71                                                      struct perf_tool *tool)
  72 {
  73         return __perf_session__new(data, false, -1, tool);
  74 }
  75
  76 void perf_session__delete(struct perf_session *session);
  77
  78 void perf_event_header__bswap(struct perf_event_header *hdr);
  79
  80 int perf_session__peek_event(struct perf_session *session, off_t file_offset,
  81                              void *buf, size_t buf_sz,
  82                              union perf_event **event_ptr,
  83                              struct perf_sample *sample);
  84 typedef int (*peek_events_cb_t)(struct perf_session *session,
  85                                 union perf_event *event, u64 offset,
  86                                 void *data);
  87 int perf_session__peek_events(struct perf_session *session, u64 offset,
  88                               u64 size, peek_events_cb_t cb, void *data);
  89
  90 int perf_session__process_events(struct perf_session *session);
  91
  92 int perf_session__queue_event(struct perf_session *s, union perf_event *event,
  93                               u64 timestamp, u64 file_offset, const char *file_path);
  94
  95 void perf_tool__fill_defaults(struct perf_tool *tool);
  96
  97 int perf_session__resolve_callchain(struct perf_session *session,
  98                                     struct evsel *evsel,
  99                                     struct thread *thread,
 100                                     struct ip_callchain *chain,
 101                                     struct symbol **parent);
 102
 103 bool perf_session__has_traces(struct perf_session *session, const char *msg);
 104
 105 void perf_event__attr_swap(struct perf_event_attr *attr);
 106
 107 int perf_session__create_kernel_maps(struct perf_session *session);
 108
 109 void perf_session__set_id_hdr_size(struct perf_session *session);
 110
 111 static inline
 112 struct machine *perf_session__find_machine(struct perf_session *session, pid_t pid)
 113 {
 114         return machines__find(&session->machines, pid);
 115 }
 116
 117 static inline
 118 struct machine *perf_session__findnew_machine(struct perf_session *session, pid_t pid)
 119 {
 120         return machines__findnew(&session->machines, pid);
 121 }
 122
 123 struct thread *perf_session__findnew(struct perf_session *session, pid_t pid);
 124 int perf_session__register_idle_thread(struct perf_session *session);
 125
 126 size_t perf_session__fprintf(struct perf_session *session, FILE *fp);
 127
 128 size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp);
 129
 130 size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
 131                                           bool (fn)(struct dso *dso, int parm), int parm);
 132
 133 size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp,
 134                                        bool skip_empty);
 135
 136 void perf_session__dump_kmaps(struct perf_session *session);
 137
 138 struct evsel *perf_session__find_first_evtype(struct perf_session *session,
 139                                             unsigned int type);
 140
 141 int perf_session__cpu_bitmap(struct perf_session *session,
 142                              const char *cpu_list, unsigned long *cpu_bitmap);
 143
 144 void perf_session__fprintf_info(struct perf_session *s, FILE *fp, bool full);
 145
 146 struct evsel_str_handler;
 147
 148 #define perf_session__set_tracepoints_handlers(session, array) \
 149         __evlist__set_tracepoints_handlers(session->evlist, array, ARRAY_SIZE(array))
 150
 151 extern volatile int session_done;
 152
 153 #define session_done()  READ_ONCE(session_done)
 154
 155 int perf_session__deliver_synth_event(struct perf_session *session,
 156                                       union perf_event *event,
 157                                       struct perf_sample *sample);
 158
 159 int perf_event__process_id_index(struct perf_session *session,
 160                                  union perf_event *event);
 161
 162 int perf_event__process_finished_round(struct perf_tool *tool,
 163                                        union perf_event *event,
 164                                        struct ordered_events *oe);
 165
 166 #endif /* __PERF_SESSION_H */