tools/perf/util/ordered-events.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ORDERED_EVENTS_H
   3 #define __ORDERED_EVENTS_H
   4
   5 #include <linux/types.h>
   6
   7 struct perf_sample;
   8
   9 struct ordered_event {
  10         u64                     timestamp;
  11         u64                     file_offset;
  12         union perf_event        *event;
  13         struct list_head        list;
  14 };
  15
  16 enum oe_flush {
  17         OE_FLUSH__NONE,
  18         OE_FLUSH__FINAL,
  19         OE_FLUSH__ROUND,
  20         OE_FLUSH__HALF,
  21 };
  22
  23 struct ordered_events;
  24
  25 typedef int (*ordered_events__deliver_t)(struct ordered_events *oe,
  26                                          struct ordered_event *event);
  27
  28 struct ordered_events {
  29         u64                     last_flush;
  30         u64                     next_flush;
  31         u64                     max_timestamp;
  32         u64                     max_alloc_size;
  33         u64                     cur_alloc_size;
  34         struct list_head        events;
  35         struct list_head        cache;
  36         struct list_head        to_free;
  37         struct ordered_event    *buffer;
  38         struct ordered_event    *last;
  39         ordered_events__deliver_t deliver;
  40         int                     buffer_idx;
  41         unsigned int            nr_events;
  42         enum oe_flush           last_flush_type;
  43         u32                     nr_unordered_events;
  44         bool                    copy_on_queue;
  45 };
  46
  47 int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
  48                           u64 timestamp, u64 file_offset);
  49 void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event);
  50 int ordered_events__flush(struct ordered_events *oe, enum oe_flush how);
  51 void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver);
  52 void ordered_events__free(struct ordered_events *oe);
  53 void ordered_events__reinit(struct ordered_events *oe);
  54
  55 static inline
  56 void ordered_events__set_alloc_size(struct ordered_events *oe, u64 size)
  57 {
  58         oe->max_alloc_size = size;
  59 }
  60
  61 static inline
  62 void ordered_events__set_copy_on_queue(struct ordered_events *oe, bool copy)
  63 {
  64         oe->copy_on_queue = copy;
  65 }
  66 #endif /* __ORDERED_EVENTS_H */