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         const char              *file_path;
  13         union perf_event        *event;
  14         struct list_head        list;
  15 };
  16
  17 enum oe_flush {
  18         OE_FLUSH__NONE,
  19         OE_FLUSH__FINAL,
  20         OE_FLUSH__ROUND,
  21         OE_FLUSH__HALF,
  22         OE_FLUSH__TOP,
  23         OE_FLUSH__TIME,
  24 };
  25
  26 struct ordered_events;
  27
  28 typedef int (*ordered_events__deliver_t)(struct ordered_events *oe,
  29                                          struct ordered_event *event);
  30
  31 struct ordered_events_buffer {
  32         struct list_head        list;
  33         struct ordered_event    event[];
  34 };
  35
  36 struct ordered_events {
  37         u64                              last_flush;
  38         u64                              next_flush;
  39         u64                              max_timestamp;
  40         u64                              max_alloc_size;
  41         u64                              cur_alloc_size;
  42         struct list_head                 events;
  43         struct list_head                 cache;
  44         struct list_head                 to_free;
  45         struct ordered_events_buffer    *buffer;
  46         struct ordered_event            *last;
  47         ordered_events__deliver_t        deliver;
  48         int                              buffer_idx;
  49         unsigned int                     nr_events;
  50         enum oe_flush                    last_flush_type;
  51         u32                              nr_unordered_events;
  52         bool                             copy_on_queue;
  53         void                            *data;
  54 };
  55
  56 int ordered_events__queue(struct ordered_events *oe, union perf_event *event,
  57                           u64 timestamp, u64 file_offset, const char *file_path);
  58 void ordered_events__delete(struct ordered_events *oe, struct ordered_event *event);
  59 int ordered_events__flush(struct ordered_events *oe, enum oe_flush how);
  60 int ordered_events__flush_time(struct ordered_events *oe, u64 timestamp);
  61 void ordered_events__init(struct ordered_events *oe, ordered_events__deliver_t deliver,
  62                           void *data);
  63 void ordered_events__free(struct ordered_events *oe);
  64 void ordered_events__reinit(struct ordered_events *oe);
  65 u64 ordered_events__first_time(struct ordered_events *oe);
  66
  67 static inline
  68 void ordered_events__set_alloc_size(struct ordered_events *oe, u64 size)
  69 {
  70         oe->max_alloc_size = size;
  71 }
  72
  73 static inline
  74 void ordered_events__set_copy_on_queue(struct ordered_events *oe, bool copy)
  75 {
  76         oe->copy_on_queue = copy;
  77 }
  78
  79 static inline u64 ordered_events__last_flush_time(struct ordered_events *oe)
  80 {
  81         return oe->last_flush;
  82 }
  83
  84 #endif /* __ORDERED_EVENTS_H */