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