GNU Linux-libre 4.19.211-gnu1
[releases.git] / 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 */