1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef SIMPLE_PERF_EVENT_H_
18#define SIMPLE_PERF_EVENT_H_
19
20#include <stdint.h>
21#include <memory>
22#include <string>
23#include <vector>
24
25// A uint32_t value far from 0 is picked, so it is unlikely to conflict with further
26// PERF_TYPE_* events.
27static constexpr uint32_t SIMPLEPERF_TYPE_USER_SPACE_SAMPLERS = 32768;
28
29enum {
30  SIMPLEPERF_CONFIG_INPLACE_SAMPLER,
31};
32
33// EventType represents one type of event, like cpu_cycle_event, cache_misses_event.
34// The user knows one event type by its name, and the kernel knows one event type by its
35// (type, config) pair. EventType connects the two representations, and tells the user if
36// the event type is supported by the kernel.
37
38struct EventType {
39  EventType(const std::string& name, uint32_t type, uint64_t config)
40      : name(name), type(type), config(config) {
41  }
42
43  EventType() : type(0), config(0) {
44  }
45
46  std::string name;
47  uint32_t type;
48  uint64_t config;
49};
50
51const std::vector<EventType>& GetAllEventTypes();
52const EventType* FindEventTypeByName(const std::string& name);
53
54struct EventTypeAndModifier {
55  std::string name;
56  EventType event_type;
57  std::string modifier;
58  bool exclude_user;
59  bool exclude_kernel;
60  bool exclude_hv;
61  bool exclude_host;
62  bool exclude_guest;
63  int precise_ip : 2;
64
65  EventTypeAndModifier()
66      : exclude_user(false),
67        exclude_kernel(false),
68        exclude_hv(false),
69        exclude_host(false),
70        exclude_guest(false),
71        precise_ip(0) {
72  }
73};
74
75std::unique_ptr<EventTypeAndModifier> ParseEventType(const std::string& event_type_str);
76
77#endif  // SIMPLE_PERF_EVENT_H_
78