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_ATTR_H_
18 #define SIMPLE_PERF_EVENT_ATTR_H_
19 
20 #include <stddef.h>
21 
22 #include <string>
23 #include <vector>
24 
25 #include "perf_event.h"
26 
27 struct EventType;
28 
29 struct EventAttrWithId {
30   const perf_event_attr* attr;
31   std::vector<uint64_t> ids;
32 };
33 
34 perf_event_attr CreateDefaultPerfEventAttr(const EventType& event_type);
35 void DumpPerfEventAttr(const perf_event_attr& attr, size_t indent = 0);
36 bool GetCommonEventIdPositionsForAttrs(std::vector<perf_event_attr>& attrs,
37                                        size_t* event_id_pos_in_sample_records,
38                                        size_t* event_id_reverse_pos_in_non_sample_records);
39 bool IsTimestampSupported(const perf_event_attr& attr);
40 bool IsCpuSupported(const perf_event_attr& attr);
41 // Return event name with modifier if the event is found, otherwise return "unknown".
42 // This function is slow for using linear search, so only used when reporting.
43 std::string GetEventNameByAttr(const perf_event_attr& attr);
44 
45 #endif  // SIMPLE_PERF_EVENT_ATTR_H_
46