2 * Copyright (C) 2015 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef SIMPLE_PERF_EVENT_ATTR_H_
18 #define SIMPLE_PERF_EVENT_ATTR_H_
23 #include "perf_event.h"
27 // EventAttr manages perf_event_attr, which provides detailed configuration information when
28 // opening a perf_event_file. The configuration information tells the kernel how to count and
32 static EventAttr CreateDefaultAttrToMonitorEvent(const EventType& event_type);
34 EventAttr(const perf_event_attr& attr) : attr_(attr) {
37 perf_event_attr Attr() const {
41 uint64_t SampleType() const {
42 return attr_.sample_type;
46 attr_.enable_on_exec = 1;
49 void SetSampleFreq(uint64_t freq) {
51 attr_.sample_freq = freq;
54 void SetSamplePeriod(uint64_t period) {
56 attr_.sample_period = period;
60 attr_.sample_id_all = 1;
63 void Dump(size_t indent = 0) const;
66 perf_event_attr attr_;
69 #endif // SIMPLE_PERF_EVENT_ATTR_H_