| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef SIMPLE_PERF_EVENT_ATTR_H_ |
| #define SIMPLE_PERF_EVENT_ATTR_H_ |
| |
| #include <stdint.h> |
| #include <string> |
| |
| #include "perf_event.h" |
| |
| struct EventType; |
| |
| // EventAttr manages perf_event_attr, which provides detailed configuration information when |
| // opening a perf_event_file. The configuration information tells the kernel how to count and |
| // record events. |
| class EventAttr { |
| public: |
| static EventAttr CreateDefaultAttrToMonitorEvent(const EventType& event_type); |
| |
| EventAttr(const perf_event_attr& attr) : attr_(attr) { |
| } |
| |
| perf_event_attr Attr() const { |
| return attr_; |
| } |
| |
| uint64_t SampleType() const { |
| return attr_.sample_type; |
| } |
| |
| void EnableOnExec() { |
| attr_.enable_on_exec = 1; |
| } |
| |
| void SetSampleFreq(uint64_t freq) { |
| attr_.freq = 1; |
| attr_.sample_freq = freq; |
| } |
| |
| void SetSamplePeriod(uint64_t period) { |
| attr_.freq = 0; |
| attr_.sample_period = period; |
| } |
| |
| void SetSampleAll() { |
| attr_.sample_id_all = 1; |
| } |
| |
| void Dump(size_t indent = 0) const; |
| |
| private: |
| perf_event_attr attr_; |
| }; |
| |
| #endif // SIMPLE_PERF_EVENT_ATTR_H_ |