* Copyright (c) Huawei Technologies Co., Ltd. 2024. All rights reserved.
* libkperf licensed under the Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
* http://license.coscl.org.cn/MulanPSL2
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
* PURPOSE.
* See the Mulan PSL v2 for more details.
* Author: Mr.Gan
* Create: 2024-04-03
* Description: definition of class PerfSampler for sampling and processing performance data in
* the KUNPENG_PMU namespace
******************************************************************************/
#ifndef PMU_SAMPLE_H
#define PMU_SAMPLE_H
#include <memory>
#include <stdexcept>
#include <vector>
#include <climits>
#include <unordered_map>
#include <linux/types.h>
#include <linux/perf_event.h>
#include "pmu_event.h"
#include "evt.h"
#include "symbol.h"
namespace KUNPENG_PMU {
static constexpr int SAMPLE_PAGE_SIZE = 4096;
static constexpr int DEFAULT_SAMPLE_PAGES = 128;
static constexpr int BRBE_SAMPLE_PAGES = 1024;
class PerfSampler : public PerfEvt {
public:
using PerfEvt::PerfEvt;
~PerfSampler()
{}
int Init(const bool groupEnable, const int groupFd, const int resetOutputFd) override;
int Read(EventData &eventData) override;
int MapPerfAttr(const bool groupEnable, const int groupFd) override;
int Close() override;
private:
int MmapNormal();
int MmapResetOutput(const int resetOutputFd);
int Mmap();
union PerfEvent *SampleReadEvent();
void RawSampleProcess(struct PmuData *sampleHead, PerfSampleIps *ips, union KUNPENG_PMU::PerfEvent *event, std::vector<PmuDataExt*> &extPool);
void ReadRingBuffer(EventData &eventData);
void FillComm(const size_t &start, const size_t &end, std::vector<PmuData> &data);
void UpdatePidInfo(const int &tid);
void UpdateCommInfo(KUNPENG_PMU::PerfEvent *event);
void ParseSwitch(KUNPENG_PMU::PerfEvent *event, struct PmuSwitchData *switchCurData);
void ParseBranchSampleData(struct PmuData *pmuData, PerfRawSample *sample, union PerfEvent *event, std::vector<PmuDataExt*> &extPool);
std::shared_ptr<PerfMmap> sampleMmap = nullptr;
};
}
#endif