* Copyright (c) Huawei Technologies Co., Ltd. 2025. 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: Wu
* Create: 2025-08-10
* Description: declaration of class PerfCounterBpf that inherits from PerfCounter.
******************************************************************************/
#ifndef PMU_COUNTER_BPF_H
#define PMU_COUNTER_BPF_H
#include <memory>
#include <stdexcept>
#include <linux/types.h>
#include <unordered_set>
#include "evt.h"
#include "pmu_event.h"
#include "perf_counter.h"
#define AT_FDCWD -100
struct BpfEvent {
int bpfFd = -1;
int eventId = -1;
std::unordered_set<int> cpus;
std::unordered_set<int> pids;
};
namespace KUNPENG_PMU {
class PerfCounterBpf : public PerfCounter {
public:
using PerfCounter::PerfCounter;
~PerfCounterBpf()
{}
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 Enable() override;
int Disable() override;
int Reset() override;
int Close() override;
int BeginRead();
int EndRead();
int InitPidForEvent(const std::vector<int>& pids);
int ReadBpfProcess(const std::vector<int>& pids, std::vector<PmuData> &data);
int ReadBpfCgroup(std::vector<PmuData> &data);
private:
int InitBpfObj();
int InitBpfCgroupObj();
std::unordered_map<std::string, int> cgroupIdxMap;
};
}
#endif
