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/*
* Copyright (C) 2017 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_INPLACE_SAMPLER_CLIENT_H_
#define SIMPLE_PERF_INPLACE_SAMPLER_CLIENT_H_
#include <memory>
#include <set>
#include <vector>
#include "event_attr.h"
#include "record.h"
#include "UnixSocket.h"
class InplaceSamplerClient {
public:
static std::unique_ptr<InplaceSamplerClient> Create(const perf_event_attr& attr, pid_t pid,
const std::set<pid_t>& tids);
uint64_t Id() const;
bool IsClosed() {
return conn_->IsClosed();
}
bool StartPolling(IOEventLoop& loop, const std::function<bool(Record*)>& record_callback,
const std::function<bool()>& close_callback);
bool StopProfiling(IOEventLoop& loop, const std::function<bool()>& close_callback);
private:
InplaceSamplerClient(const perf_event_attr& attr, pid_t pid, const std::set<pid_t>& tids);
bool ConnectServer();
bool SendStartProfilingMessage();
bool HandleMessage(const UnixSocketMessage& msg);
const perf_event_attr attr_;
const pid_t pid_;
const std::set<pid_t> tids_;
uint32_t sample_freq_;
std::unique_ptr<UnixSocketConnection> conn_;
std::function<bool(Record*)> record_callback_;
bool got_start_profiling_reply_msg_;
};
#endif // SIMPLE_PERF_INPLACE_SAMPLER_CLIENT_H_
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