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/*
* Copyright (C) 2020 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.
*/
#include <wakelock/wakelock.h>
#include <include/simpleperf_profcollect.hpp>
#include "ETMRecorder.h"
#include "command.h"
#include "event_attr.h"
#include "event_fd.h"
#include "event_type.h"
using namespace simpleperf;
bool HasDriverSupport() {
return ETMRecorder::GetInstance().IsETMDriverAvailable();
}
bool HasDeviceSupport() {
auto result = ETMRecorder::GetInstance().CheckEtmSupport();
if (!result.ok()) {
LOG(DEBUG) << result.error();
return false;
}
const EventType* type = FindEventTypeByName("cs-etm", false);
if (type == nullptr) {
return false;
}
return IsEventAttrSupported(CreateDefaultPerfEventAttr(*type), type->name);
}
bool Record(const char* event_name, const char* output, float duration) {
// The kernel may panic when trying to hibernate or hotplug CPUs while collecting
// ETM data. So get wakelock to keep the CPUs on.
auto wakelock = android::wakelock::WakeLock::tryGet("profcollectd");
if (!wakelock) {
LOG(ERROR) << "Failed to request wakelock.";
return false;
}
auto recordCmd = CreateCommandInstance("record");
std::vector<std::string> args;
args.push_back("-a");
args.insert(args.end(), {"-e", event_name});
args.insert(args.end(), {"--duration", std::to_string(duration)});
args.insert(args.end(), {"-o", output});
return recordCmd->Run(args);
}
bool Inject(const char* traceInput, const char* profileOutput, const char* binary_filter) {
auto injectCmd = CreateCommandInstance("inject");
std::vector<std::string> args;
args.insert(args.end(), {"-i", traceInput});
args.insert(args.end(), {"-o", profileOutput});
if (binary_filter) {
args.insert(args.end(), {"--binary", binary_filter});
}
args.insert(args.end(), {"--output", "branch-list"});
args.emplace_back("--exclude-perf");
return injectCmd->Run(args);
}
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