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llkd.cpp
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llkd.cpp
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/*
* Copyright (C) 2018 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 "llkd.h"
#include <sched.h>
#include <sys/prctl.h>
#include <unistd.h>
#include <chrono>
#include <android-base/logging.h>
using namespace std::chrono;
int main(int, char**) {
prctl(PR_SET_DUMPABLE, 0);
LOG(INFO) << "started";
bool enabled = llkInit();
// Would like this policy to be automatic as part of libllkd,
// but that would be presumptuous and bad side-effect.
struct sched_param param;
memset(¶m, 0, sizeof(param));
sched_setscheduler(0, SCHED_BATCH, ¶m);
while (true) {
if (enabled) {
::usleep(duration_cast<microseconds>(llkCheck()).count());
} else {
::pause();
}
}
// NOTREACHED
LOG(INFO) << "exiting";
return 0;
}