You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.9 KiB
64 lines
1.9 KiB
/*
|
|
* 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.
|
|
*/
|
|
|
|
#define LOG_TAG "Watchdog"
|
|
|
|
#include <watchdog/Watchdog.h>
|
|
|
|
#include <android-base/logging.h>
|
|
#include <android-base/threads.h>
|
|
#include <signal.h>
|
|
#include <time.h>
|
|
#include <cstring>
|
|
#include <utils/Log.h>
|
|
|
|
namespace android {
|
|
|
|
Watchdog::Watchdog(::std::chrono::steady_clock::duration timeout) {
|
|
// Create the timer.
|
|
struct sigevent sev;
|
|
sev.sigev_notify = SIGEV_THREAD_ID;
|
|
sev.sigev_notify_thread_id = base::GetThreadId();
|
|
sev.sigev_signo = SIGABRT;
|
|
sev.sigev_value.sival_ptr = &mTimerId;
|
|
int err = timer_create(CLOCK_MONOTONIC, &sev, &mTimerId);
|
|
if (err != 0) {
|
|
PLOG(FATAL) << "Failed to create timer";
|
|
}
|
|
|
|
// Start the timer.
|
|
struct itimerspec spec;
|
|
memset(&spec, 0, sizeof(spec));
|
|
auto ns = std::chrono::duration_cast<std::chrono::nanoseconds>(timeout);
|
|
LOG_ALWAYS_FATAL_IF(timeout.count() <= 0, "Duration must be positive");
|
|
spec.it_value.tv_sec = ns.count() / 1000000000;
|
|
spec.it_value.tv_nsec = ns.count() % 1000000000;
|
|
err = timer_settime(mTimerId, 0, &spec, nullptr);
|
|
if (err != 0) {
|
|
PLOG(FATAL) << "Failed to start timer";
|
|
}
|
|
}
|
|
|
|
Watchdog::~Watchdog() {
|
|
// Delete the timer.
|
|
int err = timer_delete(mTimerId);
|
|
if (err != 0) {
|
|
PLOG(FATAL) << "Failed to delete timer";
|
|
}
|
|
}
|
|
|
|
} // namespace android
|