blob: bb012b9429f41827b8bfd6b237f030185f4d355b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
/*
* 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
|
