e94c92cd48
We've removed the Android alarm driver from our supported kernels. clock_gettime(CLOCK_BOOTTIME) has been a viable option since 2.6.39, so there's no need for the legacy code path anymore. We can use this on Linux hosts too, since no one should be building Android on hosts with kernels that old. Bug: 28357356 Change-Id: I0aa164383c95e77c53d2c85883d83f85d4abc7b1 Signed-off-by: Greg Hackmann <ghackmann@google.com>
74 lines
1.7 KiB
C++
74 lines
1.7 KiB
C++
/*
|
|
* Copyright (C) 2008 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.
|
|
*/
|
|
|
|
|
|
/*
|
|
* System clock functions.
|
|
*/
|
|
|
|
#include <sys/time.h>
|
|
#include <limits.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
#include <cutils/compiler.h>
|
|
#include <utils/SystemClock.h>
|
|
#include <utils/Timers.h>
|
|
|
|
#define LOG_TAG "SystemClock"
|
|
#include <utils/Log.h>
|
|
|
|
namespace android {
|
|
|
|
/*
|
|
* native public static long uptimeMillis();
|
|
*/
|
|
int64_t uptimeMillis()
|
|
{
|
|
int64_t when = systemTime(SYSTEM_TIME_MONOTONIC);
|
|
return (int64_t) nanoseconds_to_milliseconds(when);
|
|
}
|
|
|
|
/*
|
|
* native public static long elapsedRealtime();
|
|
*/
|
|
int64_t elapsedRealtime()
|
|
{
|
|
return nanoseconds_to_milliseconds(elapsedRealtimeNano());
|
|
}
|
|
|
|
/*
|
|
* native public static long elapsedRealtimeNano();
|
|
*/
|
|
int64_t elapsedRealtimeNano()
|
|
{
|
|
#if defined(__linux__)
|
|
struct timespec ts;
|
|
int err = clock_gettime(CLOCK_BOOTTIME, &ts);
|
|
if (CC_UNLIKELY(err)) {
|
|
// This should never happen, but just in case ...
|
|
ALOGE("clock_gettime(CLOCK_BOOTTIME) failed: %s", strerror(errno));
|
|
return 0;
|
|
}
|
|
|
|
return seconds_to_nanoseconds(ts.tv_sec) + ts.tv_nsec;
|
|
#else
|
|
return systemTime(SYSTEM_TIME_MONOTONIC);
|
|
#endif
|
|
}
|
|
|
|
}; // namespace android
|