The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | |
| 18 | /* |
| 19 | * System clock functions. |
| 20 | */ |
| 21 | |
Mathias Agopian | 1f5762e | 2013-05-06 20:20:34 -0700 | [diff] [blame] | 22 | #include <sys/time.h> |
| 23 | #include <limits.h> |
| 24 | #include <fcntl.h> |
| 25 | #include <errno.h> |
| 26 | #include <string.h> |
| 27 | |
Steven Moreland | 2279b25 | 2017-07-19 09:50:45 -0700 | [diff] [blame] | 28 | #include <nativehelper/JNIHelp.h> |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 29 | #include "jni.h" |
Andreas Gampe | ed6b9df | 2014-11-20 22:02:20 -0800 | [diff] [blame] | 30 | #include "core_jni_helpers.h" |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 31 | |
Mathias Agopian | 1f5762e | 2013-05-06 20:20:34 -0700 | [diff] [blame] | 32 | #include <utils/SystemClock.h> |
Jerome Gaillard | e83f80d | 2019-07-01 11:04:51 +0100 | [diff] [blame] | 33 | #include <utils/Timers.h> |
Mathias Agopian | 1f5762e | 2013-05-06 20:20:34 -0700 | [diff] [blame] | 34 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 35 | namespace android { |
| 36 | |
John Reck | 9481c9e | 2016-10-03 14:55:00 -0700 | [diff] [blame] | 37 | static_assert(std::is_same<int64_t, jlong>::value, "jlong isn't an int64_t"); |
| 38 | static_assert(std::is_same<decltype(uptimeMillis()), int64_t>::value, |
| 39 | "uptimeMillis signature change, expected int64_t return value"); |
| 40 | static_assert(std::is_same<decltype(elapsedRealtime()), int64_t>::value, |
| 41 | "uptimeMillis signature change, expected int64_t return value"); |
| 42 | static_assert(std::is_same<decltype(elapsedRealtimeNano()), int64_t>::value, |
| 43 | "uptimeMillis signature change, expected int64_t return value"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 44 | |
| 45 | /* |
| 46 | * native public static long currentThreadTimeMillis(); |
| 47 | */ |
John Reck | 9481c9e | 2016-10-03 14:55:00 -0700 | [diff] [blame] | 48 | static jlong android_os_SystemClock_currentThreadTimeMillis() |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 49 | { |
Jerome Gaillard | e83f80d | 2019-07-01 11:04:51 +0100 | [diff] [blame] | 50 | return nanoseconds_to_milliseconds(systemTime(SYSTEM_TIME_THREAD)); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 51 | } |
| 52 | |
| 53 | /* |
Romain Guy | 648bee1 | 2011-07-20 18:47:17 -0700 | [diff] [blame] | 54 | * native public static long currentThreadTimeMicro(); |
| 55 | */ |
John Reck | 9481c9e | 2016-10-03 14:55:00 -0700 | [diff] [blame] | 56 | static jlong android_os_SystemClock_currentThreadTimeMicro() |
Romain Guy | 648bee1 | 2011-07-20 18:47:17 -0700 | [diff] [blame] | 57 | { |
Jerome Gaillard | e83f80d | 2019-07-01 11:04:51 +0100 | [diff] [blame] | 58 | return nanoseconds_to_microseconds(systemTime(SYSTEM_TIME_THREAD)); |
Romain Guy | 648bee1 | 2011-07-20 18:47:17 -0700 | [diff] [blame] | 59 | } |
| 60 | |
| 61 | /* |
| 62 | * native public static long currentTimeMicro(); |
| 63 | */ |
John Reck | 9481c9e | 2016-10-03 14:55:00 -0700 | [diff] [blame] | 64 | static jlong android_os_SystemClock_currentTimeMicro() |
Romain Guy | 648bee1 | 2011-07-20 18:47:17 -0700 | [diff] [blame] | 65 | { |
| 66 | struct timeval tv; |
| 67 | |
| 68 | gettimeofday(&tv, NULL); |
| 69 | return tv.tv_sec * 1000000LL + tv.tv_usec; |
| 70 | } |
| 71 | |
| 72 | /* |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 73 | * JNI registration. |
| 74 | */ |
Daniel Micay | 76f6a86 | 2015-09-19 17:31:01 -0400 | [diff] [blame] | 75 | static const JNINativeMethod gMethods[] = { |
John Reck | 9481c9e | 2016-10-03 14:55:00 -0700 | [diff] [blame] | 76 | // All of these are @CriticalNative, so we can defer directly to SystemClock.h for |
| 77 | // some of these |
| 78 | { "uptimeMillis", "()J", (void*) uptimeMillis }, |
| 79 | { "elapsedRealtime", "()J", (void*) elapsedRealtime }, |
| 80 | { "elapsedRealtimeNanos", "()J", (void*) elapsedRealtimeNano }, |
| 81 | |
| 82 | // SystemClock doesn't have an implementation for these that we can directly call |
| 83 | { "currentThreadTimeMillis", "()J", |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 84 | (void*) android_os_SystemClock_currentThreadTimeMillis }, |
John Reck | 9481c9e | 2016-10-03 14:55:00 -0700 | [diff] [blame] | 85 | { "currentThreadTimeMicro", "()J", |
Romain Guy | 648bee1 | 2011-07-20 18:47:17 -0700 | [diff] [blame] | 86 | (void*) android_os_SystemClock_currentThreadTimeMicro }, |
John Reck | 9481c9e | 2016-10-03 14:55:00 -0700 | [diff] [blame] | 87 | { "currentTimeMicro", "()J", |
Romain Guy | 648bee1 | 2011-07-20 18:47:17 -0700 | [diff] [blame] | 88 | (void*) android_os_SystemClock_currentTimeMicro }, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 89 | }; |
| 90 | int register_android_os_SystemClock(JNIEnv* env) |
| 91 | { |
Andreas Gampe | ed6b9df | 2014-11-20 22:02:20 -0800 | [diff] [blame] | 92 | return RegisterMethodsOrDie(env, "android/os/SystemClock", gMethods, NELEM(gMethods)); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 93 | } |
| 94 | |
| 95 | }; // namespace android |
| 96 | |