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author | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
commit | 54b6cfa9a9e5b861a9930af873580d6dc20f773c (patch) | |
tree | 35051494d2af230dce54d6b31c6af8fc24091316 /core/jni/android_os_SystemClock.cpp | |
download | frameworks_base-54b6cfa9a9e5b861a9930af873580d6dc20f773c.zip frameworks_base-54b6cfa9a9e5b861a9930af873580d6dc20f773c.tar.gz frameworks_base-54b6cfa9a9e5b861a9930af873580d6dc20f773c.tar.bz2 |
Initial Contribution
Diffstat (limited to 'core/jni/android_os_SystemClock.cpp')
-rw-r--r-- | core/jni/android_os_SystemClock.cpp | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/core/jni/android_os_SystemClock.cpp b/core/jni/android_os_SystemClock.cpp new file mode 100644 index 0000000..ffd0c1e --- /dev/null +++ b/core/jni/android_os_SystemClock.cpp @@ -0,0 +1,103 @@ +/* + * 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 "JNIHelp.h" +#include "jni.h" +#include "android_runtime/AndroidRuntime.h" + +#include "utils/SystemClock.h" + +#include <sys/time.h> +#include <time.h> + +namespace android { + +/* + * native public static void setCurrentTimeMillis(long millis) + * + * Set the current time. This only works when running as root. + */ +static jboolean android_os_SystemClock_setCurrentTimeMillis(JNIEnv* env, + jobject clazz, jlong millis) +{ + return (setCurrentTimeMillis(millis) == 0); +} + +/* + * native public static long uptimeMillis(); + */ +static jlong android_os_SystemClock_uptimeMillis(JNIEnv* env, + jobject clazz) +{ + return (jlong)uptimeMillis(); +} + +/* + * native public static long elapsedRealtime(); + */ +static jlong android_os_SystemClock_elapsedRealtime(JNIEnv* env, + jobject clazz) +{ + return (jlong)elapsedRealtime(); +} + +/* + * native public static long currentThreadTimeMillis(); + */ +static jlong android_os_SystemClock_currentThreadTimeMillis(JNIEnv* env, + jobject clazz) +{ +#if defined(HAVE_POSIX_CLOCKS) + struct timespec tm; + + clock_gettime(CLOCK_THREAD_CPUTIME_ID, &tm); + + return tm.tv_sec * 1000LL + tm.tv_nsec / 1000000; +#else + struct timeval tv; + + gettimeofday(&tv, NULL); + return tv.tv_sec * 1000LL + tv.tv_usec / 1000; +#endif +} + +/* + * JNI registration. + */ +static JNINativeMethod gMethods[] = { + /* name, signature, funcPtr */ + { "setCurrentTimeMillis", "(J)Z", + (void*) android_os_SystemClock_setCurrentTimeMillis }, + { "uptimeMillis", "()J", + (void*) android_os_SystemClock_uptimeMillis }, + { "elapsedRealtime", "()J", + (void*) android_os_SystemClock_elapsedRealtime }, + { "currentThreadTimeMillis", "()J", + (void*) android_os_SystemClock_currentThreadTimeMillis }, +}; +int register_android_os_SystemClock(JNIEnv* env) +{ + return AndroidRuntime::registerNativeMethods(env, + "android/os/SystemClock", gMethods, NELEM(gMethods)); +} + +}; // namespace android + |