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/*
* Copyright (C) 2007-2014 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.
*/
#include <android-base/macros.h>
#include <log/log_id.h>
#include <nativehelper/JNIHelp.h>
#include "jni.h"
#include "core_jni_helpers.h"
#include "eventlog_helper.h"
namespace android {
constexpr char kEventLogEventClass[] = "android/util/EventLog$Event";
template class EventLogHelper<log_id_t::LOG_ID_EVENTS, kEventLogEventClass>;
using ELog = EventLogHelper<log_id_t::LOG_ID_EVENTS, kEventLogEventClass>;
/*
* In class android.util.EventLog:
* static native void readEvents(int[] tags, Collection<Event> output)
*
* Reads events from the event log
*/
static void android_util_EventLog_readEvents(JNIEnv* env, jobject clazz ATTRIBUTE_UNUSED,
jintArray tags,
jobject out) {
if (tags == NULL || out == NULL) {
jniThrowNullPointerException(env, NULL);
return;
}
ELog::readEvents(env, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, tags, 0, out);
}
/*
* In class android.util.EventLog:
* static native void readEventsOnWrapping(int[] tags, long timestamp, Collection<Event> output)
*
* Reads events from the event log, blocking until events after timestamp are to be overwritten.
*/
static void android_util_EventLog_readEventsOnWrapping(JNIEnv* env, jobject clazz ATTRIBUTE_UNUSED,
jintArray tags,
jlong timestamp,
jobject out) {
if (tags == NULL || out == NULL) {
jniThrowNullPointerException(env, NULL);
return;
}
ELog::readEvents(env, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK | ANDROID_LOG_WRAP, tags,
timestamp, out);
}
/*
* JNI registration.
*/
static const JNINativeMethod gRegisterMethods[] = {
/* name, signature, funcPtr */
{ "writeEvent", "(II)I", (void*) ELog::writeEventInteger },
{ "writeEvent", "(IJ)I", (void*) ELog::writeEventLong },
{ "writeEvent", "(IF)I", (void*) ELog::writeEventFloat },
{ "writeEvent", "(ILjava/lang/String;)I", (void*) ELog::writeEventString },
{ "writeEvent", "(I[Ljava/lang/Object;)I", (void*) ELog::writeEventArray },
{ "readEvents",
"([ILjava/util/Collection;)V",
(void*) android_util_EventLog_readEvents
},
{ "readEventsOnWrapping",
"([IJLjava/util/Collection;)V",
(void*) android_util_EventLog_readEventsOnWrapping
},
};
int register_android_util_EventLog(JNIEnv* env) {
ELog::Init(env);
return RegisterMethodsOrDie(
env,
"android/util/EventLog",
gRegisterMethods, NELEM(gRegisterMethods));
}
}; // namespace android
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