/*
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* Copyright (C) 2007-2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <android-base/macros.h>
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#include <log/log_id.h>
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#include <nativehelper/JNIHelp.h>
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#include "jni.h"
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#include "core_jni_helpers.h"
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#include "eventlog_helper.h"
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namespace android {
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constexpr char kEventLogEventClass[] = "android/util/EventLog$Event";
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template class EventLogHelper<log_id_t::LOG_ID_EVENTS, kEventLogEventClass>;
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using ELog = EventLogHelper<log_id_t::LOG_ID_EVENTS, kEventLogEventClass>;
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/*
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* In class android.util.EventLog:
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* static native void readEvents(int[] tags, Collection<Event> output)
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*
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* Reads events from the event log
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*/
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static void android_util_EventLog_readEvents(JNIEnv* env, jobject clazz ATTRIBUTE_UNUSED,
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jintArray tags,
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jobject out) {
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if (tags == NULL || out == NULL) {
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jniThrowNullPointerException(env, NULL);
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return;
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}
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ELog::readEvents(env, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, tags, 0, out);
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}
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/*
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* In class android.util.EventLog:
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* static native void readEventsOnWrapping(int[] tags, long timestamp, Collection<Event> output)
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*
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* Reads events from the event log, blocking until events after timestamp are to be overwritten.
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*/
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static void android_util_EventLog_readEventsOnWrapping(JNIEnv* env, jobject clazz ATTRIBUTE_UNUSED,
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jintArray tags,
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jlong timestamp,
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jobject out) {
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if (tags == NULL || out == NULL) {
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jniThrowNullPointerException(env, NULL);
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return;
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}
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ELog::readEvents(env, ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK | ANDROID_LOG_WRAP, tags,
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timestamp, out);
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}
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/*
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* JNI registration.
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*/
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static const JNINativeMethod gRegisterMethods[] = {
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/* name, signature, funcPtr */
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{ "writeEvent", "(II)I", (void*) ELog::writeEventInteger },
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{ "writeEvent", "(IJ)I", (void*) ELog::writeEventLong },
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{ "writeEvent", "(IF)I", (void*) ELog::writeEventFloat },
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{ "writeEvent", "(ILjava/lang/String;)I", (void*) ELog::writeEventString },
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{ "writeEvent", "(I[Ljava/lang/Object;)I", (void*) ELog::writeEventArray },
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{ "readEvents",
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"([ILjava/util/Collection;)V",
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(void*) android_util_EventLog_readEvents
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},
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{ "readEventsOnWrapping",
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"([IJLjava/util/Collection;)V",
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(void*) android_util_EventLog_readEventsOnWrapping
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},
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};
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int register_android_util_EventLog(JNIEnv* env) {
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ELog::Init(env);
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return RegisterMethodsOrDie(
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env,
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"android/util/EventLog",
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gRegisterMethods, NELEM(gRegisterMethods));
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}
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}; // namespace android
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