/* //device/libs/android_runtime/android_util_Log.cpp
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**
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** Copyright 2006, 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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#define LOG_NAMESPACE "log.tag."
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#define LOG_TAG "Log_println"
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#include <android-base/macros.h>
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#include <assert.h>
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#include <cutils/properties.h>
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#include <log/log.h> // For LOGGER_ENTRY_MAX_PAYLOAD.
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#include <utils/Log.h>
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#include <utils/String8.h>
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#include "jni.h"
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#include <nativehelper/JNIHelp.h>
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#include "utils/misc.h"
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#include "core_jni_helpers.h"
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#include "android_util_Log.h"
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namespace android {
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struct levels_t {
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jint verbose;
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jint debug;
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jint info;
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jint warn;
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jint error;
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jint assert;
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};
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static levels_t levels;
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static jboolean isLoggable(const char* tag, jint level) {
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return __android_log_is_loggable(level, tag, ANDROID_LOG_INFO);
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}
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static jboolean android_util_Log_isLoggable(JNIEnv* env, jobject clazz, jstring tag, jint level)
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{
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if (tag == NULL) {
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return false;
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}
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const char* chars = env->GetStringUTFChars(tag, NULL);
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if (!chars) {
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return false;
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}
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jboolean result = isLoggable(chars, level);
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env->ReleaseStringUTFChars(tag, chars);
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return result;
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}
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bool android_util_Log_isVerboseLogEnabled(const char* tag) {
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return isLoggable(tag, levels.verbose);
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}
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/*
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* In class android.util.Log:
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* public static native int println_native(int buffer, int priority, String tag, String msg)
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*/
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static jint android_util_Log_println_native(JNIEnv* env, jobject clazz,
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jint bufID, jint priority, jstring tagObj, jstring msgObj)
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{
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const char* tag = NULL;
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const char* msg = NULL;
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if (msgObj == NULL) {
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jniThrowNullPointerException(env, "println needs a message");
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return -1;
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}
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if (bufID < 0 || bufID >= LOG_ID_MAX) {
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jniThrowNullPointerException(env, "bad bufID");
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return -1;
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}
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if (tagObj != NULL)
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tag = env->GetStringUTFChars(tagObj, NULL);
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msg = env->GetStringUTFChars(msgObj, NULL);
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int res = __android_log_buf_write(bufID, (android_LogPriority)priority, tag, msg);
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if (tag != NULL)
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env->ReleaseStringUTFChars(tagObj, tag);
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env->ReleaseStringUTFChars(msgObj, msg);
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return res;
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}
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/*
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* In class android.util.Log:
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* private static native int logger_entry_max_payload_native()
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*/
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static jint android_util_Log_logger_entry_max_payload_native(JNIEnv* env ATTRIBUTE_UNUSED,
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jobject clazz ATTRIBUTE_UNUSED)
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{
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return static_cast<jint>(LOGGER_ENTRY_MAX_PAYLOAD);
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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 gMethods[] = {
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/* name, signature, funcPtr */
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{ "isLoggable", "(Ljava/lang/String;I)Z", (void*) android_util_Log_isLoggable },
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{ "println_native", "(IILjava/lang/String;Ljava/lang/String;)I", (void*) android_util_Log_println_native },
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{ "logger_entry_max_payload_native", "()I", (void*) android_util_Log_logger_entry_max_payload_native },
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};
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int register_android_util_Log(JNIEnv* env)
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{
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jclass clazz = FindClassOrDie(env, "android/util/Log");
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levels.verbose = env->GetStaticIntField(clazz, GetStaticFieldIDOrDie(env, clazz, "VERBOSE", "I"));
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levels.debug = env->GetStaticIntField(clazz, GetStaticFieldIDOrDie(env, clazz, "DEBUG", "I"));
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levels.info = env->GetStaticIntField(clazz, GetStaticFieldIDOrDie(env, clazz, "INFO", "I"));
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levels.warn = env->GetStaticIntField(clazz, GetStaticFieldIDOrDie(env, clazz, "WARN", "I"));
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levels.error = env->GetStaticIntField(clazz, GetStaticFieldIDOrDie(env, clazz, "ERROR", "I"));
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levels.assert = env->GetStaticIntField(clazz, GetStaticFieldIDOrDie(env, clazz, "ASSERT", "I"));
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return RegisterMethodsOrDie(env, "android/util/Log", gMethods, NELEM(gMethods));
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}
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}; // namespace android
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