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