| /* |
| * 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 <fcntl.h> |
| #include <log/log_event_list.h> |
| |
| #include <log/log.h> |
| |
| #include <nativehelper/JNIHelp.h> |
| #include "core_jni_helpers.h" |
| #include "jni.h" |
| |
| #define UNUSED __attribute__((__unused__)) |
| |
| namespace android { |
| |
| static jclass gCollectionClass; |
| static jmethodID gCollectionAddID; |
| |
| static jclass gIntegerClass; |
| static jfieldID gIntegerValueID; |
| |
| static jclass gLongClass; |
| static jfieldID gLongValueID; |
| |
| static jclass gFloatClass; |
| static jfieldID gFloatValueID; |
| |
| static jclass gStringClass; |
| |
| /* |
| * In class android.util.StatsLog: |
| * static native int writeInt(int tag, int value) |
| */ |
| static jint android_util_StatsLog_write_Integer(JNIEnv* env UNUSED, |
| jobject clazz UNUSED, |
| jint tag, jint value) |
| { |
| android_log_event_list ctx(tag); |
| ctx << (int32_t)value; |
| return ctx.write(LOG_ID_STATS); |
| } |
| |
| /* |
| * In class android.util.StatsLog: |
| * static native int writeLong(long tag, long value) |
| */ |
| static jint android_util_StatsLog_write_Long(JNIEnv* env UNUSED, |
| jobject clazz UNUSED, |
| jint tag, jlong value) |
| { |
| android_log_event_list ctx(tag); |
| ctx << (int64_t)value; |
| return ctx.write(LOG_ID_STATS); |
| } |
| |
| /* |
| * In class android.util.StatsLog: |
| * static native int writeFloat(long tag, float value) |
| */ |
| static jint android_util_StatsLog_write_Float(JNIEnv* env UNUSED, |
| jobject clazz UNUSED, |
| jint tag, jfloat value) |
| { |
| android_log_event_list ctx(tag); |
| ctx << (float)value; |
| return ctx.write(LOG_ID_STATS); |
| } |
| |
| /* |
| * In class android.util.StatsLog: |
| * static native int writeString(int tag, String value) |
| */ |
| static jint android_util_StatsLog_write_String(JNIEnv* env, |
| jobject clazz UNUSED, |
| jint tag, jstring value) { |
| android_log_event_list ctx(tag); |
| // Don't throw NPE -- I feel like it's sort of mean for a logging function |
| // to be all crashy if you pass in NULL -- but make the NULL value explicit. |
| if (value != NULL) { |
| const char *str = env->GetStringUTFChars(value, NULL); |
| ctx << str; |
| env->ReleaseStringUTFChars(value, str); |
| } else { |
| ctx << "NULL"; |
| } |
| return ctx.write(LOG_ID_STATS); |
| } |
| |
| /* |
| * In class android.util.StatsLog: |
| * static native int writeArray(long tag, Object... value) |
| */ |
| static jint android_util_StatsLog_write_Array(JNIEnv* env, jobject clazz, |
| jint tag, jobjectArray value) { |
| android_log_event_list ctx(tag); |
| |
| if (value == NULL) { |
| ctx << "[NULL]"; |
| return ctx.write(LOG_ID_STATS); |
| } |
| |
| jsize copied = 0, num = env->GetArrayLength(value); |
| for (; copied < num && copied < 255; ++copied) { |
| if (ctx.status()) break; |
| jobject item = env->GetObjectArrayElement(value, copied); |
| if (item == NULL) { |
| ctx << "NULL"; |
| } else if (env->IsInstanceOf(item, gStringClass)) { |
| const char *str = env->GetStringUTFChars((jstring) item, NULL); |
| ctx << str; |
| env->ReleaseStringUTFChars((jstring) item, str); |
| } else if (env->IsInstanceOf(item, gIntegerClass)) { |
| ctx << (int32_t)env->GetIntField(item, gIntegerValueID); |
| } else if (env->IsInstanceOf(item, gLongClass)) { |
| ctx << (int64_t)env->GetLongField(item, gLongValueID); |
| } else if (env->IsInstanceOf(item, gFloatClass)) { |
| ctx << (float)env->GetFloatField(item, gFloatValueID); |
| } else { |
| jniThrowException(env, |
| "java/lang/IllegalArgumentException", |
| "Invalid payload item type"); |
| return -1; |
| } |
| env->DeleteLocalRef(item); |
| } |
| return ctx.write(LOG_ID_STATS); |
| } |
| |
| /* |
| * JNI registration. |
| */ |
| static const JNINativeMethod gRegisterMethods[] = { |
| /* name, signature, funcPtr */ |
| { "writeInt", "(II)I", (void*) android_util_StatsLog_write_Integer }, |
| { "writeLong", "(IJ)I", (void*) android_util_StatsLog_write_Long }, |
| { "writeFloat", "(IF)I", (void*) android_util_StatsLog_write_Float }, |
| { "writeString", |
| "(ILjava/lang/String;)I", |
| (void*) android_util_StatsLog_write_String |
| }, |
| { "writeArray", |
| "(I[Ljava/lang/Object;)I", |
| (void*) android_util_StatsLog_write_Array |
| }, |
| }; |
| |
| static struct { const char *name; jclass *clazz; } gClasses[] = { |
| { "java/lang/Integer", &gIntegerClass }, |
| { "java/lang/Long", &gLongClass }, |
| { "java/lang/Float", &gFloatClass }, |
| { "java/lang/String", &gStringClass }, |
| { "java/util/Collection", &gCollectionClass }, |
| }; |
| |
| static struct { jclass *c; const char *name, *ft; jfieldID *id; } gFields[] = { |
| { &gIntegerClass, "value", "I", &gIntegerValueID }, |
| { &gLongClass, "value", "J", &gLongValueID }, |
| { &gFloatClass, "value", "F", &gFloatValueID }, |
| }; |
| |
| static struct { jclass *c; const char *name, *mt; jmethodID *id; } gMethods[] = { |
| { &gCollectionClass, "add", "(Ljava/lang/Object;)Z", &gCollectionAddID }, |
| }; |
| |
| int register_android_util_StatsLog(JNIEnv* env) { |
| for (int i = 0; i < NELEM(gClasses); ++i) { |
| jclass clazz = FindClassOrDie(env, gClasses[i].name); |
| *gClasses[i].clazz = MakeGlobalRefOrDie(env, clazz); |
| } |
| |
| for (int i = 0; i < NELEM(gFields); ++i) { |
| *gFields[i].id = GetFieldIDOrDie(env, |
| *gFields[i].c, gFields[i].name, gFields[i].ft); |
| } |
| |
| for (int i = 0; i < NELEM(gMethods); ++i) { |
| *gMethods[i].id = GetMethodIDOrDie(env, |
| *gMethods[i].c, gMethods[i].name, gMethods[i].mt); |
| } |
| |
| return RegisterMethodsOrDie( |
| env, |
| "android/util/StatsLog", |
| gRegisterMethods, NELEM(gRegisterMethods)); |
| } |
| |
| }; // namespace android |