140 lines
6 KiB
C++
140 lines
6 KiB
C++
/*
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* Copyright (C) 2010 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_TAG "JniConstants"
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#include "ALog-priv.h"
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#include "JniConstants.h"
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#include "ScopedLocalRef.h"
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#include <stdlib.h>
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#include <atomic>
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#include <mutex>
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static std::atomic<bool> g_constants_initialized(false);
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static std::mutex g_constants_mutex;
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jclass JniConstants::booleanClass;
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jclass JniConstants::byteArrayClass;
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jclass JniConstants::calendarClass;
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jclass JniConstants::charsetICUClass;
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jclass JniConstants::doubleClass;
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jclass JniConstants::errnoExceptionClass;
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jclass JniConstants::fileDescriptorClass;
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jclass JniConstants::gaiExceptionClass;
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jclass JniConstants::inet6AddressClass;
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jclass JniConstants::inet6AddressHolderClass;
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jclass JniConstants::inetAddressClass;
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jclass JniConstants::inetAddressHolderClass;
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jclass JniConstants::inetSocketAddressClass;
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jclass JniConstants::inetSocketAddressHolderClass;
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jclass JniConstants::integerClass;
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jclass JniConstants::localeDataClass;
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jclass JniConstants::longClass;
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jclass JniConstants::mutableIntClass;
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jclass JniConstants::mutableLongClass;
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jclass JniConstants::netlinkSocketAddressClass;
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jclass JniConstants::packetSocketAddressClass;
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jclass JniConstants::patternSyntaxExceptionClass;
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jclass JniConstants::referenceClass;
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jclass JniConstants::socketTaggerClass;
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jclass JniConstants::stringClass;
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jclass JniConstants::structAddrinfoClass;
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jclass JniConstants::structFlockClass;
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jclass JniConstants::structGroupReqClass;
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jclass JniConstants::structGroupSourceReqClass;
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jclass JniConstants::structIfaddrs;
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jclass JniConstants::structLingerClass;
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jclass JniConstants::structPasswdClass;
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jclass JniConstants::structPollfdClass;
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jclass JniConstants::structStatClass;
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jclass JniConstants::structStatVfsClass;
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jclass JniConstants::structTimevalClass;
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jclass JniConstants::structTimespecClass;
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jclass JniConstants::structUcredClass;
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jclass JniConstants::structUtsnameClass;
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jclass JniConstants::unixSocketAddressClass;
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jclass JniConstants::zipEntryClass;
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static jclass findClass(JNIEnv* env, const char* name) {
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ScopedLocalRef<jclass> localClass(env, env->FindClass(name));
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jclass result = reinterpret_cast<jclass>(env->NewGlobalRef(localClass.get()));
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if (result == NULL) {
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ALOGE("failed to find class '%s'", name);
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abort();
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}
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return result;
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}
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void JniConstants::init(JNIEnv* env) {
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// Fast check
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if (g_constants_initialized) {
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// already initialized
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return;
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}
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// Slightly slower check
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std::lock_guard<std::mutex> guard(g_constants_mutex);
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if (g_constants_initialized) {
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// already initialized
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return;
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}
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booleanClass = findClass(env, "java/lang/Boolean");
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byteArrayClass = findClass(env, "[B");
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calendarClass = findClass(env, "java/util/Calendar");
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charsetICUClass = findClass(env, "java/nio/charset/CharsetICU");
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doubleClass = findClass(env, "java/lang/Double");
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errnoExceptionClass = findClass(env, "android/system/ErrnoException");
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fileDescriptorClass = findClass(env, "java/io/FileDescriptor");
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gaiExceptionClass = findClass(env, "android/system/GaiException");
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inet6AddressClass = findClass(env, "java/net/Inet6Address");
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inet6AddressHolderClass = findClass(env, "java/net/Inet6Address$Inet6AddressHolder");
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inetAddressClass = findClass(env, "java/net/InetAddress");
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inetAddressHolderClass = findClass(env, "java/net/InetAddress$InetAddressHolder");
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inetSocketAddressClass = findClass(env, "java/net/InetSocketAddress");
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inetSocketAddressHolderClass = findClass(env, "java/net/InetSocketAddress$InetSocketAddressHolder");
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integerClass = findClass(env, "java/lang/Integer");
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localeDataClass = findClass(env, "libcore/icu/LocaleData");
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longClass = findClass(env, "java/lang/Long");
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mutableIntClass = findClass(env, "android/util/MutableInt");
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mutableLongClass = findClass(env, "android/util/MutableLong");
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netlinkSocketAddressClass = findClass(env, "android/system/NetlinkSocketAddress");
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packetSocketAddressClass = findClass(env, "android/system/PacketSocketAddress");
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patternSyntaxExceptionClass = findClass(env, "java/util/regex/PatternSyntaxException");
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referenceClass = findClass(env, "java/lang/ref/Reference");
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socketTaggerClass = findClass(env, "dalvik/system/SocketTagger");
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stringClass = findClass(env, "java/lang/String");
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structAddrinfoClass = findClass(env, "android/system/StructAddrinfo");
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structFlockClass = findClass(env, "android/system/StructFlock");
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structGroupReqClass = findClass(env, "android/system/StructGroupReq");
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structGroupSourceReqClass = findClass(env, "android/system/StructGroupSourceReq");
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structIfaddrs = findClass(env, "android/system/StructIfaddrs");
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structLingerClass = findClass(env, "android/system/StructLinger");
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structPasswdClass = findClass(env, "android/system/StructPasswd");
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structPollfdClass = findClass(env, "android/system/StructPollfd");
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structStatClass = findClass(env, "android/system/StructStat");
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structStatVfsClass = findClass(env, "android/system/StructStatVfs");
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structTimevalClass = findClass(env, "android/system/StructTimeval");
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structTimespecClass = findClass(env, "android/system/StructTimespec");
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structUcredClass = findClass(env, "android/system/StructUcred");
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structUtsnameClass = findClass(env, "android/system/StructUtsname");
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unixSocketAddressClass = findClass(env, "android/system/UnixSocketAddress");
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zipEntryClass = findClass(env, "java/util/zip/ZipEntry");
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g_constants_initialized = true;
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}
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