Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Ruben Brunk | a77f3a2 | 2013-09-09 02:21:31 -0700 | [diff] [blame] | 17 | #define LOG_TAG "JniConstants" |
| 18 | |
| 19 | #include "ALog-priv.h" |
Logan Chien | 63e4917 | 2016-06-08 11:33:36 +0800 | [diff] [blame] | 20 | #include "JNIHelp-priv.h" |
Steven Moreland | 3544a93 | 2017-07-19 10:26:05 -0700 | [diff] [blame] | 21 | #include <nativehelper/JniConstants.h> |
Logan Chien | 63e4917 | 2016-06-08 11:33:36 +0800 | [diff] [blame] | 22 | #include <nativehelper/JniConstants-priv.h> |
Steven Moreland | 3544a93 | 2017-07-19 10:26:05 -0700 | [diff] [blame] | 23 | #include <nativehelper/ScopedLocalRef.h> |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 24 | |
| 25 | #include <stdlib.h> |
| 26 | |
Dimitry Ivanov | 13803f6 | 2016-03-21 13:37:12 -0700 | [diff] [blame] | 27 | #include <atomic> |
| 28 | #include <mutex> |
| 29 | |
| 30 | static std::atomic<bool> g_constants_initialized(false); |
| 31 | static std::mutex g_constants_mutex; |
| 32 | |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 33 | jclass JniConstants::booleanClass; |
| 34 | jclass JniConstants::byteArrayClass; |
Kenny Root | f4a3c1e | 2013-03-07 11:20:28 -0800 | [diff] [blame] | 35 | jclass JniConstants::calendarClass; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 36 | jclass JniConstants::charsetICUClass; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 37 | jclass JniConstants::doubleClass; |
| 38 | jclass JniConstants::errnoExceptionClass; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 39 | jclass JniConstants::fileDescriptorClass; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 40 | jclass JniConstants::gaiExceptionClass; |
| 41 | jclass JniConstants::inet6AddressClass; |
Yi Kong | c9be467 | 2016-07-11 00:07:32 +0100 | [diff] [blame] | 42 | jclass JniConstants::inet6AddressHolderClass; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 43 | jclass JniConstants::inetAddressClass; |
Piotr Jastrzebski | 6ea79a1 | 2015-05-06 14:00:36 +0100 | [diff] [blame] | 44 | jclass JniConstants::inetAddressHolderClass; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 45 | jclass JniConstants::inetSocketAddressClass; |
Piotr Jastrzebski | 75fc6d2 | 2015-06-02 10:58:22 +0100 | [diff] [blame] | 46 | jclass JniConstants::inetSocketAddressHolderClass; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 47 | jclass JniConstants::integerClass; |
| 48 | jclass JniConstants::localeDataClass; |
| 49 | jclass JniConstants::longClass; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 50 | jclass JniConstants::mutableIntClass; |
| 51 | jclass JniConstants::mutableLongClass; |
Erik Kline | 25b67b1 | 2015-02-25 18:33:29 +0900 | [diff] [blame] | 52 | jclass JniConstants::netlinkSocketAddressClass; |
Lorenzo Colitti | 63daad5 | 2015-03-12 01:22:36 +0900 | [diff] [blame] | 53 | jclass JniConstants::packetSocketAddressClass; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 54 | jclass JniConstants::patternSyntaxExceptionClass; |
Jeff Brown | dc176c5 | 2013-04-02 18:09:29 -0700 | [diff] [blame] | 55 | jclass JniConstants::referenceClass; |
Yi Kong | 65eaf99 | 2016-04-01 14:53:42 +0100 | [diff] [blame] | 56 | jclass JniConstants::socketTaggerClass; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 57 | jclass JniConstants::stringClass; |
| 58 | jclass JniConstants::structAddrinfoClass; |
| 59 | jclass JniConstants::structFlockClass; |
| 60 | jclass JniConstants::structGroupReqClass; |
Yi Kong | e26fd49 | 2016-06-08 15:23:53 +0200 | [diff] [blame] | 61 | jclass JniConstants::structIfaddrs; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 62 | jclass JniConstants::structLingerClass; |
| 63 | jclass JniConstants::structPasswdClass; |
| 64 | jclass JniConstants::structPollfdClass; |
| 65 | jclass JniConstants::structStatClass; |
Elliott Hughes | 47a1f29 | 2013-07-09 13:59:11 -0700 | [diff] [blame] | 66 | jclass JniConstants::structStatVfsClass; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 67 | jclass JniConstants::structTimevalClass; |
Przemyslaw Szczepaniak | 5f72472 | 2017-07-13 14:24:52 +0100 | [diff] [blame] | 68 | jclass JniConstants::structTimespecClass; |
Elliott Hughes | 95b0038 | 2013-03-21 12:08:11 -0700 | [diff] [blame] | 69 | jclass JniConstants::structUcredClass; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 70 | jclass JniConstants::structUtsnameClass; |
Neil Fuller | 4ebb967 | 2015-07-07 17:00:21 +0100 | [diff] [blame] | 71 | jclass JniConstants::unixSocketAddressClass; |
Narayan Kamath | b926f19 | 2015-01-08 18:37:52 +0000 | [diff] [blame] | 72 | jclass JniConstants::zipEntryClass; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 73 | |
| 74 | static jclass findClass(JNIEnv* env, const char* name) { |
| 75 | ScopedLocalRef<jclass> localClass(env, env->FindClass(name)); |
| 76 | jclass result = reinterpret_cast<jclass>(env->NewGlobalRef(localClass.get())); |
| 77 | if (result == NULL) { |
| 78 | ALOGE("failed to find class '%s'", name); |
| 79 | abort(); |
| 80 | } |
| 81 | return result; |
| 82 | } |
| 83 | |
| 84 | void JniConstants::init(JNIEnv* env) { |
Dimitry Ivanov | 13803f6 | 2016-03-21 13:37:12 -0700 | [diff] [blame] | 85 | // Fast check |
| 86 | if (g_constants_initialized) { |
| 87 | // already initialized |
| 88 | return; |
| 89 | } |
| 90 | |
| 91 | // Slightly slower check |
| 92 | std::lock_guard<std::mutex> guard(g_constants_mutex); |
| 93 | if (g_constants_initialized) { |
| 94 | // already initialized |
| 95 | return; |
| 96 | } |
| 97 | |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 98 | booleanClass = findClass(env, "java/lang/Boolean"); |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 99 | byteArrayClass = findClass(env, "[B"); |
Kenny Root | f4a3c1e | 2013-03-07 11:20:28 -0800 | [diff] [blame] | 100 | calendarClass = findClass(env, "java/util/Calendar"); |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 101 | charsetICUClass = findClass(env, "java/nio/charset/CharsetICU"); |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 102 | doubleClass = findClass(env, "java/lang/Double"); |
Elliott Hughes | 1a3f8f4 | 2014-04-23 17:58:19 -0700 | [diff] [blame] | 103 | errnoExceptionClass = findClass(env, "android/system/ErrnoException"); |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 104 | fileDescriptorClass = findClass(env, "java/io/FileDescriptor"); |
Elliott Hughes | 1a3f8f4 | 2014-04-23 17:58:19 -0700 | [diff] [blame] | 105 | gaiExceptionClass = findClass(env, "android/system/GaiException"); |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 106 | inet6AddressClass = findClass(env, "java/net/Inet6Address"); |
Yi Kong | c9be467 | 2016-07-11 00:07:32 +0100 | [diff] [blame] | 107 | inet6AddressHolderClass = findClass(env, "java/net/Inet6Address$Inet6AddressHolder"); |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 108 | inetAddressClass = findClass(env, "java/net/InetAddress"); |
Piotr Jastrzebski | 6ea79a1 | 2015-05-06 14:00:36 +0100 | [diff] [blame] | 109 | inetAddressHolderClass = findClass(env, "java/net/InetAddress$InetAddressHolder"); |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 110 | inetSocketAddressClass = findClass(env, "java/net/InetSocketAddress"); |
Piotr Jastrzebski | 75fc6d2 | 2015-06-02 10:58:22 +0100 | [diff] [blame] | 111 | inetSocketAddressHolderClass = findClass(env, "java/net/InetSocketAddress$InetSocketAddressHolder"); |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 112 | integerClass = findClass(env, "java/lang/Integer"); |
| 113 | localeDataClass = findClass(env, "libcore/icu/LocaleData"); |
| 114 | longClass = findClass(env, "java/lang/Long"); |
Tobias Thierer | 8e11f84 | 2017-10-23 16:17:17 +0100 | [diff] [blame] | 115 | mutableIntClass = findClass(env, "libcore/util/MutableInt"); |
| 116 | mutableLongClass = findClass(env, "libcore/util/MutableLong"); |
Erik Kline | 25b67b1 | 2015-02-25 18:33:29 +0900 | [diff] [blame] | 117 | netlinkSocketAddressClass = findClass(env, "android/system/NetlinkSocketAddress"); |
Lorenzo Colitti | 63daad5 | 2015-03-12 01:22:36 +0900 | [diff] [blame] | 118 | packetSocketAddressClass = findClass(env, "android/system/PacketSocketAddress"); |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 119 | patternSyntaxExceptionClass = findClass(env, "java/util/regex/PatternSyntaxException"); |
Jeff Brown | dc176c5 | 2013-04-02 18:09:29 -0700 | [diff] [blame] | 120 | referenceClass = findClass(env, "java/lang/ref/Reference"); |
Yi Kong | 65eaf99 | 2016-04-01 14:53:42 +0100 | [diff] [blame] | 121 | socketTaggerClass = findClass(env, "dalvik/system/SocketTagger"); |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 122 | stringClass = findClass(env, "java/lang/String"); |
Elliott Hughes | 1a3f8f4 | 2014-04-23 17:58:19 -0700 | [diff] [blame] | 123 | structAddrinfoClass = findClass(env, "android/system/StructAddrinfo"); |
| 124 | structFlockClass = findClass(env, "android/system/StructFlock"); |
| 125 | structGroupReqClass = findClass(env, "android/system/StructGroupReq"); |
Yi Kong | e26fd49 | 2016-06-08 15:23:53 +0200 | [diff] [blame] | 126 | structIfaddrs = findClass(env, "android/system/StructIfaddrs"); |
Elliott Hughes | 1a3f8f4 | 2014-04-23 17:58:19 -0700 | [diff] [blame] | 127 | structLingerClass = findClass(env, "android/system/StructLinger"); |
| 128 | structPasswdClass = findClass(env, "android/system/StructPasswd"); |
| 129 | structPollfdClass = findClass(env, "android/system/StructPollfd"); |
| 130 | structStatClass = findClass(env, "android/system/StructStat"); |
| 131 | structStatVfsClass = findClass(env, "android/system/StructStatVfs"); |
| 132 | structTimevalClass = findClass(env, "android/system/StructTimeval"); |
Przemyslaw Szczepaniak | 5f72472 | 2017-07-13 14:24:52 +0100 | [diff] [blame] | 133 | structTimespecClass = findClass(env, "android/system/StructTimespec"); |
Elliott Hughes | 1a3f8f4 | 2014-04-23 17:58:19 -0700 | [diff] [blame] | 134 | structUcredClass = findClass(env, "android/system/StructUcred"); |
| 135 | structUtsnameClass = findClass(env, "android/system/StructUtsname"); |
Neil Fuller | 4ebb967 | 2015-07-07 17:00:21 +0100 | [diff] [blame] | 136 | unixSocketAddressClass = findClass(env, "android/system/UnixSocketAddress"); |
Narayan Kamath | b926f19 | 2015-01-08 18:37:52 +0000 | [diff] [blame] | 137 | zipEntryClass = findClass(env, "java/util/zip/ZipEntry"); |
Dimitry Ivanov | 13803f6 | 2016-03-21 13:37:12 -0700 | [diff] [blame] | 138 | |
| 139 | g_constants_initialized = true; |
Brian Carlstrom | dd8af23 | 2012-05-13 23:56:07 -0700 | [diff] [blame] | 140 | } |
Logan Chien | 63e4917 | 2016-06-08 11:33:36 +0800 | [diff] [blame] | 141 | |
| 142 | namespace android { |
| 143 | |
| 144 | void ClearJniConstantsCache() { |
| 145 | g_constants_initialized = false; |
| 146 | ClearJNIHelpLocalCache(); |
| 147 | } |
| 148 | |
| 149 | } |