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Elliott Hughesbf86d042011-08-31 17:53:14 -07001/*
2 * Copyright (C) 2008 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
Andreas Gampe277ccbd2014-11-03 21:36:10 -080017#include "java_lang_Runtime.h"
18
Elliott Hughesc8fece32013-01-02 11:27:23 -080019#include <dlfcn.h>
Elliott Hughesbf86d042011-08-31 17:53:14 -070020#include <limits.h>
Elliott Hugheseac76672012-05-24 21:56:51 -070021#include <unistd.h>
Elliott Hughesbf86d042011-08-31 17:53:14 -070022
Andreas Gampe794ad762015-02-23 08:12:24 -080023#include "base/macros.h"
Ian Rogers1d54e732013-05-02 21:10:01 -070024#include "gc/heap.h"
Mathieu Chartiereb8167a2014-05-07 15:43:14 -070025#include "handle_scope-inl.h"
Elliott Hughesbf86d042011-08-31 17:53:14 -070026#include "jni_internal.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080027#include "mirror/class_loader.h"
Elliott Hughesbf86d042011-08-31 17:53:14 -070028#include "runtime.h"
Ian Rogers00f7d0e2012-07-19 15:28:27 -070029#include "scoped_thread_state_change.h"
Elliott Hughesbf86d042011-08-31 17:53:14 -070030#include "ScopedUtfChars.h"
Mathieu Chartiereb8167a2014-05-07 15:43:14 -070031#include "verify_object-inl.h"
Elliott Hughesbf86d042011-08-31 17:53:14 -070032
Dmitriy Ivanov785049f2014-07-18 10:08:57 -070033#include <sstream>
34#ifdef HAVE_ANDROID_OS
35// This function is provided by android linker.
36extern "C" void android_update_LD_LIBRARY_PATH(const char* ld_library_path);
37#endif // HAVE_ANDROID_OS
38
Elliott Hughesbf86d042011-08-31 17:53:14 -070039namespace art {
40
Ian Rogers00f7d0e2012-07-19 15:28:27 -070041static void Runtime_gc(JNIEnv*, jclass) {
Anwar Ghuloum87183592013-08-14 12:12:19 -070042 if (Runtime::Current()->IsExplicitGcDisabled()) {
43 LOG(INFO) << "Explicit GC skipped.";
44 return;
45 }
Elliott Hughesb3bd5f02012-03-08 21:05:27 -080046 Runtime::Current()->GetHeap()->CollectGarbage(false);
Elliott Hughesbf86d042011-08-31 17:53:14 -070047}
48
Andreas Gampe794ad762015-02-23 08:12:24 -080049NO_RETURN static void Runtime_nativeExit(JNIEnv*, jclass, jint status) {
Dmitry Petrochenko108437e2014-07-03 17:07:45 +070050 LOG(INFO) << "System.exit called, status: " << status;
Elliott Hughes28c7bfd2012-06-01 12:45:40 -070051 Runtime::Current()->CallExitHook(status);
Elliott Hughesbf86d042011-08-31 17:53:14 -070052 exit(status);
53}
54
Dmitriy Ivanov785049f2014-07-18 10:08:57 -070055static void SetLdLibraryPath(JNIEnv* env, jstring javaLdLibraryPathJstr, jstring javaDexPathJstr) {
56#ifdef HAVE_ANDROID_OS
57 std::stringstream ss;
58 if (javaLdLibraryPathJstr != nullptr) {
59 ScopedUtfChars javaLdLibraryPath(env, javaLdLibraryPathJstr);
60 if (javaLdLibraryPath.c_str() != nullptr) {
61 ss << javaLdLibraryPath.c_str();
62 }
Elliott Hughesbf86d042011-08-31 17:53:14 -070063 }
64
Dmitriy Ivanov785049f2014-07-18 10:08:57 -070065 if (javaDexPathJstr != nullptr) {
66 ScopedUtfChars javaDexPath(env, javaDexPathJstr);
67 if (javaDexPath.c_str() != nullptr) {
68 std::vector<std::string> dexPathVector;
69 Split(javaDexPath.c_str(), ':', &dexPathVector);
70
71 for (auto abi : art::Runtime::Current()->GetCpuAbilist()) {
72 for (auto zip_path : dexPathVector) {
73 // Native libraries live under lib/<abi>/ inside .apk file.
74 ss << ":" << zip_path << "!" << "lib/" << abi;
75 }
76 }
Elliott Hughesc8fece32013-01-02 11:27:23 -080077 }
78 }
79
Dmitriy Ivanov785049f2014-07-18 10:08:57 -070080 std::string ldLibraryPathStr = ss.str();
81 const char* ldLibraryPath = ldLibraryPathStr.c_str();
82 if (*ldLibraryPath == ':') {
83 ++ldLibraryPath;
84 }
85
86 android_update_LD_LIBRARY_PATH(ldLibraryPath);
87#else
88 LOG(WARNING) << "android_update_LD_LIBRARY_PATH not found; .so dependencies will not work!";
89 UNUSED(javaLdLibraryPathJstr, javaDexPathJstr, env);
90#endif
91}
92
93static jstring Runtime_nativeLoad(JNIEnv* env, jclass, jstring javaFilename, jobject javaLoader,
94 jstring javaLdLibraryPathJstr, jstring javaDexPathJstr) {
95 ScopedUtfChars filename(env, javaFilename);
96 if (filename.c_str() == nullptr) {
97 return nullptr;
98 }
99
100 SetLdLibraryPath(env, javaLdLibraryPathJstr, javaDexPathJstr);
101
Ian Rogers68d8b422014-07-17 11:09:10 -0700102 std::string error_msg;
Ian Rogers1eb512d2013-10-18 15:42:20 -0700103 {
Ian Rogers1eb512d2013-10-18 15:42:20 -0700104 JavaVMExt* vm = Runtime::Current()->GetJavaVM();
Ian Rogers68d8b422014-07-17 11:09:10 -0700105 bool success = vm->LoadNativeLibrary(env, filename.c_str(), javaLoader, &error_msg);
Ian Rogers1eb512d2013-10-18 15:42:20 -0700106 if (success) {
107 return nullptr;
108 }
Elliott Hughesbf86d042011-08-31 17:53:14 -0700109 }
110
Brian Carlstrom75fe90c2013-06-26 22:26:16 -0700111 // Don't let a pending exception from JNI_OnLoad cause a CheckJNI issue with NewStringUTF.
112 env->ExceptionClear();
Ian Rogers68d8b422014-07-17 11:09:10 -0700113 return env->NewStringUTF(error_msg.c_str());
Elliott Hughesbf86d042011-08-31 17:53:14 -0700114}
115
Elliott Hughes1bac54f2012-03-16 12:48:31 -0700116static jlong Runtime_maxMemory(JNIEnv*, jclass) {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800117 return Runtime::Current()->GetHeap()->GetMaxMemory();
Elliott Hughesbf86d042011-08-31 17:53:14 -0700118}
119
Elliott Hughes1bac54f2012-03-16 12:48:31 -0700120static jlong Runtime_totalMemory(JNIEnv*, jclass) {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800121 return Runtime::Current()->GetHeap()->GetTotalMemory();
Elliott Hughesbf86d042011-08-31 17:53:14 -0700122}
123
Elliott Hughes1bac54f2012-03-16 12:48:31 -0700124static jlong Runtime_freeMemory(JNIEnv*, jclass) {
Elliott Hughesb3bd5f02012-03-08 21:05:27 -0800125 return Runtime::Current()->GetHeap()->GetFreeMemory();
Elliott Hughesbf86d042011-08-31 17:53:14 -0700126}
127
128static JNINativeMethod gMethods[] = {
Ian Rogers53b8b092014-03-13 23:45:53 -0700129 NATIVE_METHOD(Runtime, freeMemory, "!()J"),
Elliott Hugheseac76672012-05-24 21:56:51 -0700130 NATIVE_METHOD(Runtime, gc, "()V"),
Ian Rogers53b8b092014-03-13 23:45:53 -0700131 NATIVE_METHOD(Runtime, maxMemory, "!()J"),
Elliott Hughes28c7bfd2012-06-01 12:45:40 -0700132 NATIVE_METHOD(Runtime, nativeExit, "(I)V"),
Dmitriy Ivanov785049f2014-07-18 10:08:57 -0700133 NATIVE_METHOD(Runtime, nativeLoad, "(Ljava/lang/String;Ljava/lang/ClassLoader;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;"),
Ian Rogers53b8b092014-03-13 23:45:53 -0700134 NATIVE_METHOD(Runtime, totalMemory, "!()J"),
Elliott Hughesbf86d042011-08-31 17:53:14 -0700135};
136
Elliott Hughesbf86d042011-08-31 17:53:14 -0700137void register_java_lang_Runtime(JNIEnv* env) {
Elliott Hugheseac76672012-05-24 21:56:51 -0700138 REGISTER_NATIVE_METHODS("java/lang/Runtime");
Elliott Hughesbf86d042011-08-31 17:53:14 -0700139}
140
141} // namespace art