1044702c35
This allows the possibility to use it with Layoutlib/Helium. Test: lunch sdk && m libandroid_runtime Change-Id: I93b1ebec968566aeb9209da607ce8a80489ed060
216 lines
9.0 KiB
C++
216 lines
9.0 KiB
C++
/*
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* Copyright (C) 2018 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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#include "jni.h"
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#include "core_jni_helpers.h"
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#include <unicode/putil.h>
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#include <clocale>
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#include <sstream>
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#include <unordered_map>
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#include <vector>
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using namespace std;
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/*
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* This is responsible for setting up the JNI environment for communication between
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* the Java and native parts of layoutlib, including registering native methods.
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* This is mostly achieved by copying the way it is done in the platform
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* (see AndroidRuntime.cpp).
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*/
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static JavaVM* javaVM;
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namespace android {
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extern int register_android_animation_PropertyValuesHolder(JNIEnv *env);
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extern int register_android_content_AssetManager(JNIEnv* env);
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extern int register_android_content_StringBlock(JNIEnv* env);
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extern int register_android_content_XmlBlock(JNIEnv* env);
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extern int register_android_content_res_ApkAssets(JNIEnv* env);
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extern int register_android_database_CursorWindow(JNIEnv* env);
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extern int register_android_database_SQLiteConnection(JNIEnv* env);
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extern int register_android_database_SQLiteGlobal(JNIEnv* env);
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extern int register_android_database_SQLiteDebug(JNIEnv* env);
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extern int register_android_os_FileObserver(JNIEnv* env);
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extern int register_android_os_MessageQueue(JNIEnv* env);
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extern int register_android_os_SystemClock(JNIEnv* env);
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extern int register_android_os_SystemProperties(JNIEnv* env);
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extern int register_android_os_Trace(JNIEnv* env);
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extern int register_android_text_AndroidCharacter(JNIEnv* env);
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extern int register_android_util_EventLog(JNIEnv* env);
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extern int register_android_util_Log(JNIEnv* env);
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extern int register_android_util_jar_StrictJarFile(JNIEnv* env);
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extern int register_com_android_internal_util_VirtualRefBasePtr(JNIEnv *env);
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#define REG_JNI(name) { name }
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struct RegJNIRec {
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int (*mProc)(JNIEnv*);
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};
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// Map of all possible class names to register to their corresponding JNI registration function pointer
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// The actual list of registered classes will be determined at runtime via the 'native_classes' System property
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static const std::unordered_map<std::string, RegJNIRec> gRegJNIMap = {
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{"android.animation.PropertyValuesHolder",
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REG_JNI(register_android_animation_PropertyValuesHolder)},
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#ifdef __linux__
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{"android.content.res.ApkAssets", REG_JNI(register_android_content_res_ApkAssets)},
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{"android.content.res.AssetManager", REG_JNI(register_android_content_AssetManager)},
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{"android.database.CursorWindow", REG_JNI(register_android_database_CursorWindow)},
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{"android.database.sqlite.SQLiteConnection",
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REG_JNI(register_android_database_SQLiteConnection)},
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{"android.database.sqlite.SQLiteGlobal", REG_JNI(register_android_database_SQLiteGlobal)},
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{"android.database.sqlite.SQLiteDebug", REG_JNI(register_android_database_SQLiteDebug)},
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#endif
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{"android.content.res.StringBlock", REG_JNI(register_android_content_StringBlock)},
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{"android.content.res.XmlBlock", REG_JNI(register_android_content_XmlBlock)},
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#ifdef __linux__
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{"android.os.FileObserver", REG_JNI(register_android_os_FileObserver)},
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{"android.os.MessageQueue", REG_JNI(register_android_os_MessageQueue)},
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#endif
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{"android.os.SystemClock", REG_JNI(register_android_os_SystemClock)},
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{"android.os.SystemProperties", REG_JNI(register_android_os_SystemProperties)},
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{"android.os.Trace", REG_JNI(register_android_os_Trace)},
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{"android.text.AndroidCharacter", REG_JNI(register_android_text_AndroidCharacter)},
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{"android.util.EventLog", REG_JNI(register_android_util_EventLog)},
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{"android.util.Log", REG_JNI(register_android_util_Log)},
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{"android.util.jar.StrictJarFile", REG_JNI(register_android_util_jar_StrictJarFile)},
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{"com.android.internal.util.VirtualRefBasePtr",
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REG_JNI(register_com_android_internal_util_VirtualRefBasePtr)},
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};
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// Vector to store the names of classes that need delegates of their native methods
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static vector<string> classesToDelegate;
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static int register_jni_procs(const std::unordered_map<std::string, RegJNIRec>& jniRegMap,
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const vector<string>& classesToRegister, JNIEnv* env) {
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for (const string& className : classesToRegister) {
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if (jniRegMap.at(className).mProc(env) < 0) {
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return -1;
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}
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}
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return 0;
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}
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int AndroidRuntime::registerNativeMethods(JNIEnv* env,
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const char* className, const JNINativeMethod* gMethods, int numMethods) {
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string classNameString = string(className);
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if (find(classesToDelegate.begin(), classesToDelegate.end(), classNameString)
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!= classesToDelegate.end()) {
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// Register native methods to the delegate class <classNameString>_NativeDelegate
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// by adding _Original to the name of each method.
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replace(classNameString.begin(), classNameString.end(), '$', '_');
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string delegateClassName = classNameString + "_NativeDelegate";
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jclass clazz = env->FindClass(delegateClassName.c_str());
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JNINativeMethod gTypefaceDelegateMethods[numMethods];
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for (int i = 0; i < numMethods; i++) {
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JNINativeMethod gTypefaceMethod = gMethods[i];
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string newName = string(gTypefaceMethod.name) + "_Original";
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gTypefaceDelegateMethods[i].name = strdup(newName.c_str());
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gTypefaceDelegateMethods[i].signature = gTypefaceMethod.signature;
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gTypefaceDelegateMethods[i].fnPtr = gTypefaceMethod.fnPtr;
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}
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int result = env->RegisterNatives(clazz, gTypefaceDelegateMethods, numMethods);
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for (int i = 0; i < numMethods; i++) {
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free((char*)gTypefaceDelegateMethods[i].name);
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}
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return result;
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}
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jclass clazz = env->FindClass(className);
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return env->RegisterNatives(clazz, gMethods, numMethods);
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}
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JNIEnv* AndroidRuntime::getJNIEnv() {
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JNIEnv* env;
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if (javaVM->GetEnv((void**) &env, JNI_VERSION_1_6) != JNI_OK)
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return nullptr;
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return env;
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}
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JavaVM* AndroidRuntime::getJavaVM() {
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return javaVM;
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}
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static vector<string> parseCsv(const string& csvString) {
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vector<string> result;
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istringstream stream(csvString);
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string segment;
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while(getline(stream, segment, ','))
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{
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result.push_back(segment);
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}
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return result;
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}
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static vector<string> parseCsv(JNIEnv* env, jstring csvJString) {
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const char* charArray = env->GetStringUTFChars(csvJString, 0);
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string csvString(charArray);
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vector<string> result = parseCsv(csvString);
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env->ReleaseStringUTFChars(csvJString, charArray);
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return result;
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}
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} // namespace android
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using namespace android;
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JNIEXPORT jint JNI_OnLoad(JavaVM* vm, void*) {
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javaVM = vm;
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JNIEnv* env = nullptr;
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if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) {
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return JNI_ERR;
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}
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// Configuration is stored as java System properties.
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// Get a reference to System.getProperty
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jclass system = FindClassOrDie(env, "java/lang/System");
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jmethodID getPropertyMethod = GetStaticMethodIDOrDie(env, system, "getProperty",
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"(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;");
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// Get the names of classes that have to delegate their native methods
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auto delegateNativesToNativesString =
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(jstring) env->CallStaticObjectMethod(system,
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getPropertyMethod, env->NewStringUTF("delegate_natives_to_natives"),
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env->NewStringUTF(""));
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classesToDelegate = parseCsv(env, delegateNativesToNativesString);
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// Get the names of classes that need to register their native methods
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auto nativesClassesJString =
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(jstring) env->CallStaticObjectMethod(system,
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getPropertyMethod, env->NewStringUTF("native_classes"),
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env->NewStringUTF(""));
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vector<string> classesToRegister = parseCsv(env, nativesClassesJString);
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if (register_jni_procs(gRegJNIMap, classesToRegister, env) < 0) {
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return JNI_ERR;
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}
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// Set the location of ICU data
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auto stringPath = (jstring) env->CallStaticObjectMethod(system,
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getPropertyMethod, env->NewStringUTF("icu.dir"),
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env->NewStringUTF(""));
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const char* path = env->GetStringUTFChars(stringPath, 0);
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u_setDataDirectory(path);
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env->ReleaseStringUTFChars(stringPath, path);
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// Use English locale for number format to ensure correct parsing of floats when using strtof
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setlocale(LC_NUMERIC, "en_US.UTF-8");
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return JNI_VERSION_1_6;
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}
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