mirror of https://github.com/axmolengine/axmol.git
279 lines
9.2 KiB
C++
279 lines
9.2 KiB
C++
/****************************************************************************
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Copyright (c) 2010-2012 cocos2d-x.org
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Copyright (c) 2013-2014 Chukong Technologies Inc.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "JniHelper.h"
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#include <android/log.h>
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#include <string.h>
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#include <pthread.h>
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#define LOG_TAG "JniHelper"
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#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG,LOG_TAG,__VA_ARGS__)
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#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
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static pthread_key_t g_key;
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jclass _getClassID(const char *className) {
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if (nullptr == className) {
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return nullptr;
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}
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JNIEnv* env = cocos2d::JniHelper::getEnv();
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jstring _jstrClassName = env->NewStringUTF(className);
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jclass _clazz = (jclass) env->CallObjectMethod(cocos2d::JniHelper::classloader,
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cocos2d::JniHelper::loadclassMethod_methodID,
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_jstrClassName);
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if (nullptr == _clazz) {
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LOGE("Classloader failed to find class of %s", className);
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env->ExceptionClear();
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}
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env->DeleteLocalRef(_jstrClassName);
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return _clazz;
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}
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void _detachCurrentThread(void* a) {
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cocos2d::JniHelper::getJavaVM()->DetachCurrentThread();
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}
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namespace cocos2d {
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JavaVM* JniHelper::_psJavaVM = nullptr;
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jmethodID JniHelper::loadclassMethod_methodID = nullptr;
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jobject JniHelper::classloader = nullptr;
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JavaVM* JniHelper::getJavaVM() {
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pthread_t thisthread = pthread_self();
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LOGD("JniHelper::getJavaVM(), pthread_self() = %ld", thisthread);
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return _psJavaVM;
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}
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void JniHelper::setJavaVM(JavaVM *javaVM) {
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pthread_t thisthread = pthread_self();
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LOGD("JniHelper::setJavaVM(%p), pthread_self() = %ld", javaVM, thisthread);
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_psJavaVM = javaVM;
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pthread_key_create(&g_key, _detachCurrentThread);
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}
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JNIEnv* JniHelper::cacheEnv(JavaVM* jvm) {
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JNIEnv* _env = nullptr;
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// get jni environment
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jint ret = jvm->GetEnv((void**)&_env, JNI_VERSION_1_4);
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switch (ret) {
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case JNI_OK :
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// Success!
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pthread_setspecific(g_key, _env);
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return _env;
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case JNI_EDETACHED :
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// Thread not attached
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if (jvm->AttachCurrentThread(&_env, nullptr) < 0)
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{
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LOGE("Failed to get the environment using AttachCurrentThread()");
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return nullptr;
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} else {
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// Success : Attached and obtained JNIEnv!
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pthread_setspecific(g_key, _env);
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return _env;
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}
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case JNI_EVERSION :
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// Cannot recover from this error
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LOGE("JNI interface version 1.4 not supported");
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default :
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LOGE("Failed to get the environment using GetEnv()");
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return nullptr;
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}
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}
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JNIEnv* JniHelper::getEnv() {
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JNIEnv *_env = (JNIEnv *)pthread_getspecific(g_key);
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if (_env == nullptr)
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_env = JniHelper::cacheEnv(_psJavaVM);
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return _env;
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}
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bool JniHelper::setClassLoaderFrom(jobject activityinstance) {
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JniMethodInfo _getclassloaderMethod;
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if (!JniHelper::getMethodInfo_DefaultClassLoader(_getclassloaderMethod,
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"android/content/Context",
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"getClassLoader",
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"()Ljava/lang/ClassLoader;")) {
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return false;
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}
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jobject _c = cocos2d::JniHelper::getEnv()->CallObjectMethod(activityinstance,
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_getclassloaderMethod.methodID);
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if (nullptr == _c) {
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return false;
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}
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JniMethodInfo _m;
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if (!JniHelper::getMethodInfo_DefaultClassLoader(_m,
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"java/lang/ClassLoader",
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"loadClass",
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"(Ljava/lang/String;)Ljava/lang/Class;")) {
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return false;
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}
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JniHelper::classloader = cocos2d::JniHelper::getEnv()->NewGlobalRef(_c);
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JniHelper::loadclassMethod_methodID = _m.methodID;
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return true;
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}
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bool JniHelper::getStaticMethodInfo(JniMethodInfo &methodinfo,
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const char *className,
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const char *methodName,
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const char *paramCode) {
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if ((nullptr == className) ||
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(nullptr == methodName) ||
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(nullptr == paramCode)) {
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return false;
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}
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JNIEnv *env = JniHelper::getEnv();
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if (!env) {
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LOGE("Failed to get JNIEnv");
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return false;
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}
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jclass classID = _getClassID(className);
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if (! classID) {
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LOGE("Failed to find class %s", className);
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env->ExceptionClear();
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return false;
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}
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jmethodID methodID = env->GetStaticMethodID(classID, methodName, paramCode);
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if (! methodID) {
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LOGE("Failed to find static method id of %s", methodName);
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env->ExceptionClear();
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return false;
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}
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methodinfo.classID = classID;
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methodinfo.env = env;
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methodinfo.methodID = methodID;
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return true;
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}
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bool JniHelper::getMethodInfo_DefaultClassLoader(JniMethodInfo &methodinfo,
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const char *className,
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const char *methodName,
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const char *paramCode) {
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if ((nullptr == className) ||
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(nullptr == methodName) ||
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(nullptr == paramCode)) {
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return false;
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}
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JNIEnv *env = JniHelper::getEnv();
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if (!env) {
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return false;
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}
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jclass classID = env->FindClass(className);
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if (! classID) {
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LOGE("Failed to find class %s", className);
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env->ExceptionClear();
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return false;
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}
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jmethodID methodID = env->GetMethodID(classID, methodName, paramCode);
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if (! methodID) {
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LOGE("Failed to find method id of %s", methodName);
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env->ExceptionClear();
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return false;
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}
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methodinfo.classID = classID;
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methodinfo.env = env;
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methodinfo.methodID = methodID;
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return true;
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}
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bool JniHelper::getMethodInfo(JniMethodInfo &methodinfo,
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const char *className,
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const char *methodName,
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const char *paramCode) {
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if ((nullptr == className) ||
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(nullptr == methodName) ||
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(nullptr == paramCode)) {
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return false;
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}
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JNIEnv *env = JniHelper::getEnv();
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if (!env) {
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return false;
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}
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jclass classID = _getClassID(className);
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if (! classID) {
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LOGE("Failed to find class %s", className);
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env->ExceptionClear();
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return false;
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}
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jmethodID methodID = env->GetMethodID(classID, methodName, paramCode);
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if (! methodID) {
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LOGE("Failed to find method id of %s", methodName);
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env->ExceptionClear();
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return false;
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}
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methodinfo.classID = classID;
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methodinfo.env = env;
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methodinfo.methodID = methodID;
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return true;
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}
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std::string JniHelper::jstring2string(jstring jstr) {
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if (jstr == nullptr) {
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return "";
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}
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JNIEnv *env = JniHelper::getEnv();
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if (!env) {
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return nullptr;
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}
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const char* chars = env->GetStringUTFChars(jstr, nullptr);
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std::string ret(chars);
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env->ReleaseStringUTFChars(jstr, chars);
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return ret;
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}
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} //namespace cocos2d
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