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/*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include <stdio.h>
#include <jni.h>
#include <string.h>
#include <stdlib.h>
#include "natives.h"
JNIEXPORT jint JNICALL Java_at_ssw_hotswap_test_natives_SimpleNativeTest_00024A_value(JNIEnv *env, jclass c) {
return 1;
}
JNIEXPORT jint JNICALL Java_at_ssw_hotswap_test_natives_SimpleNativeTest_00024A_value2(JNIEnv *env, jclass c) {
return 2;
}
JNIEXPORT jclass JNICALL Java_at_ssw_hotswap_test_access_jni_JNIVMAccess_findClassNative(JNIEnv *env, jclass c, jstring s) {
const char* name = (*env)->GetStringUTFChars(env, s, 0);
jclass clazz = (*env)->FindClass(env, name);
(*env)->ReleaseStringUTFChars(env, s, name);
return clazz;
}
JNIEXPORT jobject JNICALL Java_at_ssw_hotswap_test_access_jni_JNIClassAccess_findMethodNative(JNIEnv *env, jclass c, jclass cls, jstring methodName) {
const char *methodstr = (*env)->GetStringUTFChars(env, methodName, 0);
jclass jCls = (*env)->GetObjectClass(env, cls);
// Get Method ID of getMethods()
jmethodID midGetFields = (*env)->GetMethodID(env, jCls, "getDeclaredMethods", "()[Ljava/lang/reflect/Method;");
(*env)->ExceptionDescribe(env);
jobjectArray jobjArray = (jobjectArray) (*env)->CallObjectMethod(env, cls, midGetFields);
jsize len = (*env)->GetArrayLength(env, jobjArray);
jsize i = 0;
for (i = 0; i < len; i++) {
jobject _strMethod = (*env)->GetObjectArrayElement(env, jobjArray, i);
jclass _methodClazz = (*env)->GetObjectClass(env, _strMethod);
jmethodID mid = (*env)->GetMethodID(env, _methodClazz, "getName", "()Ljava/lang/String;");
jstring _name = (jstring) (*env)->CallObjectMethod(env, _strMethod, mid);
const char *str = (*env)->GetStringUTFChars(env, _name, 0);
if (strcmp(str, methodstr) == 0) {
(*env)->ReleaseStringUTFChars(env, methodName, methodstr);
(*env)->ReleaseStringUTFChars(env, _name, str);
return _strMethod;
}
(*env)->ReleaseStringUTFChars(env, _name, str);
}
jclass exc = (*env)->FindClass(env, "java/lang/NoSuchMethodError");
(*env)->ThrowNew(env, exc, methodstr);
(*env)->ReleaseStringUTFChars(env, methodName, methodstr);
}
JNIEXPORT jobjectArray JNICALL Java_at_ssw_hotswap_test_access_jni_JNIClassAccess_getMethodsNative(JNIEnv *env, jclass c, jclass cls) {
jobjectArray array;
jclass jCls = (*env)->GetObjectClass(env, cls);
// Get Method ID of getMethods()
jmethodID midGetFields = (*env)->GetMethodID(env, jCls, "getDeclaredMethods", "()[Ljava/lang/reflect/Method;");
(*env)->ExceptionDescribe(env);
jobjectArray jobjArray = (jobjectArray) (*env)->CallObjectMethod(env, cls, midGetFields);
jsize len = (*env)->GetArrayLength(env, jobjArray);
jsize i = 0;
array = (*env)->NewObjectArray(env, len, (*env)->FindClass(env, "java/lang/reflect/Method"), 0);
for (i = 0; i < len; i++) {
jobject _strMethod = (*env)->GetObjectArrayElement(env, jobjArray, i);
(*env)->SetObjectArrayElement(env, array, i, _strMethod);
}
return array;
}
jobject callVoidMethod(JNIEnv *env, jobject obj, jboolean staticValue, jmethodID methodID, jvalue *params) {
if (staticValue) {
(*env)->CallStaticVoidMethodA(env, obj, methodID, params);
} else {
(*env)->CallVoidMethodA(env, obj, methodID, params);
}
return (*env)->NewGlobalRef(env, NULL);
}
jobject callIntMethod(JNIEnv *env, jobject obj, jboolean staticValue, jmethodID methodID, jvalue *params) {
jint intValue;
if (staticValue) {
intValue = (*env)->CallStaticIntMethodA(env, obj, methodID, params);
} else {
intValue = (*env)->CallIntMethodA(env, obj, methodID, params);
}
jclass clazz = (*env)->FindClass(env, "Ljava/lang/Integer;");
jmethodID methodIDInteger = (*env)->GetMethodID(env, clazz, "<init>", "(I)V");
return (*env)->NewObject(env, clazz, methodIDInteger, intValue);
}
jobject callObjectMethod(JNIEnv *env, jobject obj, jboolean staticValue, jmethodID methodID, jvalue *params) {
if (staticValue) {
return (*env)->CallStaticObjectMethodA(env, obj, methodID, params);
} else {
return (*env)->CallObjectMethodA(env, obj, methodID, params);
}
}
JNIEXPORT jobject JNICALL Java_at_ssw_hotswap_test_access_jni_JNIMethodAccess_invokeMethodNative(JNIEnv *env, jclass c, jclass cls, jobject obj, jstring methodName, jstring retValue, jboolean staticValue, jstring descriptor, jobjectArray params) {
const char *methodstr = (*env)->GetStringUTFChars(env, methodName, 0);
const char *descriptorstr = (*env)->GetStringUTFChars(env, descriptor, 0);
const char *retValuestr = (*env)->GetStringUTFChars(env, retValue, 0);
jmethodID methodID;
if (staticValue) {
methodID = (*env)->GetStaticMethodID(env, cls, methodstr, descriptorstr);
} else {
methodID = (*env)->GetMethodID(env, cls, methodstr, descriptorstr);
}
jsize len = (*env)->GetArrayLength(env, params);
jvalue *m = (jvalue*) malloc(sizeof (jvalue) * len);
jvalue *mm = m;
int i = 0;
for (i; i < len; i++) {
*mm = (jvalue)(*env)->GetObjectArrayElement(env, params, i);
mm += 1;
}
jobject object = (*env)->NewGlobalRef(env, NULL);
if (strcmp(retValuestr, "void") == 0) {
object = callVoidMethod(env, obj, staticValue, methodID, m);
} else if (strcmp(retValuestr, "int") == 0) {
object = callIntMethod(env, obj, staticValue, methodID, m);
} else if (strcmp(retValuestr, "java.lang.Object") == 0) {
object = callObjectMethod(env, obj, staticValue, methodID, m);
} else {
jclass exc = (*env)->FindClass(env, "java.lang.NotImplementedException");
(*env)->ThrowNew(env, exc, "required retValue: bool/int/object");
}
(*env)->ReleaseStringUTFChars(env, methodName, methodstr);
(*env)->ReleaseStringUTFChars(env, descriptor, descriptorstr);
(*env)->ReleaseStringUTFChars(env, retValue, retValuestr);
return object;
}
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