Fixing compilation under Windows

build.gradle

@@ -127,11 +127,29 @@ project('agent') {
     }
 }
 
+project('native') {
+    task compile(type: Exec) {
+        if (root.os != Os.WINDOWS) {
+            commandLine 'gcc'
+            args "-I${jre}/../include"
+            args "-I${jre}/../include/linux"
+            args '-shared'
+            args 'natives.c'
+            args '-o'
+            args 'build/libnatives.so'
+        } else {
+            commandLine 'compile.cmd'
+            environment ARCH: root.arch == Arch.X86 ? 'x86' : 'x64'
+            environment JAVA_HOME: jre
+        }
+    }
+}
+
 project('dcevm') {
     dependencies {
         compile project(':agent')
         compile group: 'asm', name: 'asm-all', version: '3.3.+'
-        compile files(System.getProperty("java.home") + '/../lib/tools.jar')
+        compile files(jre + '/../lib/tools.jar')
 
         testCompile group: 'junit', name: 'junit', version: '4.11'
     }

native/compile.cmd

@@ -1,6 +1,4 @@
 set WINDOWS_SDK=c:\Program Files\Microsoft SDKs\Windows\v7.1
 call "%WINDOWS_SDK%\bin\setenv.cmd" /%ARCH%
 
-call %VC%\vcvarsall.bat
-
-%VC%\bin\cl /I%JAVA_HOME%\include /I%JAVA_HOME%\include\win32 /I%VC%\include /I%VC%\lib /I%MSDK%\Lib libHelloWorld.c /FelibHelloWorld.dll /LD
+%VC%\bin\cl /I%JAVA_HOME%\include /I%JAVA_HOME%\include\win32 natives.c /Fenatives.dll /LD

native/natives.c

@@ -28,147 +28,10 @@
 #include <stdlib.h>
 #include "natives.h"
 
-JNIEXPORT jint JNICALL Java_at_ssw_hotswap_test_natives_SimpleNativeTest_00024A_value(JNIEnv *env, jclass c) {
+JNIEXPORT jint JNICALL Java_com_github_dcevm_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) {
+JNIEXPORT jint JNICALL Java_com_github_dcevm_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;
-}
-
+}

native/natives.h

@@ -28,45 +28,17 @@
 #define NATIVES
 
 /*
- * Class:     at_ssw_hotswap_test_natives_SimpleNativeTest_A
+ * Class:     com_github_dcevm_test_natives_SimpleNativeTest_A
  * Method:    value
  * Signature: ()I
  */
-JNIEXPORT jint JNICALL Java_at_ssw_hotswap_test_natives_SimpleNativeTest_00024A_value(JNIEnv *, jclass);
+JNIEXPORT jint JNICALL Java_com_github_dcevm_test_natives_SimpleNativeTest_00024A_value(JNIEnv *, jclass);
 
 /*
- * Class:     at_ssw_hotswap_test_natives_SimpleNativeTest_A
+ * Class:     com_github_dcevm_test_natives_SimpleNativeTest_A
  * Method:    value2
  * Signature: ()I
  */
-JNIEXPORT jint JNICALL Java_at_ssw_hotswap_test_natives_SimpleNativeTest_00024A_value2(JNIEnv *, jclass);
+JNIEXPORT jint JNICALL Java_com_github_dcevm_test_natives_SimpleNativeTest_00024A_value2(JNIEnv *, jclass);
 
-/*
- * Class:     at_ssw_hotswap_test_access_jni_JNIVMAccess
- * Method:    findClass
- * Signature: (String)Class
- */
-JNIEXPORT jclass JNICALL Java_at_ssw_hotswap_test_access_jni_JNIVMAccess_findClassNative(JNIEnv *, jclass, jstring);
-
-/*
- * Class:     at_ssw_hotswap_test_access_jni_JNIClassAccess
- * Method:    findMethod
- * Signature: (Class, String)Object
- */
-JNIEXPORT jobject JNICALL Java_at_ssw_hotswap_test_access_jni_JNIClassAccess_findMethodNative(JNIEnv *, jclass, jclass, jstring);
-
-/*
- * Class:     at_ssw_hotswap_test_access_jni_JNIClassAccess
- * Method:    getMethods
- * Signature: (Class)Object[]
- */
-JNIEXPORT jobjectArray JNICALL Java_at_ssw_hotswap_test_access_jni_JNIClassAccess_getMethodsNative(JNIEnv *, jclass, jclass);
-
-/*
- * Class:     at_ssw_hotswap_test_access_jni_JNIMethodAccess
- * Method:    invokeMethod
- * Signature: (Class, String, Object)Value
- */
-JNIEXPORT jobject JNICALL Java_at_ssw_hotswap_test_access_jni_JNIMethodAccess_invokeMethod(JNIEnv *, jclass, jclass, jobject, jstring, jstring, jboolean, jstring);
-
-#endif
+#endif // NATIVES

settings.gradle

@@ -1 +1 @@
-include 'agent', 'dcevm', 'hotspot'
+include 'agent', 'dcevm', 'hotspot', 'native'