added files.

SlinkyNative/include/JvmManager.hpp

@@ -0,0 +1,56 @@
+#pragma once
+
+#include <windows.h>
+#include "jdk/jni.h"
+#include "jdk/jvmti.h"
+#include <vector>
+#include <mutex>
+
+namespace SlinkyNative {
+
+class JvmManager {
+public:
+    static bool Initialize();
+    static void Shutdown();
+
+    static JavaVM* GetJavaVM();
+    static JNIEnv* GetEnv();
+    static jvmtiEnv* GetJvmti();
+
+    // Hook state management for getClassBytes and retransformClass
+    static void SetCaptureTarget(jclass targetClass);
+    static std::vector<unsigned char> GetCapturedBytes();
+    static void ClearCapturedBytes();
+
+    static void SetReplacementData(jclass targetClass, const unsigned char* data, jint length);
+    static bool WasReplacementApplied();
+    static void ClearReplacementData();
+
+private:
+    static void JNICALL OnClassFileLoadHook(
+        jvmtiEnv* jvmti_env,
+        JNIEnv* jni_env,
+        jclass class_being_redefined,
+        jobject loader,
+        const char* name,
+        jobject protection_domain,
+        jint class_data_len,
+        const unsigned char* class_data,
+        jint* new_class_data_len,
+        unsigned char** new_class_data);
+
+    static JavaVM* s_JavaVM;
+    static JNIEnv* s_JniEnv;
+    static jvmtiEnv* s_JvmtiEnv;
+
+    static std::mutex s_HookMutex;
+    static jclass s_CaptureTarget;
+    static std::vector<unsigned char> s_CapturedBytes;
+
+    static jclass s_ReplacementTarget;
+    static const unsigned char* s_ReplacementData;
+    static jint s_ReplacementLength;
+    static bool s_ReplacementApplied;
+};
+
+} // namespace SlinkyNative