1 files changed, 29 insertions, 0 deletions
diff --git a/src/newt/native/NewtCommon.c b/src/newt/native/NewtCommon.c
index 8b64ec37f..353dcb46f 100644
--- a/src/newt/native/NewtCommon.c
+++ b/src/newt/native/NewtCommon.c
@@ -1,6 +1,23 @@
 
 #include "NewtCommon.h"
 
+static const char * const ClazzNameRuntimeException = "java/lang/RuntimeException";
+static jclass    runtimeExceptionClz=NULL;
+
+void NewtCommon_init(JNIEnv *env) {
+    if(NULL==runtimeExceptionClz) {
+        jclass c = (*env)->FindClass(env, ClazzNameRuntimeException);
+        if(NULL==c) {
+            _FatalError(env, "NEWT X11Window: can't find %s", ClazzNameRuntimeException);
+        }
+        runtimeExceptionClz = (jclass)(*env)->NewGlobalRef(env, c);
+        (*env)->DeleteLocalRef(env, c);
+        if(NULL==runtimeExceptionClz) {
+            _FatalError(env, "NEWT X11Window: can't use %s", ClazzNameRuntimeException);
+        }
+    }
+}
+
 jchar* NewtCommon_GetNullTerminatedStringChars(JNIEnv* env, jstring str)
 {
     jchar* strChars = NULL;
@@ -11,3 +28,15 @@ jchar* NewtCommon_GetNullTerminatedStringChars(JNIEnv* env, jstring str)
     return strChars;
 }
 
+void NewtCommon_throwNewRuntimeException(JNIEnv *env, const char* msg, ...)
+{
+    char buffer[512];
+    va_list ap;
+
+    va_start(ap, msg);
+    vsnprintf(buffer, sizeof(buffer), msg, ap);
+    va_end(ap);
+
+    (*env)->ThrowNew(env, runtimeExceptionClz, buffer);
+}
+