1 files changed, 117 insertions, 0 deletions
diff --git a/libjava/jni/classpath/jnilink.c b/libjava/jni/classpath/jnilink.c
new file mode 100644
index 0000000..0c244f2
--- /dev/null
+++ b/libjava/jni/classpath/jnilink.c
@@ -0,0 +1,117 @@
+/* JNILINK 1.1: JNI version.
+   Copyright (C) 1998 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+ 
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+#include "jnilink.h"
+#include <string.h>
+#include <jcl.h>
+
+#include <malloc.h>
+
+#define GETCLASS(c) *(jclass*)(c)
+
+JNIEXPORT jclass JNICALL
+LINK_RelinkClass     (JNIEnv * env, linkedClass * c, char * name) {
+	jclass found;
+	LINK_UnlinkClass(env,*c);
+
+	found = (*env)->FindClass(env,name);
+	if(found == NULL)
+		return NULL;
+
+	*c = JCL_malloc(env,sizeof(jclass));
+	if(*c == NULL)
+		return NULL;
+
+	GETCLASS(*c) = (*env)->NewGlobalRef(env,found);
+	return GETCLASS(*c);
+}
+
+JNIEXPORT jclass JNICALL
+LINK_RelinkKnownClass(JNIEnv * env, linkedClass * c, jclass newClass) {
+	LINK_UnlinkClass(env,*c);
+
+	*c = JCL_malloc(env,sizeof(jclass));
+	if(*c == NULL)
+		return NULL;
+
+	GETCLASS(*c) = (*env)->NewGlobalRef(env,newClass);
+	return newClass;
+}
+
+JNIEXPORT jmethodID JNICALL
+LINK_RelinkMethod      (JNIEnv * env, jmethodID * m, linkedClass c,
+                        char * name, char * sig) {
+	*m = (*env)->GetMethodID(env,GETCLASS(c),name,sig);
+	return *m;
+}
+
+JNIEXPORT jmethodID JNICALL
+LINK_RelinkStaticMethod(JNIEnv * env, jmethodID * m, linkedClass c,
+                        char * name, char * sig) {
+	*m = (*env)->GetStaticMethodID(env,GETCLASS(c),name,sig);
+	return *m;
+}
+
+JNIEXPORT jfieldID JNICALL
+LINK_RelinkField       (JNIEnv * env, jfieldID * f, linkedClass c,
+                        char * name, char * sig) {
+	*f = (*env)->GetFieldID(env,GETCLASS(c),name,sig);
+	return *f;
+}
+
+JNIEXPORT jfieldID JNICALL
+LINK_RelinkStaticField (JNIEnv * env, jfieldID * f, linkedClass c,
+                        char * name, char * sig) {
+	*f = (*env)->GetStaticFieldID(env,GETCLASS(c),name,sig);
+	return *f;
+}
+
+
+/* These are for when the class referencing the symbols is unloaded; it
+destroys any object references
+ * the linker might have kept around.
+ */
+JNIEXPORT void JNICALL LINK_UnlinkClass       (JNIEnv * env, linkedClass * c) {
+	if(*c != NULL) {
+		if(GETCLASS(*c) != NULL)
+			(*env)->DeleteGlobalRef(env,GETCLASS(*c));
+		JCL_free(env,*c);
+		*c = NULL;
+	}
+}
+