| /* 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., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 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 <stdlib.h> |
| #include <string.h> |
| #include <jcl.h> |
| |
| #include "jnilink.h" |
| |
| #define GETCLASS(c) *(jclass*)(c) |
| |
| JNIEXPORT jclass JNICALL |
| LINK_RelinkClass (JNIEnv * env, linkedClass * c, const 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, |
| const char *name, const char *sig) |
| { |
| *m = (*env)->GetMethodID (env, GETCLASS (c), name, sig); |
| return *m; |
| } |
| |
| JNIEXPORT jmethodID JNICALL |
| LINK_RelinkStaticMethod (JNIEnv * env, jmethodID * m, linkedClass c, |
| const char *name, const char *sig) |
| { |
| *m = (*env)->GetStaticMethodID (env, GETCLASS (c), name, sig); |
| return *m; |
| } |
| |
| JNIEXPORT jfieldID JNICALL |
| LINK_RelinkField (JNIEnv * env, jfieldID * f, linkedClass c, |
| const char *name, const char *sig) |
| { |
| *f = (*env)->GetFieldID (env, GETCLASS (c), name, sig); |
| return *f; |
| } |
| |
| JNIEXPORT jfieldID JNICALL |
| LINK_RelinkStaticField (JNIEnv * env, jfieldID * f, linkedClass c, |
| const char *name, const 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; |
| } |
| } |