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126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
/* JNILINK 1.1: JNI version.
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Copyright (C) 1998 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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#include <stdlib.h>
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#include <string.h>
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#include <jcl.h>
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#include "jnilink.h"
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#define GETCLASS(c) *(jclass*)(c)
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JNIEXPORT jclass JNICALL
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LINK_RelinkClass (JNIEnv * env, linkedClass * c, const char *name)
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{
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jclass found;
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LINK_UnlinkClass (env, *c);
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found = (*env)->FindClass (env, name);
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if (found == NULL)
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return NULL;
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*c = JCL_malloc (env, sizeof (jclass));
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if (*c == NULL)
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return NULL;
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GETCLASS (*c) = (*env)->NewGlobalRef (env, found);
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return GETCLASS (*c);
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}
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JNIEXPORT jclass JNICALL
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LINK_RelinkKnownClass (JNIEnv * env, linkedClass * c, jclass newClass)
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{
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LINK_UnlinkClass (env, *c);
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*c = JCL_malloc (env, sizeof (jclass));
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if (*c == NULL)
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return NULL;
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GETCLASS (*c) = (*env)->NewGlobalRef (env, newClass);
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return newClass;
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}
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JNIEXPORT jmethodID JNICALL
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LINK_RelinkMethod (JNIEnv * env, jmethodID * m, linkedClass c,
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const char *name, const char *sig)
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{
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*m = (*env)->GetMethodID (env, GETCLASS (c), name, sig);
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return *m;
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}
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JNIEXPORT jmethodID JNICALL
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LINK_RelinkStaticMethod (JNIEnv * env, jmethodID * m, linkedClass c,
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const char *name, const char *sig)
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{
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*m = (*env)->GetStaticMethodID (env, GETCLASS (c), name, sig);
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return *m;
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}
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JNIEXPORT jfieldID JNICALL
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LINK_RelinkField (JNIEnv * env, jfieldID * f, linkedClass c,
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const char *name, const char *sig)
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{
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*f = (*env)->GetFieldID (env, GETCLASS (c), name, sig);
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return *f;
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}
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JNIEXPORT jfieldID JNICALL
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LINK_RelinkStaticField (JNIEnv * env, jfieldID * f, linkedClass c,
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const char *name, const char *sig)
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{
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*f = (*env)->GetStaticFieldID (env, GETCLASS (c), name, sig);
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return *f;
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}
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/* These are for when the class referencing the symbols is unloaded; it
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destroys any object references
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* the linker might have kept around.
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*/
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JNIEXPORT void JNICALL
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LINK_UnlinkClass (JNIEnv * env, linkedClass * c)
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{
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if (*c != NULL)
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{
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if (GETCLASS (*c) != NULL)
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(*env)->DeleteGlobalRef (env, GETCLASS (*c));
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JCL_free (env, *c);
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*c = NULL;
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}
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}
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