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Diffstat (limited to 'libjava/jni/classpath/native_state.h')
| -rw-r--r-- | libjava/jni/classpath/native_state.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/libjava/jni/classpath/native_state.h b/libjava/jni/classpath/native_state.h new file mode 100644 index 0000000..25ef6b5 --- /dev/null +++ b/libjava/jni/classpath/native_state.h @@ -0,0 +1,71 @@ +/* Magical NSA API -- Associate a C ptr with an instance of an object + 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. */ + +#ifndef JCL_NATIVE_STATE +#define JCL_NATIVE_STATE + +#include <jni.h> + +struct state_table +{ + jint size; /* number of slots, should be prime */ + jfieldID hash; /* field containing System.identityHashCode(this) */ + jclass clazz; /* lock aquired for reading/writing nodes */ + struct state_node **head; +}; + +struct state_node +{ + jint key; + void *c_state; + struct state_node *next; +}; + +struct state_table * init_state_table_with_size (JNIEnv *, jclass, jint); +struct state_table * init_state_table (JNIEnv *, jclass); + +/* lowlevel api */ +void set_state_oid (JNIEnv *, jobject, struct state_table *, jint, void *); +void * get_state_oid (JNIEnv *, jobject, struct state_table *, jint); +void * remove_state_oid (JNIEnv *, jobject, struct state_table *, jint); + +/* highlevel api */ +int set_state (JNIEnv *, jobject, struct state_table *, void *); +void * get_state (JNIEnv *, jobject, struct state_table *); +void * remove_state_slot (JNIEnv *, jobject, struct state_table *); + +#endif |