1 /* src/native/llni.h - low level native interfarce (LLNI) macros
3 Copyright (C) 2007 R. Grafl, A. Krall, C. Kruegel,
4 C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
5 E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
6 J. Wenninger, Institut f. Computersprachen - TU Wien
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
34 /* LLNI macros *****************************************************************
36 The following macros should be used whenever a Java Object is
37 accessed in native code without the use of an JNI function.
39 LLNI_field_set_val, LLNI_field_get_val:
40 Deal with primitive values like integer and float values. Do
41 not use these macros to access pointers or references!
43 LLNI_field_set_ref, LLNI_field_get_ref:
44 Deal with references to other objects.
46 LLNI_field_set_cls, LLNI_field_get_cls:
47 Deal with references to Java Classes which are internally
48 represented by classinfo or java_lang_Class.
50 *******************************************************************************/
52 #define LLNI_field_set_val(obj, field, value) \
53 LLNI_field_direct(obj, field) = (value)
55 #define LLNI_field_set_ref(obj, field, reference) \
56 LLNI_field_set_val(obj, field, reference)
58 #define LLNI_field_set_cls(obj, field, value) \
59 LLNI_field_direct(obj, field) = (java_lang_Class *) (value)
61 #define LLNI_field_get_val(obj, field, variable) \
62 (variable) = LLNI_field_direct(obj, field)
64 #define LLNI_field_get_ref(obj, field, variable) \
65 LLNI_field_get_val(obj, field, variable)
67 #define LLNI_field_get_cls(obj, field, variable) \
68 (variable) = (classinfo *) LLNI_field_direct(obj, field)
70 #define LLNI_class_get(obj, variable) \
71 (variable) = LLNI_field_direct(obj, header.vftbl->class)
74 /* LLNI classinfo wrapping / unwrapping macros *********************************
76 The following macros are used to wrap or unwrap a classinfo from
77 or into a handle (typically java_lang_Class).
79 *******************************************************************************/
81 #define LLNI_classinfo_wrap(classinfo) \
82 ((java_lang_Class *) (classinfo))
84 #define LLNI_classinfo_unwrap(clazz) \
85 ((classinfo *) (clazz))
88 /* XXX the direct macros have to be used inside a critical section!!! */
90 #define LLNI_field_direct(obj, field) ((obj)->field)
92 #define LLNI_vftbl_direct(obj) (((java_handle_t *) (obj))->vftbl)
94 #define LLNI_array_direct(arr, index) ((arr)->data[(index)])
96 #define LLNI_array_data(arr) ((arr)->data)
98 #define LLNI_array_size(arr) ((java_array_t *) (arr))->size
100 /* XXX document me */
102 #define LLNI_objectarray_element_set(arr, index, reference) \
103 LLNI_array_direct(arr, index) = reference
105 #define LLNI_objectarray_element_get(arr, index, variable) \
106 (variable) = (java_handle_t *) LLNI_array_direct(arr, index)
114 * These are local overrides for various environment variables in Emacs.
115 * Please do not remove this and leave it at the end of the file, where
116 * Emacs will automagically detect them.
117 * ---------------------------------------------------------------------
120 * indent-tabs-mode: t