1 /*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 /*
17 * instanceof, checkcast, etc.
18 */
19 #ifndef DALVIK_OO_TYPECHECK_H_
20 #define DALVIK_OO_TYPECHECK_H_
21
22 /* VM startup/shutdown */
23 bool dvmInstanceofStartup(void);
24 void dvmInstanceofShutdown(void);
25
26
27 /* used by dvmInstanceof; don't call */
28 extern "C" int dvmInstanceofNonTrivial(const ClassObject* instance,
29 const ClassObject* clazz);
30
31 /*
32 * Determine whether "instance" is an instance of "clazz".
33 *
34 * Returns 0 (false) if not, 1 (true) if so.
35 */
dvmInstanceof(const ClassObject * instance,const ClassObject * clazz)36 INLINE int dvmInstanceof(const ClassObject* instance, const ClassObject* clazz)
37 {
38 if (instance == clazz) {
39 if (CALC_CACHE_STATS)
40 gDvm.instanceofCache->trivial++;
41 return 1;
42 } else
43 return dvmInstanceofNonTrivial(instance, clazz);
44 }
45
46 /*
47 * Determine whether a class implements an interface.
48 *
49 * Returns 0 (false) if not, 1 (true) if so.
50 */
51 int dvmImplements(const ClassObject* clazz, const ClassObject* interface);
52
53 /*
54 * Determine whether "sub" is a sub-class of "clazz".
55 *
56 * Returns 0 (false) if not, 1 (true) if so.
57 */
dvmIsSubClass(const ClassObject * sub,const ClassObject * clazz)58 INLINE int dvmIsSubClass(const ClassObject* sub, const ClassObject* clazz) {
59 do {
60 /*printf("###### sub='%s' clazz='%s'\n", sub->name, clazz->name);*/
61 if (sub == clazz)
62 return 1;
63 sub = sub->super;
64 } while (sub != NULL);
65
66 return 0;
67 }
68
69 /*
70 * Determine whether or not we can store an object into an array, based
71 * on the classes of the two.
72 *
73 * Returns 0 (false) if not, 1 (true) if so.
74 */
75 extern "C" bool dvmCanPutArrayElement(const ClassObject* elemClass,
76 const ClassObject* arrayClass);
77
78 #endif // DALVIK_OO_TYPECHECK_H_
79