1 /* src/native/vm/sun_misc_Unsafe.c - sun/misc/Unsafe
3 Copyright (C) 2006, 2007 R. Grafl, A. Krall, C. Kruegel, C. Oates,
4 R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
5 C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
6 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
25 $Id: java_lang_VMObject.c 5153 2006-07-18 08:19:24Z twisti $
34 #include "native/jni.h"
35 #include "native/native.h"
37 #include "native/include/java_lang_Object.h"
38 #include "native/include/java_lang_reflect_Field.h"
39 #include "native/include/java_lang_Thread.h" /* required by s.m.U */
41 #include "native/include/sun_misc_Unsafe.h"
43 #include "vmcore/utf8.h"
46 /* native methods implemented by this file ************************************/
48 static JNINativeMethod methods[] = {
49 { "objectFieldOffset", "(Ljava/lang/reflect/Field;)J", (void *) (intptr_t) &Java_sun_misc_Unsafe_objectFieldOffset },
50 { "compareAndSwapInt", "(Ljava/lang/Object;JII)Z", (void *) (intptr_t) &Java_sun_misc_Unsafe_compareAndSwapInt },
52 { "compareAndSwapLong", "(Ljava/lang/Object;JJJ)Z", (void *) (intptr_t) &Java_sun_misc_Unsafe_compareAndSwapLong },
53 { "compareAndSwapObject", "(Ljava/lang/Object;JLjava/lang/Object;Ljava/lang/Object;)Z", (void *) (intptr_t) &Java_sun_misc_Unsafe_compareAndSwapObject },
54 { "putOrderedInt", "(Ljava/lang/Object;JI)V", (void *) (intptr_t) &Java_sun_misc_Unsafe_putOrderedInt },
55 { "putOrderedLong", "(Ljava/lang/Object;JJ)V", (void *) (intptr_t) &Java_sun_misc_Unsafe_putOrderedLong },
56 { "putOrderedObject", "(Ljava/lang/Object;JLjava/lang/Object;)V", (void *) (intptr_t) &Java_sun_misc_Unsafe_putOrderedObject },
57 { "putIntVolatile", "(Ljava/lang/Object;JI)V", (void *) (intptr_t) &Java_sun_misc_Unsafe_putIntVolatile },
58 { "getIntVolatile", "(Ljava/lang/Object;J)I", (void *) (intptr_t) &Java_sun_misc_Unsafe_getIntVolatile },
59 { "putLongVolatile", "(Ljava/lang/Object;JJ)V", (void *) (intptr_t) &Java_sun_misc_Unsafe_putLongVolatile },
60 { "putLong", "(Ljava/lang/Object;JJ)V", (void *) (intptr_t) &Java_sun_misc_Unsafe_putLong },
61 { "getLongVolatile", "(Ljava/lang/Object;J)J", (void *) (intptr_t) &Java_sun_misc_Unsafe_getLongVolatile },
62 { "getLong", "(Ljava/lang/Object;J)J", (void *) (intptr_t) &Java_sun_misc_Unsafe_getLong },
63 { "putObjectVolatile", "(Ljava/lang/Object;JLjava/lang/Object;)V", (void *) (intptr_t) &Java_sun_misc_Unsafe_putObjectVolatile },
64 { "putObject", "(Ljava/lang/Object;JLjava/lang/Object;)V", (void *) (intptr_t) &Java_sun_misc_Unsafe_putObject },
65 { "getObjectVolatile", "(Ljava/lang/Object;J)Ljava/lang/Object;", (void *) (intptr_t) &Java_sun_misc_Unsafe_getObjectVolatile },
66 { "arrayBaseOffset", "(Ljava/lang/Class;)I", (void *) (intptr_t) &Java_sun_misc_Unsafe_arrayBaseOffset },
67 { "arrayIndexScale", "(Ljava/lang/Class;)I", (void *) (intptr_t) &Java_sun_misc_Unsafe_arrayIndexScale },
68 { "unpark", "(Ljava/lang/Thread;)V", (void *) (intptr_t) &Java_sun_misc_Unsafe_unpark },
69 { "park", "(ZJ)V", (void *) (intptr_t) &Java_sun_misc_Unsafe_park },
74 /* _Jv_sun_misc_Unsafe_init ****************************************************
76 Register native functions.
78 *******************************************************************************/
80 void _Jv_sun_misc_Unsafe_init(void)
84 u = utf_new_char("sun/misc/Unsafe");
86 native_method_register(u, methods, NATIVE_METHODS_COUNT);
91 * Class: sun/misc/Unsafe
92 * Method: objectFieldOffset
93 * Signature: (Ljava/lang/reflect/Field;)J
95 JNIEXPORT int64_t JNICALL Java_sun_misc_Unsafe_objectFieldOffset(JNIEnv *env, sun_misc_Unsafe* this, java_lang_reflect_Field* field)
100 c = (classinfo *) field->declaringClass;
101 f = &c->fields[field->slot];
103 return (int64_t) f->offset;
108 * Class: sun/misc/Unsafe
109 * Method: compareAndSwapInt
110 * Signature: (Ljava/lang/Object;JII)Z
112 JNIEXPORT int32_t JNICALL Java_sun_misc_Unsafe_compareAndSwapInt(JNIEnv *env, sun_misc_Unsafe* this, java_lang_Object* obj, int64_t offset, int32_t expect, int32_t update)
117 p = (int32_t *) (((u1 *) obj) + offset);
119 /* XXX this should be atomic */
123 if (value == expect) {
135 * Class: sun/misc/Unsafe
136 * Method: compareAndSwapLong
137 * Signature: (Ljava/lang/Object;JJJ)Z
139 JNIEXPORT int32_t JNICALL Java_sun_misc_Unsafe_compareAndSwapLong(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2, int64_t par3, int64_t par4)
145 * Class: sun/misc/Unsafe
146 * Method: compareAndSwapObject
147 * Signature: (Ljava/lang/Object;JLjava/lang/Object;Ljava/lang/Object;)Z
149 JNIEXPORT int32_t JNICALL Java_sun_misc_Unsafe_compareAndSwapObject(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2, struct java_lang_Object* par3, struct java_lang_Object* par4)
155 * Class: sun/misc/Unsafe
156 * Method: putOrderedInt
157 * Signature: (Ljava/lang/Object;JI)V
159 JNIEXPORT void JNICALL Java_sun_misc_Unsafe_putOrderedInt(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2, int32_t par3)
165 * Class: sun/misc/Unsafe
166 * Method: putOrderedLong
167 * Signature: (Ljava/lang/Object;JJ)V
169 JNIEXPORT void JNICALL Java_sun_misc_Unsafe_putOrderedLong(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2, int64_t par3)
175 * Class: sun/misc/Unsafe
176 * Method: putOrderedObject
177 * Signature: (Ljava/lang/Object;JLjava/lang/Object;)V
179 JNIEXPORT void JNICALL Java_sun_misc_Unsafe_putOrderedObject(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2, struct java_lang_Object* par3)
185 * Class: sun/misc/Unsafe
186 * Method: putIntVolatile
187 * Signature: (Ljava/lang/Object;JI)V
189 JNIEXPORT void JNICALL Java_sun_misc_Unsafe_putIntVolatile(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2, int32_t par3)
195 * Class: sun/misc/Unsafe
196 * Method: getIntVolatile
197 * Signature: (Ljava/lang/Object;J)I
199 JNIEXPORT int32_t JNICALL Java_sun_misc_Unsafe_getIntVolatile(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2)
205 * Class: sun/misc/Unsafe
206 * Method: putLongVolatile
207 * Signature: (Ljava/lang/Object;JJ)V
209 JNIEXPORT void JNICALL Java_sun_misc_Unsafe_putLongVolatile(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2, int64_t par3)
215 * Class: sun/misc/Unsafe
217 * Signature: (Ljava/lang/Object;JJ)V
219 JNIEXPORT void JNICALL Java_sun_misc_Unsafe_putLong(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2, int64_t par3)
225 * Class: sun/misc/Unsafe
226 * Method: getLongVolatile
227 * Signature: (Ljava/lang/Object;J)J
229 JNIEXPORT int64_t JNICALL Java_sun_misc_Unsafe_getLongVolatile(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2)
235 * Class: sun/misc/Unsafe
237 * Signature: (Ljava/lang/Object;J)J
239 JNIEXPORT int64_t JNICALL Java_sun_misc_Unsafe_getLong(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2)
245 * Class: sun/misc/Unsafe
246 * Method: putObjectVolatile
247 * Signature: (Ljava/lang/Object;JLjava/lang/Object;)V
249 JNIEXPORT void JNICALL Java_sun_misc_Unsafe_putObjectVolatile(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2, struct java_lang_Object* par3)
255 * Class: sun/misc/Unsafe
257 * Signature: (Ljava/lang/Object;JLjava/lang/Object;)V
259 JNIEXPORT void JNICALL Java_sun_misc_Unsafe_putObject(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2, struct java_lang_Object* par3)
265 * Class: sun/misc/Unsafe
266 * Method: getObjectVolatile
267 * Signature: (Ljava/lang/Object;J)Ljava/lang/Object;
269 JNIEXPORT struct java_lang_Object* JNICALL Java_sun_misc_Unsafe_getObjectVolatile(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Object* par1, int64_t par2)
275 * Class: sun/misc/Unsafe
276 * Method: arrayBaseOffset
277 * Signature: (Ljava/lang/Class;)I
279 JNIEXPORT int32_t JNICALL Java_sun_misc_Unsafe_arrayBaseOffset(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Class* par1)
285 * Class: sun/misc/Unsafe
286 * Method: arrayIndexScale
287 * Signature: (Ljava/lang/Class;)I
289 JNIEXPORT int32_t JNICALL Java_sun_misc_Unsafe_arrayIndexScale(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Class* par1)
295 * Class: sun/misc/Unsafe
297 * Signature: (Ljava/lang/Thread;)V
299 JNIEXPORT void JNICALL Java_sun_misc_Unsafe_unpark(JNIEnv *env, struct sun_misc_Unsafe* this, struct java_lang_Thread* par1)
305 * Class: sun/misc/Unsafe
309 JNIEXPORT void JNICALL Java_sun_misc_Unsafe_park(JNIEnv *env, struct sun_misc_Unsafe* this, int32_t par1, int64_t par2)
316 * These are local overrides for various environment variables in Emacs.
317 * Please do not remove this and leave it at the end of the file, where
318 * Emacs will automagically detect them.
319 * ---------------------------------------------------------------------
322 * indent-tabs-mode: t