1 /* src/vm/initialize.c - static class initializer functions
3 Copyright (C) 1996-2005, 2006, 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
25 $Id: initialize.c 7246 2007-01-29 18:49:05Z twisti $
36 #if defined(ENABLE_THREADS)
37 # include "threads/native/lock.h"
39 # include "threads/none/lock.h"
42 #include "vm/global.h"
43 #include "vm/initialize.h"
44 #include "vm/builtin.h"
45 #include "vm/exceptions.h"
46 #include "vm/stringlocal.h"
49 #include "vm/jit/asmpart.h"
51 #include "vmcore/class.h"
52 #include "vmcore/loader.h"
53 #include "vmcore/options.h"
55 #if defined(ENABLE_STATISTICS)
56 # include "vmcore/statistics.h"
60 /* private functions **********************************************************/
62 static bool initialize_class_intern(classinfo *c);
65 /* initialize_class ************************************************************
67 In Java, every class can have a static initialization
68 function. This function has to be called BEFORE calling other
69 methods or accessing static variables.
71 *******************************************************************************/
73 bool initialize_class(classinfo *c)
77 if (!makeinitializations)
80 LOCK_MONITOR_ENTER(c);
82 /* maybe the class is already initalized or the current thread, which can
83 pass the monitor, is currently initalizing this class */
85 if (CLASS_IS_OR_ALMOST_INITIALIZED(c)) {
91 /* if <clinit> throw an Error before, the class was marked with an
92 error and we have to throw a NoClassDefFoundError */
94 if (c->state & CLASS_ERROR) {
95 exceptions_throw_noclassdeffounderror(c->name);
99 /* ...but return true, this is ok (mauve test) */
104 /* this initalizing run begins NOW */
106 c->state |= CLASS_INITIALIZING;
108 /* call the internal function */
110 r = initialize_class_intern(c);
112 /* if return value is not NULL everything was ok and the class is
116 c->state |= CLASS_INITIALIZED;
118 /* this initalizing run is done */
120 c->state &= ~CLASS_INITIALIZING;
122 LOCK_MONITOR_EXIT(c);
128 /* initialize_class_intern *****************************************************
130 This function MUST NOT be called directly, because of thread
131 <clinit> race conditions.
133 *******************************************************************************/
135 static bool initialize_class_intern(classinfo *c)
138 java_objectheader *xptr;
140 /* maybe the class is not already linked */
142 if (!(c->state & CLASS_LINKED))
146 #if defined(ENABLE_STATISTICS)
151 /* initialize super class */
154 if (!(c->super.cls->state & CLASS_INITIALIZED)) {
157 log_message_class_message_class("Initialize super class ",
163 if (!initialize_class(c->super.cls))
168 /* interfaces implemented need not to be initialized (VM Spec 2.17.4) */
170 m = class_findmethod(c, utf_clinit, utf_void__void);
175 log_message_class("Class has no static class initializer: ", c);
181 /* Sun's and IBM's JVM don't care about the static flag */
182 /* if (!(m->flags & ACC_STATIC)) { */
183 /* log_text("Class initializer is not static!"); */
187 log_message_class("Starting static class initializer for class: ", c);
190 /* now call the initializer */
192 (void) vm_call_method(m, NULL);
194 /* we have an exception or error */
196 xptr = exceptions_get_exception();
199 /* class is NOT initialized and is marked with error */
201 c->state |= CLASS_ERROR;
203 /* is this an exception, than wrap it */
205 if (builtin_instanceof(xptr, class_java_lang_Exception)) {
206 /* clear exception, because we are calling jit code again */
208 exceptions_clear_exception();
210 /* wrap the exception */
212 exceptions_throw_exceptionininitializererror(xptr);
220 log_message_class("Finished static class initializer for class: ", c);
228 * These are local overrides for various environment variables in Emacs.
229 * Please do not remove this and leave it at the end of the file, where
230 * Emacs will automagically detect them.
231 * ---------------------------------------------------------------------
234 * indent-tabs-mode: t