src/threads/thread-classpath.cpp

   1 /* src/threads/thread-classpath.cpp - thread functions specific to the GNU classpath library
   2
   3    Copyright (C) 1996-2011
   4    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
   5
   6    This file is part of CACAO.
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21    02110-1301, USA.
  22
  23 */
  24
  25
  26 #include "thread-classpath.hpp"
  27
  28 #include "vm/global.h"
  29 #include "vm/globals.hpp"
  30
  31 #include "mm/gc.hpp"
  32 #include "vm/globals.hpp"
  33 #include "vm/javaobjects.hpp"
  34 #include "vm/exceptions.hpp"
  35
  36 #include "threadlist.hpp"
  37
  38 #if defined(ENABLE_THREADS) && defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
  39
  40 classinfo *ThreadRuntimeClasspath::get_thread_class_from_object(java_handle_t *object) {
  41         return class_java_lang_VMThread;
  42 }
  43
  44 java_handle_t *ThreadRuntimeClasspath::get_vmthread_handle(const java_lang_Thread &jlt) {
  45         java_lang_VMThread jlvmt(jlt.get_vmThread());
  46         return jlvmt.get_handle();
  47 }
  48
  49 java_handle_t *ThreadRuntimeClasspath::get_thread_exception_handler(const java_lang_Thread &jlt)
  50 {
  51         return jlt.get_exceptionHandler();
  52 }
  53
  54 methodinfo *ThreadRuntimeClasspath::get_threadgroup_remove_method(classinfo *c)
  55 {
  56         return class_resolveclassmethod(c,
  57                                                                         utf_removeThread,
  58                                                                         utf_java_lang_Thread__V,
  59                                                                         class_java_lang_ThreadGroup,
  60                                                                         true);
  61 }
  62
  63 methodinfo *ThreadRuntimeClasspath::get_thread_init_method()
  64 {
  65         return class_resolveclassmethod(class_java_lang_Thread,
  66                                                                         utf_init,
  67                                                                         utf_new_char("(Ljava/lang/VMThread;Ljava/lang/String;IZ)V"),
  68                                                                         class_java_lang_Thread,
  69                                                                         true);
  70 }
  71
  72 void ThreadRuntimeClasspath::setup_thread_vmdata(const java_lang_Thread& jlt, threadobject *t)
  73 {
  74         /* Get the java.lang.VMThread object and do some sanity checks. */
  75         java_lang_VMThread jlvmt(jlt.get_vmThread());
  76
  77         assert(jlvmt.get_handle() != NULL);
  78         assert(jlvmt.get_vmdata() == NULL);
  79
  80         jlvmt.set_vmdata(t);
  81 }
  82
  83 void ThreadRuntimeClasspath::print_thread_name(const java_lang_Thread& jlt, FILE *stream)
  84 {
  85         java_handle_t* name = jlt.get_name();
  86         javastring_fprint(name, stream);
  87 }
  88
  89 void ThreadRuntimeClasspath::set_javathread_state(threadobject *t, int state)
  90 {
  91 }
  92
  93 threadobject *ThreadRuntimeClasspath::get_threadobject_from_thread(java_handle_t *h)
  94 {
  95         java_lang_VMThread jlvmt(h);
  96         return jlvmt.get_vmdata();
  97 }
  98
  99 void ThreadRuntimeClasspath::thread_create_initial_threadgroups(java_handle_t **threadgroup_system, java_handle_t **threadgroup_main)
 100 {
 101         /* Allocate and initialize the main thread group. */
 102
 103         *threadgroup_main = native_new_and_init(class_java_lang_ThreadGroup);
 104
 105         if (*threadgroup_main == NULL)
 106                 vm_abort("thread_create_initial_threadgroups: failed to allocate main threadgroup");
 107
 108         /* Use the same threadgroup for system as for main. */
 109
 110         *threadgroup_system = *threadgroup_main;
 111 }
 112
 113 bool ThreadRuntimeClasspath::invoke_thread_initializer(java_lang_Thread& jlt, threadobject *t, methodinfo *thread_method_init, java_handle_t *name, java_handle_t *group)
 114 {
 115         java_handle_t *h = builtin_new(class_java_lang_VMThread);
 116
 117         if (h == NULL)
 118                 return false;
 119
 120         // Create and initialize a java.lang.VMThread object.
 121         java_lang_VMThread jlvmt(h, jlt.get_handle(), t);
 122
 123         /* Call:
 124            java.lang.Thread.<init>(Ljava/lang/VMThread;Ljava/lang/String;IZ)V */
 125
 126         bool isdaemon = thread_is_daemon(t);
 127
 128         (void) vm_call_method(thread_method_init, jlt.get_handle(), jlvmt.get_handle(),
 129                                                   name, NORM_PRIORITY, isdaemon);
 130
 131         if (exceptions_get_exception())
 132                 return false;
 133
 134         // Set the ThreadGroup in the Java thread object.
 135         jlt.set_group(group);
 136
 137         /* Add thread to the threadgroup. */
 138
 139         classinfo* c;
 140         LLNI_class_get(group, c);
 141
 142         methodinfo* m = class_resolveclassmethod(c,
 143                                                                                          utf_addThread,
 144                                                                                          utf_java_lang_Thread__V,
 145                                                                                          class_java_lang_ThreadGroup,
 146                                                                                          true);
 147
 148         if (m == NULL)
 149                 return false;
 150
 151         (void) vm_call_method(m, group, jlt.get_handle());
 152
 153         if (exceptions_get_exception())
 154                 return false;
 155
 156         return true;
 157 }
 158
 159 void ThreadRuntimeClasspath::clear_heap_reference(java_lang_Thread& jlt)
 160 {
 161         // Nothing to do.
 162 }
 163
 164 #endif /* ENABLE_THREADS && WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH */
 165
 166
 167 /*
 168  * These are local overrides for various environment variables in Emacs.
 169  * Please do not remove this and leave it at the end of the file, where
 170  * Emacs will automagically detect them.
 171  * ---------------------------------------------------------------------
 172  * Local variables:
 173  * mode: c++
 174  * indent-tabs-mode: t
 175  * c-basic-offset: 4
 176  * tab-width: 4
 177  * End:
 178  * vim:noexpandtab:sw=4:ts=4:
 179  */