1 /* src/threads/thread.hpp - machine independent thread functions
3 Copyright (C) 1996-2011
4 CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
6 This file is part of CACAO.
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.
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.
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
33 // Include early to get threadobject.
34 #if defined(ENABLE_THREADS)
35 # include "threads/posix/thread-posix.hpp"
37 # include "threads/none/thread-none.h"
42 #include "native/llni.h"
44 #include "threads/mutex.hpp"
46 #include "vm/global.h"
50 /* only define the following stuff with thread enabled ************************/
52 #if defined(ENABLE_THREADS)
54 /* thread states **************************************************************/
56 #define THREAD_STATE_NEW 0
57 #define THREAD_STATE_RUNNABLE 1
58 #define THREAD_STATE_BLOCKED 2
59 #define THREAD_STATE_WAITING 3
60 #define THREAD_STATE_TIMED_WAITING 4
61 #define THREAD_STATE_TERMINATED 5
62 #define THREAD_STATE_PARKED 6
63 #define THREAD_STATE_TIMED_PARKED 7
66 /* thread priorities **********************************************************/
68 #define MIN_PRIORITY 1
69 #define NORM_PRIORITY 5
70 #define MAX_PRIORITY 10
73 /* debug **********************************************************************/
76 # define DEBUGTHREADS(message, thread) \
78 if (opt_DebugThreads) { \
79 printf("[Thread %-16s: ", message); \
80 thread_print_info(thread); \
85 # define DEBUGTHREADS(message, thread)
89 /* global variables ***********************************************************/
91 #if defined(__LINUX__)
92 /* XXX Remove for exact-GC. */
93 extern bool threads_pthreads_implementation_nptl;
101 /* inline functions ***********************************************************/
103 /* thread_get_current_object **************************************************
105 Return the Java object of the current thread.
110 *******************************************************************************/
112 inline static java_handle_t *thread_get_current_object(void)
118 o = LLNI_WRAP(t->object);
124 /* cacaothread_get_state *******************************************************
126 Returns the current state of the given thread.
129 t ... the thread to check
134 *******************************************************************************/
136 inline static int cacaothread_get_state(threadobject *t)
142 /* thread_is_attached **********************************************************
144 Returns if the given thread is attached to the VM.
147 t ... the thread to check
150 true .... the thread is attached to the VM
151 false ... the thread is not
153 *******************************************************************************/
155 inline static bool thread_is_attached(threadobject *t)
159 o = LLNI_WRAP(t->object);
165 /* thread_is_daemon ************************************************************
167 Returns if the given thread is a daemon thread.
170 t ... the thread to check
173 true .... the thread is a daemon thread
174 false ... the thread is not
176 *******************************************************************************/
178 inline static bool thread_is_daemon(threadobject *t)
180 return (t->flags & THREAD_FLAG_DAEMON) != 0;
184 /* thread_current_is_attached **************************************************
186 Returns if the current thread is attached to the VM.
189 true .... the thread is attached to the VM
190 false ... the thread is not
192 *******************************************************************************/
194 inline static bool thread_current_is_attached(void)
198 t = thread_get_current();
203 return thread_is_attached(t);
207 /* function prototypes ********************************************************/
209 void threads_preinit(void);
210 void threads_init(void);
212 void thread_free(threadobject *t);
214 bool threads_thread_start_internal(utf *name, functionptr f);
215 void threads_thread_start(java_handle_t *object);
217 bool thread_attach_current_thread(JavaVMAttachArgs *vm_aargs, bool isdaemon);
218 bool thread_attach_current_external_thread(JavaVMAttachArgs *vm_aargs, bool isdaemon);
219 bool thread_detach_current_thread(void);
221 bool thread_detach_current_external_thread(void);
223 void thread_fprint_name(threadobject *t, FILE *stream);
224 void thread_print_info(threadobject *t);
226 intptr_t threads_get_current_tid(void);
228 void thread_set_state_runnable(threadobject *t);
229 void thread_set_state_waiting(threadobject *t);
230 void thread_set_state_timed_waiting(threadobject *t);
231 void thread_set_state_parked(threadobject *t);
232 void thread_set_state_timed_parked(threadobject *t);
233 void thread_set_state_terminated(threadobject *t);
235 threadobject *thread_get_thread(java_handle_t *h);
237 bool threads_thread_is_alive(threadobject *t);
238 bool thread_is_interrupted(threadobject *t);
239 void thread_set_interrupted(threadobject *t, bool interrupted);
241 /* implementation specific functions */
243 void threads_impl_preinit(void);
244 void threads_impl_init(void);
246 #if defined(ENABLE_GC_CACAO)
247 void threads_mutex_gc_lock(void);
248 void threads_mutex_gc_unlock(void);
251 void threads_impl_thread_clear(threadobject *t);
252 void threads_impl_thread_reuse(threadobject *t);
253 void threads_impl_clear_heap_pointers(threadobject *t);
254 void threads_impl_thread_start(threadobject *thread, functionptr f);
256 void threads_yield(void);
262 #endif /* ENABLE_THREADS */
264 #endif // _THREAD_HPP
266 void thread_handle_set_priority(java_handle_t *th, int);
267 bool thread_handle_is_interrupted(java_handle_t *th);
268 void thread_handle_interrupt(java_handle_t *th);
269 int thread_handle_get_state(java_handle_t *th);
271 #if defined(WITH_JAVA_RUNTIME_LIBRARY_GNU_CLASSPATH)
272 #include "thread-classpath.hpp"
273 #elif defined(WITH_JAVA_RUNTIME_LIBRARY_OPENJDK)
274 #include "thread-openjdk.hpp"
275 #elif defined(WITH_JAVA_RUNTIME_LIBRARY_CLDC1_1)
276 #include "thread-cldc11.hpp"
281 * These are local overrides for various environment variables in Emacs.
282 * Please do not remove this and leave it at the end of the file, where
283 * Emacs will automagically detect them.
284 * ---------------------------------------------------------------------
287 * indent-tabs-mode: t
291 * vim:noexpandtab:sw=4:ts=4: