src/threads/posix/thread-posix.h

   1 /* src/threads/posix/thread-posix.h - POSIX thread functions
   2
   3    Copyright (C) 1996-2005, 2006, 2007, 2008
   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 #ifndef _THREAD_POSIX_H
  27 #define _THREAD_POSIX_H
  28
  29 /* forward typedefs ***********************************************************/
  30
  31 typedef struct threadobject threadobject;
  32
  33
  34 #include "config.h"
  35
  36 #include <pthread.h>
  37 #include <ucontext.h>
  38
  39 #include "vm/types.h"
  40
  41 #include "mm/memory.h"
  42
  43 #include "native/localref.h"
  44
  45 #include "threads/mutex.h"
  46
  47 #include "threads/posix/lock.h"
  48
  49 #include "vm/global.h"
  50 #include "vm/vm.h"
  51
  52 #if defined(ENABLE_GC_CACAO)
  53 # include "vm/jit/replace.h"
  54 #endif
  55
  56 #include "vm/jit/stacktrace.h"
  57
  58 #if defined(ENABLE_INTRP)
  59 #include "vm/jit/intrp/intrp.h"
  60 #endif
  61
  62 #if defined(__DARWIN__)
  63 # include <mach/mach.h>
  64
  65 typedef struct {
  66         mutex_t mutex;
  67         pthread_cond_t cond;
  68         int value;
  69 } sem_t;
  70
  71 #else
  72 # include <semaphore.h>
  73 #endif
  74
  75
  76 /* current threadobject *******************************************************/
  77
  78 #if defined(HAVE___THREAD)
  79
  80 #define THREADOBJECT      thread_current
  81
  82 extern __thread threadobject *thread_current;
  83
  84 #else /* defined(HAVE___THREAD) */
  85
  86 #define THREADOBJECT \
  87         ((threadobject *) pthread_getspecific(thread_current_key))
  88
  89 extern pthread_key_t thread_current_key;
  90
  91 #endif /* defined(HAVE___THREAD) */
  92
  93
  94 /* threadobject ****************************************************************
  95
  96    Struct holding thread local variables.
  97
  98 *******************************************************************************/
  99
 100 #define THREAD_FLAG_JAVA        0x01    /* a normal Java thread               */
 101 #define THREAD_FLAG_INTERNAL    0x02    /* CACAO internal thread              */
 102 #define THREAD_FLAG_DAEMON      0x04    /* daemon thread                      */
 103 #define THREAD_FLAG_IN_NATIVE   0x08    /* currently executing native code    */
 104
 105 #define SUSPEND_REASON_JNI       1      /* suspended from JNI                 */
 106 #define SUSPEND_REASON_STOPWORLD 2      /* suspended from stop-thw-world      */
 107
 108
 109 struct threadobject {
 110         java_object_t        *object;       /* link to java.lang.Thread object    */
 111
 112         ptrint                thinlock;     /* pre-computed thin lock value       */
 113
 114         s4                    index;        /* thread index, starting with 1      */
 115         u4                    flags;        /* flag field                         */
 116         u4                    state;        /* state field                        */
 117
 118         pthread_t             tid;          /* pthread id                         */
 119
 120 #if defined(__DARWIN__)
 121         mach_port_t           mach_thread;       /* Darwin thread id              */
 122 #endif
 123
 124         /* for the sable tasuki lock extension */
 125         bool                  flc_bit;
 126         struct threadobject  *flc_list;     /* FLC list head for this thread      */
 127         struct threadobject  *flc_next;     /* next pointer for FLC list          */
 128         java_handle_t        *flc_object;
 129         mutex_t               flc_lock;     /* controlling access to these fields */
 130         pthread_cond_t        flc_cond;
 131
 132         /* these are used for the wait/notify implementation                      */
 133         mutex_t               waitmutex;
 134         pthread_cond_t        waitcond;
 135
 136         mutex_t               suspendmutex; /* lock before suspending this thread */
 137         pthread_cond_t        suspendcond;  /* notify to resume this thread       */
 138
 139         bool                  interrupted;
 140         bool                  signaled;
 141
 142         bool                  suspended;    /* is this thread suspended?          */
 143         s4                    suspend_reason; /* reason for suspending            */
 144
 145         u1                   *pc;           /* current PC (used for profiling)    */
 146
 147         java_object_t        *_exceptionptr;     /* current exception             */
 148         stackframeinfo_t     *_stackframeinfo;   /* current native stackframeinfo */
 149         localref_table       *_localref_table;   /* JNI local references          */
 150
 151 #if defined(ENABLE_INTRP)
 152         Cell                 *_global_sp;        /* stack pointer for interpreter */
 153 #endif
 154
 155 #if defined(ENABLE_GC_CACAO)
 156         bool                  gc_critical;  /* indicates a critical section       */
 157
 158         sourcestate_t        *ss;
 159         executionstate_t     *es;
 160 #endif
 161
 162         dumpinfo_t            dumpinfo;     /* dump memory info structure         */
 163
 164 #if defined(ENABLE_DEBUG_FILTER)
 165         u2                    filterverbosecallctr[2]; /* counters for verbose call filter */
 166 #endif
 167
 168 #if !defined(NDEBUG)
 169         s4                    tracejavacallindent;
 170         u4                    tracejavacallcount;
 171 #endif
 172
 173         listnode_t            linkage;      /* threads-list                       */
 174         listnode_t            linkage_free; /* free-list                          */
 175 };
 176
 177
 178 /* native-world flags *********************************************************/
 179
 180 #if defined(ENABLE_GC_CACAO)
 181 # define THREAD_NATIVEWORLD_ENTER THREADOBJECT->flags |=  THREAD_FLAG_IN_NATIVE
 182 # define THREAD_NATIVEWORLD_EXIT  THREADOBJECT->flags &= ~THREAD_FLAG_IN_NATIVE
 183 #else
 184 # define THREAD_NATIVEWORLD_ENTER /*nop*/
 185 # define THREAD_NATIVEWORLD_EXIT  /*nop*/
 186 #endif
 187
 188
 189 /* counter for verbose call filter ********************************************/
 190
 191 #if defined(ENABLE_DEBUG_FILTER)
 192 #       define FILTERVERBOSECALLCTR (THREADOBJECT->filterverbosecallctr)
 193 #endif
 194
 195 /* state for trace java call **************************************************/
 196
 197 #if !defined(NDEBUG)
 198 #       define TRACEJAVACALLINDENT (THREADOBJECT->tracejavacallindent)
 199 #       define TRACEJAVACALLCOUNT (THREADOBJECT->tracejavacallcount)
 200 #endif
 201
 202
 203 /* inline functions ***********************************************************/
 204
 205 /* thread_get_current **********************************************************
 206
 207    Return the threadobject of the current thread.
 208
 209    RETURN:
 210        the current threadobject *
 211
 212 *******************************************************************************/
 213
 214 inline static threadobject *thread_get_current(void)
 215 {
 216         threadobject *t;
 217
 218 #if defined(HAVE___THREAD)
 219         t = thread_current;
 220 #else
 221         t = (threadobject *) pthread_getspecific(thread_current_key);
 222 #endif
 223
 224         return t;
 225 }
 226
 227
 228 /* thread_set_current **********************************************************
 229
 230    Set the current thread object.
 231
 232    IN:
 233       t ... the thread object to set
 234
 235 *******************************************************************************/
 236
 237 inline static void thread_set_current(threadobject *t)
 238 {
 239 #if defined(HAVE___THREAD)
 240         thread_current = t;
 241 #else
 242         int result;
 243
 244         result = pthread_setspecific(thread_current_key, t);
 245
 246         if (result != 0)
 247                 vm_abort_errnum(result, "thread_set_current: pthread_setspecific failed");
 248 #endif
 249 }
 250
 251
 252 inline static stackframeinfo_t *threads_get_current_stackframeinfo(void)
 253 {
 254         return THREADOBJECT->_stackframeinfo;
 255 }
 256
 257 inline static void threads_set_current_stackframeinfo(stackframeinfo_t *sfi)
 258 {
 259         THREADOBJECT->_stackframeinfo = sfi;
 260 }
 261
 262
 263 /* functions ******************************************************************/
 264
 265 void threads_sem_init(sem_t *sem, bool shared, int value);
 266 void threads_sem_wait(sem_t *sem);
 267 void threads_sem_post(sem_t *sem);
 268
 269 void threads_start_thread(threadobject *thread, functionptr function);
 270
 271 void threads_set_thread_priority(pthread_t tid, int priority);
 272
 273 #if defined(ENABLE_GC_CACAO)
 274 bool threads_suspend_thread(threadobject *thread, s4 reason);
 275 void threads_suspend_ack(u1* pc, u1* sp);
 276 bool threads_resume_thread(threadobject *thread);
 277 #endif
 278
 279 void threads_join_all_threads(void);
 280
 281 void threads_sleep(int64_t millis, int32_t nanos);
 282
 283 void threads_wait_with_timeout_relative(threadobject *t, s8 millis, s4 nanos);
 284
 285 void threads_thread_interrupt(threadobject *thread);
 286
 287 #endif /* _THREAD_POSIX_H */
 288
 289
 290 /*
 291  * These are local overrides for various environment variables in Emacs.
 292  * Please do not remove this and leave it at the end of the file, where
 293  * Emacs will automagically detect them.
 294  * ---------------------------------------------------------------------
 295  * Local variables:
 296  * mode: c
 297  * indent-tabs-mode: t
 298  * c-basic-offset: 4
 299  * tab-width: 4
 300  * End:
 301  * vim:noexpandtab:sw=4:ts=4:
 302  */