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 #if defined(ENABLE_TLH)
  44 #include "mm/tlh.h"
  45 #endif
  46
  47 #include "native/localref.h"
  48
  49 #include "threads/condition.hpp"
  50 #include "threads/mutex.hpp"
  51
  52 #include "threads/posix/lock.h"
  53
  54 #include "vm/global.h"
  55 #include "vm/vm.h"
  56
  57 #if defined(ENABLE_GC_CACAO)
  58 # include "vm/jit/replace.h"
  59 #endif
  60
  61 #include "vm/jit/stacktrace.h"
  62
  63 #if defined(ENABLE_INTRP)
  64 #include "vm/jit/intrp/intrp.h"
  65 #endif
  66
  67 #if defined(__DARWIN__)
  68 # include <mach/mach.h>
  69
  70 typedef struct {
  71         mutex_t mutex;
  72         pthread_cond_t cond;
  73         int value;
  74 } sem_t;
  75
  76 #else
  77 # include <semaphore.h>
  78 #endif
  79
  80
  81
  82 /* current threadobject *******************************************************/
  83
  84 #if defined(HAVE___THREAD)
  85
  86 #define THREADOBJECT      thread_current
  87
  88 extern __thread threadobject *thread_current;
  89
  90 #else /* defined(HAVE___THREAD) */
  91
  92 #define THREADOBJECT \
  93         ((threadobject *) pthread_getspecific(thread_current_key))
  94
  95 extern pthread_key_t thread_current_key;
  96
  97 #endif /* defined(HAVE___THREAD) */
  98
  99
 100 /* threadobject ****************************************************************
 101
 102    Struct holding thread local variables.
 103
 104 *******************************************************************************/
 105
 106 #define THREAD_FLAG_JAVA        0x01    /* a normal Java thread               */
 107 #define THREAD_FLAG_INTERNAL    0x02    /* CACAO internal thread              */
 108 #define THREAD_FLAG_DAEMON      0x04    /* daemon thread                      */
 109 #define THREAD_FLAG_IN_NATIVE   0x08    /* currently executing native code    */
 110
 111 #define SUSPEND_REASON_JNI       1      /* suspended from JNI                 */
 112 #define SUSPEND_REASON_STOPWORLD 2      /* suspended from stop-thw-world      */
 113
 114
 115 struct threadobject {
 116         java_object_t        *object;       /* link to java.lang.Thread object    */
 117
 118         ptrint                thinlock;     /* pre-computed thin lock value       */
 119
 120         s4                    index;        /* thread index, starting with 1      */
 121         u4                    flags;        /* flag field                         */
 122         u4                    state;        /* state field                        */
 123
 124         pthread_t             tid;          /* pthread id                         */
 125
 126 #if defined(__DARWIN__)
 127         mach_port_t           mach_thread;       /* Darwin thread id              */
 128 #endif
 129
 130         /* for the sable tasuki lock extension */
 131         bool                  flc_bit;
 132         struct threadobject  *flc_list;     /* FLC list head for this thread      */
 133         struct threadobject  *flc_next;     /* next pointer for FLC list          */
 134         java_handle_t        *flc_object;
 135         Mutex*                flc_lock;     /* controlling access to these fields */
 136         Condition*            flc_cond;
 137
 138         /* these are used for the wait/notify implementation                      */
 139         Mutex*                waitmutex;
 140         Condition*            waitcond;
 141
 142         Mutex*                suspendmutex; /* lock before suspending this thread */
 143         Condition*            suspendcond;  /* notify to resume this thread       */
 144
 145         bool                  interrupted;
 146         bool                  signaled;
 147
 148         bool                  suspended;    /* is this thread suspended?          */
 149         s4                    suspend_reason; /* reason for suspending            */
 150
 151         u1                   *pc;           /* current PC (used for profiling)    */
 152
 153         java_object_t        *_exceptionptr;     /* current exception             */
 154         stackframeinfo_t     *_stackframeinfo;   /* current native stackframeinfo */
 155         localref_table       *_localref_table;   /* JNI local references          */
 156
 157 #if defined(ENABLE_INTRP)
 158         Cell                 *_global_sp;        /* stack pointer for interpreter */
 159 #endif
 160
 161 #if defined(ENABLE_GC_CACAO)
 162         bool                  gc_critical;  /* indicates a critical section       */
 163
 164         sourcestate_t        *ss;
 165         executionstate_t     *es;
 166 #endif
 167
 168         dumpinfo_t            dumpinfo;     /* dump memory info structure         */
 169
 170 #if defined(ENABLE_DEBUG_FILTER)
 171         u2                    filterverbosecallctr[2]; /* counters for verbose call filter */
 172 #endif
 173
 174 #if !defined(NDEBUG)
 175         s4                    tracejavacallindent;
 176         u4                    tracejavacallcount;
 177 #endif
 178
 179 #if defined(ENABLE_TLH)
 180         tlh_t                 tlh;
 181 #endif
 182
 183 #if defined(ENABLE_ESCAPE_REASON)
 184         void *escape_reasons;
 185 #endif
 186
 187         listnode_t            linkage;      /* threads-list                       */
 188         listnode_t            linkage_free; /* free-list                          */
 189 };
 190
 191
 192 /* native-world flags *********************************************************/
 193
 194 #if defined(ENABLE_GC_CACAO)
 195 # define THREAD_NATIVEWORLD_ENTER THREADOBJECT->flags |=  THREAD_FLAG_IN_NATIVE
 196 # define THREAD_NATIVEWORLD_EXIT  THREADOBJECT->flags &= ~THREAD_FLAG_IN_NATIVE
 197 #else
 198 # define THREAD_NATIVEWORLD_ENTER /*nop*/
 199 # define THREAD_NATIVEWORLD_EXIT  /*nop*/
 200 #endif
 201
 202
 203 /* counter for verbose call filter ********************************************/
 204
 205 #if defined(ENABLE_DEBUG_FILTER)
 206 #       define FILTERVERBOSECALLCTR (THREADOBJECT->filterverbosecallctr)
 207 #endif
 208
 209 /* state for trace java call **************************************************/
 210
 211 #if !defined(NDEBUG)
 212 #       define TRACEJAVACALLINDENT (THREADOBJECT->tracejavacallindent)
 213 #       define TRACEJAVACALLCOUNT (THREADOBJECT->tracejavacallcount)
 214 #endif
 215
 216
 217 /* inline functions ***********************************************************/
 218
 219 /* thread_get_current **********************************************************
 220
 221    Return the threadobject of the current thread.
 222
 223    RETURN:
 224        the current threadobject *
 225
 226 *******************************************************************************/
 227
 228 inline static threadobject *thread_get_current(void)
 229 {
 230         threadobject *t;
 231
 232 #if defined(HAVE___THREAD)
 233         t = thread_current;
 234 #else
 235         t = (threadobject *) pthread_getspecific(thread_current_key);
 236 #endif
 237
 238         return t;
 239 }
 240
 241
 242 /* thread_set_current **********************************************************
 243
 244    Set the current thread object.
 245
 246    IN:
 247       t ... the thread object to set
 248
 249 *******************************************************************************/
 250
 251 inline static void thread_set_current(threadobject *t)
 252 {
 253 #if defined(HAVE___THREAD)
 254         thread_current = t;
 255 #else
 256         int result;
 257
 258         result = pthread_setspecific(thread_current_key, t);
 259
 260         if (result != 0)
 261                 vm_abort_errnum(result, "thread_set_current: pthread_setspecific failed");
 262 #endif
 263 }
 264
 265
 266 inline static stackframeinfo_t *threads_get_current_stackframeinfo(void)
 267 {
 268         return THREADOBJECT->_stackframeinfo;
 269 }
 270
 271 inline static void threads_set_current_stackframeinfo(stackframeinfo_t *sfi)
 272 {
 273         THREADOBJECT->_stackframeinfo = sfi;
 274 }
 275
 276
 277 /* functions ******************************************************************/
 278
 279 void threads_sem_init(sem_t *sem, bool shared, int value);
 280 void threads_sem_wait(sem_t *sem);
 281 void threads_sem_post(sem_t *sem);
 282
 283 void threads_start_thread(threadobject *thread, functionptr function);
 284
 285 void threads_set_thread_priority(pthread_t tid, int priority);
 286
 287 #if defined(ENABLE_GC_CACAO)
 288 bool threads_suspend_thread(threadobject *thread, s4 reason);
 289 void threads_suspend_ack(u1* pc, u1* sp);
 290 bool threads_resume_thread(threadobject *thread);
 291 #endif
 292
 293 void threads_join_all_threads(void);
 294
 295 void threads_sleep(int64_t millis, int32_t nanos);
 296
 297 void threads_wait_with_timeout_relative(threadobject *t, s8 millis, s4 nanos);
 298
 299 void threads_thread_interrupt(threadobject *thread);
 300
 301 #if defined(ENABLE_TLH)
 302 void threads_tlh_add_frame();
 303 void threads_tlh_remove_frame();
 304 #endif
 305
 306 #endif /* _THREAD_POSIX_H */
 307
 308
 309 /*
 310  * These are local overrides for various environment variables in Emacs.
 311  * Please do not remove this and leave it at the end of the file, where
 312  * Emacs will automagically detect them.
 313  * ---------------------------------------------------------------------
 314  * Local variables:
 315  * mode: c
 316  * indent-tabs-mode: t
 317  * c-basic-offset: 4
 318  * tab-width: 4
 319  * End:
 320  * vim:noexpandtab:sw=4:ts=4:
 321  */