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Annotation of OpenXM_contrib2/asir2000/gc/include/private/pthread_support.h, Revision 1.1

1.1     ! noro        1: #ifndef GC_PTHREAD_SUPPORT_H
        !             2: #define GC_PTHREAD_SUPPORT_H
        !             3:
        !             4: # include "private/gc_priv.h"
        !             5:
        !             6: # if defined(GC_PTHREADS) && !defined(GC_SOLARIS_THREADS) \
        !             7:      && !defined(GC_IRIX_THREADS) && !defined(GC_WIN32_THREADS)
        !             8:
        !             9: #if defined(GC_DARWIN_THREADS)
        !            10: # include "private/darwin_stop_world.h"
        !            11: #else
        !            12: # include "private/pthread_stop_world.h"
        !            13: #endif
        !            14:
        !            15: /* We use the allocation lock to protect thread-related data structures. */
        !            16:
        !            17: /* The set of all known threads.  We intercept thread creation and     */
        !            18: /* joins.                                                              */
        !            19: /* Protected by allocation/GC lock.                                    */
        !            20: /* Some of this should be declared volatile, but that's inconsistent   */
        !            21: /* with some library routine declarations.                             */
        !            22: typedef struct GC_Thread_Rep {
        !            23:     struct GC_Thread_Rep * next;  /* More recently allocated threads   */
        !            24:                                  /* with a given pthread id come       */
        !            25:                                  /* first.  (All but the first are     */
        !            26:                                  /* guaranteed to be dead, but we may  */
        !            27:                                  /* not yet have registered the join.) */
        !            28:     pthread_t id;
        !            29:     /* Extra bookkeeping information the stopping code uses */
        !            30:     struct thread_stop_info stop_info;
        !            31:
        !            32:     short flags;
        !            33: #      define FINISHED 1       /* Thread has exited.   */
        !            34: #      define DETACHED 2       /* Thread is intended to be detached.   */
        !            35: #      define MAIN_THREAD 4    /* True for the original thread only.   */
        !            36:     short thread_blocked;      /* Protected by GC lock.                */
        !            37:                                /* Treated as a boolean value.  If set, */
        !            38:                                /* thread will acquire GC lock before   */
        !            39:                                /* doing any pointer manipulations, and */
        !            40:                                /* has set its sp value.  Thus it does  */
        !            41:                                /* not need to be sent a signal to stop */
        !            42:                                /* it.                                  */
        !            43:     ptr_t stack_end;           /* Cold end of the stack.               */
        !            44: #   ifdef IA64
        !            45:        ptr_t backing_store_end;
        !            46:        ptr_t backing_store_ptr;
        !            47: #   endif
        !            48:     void * status;             /* The value returned from the thread.  */
        !            49:                                /* Used only to avoid premature         */
        !            50:                                /* reclamation of any data it might     */
        !            51:                                /* reference.                           */
        !            52: #   ifdef THREAD_LOCAL_ALLOC
        !            53: #      if CPP_WORDSZ == 64 && defined(ALIGN_DOUBLE)
        !            54: #          define GRANULARITY 16
        !            55: #          define NFREELISTS 49
        !            56: #      else
        !            57: #          define GRANULARITY 8
        !            58: #          define NFREELISTS 65
        !            59: #      endif
        !            60:        /* The ith free list corresponds to size i*GRANULARITY */
        !            61: #      define INDEX_FROM_BYTES(n) ((ADD_SLOP(n) + GRANULARITY - 1)/GRANULARITY)
        !            62: #      define BYTES_FROM_INDEX(i) ((i) * GRANULARITY - EXTRA_BYTES)
        !            63: #      define SMALL_ENOUGH(bytes) (ADD_SLOP(bytes) <= \
        !            64:                                    (NFREELISTS-1)*GRANULARITY)
        !            65:        ptr_t ptrfree_freelists[NFREELISTS];
        !            66:        ptr_t normal_freelists[NFREELISTS];
        !            67: #      ifdef GC_GCJ_SUPPORT
        !            68:          ptr_t gcj_freelists[NFREELISTS];
        !            69: #      endif
        !            70:                /* Free lists contain either a pointer or a small count */
        !            71:                /* reflecting the number of granules allocated at that  */
        !            72:                /* size.                                                */
        !            73:                /* 0 ==> thread-local allocation in use, free list      */
        !            74:                /*       empty.                                         */
        !            75:                /* > 0, <= DIRECT_GRANULES ==> Using global allocation, */
        !            76:                /*       too few objects of this size have been         */
        !            77:                /*       allocated by this thread.                      */
        !            78:                /* >= HBLKSIZE  => pointer to nonempty free list.       */
        !            79:                /* > DIRECT_GRANULES, < HBLKSIZE ==> transition to      */
        !            80:                /*    local alloc, equivalent to 0.                     */
        !            81: #      define DIRECT_GRANULES (HBLKSIZE/GRANULARITY)
        !            82:                /* Don't use local free lists for up to this much       */
        !            83:                /* allocation.                                          */
        !            84: #   endif
        !            85: } * GC_thread;
        !            86:
        !            87: # define THREAD_TABLE_SZ 128   /* Must be power of 2   */
        !            88: extern volatile GC_thread GC_threads[THREAD_TABLE_SZ];
        !            89:
        !            90: extern GC_bool GC_thr_initialized;
        !            91:
        !            92: GC_thread GC_lookup_thread(pthread_t id);
        !            93:
        !            94: void GC_stop_init();
        !            95:
        !            96: #endif /* GC_PTHREADS && !GC_SOLARIS_THREADS.... etc */
        !            97: #endif /* GC_PTHREAD_SUPPORT_H */