Ejemplo n.º 1
0
static ERTS_INLINE int
io_list_vec_count(Eterm obj, Uint *v_size,
                  Uint *c_size, Uint *b_size, Uint *in_clist,
                  Uint *p_v_size, Uint *p_c_size, Uint *p_in_clist,
                  Uint blimit)
{
    Uint size = binary_size(obj);
    Eterm real;
    ERTS_DECLARE_DUMMY(Uint offset);
    int bitoffs;
    int bitsize;
    ERTS_GET_REAL_BIN(obj, real, offset, bitoffs, bitsize);
    if (bitsize != 0) return 1;
    if (thing_subtag(*binary_val(real)) == REFC_BINARY_SUBTAG &&
	bitoffs == 0) {
	*b_size += size;
        if (*b_size < size) return 2;
	*in_clist = 0;
        ++*v_size;
        /* If iov_len is smaller then Uint we split the binary into*/
        /* multiple smaller (2GB) elements in the iolist.*/
	*v_size += size / MAX_SYSIOVEC_IOVLEN;
        if (size >= blimit) {
            *p_in_clist = 0;
            ++*p_v_size;
        } else {
            *p_c_size += size;
            if (!*p_in_clist) {
                *p_in_clist = 1;
                ++*p_v_size;
            }
        }
    } else {
	*c_size += size;
        if (*c_size < size) return 2;
	if (!*in_clist) {
	    *in_clist = 1;
	    ++*v_size;
	}
	*p_c_size += size;
	if (!*p_in_clist) {
	    *p_in_clist = 1;
	    ++*p_v_size;
	}
    }
    return 0;
}
Ejemplo n.º 2
0
static erts_tse_t *async_thread_init(ErtsAsyncQ *aq)
{
    ErtsThrQInit_t qinit = ERTS_THR_Q_INIT_DEFAULT;
    erts_tse_t *tse = erts_tse_fetch();
    ERTS_DECLARE_DUMMY(Uint no);

#ifdef ERTS_SMP
    ErtsThrPrgrCallbacks callbacks;

    callbacks.arg = (void *) tse;
    callbacks.wakeup = async_wakeup;
    callbacks.prepare_wait = NULL;
    callbacks.wait = NULL;

    erts_thr_progress_register_unmanaged_thread(&callbacks);
#endif

    qinit.live.queue = ERTS_THR_Q_LIVE_LONG;
    qinit.live.objects = ERTS_THR_Q_LIVE_SHORT;
    qinit.arg = (void *) tse;
    qinit.notify = async_wakeup;
#if ERTS_USE_ASYNC_READY_Q
    qinit.auto_finalize_dequeue = 0;
#endif

    erts_thr_q_initialize(&aq->thr_q, &qinit);

    /* Inform main thread that we are done initializing... */
    erts_mtx_lock(&async->init.data.mtx);
    no = async->init.data.no_initialized++;
    erts_cnd_signal(&async->init.data.cnd);
    erts_mtx_unlock(&async->init.data.mtx);

    erts_msacc_init_thread("async", no, 0);

    return tse;
}
Ejemplo n.º 3
0
Archivo: copy.c Proyecto: Airon2014/otp
Uint size_object(Eterm obj)
#endif
{
    Uint sum = 0;
    Eterm* ptr;
    int arity;

    DECLARE_ESTACK(s);
    for (;;) {
	switch (primary_tag(obj)) {
	case TAG_PRIMARY_LIST:
	    sum += 2;
	    ptr = list_val_rel(obj,base);
	    obj = *ptr++;
	    if (!IS_CONST(obj)) {
		ESTACK_PUSH(s, obj);
	    }	    
	    obj = *ptr;
	    break;
	case TAG_PRIMARY_BOXED:
	    {
		Eterm hdr = *boxed_val_rel(obj,base);
		ASSERT(is_header(hdr));
		switch (hdr & _TAG_HEADER_MASK) {
		case ARITYVAL_SUBTAG:
		    ptr = tuple_val_rel(obj,base);
		    arity = header_arity(hdr);
		    sum += arity + 1;
		    if (arity == 0) { /* Empty tuple -- unusual. */
			goto pop_next;
		    }
		    while (arity-- > 1) {
			obj = *++ptr;
			if (!IS_CONST(obj)) {
			    ESTACK_PUSH(s, obj);
			}
		    }
		    obj = *++ptr;
		    break;
		case FUN_SUBTAG:
		    {
			Eterm* bptr = fun_val_rel(obj,base);
			ErlFunThing* funp = (ErlFunThing *) bptr;
			unsigned eterms = 1 /* creator */ + funp->num_free;
			unsigned sz = thing_arityval(hdr);
			sum += 1 /* header */ + sz + eterms;
			bptr += 1 /* header */ + sz;
			while (eterms-- > 1) {
			  obj = *bptr++;
			  if (!IS_CONST(obj)) {
			    ESTACK_PUSH(s, obj);
			  }
			}
			obj = *bptr;
			break;
		    }
		case SUB_BINARY_SUBTAG:
		    {
			Eterm real_bin;
			ERTS_DECLARE_DUMMY(Uint offset); /* Not used. */
			Uint bitsize;
			Uint bitoffs;
			Uint extra_bytes;
			Eterm hdr;
			ERTS_GET_REAL_BIN_REL(obj, real_bin, offset, bitoffs, bitsize, base);
			if ((bitsize + bitoffs) > 8) {
			    sum += ERL_SUB_BIN_SIZE;
			    extra_bytes = 2;
			} else if ((bitsize + bitoffs) > 0) {
			    sum += ERL_SUB_BIN_SIZE;
			    extra_bytes = 1;
			} else {
			    extra_bytes = 0;
			}
			hdr = *binary_val_rel(real_bin,base);
			if (thing_subtag(hdr) == REFC_BINARY_SUBTAG) {
			    sum += PROC_BIN_SIZE;
			} else {
			    sum += heap_bin_size(binary_size_rel(obj,base)+extra_bytes);
			}
			goto pop_next;
		    }
		    break;
		case MAP_SUBTAG:
		    {
			Uint n;
			map_t *mp;
			mp  = (map_t*)map_val_rel(obj,base);
			ptr = (Eterm *)mp;
			n   = map_get_size(mp) + 1;
			sum += n + 2;
			ptr += 2; /* hdr + size words */
			while (n--) {
			    obj = *ptr++;
			    if (!IS_CONST(obj)) {
				ESTACK_PUSH(s, obj);
			    }
			}
			goto pop_next;
		    }
		    break;
		case BIN_MATCHSTATE_SUBTAG:
		    erl_exit(ERTS_ABORT_EXIT,
			     "size_object: matchstate term not allowed");
		default:
		    sum += thing_arityval(hdr) + 1;
		    goto pop_next;
		}
	    }
	    break;
	case TAG_PRIMARY_IMMED1:
	pop_next:
	    if (ESTACK_ISEMPTY(s)) {
		DESTROY_ESTACK(s);
		return sum;
	    }
	    obj = ESTACK_POP(s);
	    break;
	default:
	    erl_exit(ERTS_ABORT_EXIT, "size_object: bad tag for %#x\n", obj);
	}
    }
}