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(* File: unsafe_common.ml
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Jane Street Holding, LLC
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email: mmottl\@janestcapital.com
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WWW: http://www.janestcapital.com/ocaml
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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(* Unsafe_common: functions common to unsafe binary protocol conversion. *)
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external get_sptr : buf -> pos : pos -> sptr = "get_buf_ptr_stub" "noalloc"
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external get_eptr : buf -> pos : pos -> eptr = "get_buf_ptr_stub" "noalloc"
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external get_buf_pos :
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start : sptr -> cur : sptr -> pos = "get_buf_pos_stub" "noalloc"
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external get_safe_buf_pos :
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buf -> start : sptr -> cur : sptr -> pos = "get_safe_buf_pos_stub" "noalloc"
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external alloc_sptr_ptr :
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buf -> pos : pos -> sptr_ptr = "alloc_sptr_ptr_stub" "noalloc"
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external dealloc_sptr_ptr :
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buf -> sptr_ptr -> pos = "dealloc_sptr_ptr_stub" "noalloc"
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external get_sptr_ptr : sptr_ptr -> buf -> pos = "get_sptr_ptr_stub" "noalloc"
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external set_sptr_ptr :
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sptr_ptr -> buf -> pos : pos -> unit = "set_sptr_ptr_stub" "noalloc"
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external get_sptr_ptr_sptr :
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sptr_ptr -> sptr = "get_sptr_ptr_sptr_stub" "noalloc"
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external set_sptr_ptr_sptr :
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sptr_ptr -> sptr -> unit = "set_sptr_ptr_sptr_stub" "noalloc"
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external get_ptr_string : sptr -> eptr -> string = "get_ptr_string_stub"
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let get_read_init buf ~pos_ref =
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let start_pos = !pos_ref in
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if start_pos < 0 then array_bound_error ();
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let buf_len = Array1.dim buf in
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if start_pos > buf_len then raise Buffer_short;
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let sptr_ptr = alloc_sptr_ptr buf ~pos:start_pos in
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let eptr = get_eptr buf ~pos:buf_len in
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lib/unsafe_common.ml
