45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
/***********************************************************************/
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/* */
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/* OCaml */
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/* */
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/* Xavier Leroy and Pascal Cuoq, projet Cristal, INRIA Rocquencourt */
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/* */
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/* Copyright 1996 Institut National de Recherche en Informatique et */
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/* en Automatique. All rights reserved. This file is distributed */
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/* under the terms of the GNU Library General Public License, with */
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/* the special exception on linking described in file ../../LICENSE. */
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/* */
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/***********************************************************************/
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#include <caml/mlvalues.h>
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#include <caml/memory.h>
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#include <caml/alloc.h>
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#include "unixsupport.h"
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#include <fcntl.h>
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/* PR#4749: pick a size that matches that of I/O buffers */
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#define SIZEBUF 4096
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CAMLprim value unix_pipe(value unit)
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{
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SECURITY_ATTRIBUTES attr;
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HANDLE readh, writeh;
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value readfd = Val_unit, writefd = Val_unit, res;
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attr.nLength = sizeof(attr);
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attr.lpSecurityDescriptor = NULL;
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attr.bInheritHandle = TRUE;
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if (! CreatePipe(&readh, &writeh, &attr, SIZEBUF)) {
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win32_maperr(GetLastError());
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uerror("pipe", Nothing);
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}
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Begin_roots2(readfd, writefd)
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readfd = win_alloc_handle(readh);
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writefd = win_alloc_handle(writeh);
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res = alloc_small(2, 0);
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Field(res, 0) = readfd;
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Field(res, 1) = writefd;
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End_roots();
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return res;
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}
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