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