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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 Lesser General Public License version 2.1, with the */
/* special exception on linking described in the 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 caml_unix_pipe(value cloexec, value unit)
{
CAMLparam0();
CAMLlocal2(readfd, writefd);
SECURITY_ATTRIBUTES attr;
HANDLE readh, writeh;
value res;
attr.nLength = sizeof(attr);
attr.lpSecurityDescriptor = NULL;
attr.bInheritHandle = caml_unix_cloexec_p(cloexec) ? FALSE : TRUE;
if (! CreatePipe(&readh, &writeh, &attr, SIZEBUF)) {
caml_win32_maperr(GetLastError());
caml_uerror("pipe", Nothing);
}
readfd = caml_win32_alloc_handle(readh);
writefd = caml_win32_alloc_handle(writeh);
res = caml_alloc_small(2, 0);
Field(res, 0) = readfd;
Field(res, 1) = writefd;
CAMLreturn(res);
}
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