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/*
* SCCS: @(#)fork.c 1.9 (98/08/28)
*
* UniSoft Ltd., London, England
*
* (C) Copyright 1992 X/Open Company Limited
*
* All rights reserved. No part of this source code may be reproduced,
* stored in a retrieval system, or transmitted, in any form or by any
* means, electronic, mechanical, photocopying, recording or otherwise,
* except as stated in the end-user licence agreement, without the prior
* permission of the copyright owners.
*
* X/Open and the 'X' symbol are trademarks of X/Open Company Limited in
* the UK and other countries.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/************************************************************************
SCCS: @(#)fork.c 1.9 98/08/28 TETware release 3.3
NAME: fork.c
PRODUCT: TETware
AUTHOR: Andrew Dingwall, UniSoft Ltd.
DATE CREATED: April 1992
DESCRIPTION:
function to fork a new process
this function is not implemented on WIN32
MODIFICATIONS:
Denis McConalogue, UniSoft Limited, September 1993
make sure tet_mypid is updated after fork()
Andrew Dingwall, UniSoft Ltd., July 1998
Added support for shared API libraries.
Aaron Plattner, April 2010
Fixed warnings when compiled with GCC's -Wall option.
************************************************************************/
#include <stdio.h>
#include <unistd.h>
#include "dtmac.h"
#include "globals.h"
#include "dtetlib.h"
/*
** tet_dofork() - try to fork a few times until successful
**
** return fork() return value
*/
int tet_dofork()
{
register int rc, try;
for (try = 0; (rc = fork()) < 0 && try < 5; try++)
(void) sleep((unsigned) TET_MAX(1 << try, 2));
if (rc == 0)
tet_mypid = (int) getpid();
return(rc);
}
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