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/*
* SCCS: @(#)child.c 1.22 (98/09/01)
*
* 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: @(#)child.c 1.22 98/09/01 TETware release 3.3
NAME: child.c
PRODUCT: TETware
AUTHOR: Andrew Dingwall, UniSoft Ltd.
DATE CREATED: October 1992
DESCRIPTION:
tet_tcmc_main() is called from a different main() wrapper for each API,
providing the main() function for processes started by tet_exec()
and tet_remexec().
MODIFICATIONS:
Andrew Dingwall, UniSoft Ltd., December 1993
removed reference to dapi.h
Geoff Clare, UniSoft Ltd., August 1996
Changes for TETWare.
Geoff Clare, UniSoft Ltd., 21 August 1996
Made include of <stdio.h> non-conditional.
Geoff Clare, UniSoft Ltd, Sept 1996
Moved tet_blockable_sigs setup to tet_init_blockable_sigs().
Changes for TETware-Lite.
Geoff Clare, UniSoft Ltd., Oct 1996
restructured tcm source to avoid "ld -r"
Geoff Clare, UniSoft Ltd., July 1997
Changes to support NT threads.
Andrew Dingwall, UniSoft Ltd., July 1997
Added code to generate a new (unique) context value on Win32 systems,
since it is not possible for tet_spawn() to call tet_setcontext()
on a Win32 system.
Andrew Dingwall, UniSoft Ltd., February 1998
Use TETware-specific macros to access threads functions and
data items.
Andrew Dingwall, UniSoft Ltd., July 1998
Added support for shared API libraries.
Note that this includes a change to the calling convention for
child processes.
Aaron Plattner, April 2010
Fixed warnings when compiled with GCC's -Wall option.
************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include "dtmac.h"
#include "dtmsg.h"
#include "dtthr.h"
#include "alarm.h"
#include "error.h"
#include "synreq.h"
#include "dtetlib.h"
#include "globals.h"
#include "tcmfuncs.h"
#include "tet_api.h"
#include "apilib.h"
#include "sigsafe.h"
/* global variables, values inhereted from tet_exec() and tet_remexec() */
#ifdef TET_THREADS
static int start_errno;
static int start_child;
static int start_alrm_flag;
static long start_block;
static long start_sequence;
#endif /* TET_THREADS */
int tet_tcmc_main(argc, argv)
int argc;
char **argv;
{
register int rc;
#ifdef TET_THREADS
/* initial thread ID */
tet_start_tid = TET_THR_SELF();
/* set up thread-specific data */
if (TET_THR_KEYCREATE(&tet_errno_key) != 0 ||
TET_THR_KEYCREATE(&tet_child_key) != 0 ||
TET_THR_KEYCREATE(&tet_alrm_flag_key) != 0 ||
TET_THR_KEYCREATE(&tet_block_key) != 0 ||
TET_THR_KEYCREATE(&tet_sequence_key) != 0)
{
/* can't use tet_error() yet */
(void) fprintf(stderr,
"%s: TET_THR_KEYCREATE() failed in TCM startup",
tet_progname);
exit(EXIT_FAILURE);
}
TET_THR_SETSPECIFIC(tet_errno_key, (void *) &start_errno);
TET_THR_SETSPECIFIC(tet_child_key, (void *) &start_child);
TET_THR_SETSPECIFIC(tet_alrm_flag_key, (void *) &start_alrm_flag);
TET_THR_SETSPECIFIC(tet_block_key, (void *) &start_block);
TET_THR_SETSPECIFIC(tet_sequence_key, (void *) &start_sequence);
/* initialise all mutexes */
tet_mtx_init();
#endif
if (argc < TET_TCMC_USER_ARGS + 1)
fatal(0, "argument count wrong; process must be executed by",
tet_callfuncname());
/*
** set the global variables from the command line -
** on WIN32 systems there is no fork() in the parent process so
** tet_setcontext() and tet_setblock() have not yet been called;
** so argv[3] and argv[4] are the context and block values from the
** parent and we must simulate calls to tet_setcontext() and
** tet_setblock() in this process
**
** the pids get reused too quickly on WIN32 systems to be useful
** as a context value;
** we do the best we can to generate a unique context value
** which can be used to distinguish journal output from that
** of other processes that write to the same journal
*/
tet_thistest = atoi(*(argv + TET_TCMC_THISTEST));
tet_activity = atol(*(argv + TET_TCMC_ACTIVITY));
tet_context = atol(*(argv + TET_TCMC_CONTEXT));
# ifdef TET_THREADS
tet_next_block = atol(*(argv + TET_TCMC_BLOCK));
# else
tet_block = atol(*(argv + TET_TCMC_BLOCK));
# endif
argc -= TET_TCMC_USER_ARGS;
argv += TET_TCMC_USER_ARGS;
tet_pname = *argv;
tet_init_blockable_sigs();
/* initialise the server and transport stuff */
tet_tcminit(argc, argv);
/* start a new block and read in the config variables */
tet_setblock();
tet_config();
/* call the user-supplied program */
rc = tet_main(argc, argv);
#ifdef TET_THREADS
tet_cln_threads(0);
tet_mtx_destroy();
tet_mtx_init();
#endif
/* log off all the servers and exit */
tet_logoff();
return(rc);
}
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