/******************************************************************************
 *
 * PROJECT: Carnegie Mellon Planetary Rover Project
 *          Task Control Architecture 
 * 
 * MODULE: burying globals under a rock!
 *
 * FILE: global.c
 *
 * ABSTRACT: define module global.
 *
 * Copyright (c) 2008, Carnegie Mellon University
 *     This software is distributed under the terms of the 
 *     Simplified BSD License (see ipc/LICENSE.TXT)
 *
 * REVISION HISTORY
 *
 * $Log: globalM.c,v $
 * Revision 2.3  2009/01/12 15:54:56  reids
 * Added BSD Open Source license info
 *
 * Revision 2.2  2000/07/03 17:03:23  hersh
 * Removed all instances of "tca" in symbols and messages, plus changed
 * the names of all other symbols which conflicted with TCA.  This new
 * version of IPC should be able to interoperate TCA fully.  Client
 * programs can now link to both tca and ipc.
 *
 * Revision 2.1.1.1  1999/11/23 19:07:35  reids
 * Putting IPC Version 2.9.0 under local (CMU) CVS control.
 *
 * Revision 1.1  1996/05/09 01:01:24  reids
 * Moved all the X_IPC files over to the IPC directory.
 * Fixed problem with sending NULL data.
 * Added function IPC_setCapacity.
 * VxWorks m68k version released.
 *
 * Revision 1.1  1996/03/03 04:31:26  reids
 * First release of IPC files.  X_IPC code (8.5), modified to support NM-DS1 IPC.
 *
 * Revision 1.16  1995/04/07  05:03:06  rich
 * Fixed GNUmakefiles to find the release directory.
 * Cleaned up libc.h file for sgi and vxworks.  Moved all system includes
 * into libc.h
 * Got direct queries to work.
 * Fixed problem in allocating/initializing generic mats.
 * The direct flag (-c) now mostly works.  Connect message has been extended to
 * indicate when direct connections are the default.
 * Problem with failures on sunOS machines.
 * Fixed problem where x_ipcError would not print out its message if logging had
 * not been initialized.
 * Fixed another memory problem in modVar.c.
 * Fixed problems found in by sgi cc compiler.  Many type problems.
 *
 * Revision 1.15  1994/05/25  04:57:20  rich
 * Defined macros for registering simple messages and handlers at once.
 * Added function to ignore logging for all messages associated with a
 * global variable.
 * Moved module global variable routines to a new file so they are not
 * included in the .sa library file.  Gets better code sharing and lets you
 * debug these routines.
 * Added code to force the module variables to be re-initialized after the
 * server goes down.
 * x_ipcClose now will not crash if the server is down and frees some module
 * memory.
 * The command line flag "-u" turns off the simple user interface.
 * Added routines to free hash tables and id tables.
 *
 * Revision 1.14  1994/05/24  13:48:44  reids
 * Fixed so that messages are not sent until a x_ipcWaitUntilReady is received
 * (and the expected number of modules have all connected)
 *
 * Revision 1.13  1994/05/11  01:57:28  rich
 * Now set an invalid x_ipcServerGlobal (a socket fd) to -1 rather than 0
 * which is stdout.
 * Added checks to make sure x_ipcServerGlobal is a valid socket before
 * sending messages or waiting for messages.
 *
 * Revision 1.12  1994/04/28  16:16:07  reids
 * Changes in X_IPC Version 7.6:
 *  1) New functions: x_ipcIgnoreLogging and x_ipcResumeLogging
 *  2) Code for MacIntosh (MPW) version of X_IPC
 *
 * Revision 1.11  1994/04/26  16:23:28  rich
 * Now you can register an exit handler before anything else and it will
 * get called if connecting to central fails.
 * Also added code to handle pipe breaks during writes.
 *
 * Revision 1.10  1994/04/16  19:42:14  rich
 * First release of X_IPC for the DEC alpha.
 * Changes were needed because longs are 64 bits.
 * Fixed alignment assumption in the data message format.
 * Fixed the way offsets are calculated for variable length arrays.  This
 * was a problem even without 64 bit longs and pointers.
 *
 * Added the commit date to the version information printed out with the -v
 * option.
 *
 * Now uses standard defines for byte order
 * (BYTE_ORDER = BIG_ENDIAN, LITTLE_ENDIAN or PDP_ENDIAN)
 *
 * Defined alignment types: ALIGN_INT ALINE_LONGEST and ALIGN_WORD.
 *
 * *** WARNING ***
 * sending longs between alphas and non-alpha machines will probably not work.
 * *** WARNING ***
 *
 * Revision 1.9  1994/04/15  17:09:53  reids
 * Changes to support vxWorks version of X_IPC 7.5
 *
 * Revision 1.8  1993/12/14  17:33:40  rich
 * Changed getMGlobal to GET_M_GLOBAL and changed getSGlobal to
 * GET_S_GLOBAL to conform to Chris' software standards.
 *
 * Patched problem with connecting between machines with different byte
 * orders.  The real fix requires changing the way formats are stored.
 * Searching for structural similar formats does not guarantee that you
 * find the right format.
 *
 * Revision 1.7  1993/11/21  20:17:54  rich
 * Added shared library for sun4c_411 sunos machines.
 * Added install to the makefile.
 * Fixed problems with global variables.
 *
 * Revision 1.6  1993/10/20  19:00:33  rich
 * Fixed bug with self registed messages in the lisp version.
 * Added new routine : x_ipcGetServerGlobal to get the server socket.
 * Fixed some bad global references for the lisp version.
 * Updated some prototypes.
 *
 * Revision 1.5  1993/08/30  21:53:31  fedor
 * V7+V6+VXWORKS Everything compiles but there are initialization problems.
 *
 * Revision 1.4  1993/08/27  08:38:37  fedor
 * Pass 2 aat a V7+V6+VxWorks merge. Many many problems with pointless casting.
 *
 * Revision 1.3  1993/08/27  07:14:56  fedor
 * First Pass at V7 and V6+VXWORKS merge
 *
 * Revision 1.2  1993/06/13  23:28:09  rich
 * Made changes for lisp needed for vx works style global variables.
 * Fixed some random compiler warnings.
 * Moved test routines to test directory.
 *
 * Revision 1.1.1.1  1993/05/20  05:45:23  rich
 * Importing x_ipc version 8
 *
 * Revision 8.1  1993/05/20  00:29:57  rich
 * RTG - initial checkin of Chris Fedor's version 8 of x_ipc
 *
 * Revision 1.2  1993/05/19  17:23:50  fedor
 * Added Logging.
 *
 * $Revision: 2.3 $
 * $Date: 2009/01/12 15:54:56 $
 * $Author: reids $
 *
 *****************************************************************************/

#include "globalM.h"

#if defined(VXWORKS)
/* VX works needs to access the globals through a pointer. */
GM_PTR x_ipc_gM = NULL;

#else

/* In general, the globals can just be statically allocated. */
GM_PTR x_ipc_gM_ptr = NULL;
GM_TYPE x_ipc_gM;

#endif