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version 1.2, 2000/04/10 08:31:30 version 1.3, 2001/04/20 07:39:18
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 Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers  Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
 Copyright (c) 1991-1995 by Xerox Corporation.  All rights reserved.  Copyright (c) 1991-1995 by Xerox Corporation.  All rights reserved.
 Copyright (c) 1996-1999 by Silicon Graphics.  All rights reserved.  Copyright (c) 1996-1999 by Silicon Graphics.  All rights reserved.
 Copyright (c) 1999 by Hewlett-Packard. All rights reserved.  Copyright (c) 1999-2000 by Hewlett-Packard. All rights reserved.
   
 THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED  THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
 OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.  OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
Line 12  Permission to modify the code and to distribute modifi
Line 12  Permission to modify the code and to distribute modifi
 provided the above notices are retained, and a notice that the code was  provided the above notices are retained, and a notice that the code was
 modified is included with the above copyright notice.  modified is included with the above copyright notice.
   
   
 For more details and the names of other contributors, see the  For more details and the names of other contributors, see the
 README file and gc.h.  This file describes typical use of  doc/README* files and include/gc.h.  This file describes typical use of
 the collector on a machine that is already supported.  the collector on a machine that is already supported.
   
   For the version number, see doc/README or version.h.
   
 INSTALLATION:  INSTALLATION:
 Under UN*X, type "make test".  Under OS/2 or Windows NT, copy the  Under UN*X, type "make test".  Under OS/2 or Windows 95, 98, Me, NT, or 2000,
 appropriate makefile to MAKEFILE, read it, and type "nmake test".  copy the appropriate makefile to MAKEFILE, read it, and type "nmake test".
 Read the machine specific README if one exists.  The only way to  (Under Windows, this assumes you have Microsoft command-line tools
 develop code with the collector for Windows 3.1 is to develop under  installed, and have DOS configured with enough environment space to run them.)
 Windows NT, and then to use win32S.  Read the machine specific README in the doc directory if one exists.
   The only way to develop code with the collector for Windows 3.1 is
   to develop under Windows NT or 95+, and then to use win32S.
   
 If you wish to use the cord (structured string) library type  If you need thread support, you will need to either follow the special
   platform-dependent instructions (win32), or add a suitable define
   option as described in Makefile.
   
   If you wish to use the cord (structured string) library, type
 "make cords". (This requires an ANSI C compiler.  You may need  "make cords". (This requires an ANSI C compiler.  You may need
 to redefine CC in the Makefile.)  to redefine CC in the Makefile. The CORD_printf implementation in
   cordprnt.c is known to be less than perfectly portable.  The rest
   of the package should still work.)
   
 If you wish to use the collector from C++, type  If you wish to use the collector from C++, type
 "make c++".  These add further files to gc.a and to the include  "make c++".  These add further files to gc.a and to the include
 subdirectory.  See cord/cord.h and gc_c++.h.  subdirectory.  See cord/cord.h and include/gc_cpp.h.
   
 TYPICAL USE:  TYPICAL USE:
 Include "gc.h" from this directory.  Link against the appropriate library  Include "gc.h" from the include subdirectory.  Link against the
 ("gc.a" under UN*X).  Replace calls to malloc by calls to GC_MALLOC,  appropriate library ("gc.a" under UN*X).  Replace calls to malloc
 and calls to realloc by calls to GC_REALLOC.  If the object is known  by calls to GC_MALLOC, and calls to realloc by calls to GC_REALLOC.
 to never contain pointers, use GC_MALLOC_ATOMIC instead of  If the object is known to never contain pointers, use GC_MALLOC_ATOMIC
 GC_MALLOC.  instead of GC_MALLOC.
   
 Define GC_DEBUG before including gc.h for additional checking.  Define GC_DEBUG before including gc.h for additional checking.
   
   More documentation on the collector interface can be found at
   http://www.hpl.hp.com/personal/Hans_Boehm/gc/gcinterface.html,
   in doc/README, and in include/gc.h .
   
   WARNINGS:
   
   Do not store the only pointer to an object in memory allocated
   with system malloc, since the collector usually does not scan
   memory allocated in this way.
   
   Use with threads may be supported on your system, but requires the
   collector to be built with thread support.  See Makefile.  The collector
   does not guarantee to scan thread-local storage (e.g. of the kind
   accessed with pthread_getspecific()).  The collector does scan
   thread stacks though, so generally the best solution is to ensure that
   any pointers stored in thread-local storage are also stored on the
   thread's stack for the duration of their lifetime.
   
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