ref: 30bf1c45cac396a3b9637cfe40cb1bba4ebca7a9
dir: /sys/lib/ghostscript/traceop.ps/
% Copyright (C) 1992, 1993, 1994, 1999 Aladdin Enterprises. All rights reserved.
%
% This software is provided AS-IS with no warranty, either express or
% implied.
%
% This software is distributed under license and may not be copied,
% modified or distributed except as expressly authorized under the terms
% of the license contained in the file LICENSE in this distribution.
%
% For more information about licensing, please refer to
% http://www.ghostscript.com/licensing/. For information on
% commercial licensing, go to http://www.artifex.com/licensing/ or
% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
% San Rafael, CA 94903, U.S.A., +1(415)492-9861.
% $Id: traceop.ps,v 1.4 2002/02/21 21:49:28 giles Exp $
% Trace individual operators or procedures.
% <opref> is <opname> or <opname> <dict>
% (dict defaults to dict where op is currently defined, if writable;
% otherwise uses userdict)
% <opref> traceop prints vmem usage before;
% <opref> <numargs|preproc> prints arguments or runs proc before;
% <opref> <numargs|preproc> <numresults|postproc>
% also prints results or runs proc after.
% If traceflush is true, flush the output after each printout.
/traceflush true def
currentpacking true setpacking
.currentglobal true .setglobal
% Define the default "before" action
/tracebefore { vmstatus 3 traceprint pop pop pop } def
% Define the default "after" action
/traceafter { } def
/traceprint {
dup type /integertype eq {
1 sub -1 0 { ( ) print index ==only } for
} {
exec
} ifelse
} bind def
/traceend {
traceflush { flush } if
} bind def
/traceop {
userdict begin
dup type dup /nametype eq exch /dicttype eq or { { tracebefore } } if
1 index type dup /nametype eq exch /dicttype eq or { { traceafter } } if
/.tpost exch def /.tpre exch def
dup type /dicttype ne {
dup where not { userdict 1 index {} put userdict } if
} if
dup dup wcheck not {
(Warning: substituting userdict for non-writable dictionary.) =
pop userdict
} if
/.tddict exch def /.tdict exch def /.tname exch cvlit def
.currentglobal [
.tname /=only cvx ( ) /print cvx
/.tpre load /traceprint cvx /traceend cvx
.tdict .tname get /.tdef 1 index cvlit def
dup xcheck {
dup type dup /arraytype eq exch /packedarraytype eq or {
/exec cvx
} if
} if
/.tpost load /traceprint cvx () /= cvx /traceend cvx
.tdef gcheck /.tpre load gcheck and /.tpost load gcheck and .setglobal
] cvx
.tdef type /operatortype eq {
.tname exch .makeoperator
} if
exch .setglobal
.tddict exch .tname exch put
end % userdict
} bind def
/tracebind /bind load def % in case someone wants to put it back
/bind { } def % disable
.setglobal
setpacking