\ count execution of control-flow edges
\ Copyright (C) 2004 Free Software Foundation, Inc.
\ This file is part of Gforth.
\ Gforth is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
\ as published by the Free Software Foundation; either version 2
\ of the License, or (at your option) any later version.
\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\ GNU General Public License for more details.
\ You should have received a copy of the GNU General Public License
\ along with this program; if not, write to the Free Software
\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
\ relies on some Gforth internals
\ !! assumption: each file is included only once; otherwise you get
\ the counts for just one of the instances of the file. This can be
\ fixed by making sure that every source position occurs only once as
\ a profile point.
cell% field profile-next
cell% 2* field profile-count
cell% 2* field profile-sourcepos
cell% field profile-char \ character position in line
end-struct profile% \ profile point
variable profile-points \ linked list of profile%
0 profile-points !
: new-profile-point ( -- addr )
profile% %alloc >r
0. r@ profile-count 2!
current-sourcepos r@ profile-sourcepos 2!
>in @ r@ profile-char !
profile-points @ r@ profile-next !
r@ profile-points !
: dinc ( d-addr -- )
\ increment double pointed to by d-addr
dup 2@ 1. d+ rot 2! ;
: profile-this ( -- )
new-profile-point profile-count POSTPONE literal POSTPONE dinc ;
: profile-:-hook ( -- )
defers :-hook profile-this ;
: print-profile ( -- )
profile-points @ begin
r@ profile-sourcepos 2@ .sourcepos ." :"
r@ profile-char @ 0 .r ." : "
r@ profile-count 2@ 0 d.r cr
r> profile-next @
' profile-:-hook is :-hook