Hello,
I am using XOTcl 1.6.3, on 64bit Linux platform, with ActiveState 8.6.b2 distribution. The distribution itself is 32bit. I also tried and have the same problem with 32bit ActiveState 8.5.7 version.
The simplest way to reproduce the problem is to do the following:
Class X;
set parameter_list {parameter1 parameter2 .... parameter100}; ### 100 or so values
X instproc init args { my requireNamespace; ### I need that foreach p [set ::parameter_list] { my parametercmd $p; my $p {}; }; next; };
#then run the following
time {X x; x destroy} 1000000
### the above line eats up a lot of memory and it is not being released during destruction of an instance.
Thanks.
Hmm,
a quick test shows that it runs in constant memory (1.8 MB) with xotcl 1.6.3 and xotcl 1.6.4 under Mac OS X Leopard with Tcl 8.5.7. i just modified the script slightly to make it a complete script (see below).
will check tomorrow on more platforms.
-gustaf neumann
========================== set i 0 time {lappend ::parameter_list parameter[incr i]} 100
Class X X instproc init args { my requireNamespace; ### I need that foreach p [set ::parameter_list] { my parametercmd $p my $p {} } next }
time {X x; x destroy} 1000000 ==========================
Victor Mayevski schrieb:
Hello,
I am using XOTcl 1.6.3, on 64bit Linux platform, with ActiveState 8.6.b2 distribution. The distribution itself is 32bit. I also tried and have the same problem with 32bit ActiveState 8.5.7 version.
The simplest way to reproduce the problem is to do the following:
Class X;
set parameter_list {parameter1 parameter2 .... parameter100}; ### 100 or so values
X instproc init args { my requireNamespace; ### I need that foreach p [set ::parameter_list] { my parametercmd $p; my $p {}; }; next; };
#then run the following
time {X x; x destroy} 1000000
### the above line eats up a lot of memory and it is not being released during destruction of an instance.
Thanks. _______________________________________________ Xotcl mailing list Xotcl@alice.wu-wien.ac.at http://alice.wu-wien.ac.at/mailman/listinfo/xotcl
Dear Victor and all
A small update: - the problem has nothing to do with 64 bit - the problem has nothing to do parametercmd, but with namespaced variables (even worse) - the problem does not show up, when both xotcl and tcl are compiled against tcl 8.4.* or tcl 8.5.* - the problem shows only up, when xotcl is compiled against tcl 8.4 and loaded into a tclsh compiled with tcl 8.5 - the problem is related to varReform, tcl refuses to delete the variables when TclDeleteVars() is called. It is not a tcl bug, but most likely related with the "forward-compatible" mode of xotcl (tcl 8.5 variables are quite different to 8.4, but at the time xotcl is compiled against tcl 8.4, it does not know anything about the new variable structures/semantics; it tries hard to behave correctly, but obviouly, not hard enough).
normally, i would be inclined to say "please take a matching version" (use xotcl compiled for 8.5 with a tclsh compiled with 8.5, etc), but since it is getting more and more likely, that xotcl 2.0 will require tcl 8.5 or newer, i'll try to look into the problem further, probably over the weekend
all the best -gustaf neumann
Gustaf Neumann schrieb:
Hmm,
a quick test shows that it runs in constant memory (1.8 MB) with xotcl 1.6.3 and xotcl 1.6.4 under Mac OS X Leopard with Tcl 8.5.7. i just modified the script slightly to make it a complete script (see below).
will check tomorrow on more platforms.
-gustaf neumann
========================== set i 0 time {lappend ::parameter_list parameter[incr i]} 100
Class X X instproc init args { my requireNamespace; ### I need that foreach p [set ::parameter_list] { my parametercmd $p my $p {} } next }
time {X x; x destroy} 1000000
Victor Mayevski schrieb:
Hello,
I am using XOTcl 1.6.3, on 64bit Linux platform, with ActiveState 8.6.b2 distribution. The distribution itself is 32bit. I also tried and have the same problem with 32bit ActiveState 8.5.7 version.
The simplest way to reproduce the problem is to do the following:
Class X;
set parameter_list {parameter1 parameter2 .... parameter100}; ### 100 or so values
X instproc init args { my requireNamespace; ### I need that foreach p [set ::parameter_list] { my parametercmd $p; my $p {}; }; next; };
#then run the following
time {X x; x destroy} 1000000
### the above line eats up a lot of memory and it is not being released during destruction of an instance.
Thanks. _______________________________________________ Xotcl mailing list Xotcl@alice.wu-wien.ac.at http://alice.wu-wien.ac.at/mailman/listinfo/xotcl
Xotcl mailing list Xotcl@alice.wu-wien.ac.at http://alice.wu-wien.ac.at/mailman/listinfo/xotcl
Dear Victor,
The bug is fixed in the xotcl git repository. As described before, the bug existed only when XOTcl was compiled against Tcl 8.4 and loaded into some 8.5 or newer version of Tcl. The bug was located in the XOTcl var resolver (introduced in XOTcl 1.6.3) and damaged in the above constellation the reference count of variables.
The problem affects primarily the user of the binary ActiveState packages, since all other distros i know compile extensions against the same version of the library.
I will release XOTcl 1.6.5 soon (most likely within a week). Users having compiled XOTcl against the same major release (e.g. 8.4. or 8.5) won't have to upgrade.
Best regards -gustaf neumann
Gustaf Neumann schrieb:
Dear Victor and all
A small update:
- the problem has nothing to do with 64 bit
- the problem has nothing to do parametercmd, but with namespaced variables (even worse)
- the problem does not show up, when both xotcl and tcl are compiled against tcl 8.4.* or tcl 8.5.*
- the problem shows only up, when xotcl is compiled against tcl 8.4 and loaded into a tclsh compiled with tcl 8.5
- the problem is related to varReform, tcl refuses to delete the variables when TclDeleteVars() is called. It is not a tcl bug, but most likely related with the "forward-compatible" mode of xotcl (tcl 8.5 variables are quite different to 8.4, but at the time xotcl is compiled against tcl 8.4, it does not know anything about the new variable structures/semantics; it tries hard to behave correctly, but obviouly, not hard enough).
normally, i would be inclined to say "please take a matching version" (use xotcl compiled for 8.5 with a tclsh compiled with 8.5, etc), but since it is getting more and more likely, that xotcl 2.0 will require tcl 8.5 or newer, i'll try to look into the problem further, probably over the weekend
all the best -gustaf neumann
Gustaf Neumann schrieb:
Hmm,
a quick test shows that it runs in constant memory (1.8 MB) with xotcl 1.6.3 and xotcl 1.6.4 under Mac OS X Leopard with Tcl 8.5.7. i just modified the script slightly to make it a complete script (see below).
will check tomorrow on more platforms.
-gustaf neumann
========================== set i 0 time {lappend ::parameter_list parameter[incr i]} 100
Class X X instproc init args { my requireNamespace; ### I need that foreach p [set ::parameter_list] { my parametercmd $p my $p {} } next }
time {X x; x destroy} 1000000
Victor Mayevski schrieb:
Hello,
I am using XOTcl 1.6.3, on 64bit Linux platform, with ActiveState 8.6.b2 distribution. The distribution itself is 32bit. I also tried and have the same problem with 32bit ActiveState 8.5.7 version.
The simplest way to reproduce the problem is to do the following:
Class X;
set parameter_list {parameter1 parameter2 .... parameter100}; ### 100 or so values
X instproc init args { my requireNamespace; ### I need that foreach p [set ::parameter_list] { my parametercmd $p; my $p {}; }; next; };
#then run the following
time {X x; x destroy} 1000000
### the above line eats up a lot of memory and it is not being released during destruction of an instance.
Thanks. _______________________________________________ Xotcl mailing list Xotcl@alice.wu-wien.ac.at http://alice.wu-wien.ac.at/mailman/listinfo/xotcl
Xotcl mailing list Xotcl@alice.wu-wien.ac.at http://alice.wu-wien.ac.at/mailman/listinfo/xotcl
Xotcl mailing list Xotcl@alice.wu-wien.ac.at http://alice.wu-wien.ac.at/mailman/listinfo/xotcl
-
Gustaf Neumann -
Victor Mayevski