Re: [racket-dev] Suggestions for monitoring unresponsive web server connection?
Following up on this -- what's the max number of open file descriptors that Racket allows? We're seeing some lingering ones (trying to trace the source, but wondering if this is the problem). We are also getting a lot of ssl error reports of the forms Connection error: ssl-accept/enable-break: accept failed (error:1407609C:SSL routines:SSL23_GET_CLIENT_HELLO:http request) Connection error: ssl-accept/enable-break: accept failed (input terminated prematurely) === context === /home/turnin/plt-5.1.1/lib/racket/collects/openssl/mzssl.rkt:919:10: loop /home/turnin/plt-5.1.1/lib/racket/collects/mzlib/thread.rkt:69:12: loop We're not doing any manual SSL operations (just the ssl settings to the web server startup). Still, are these traceable to something in our code? thanks, Kathi On Tue, Sep 6, 2011 at 8:13 PM, Kathi Fisler kfis...@gmail.com wrote: Our homework submission application, currently running under 5.1.1 with Jay's stateless infrastructure, has been going unresponsive on us a lot lately. In some cases, the process is still alive but the web server does not respond to requests. In some cases, the process has died. While this sometimes happens concurrently with high load, load is neither necessary nor sufficient. Are there commands we can use when we startup racket or the server that might give diagnostics to help trace the problem? We are not getting core dumps (even when the process dies). So far, monitoring top output hasn't revealed anything unusual or telling. Here's the uname -a listing, in case that is helpful: Linux turnin.cs.wpi.edu 2.6.18-238.12.1.el5 #1 SMP Tue May 31 13:22:04 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux thanks, Kathi _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] Suggestions for monitoring unresponsive web server connection?
On Wed, Sep 7, 2011 at 5:38 AM, Kathi Fisler kfis...@gmail.com wrote: Following up on this -- what's the max number of open file descriptors that Racket allows? We're seeing some lingering ones (trying to trace the source, but wondering if this is the problem). Racket shouldn't have any limit on these; the OS does have a limit, tho. But I'd expect that you'd get a Racket error saying something like out of file descriptors if you were running into that limit (unless there's a bug in that code...). Robby _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] syntax property duplication
On Sep 6, 2011, at 8:12 PM, Sam Tobin-Hochstadt wrote: On Tue, Sep 6, 2011 at 8:05 PM, John Clements cleme...@brinckerhoff.org wrote: On Aug 18, 2011, at 5:32 AM, Sam Tobin-Hochstadt wrote: Yes, I understand why this happens. As I see it, there are a few possibilities: 1. The expander should check for duplicates, in some fashion. 2. This idiom is problematic, in the case where `stx' is both the input and used for the syntax properties of the output. 3. Macros may freely duplicate syntax properties. All of these have drawbacks, but (3), which you are suggesting, means either that syntax properties can only be used to specify idempotent information or that the non-idempotent ones need to have some *explicit* means by which equal elements can be distinguished, which must be part of the API of that syntax property. If we think this is how syntax properties ought to work, then we should add something to the documentation making this clear, and we should recognize that it's a limitation. Would syntax-property guards solve this problem? I don't really see how. What are you thinking of? A guard could keep track of duplicates. Keep in mind that syntax-property guards are purely a figment of my imagination. John smime.p7s Description: S/MIME cryptographic signature _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] syntax property duplication
On Wed, Sep 7, 2011 at 1:37 PM, John Clements cleme...@brinckerhoff.org wrote: On Sep 6, 2011, at 8:12 PM, Sam Tobin-Hochstadt wrote: On Tue, Sep 6, 2011 at 8:05 PM, John Clements cleme...@brinckerhoff.org wrote: On Aug 18, 2011, at 5:32 AM, Sam Tobin-Hochstadt wrote: Yes, I understand why this happens. As I see it, there are a few possibilities: 1. The expander should check for duplicates, in some fashion. 2. This idiom is problematic, in the case where `stx' is both the input and used for the syntax properties of the output. 3. Macros may freely duplicate syntax properties. All of these have drawbacks, but (3), which you are suggesting, means either that syntax properties can only be used to specify idempotent information or that the non-idempotent ones need to have some *explicit* means by which equal elements can be distinguished, which must be part of the API of that syntax property. If we think this is how syntax properties ought to work, then we should add something to the documentation making this clear, and we should recognize that it's a limitation. Would syntax-property guards solve this problem? I don't really see how. What are you thinking of? A guard could keep track of duplicates. Keep in mind that syntax-property guards are purely a figment of my imagination. What, in your imagination, is a syntax-property guard? --Carl _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] syntax property duplication
On Sep 7, 2011, at 10:40 AM, Carl Eastlund wrote: On Wed, Sep 7, 2011 at 1:37 PM, John Clements cleme...@brinckerhoff.org wrote: On Sep 6, 2011, at 8:12 PM, Sam Tobin-Hochstadt wrote: On Tue, Sep 6, 2011 at 8:05 PM, John Clements cleme...@brinckerhoff.org wrote: On Aug 18, 2011, at 5:32 AM, Sam Tobin-Hochstadt wrote: Yes, I understand why this happens. As I see it, there are a few possibilities: 1. The expander should check for duplicates, in some fashion. 2. This idiom is problematic, in the case where `stx' is both the input and used for the syntax properties of the output. 3. Macros may freely duplicate syntax properties. All of these have drawbacks, but (3), which you are suggesting, means either that syntax properties can only be used to specify idempotent information or that the non-idempotent ones need to have some *explicit* means by which equal elements can be distinguished, which must be part of the API of that syntax property. If we think this is how syntax properties ought to work, then we should add something to the documentation making this clear, and we should recognize that it's a limitation. Would syntax-property guards solve this problem? I don't really see how. What are you thinking of? A guard could keep track of duplicates. Keep in mind that syntax-property guards are purely a figment of my imagination. What, in your imagination, is a syntax-property guard? I imagine that when the key involved in the property is a special guarded-syntax-property value, then an associated procedure gets to decide (approve/reject, substitute an alternate value?) whether a value should be used. If I understand the problem, the obvious danger in an idea such as this is opening a back door into expansion time. Apologies if I've misunderstood the issue. John smime.p7s Description: S/MIME cryptographic signature _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] New runtime charting for DrDr
Yesterday, Sam Tobin-Hochstadt wrote: Is it readable? How about something more visible? (For both the faded yellow and the faded blue.) -- ((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay: http://barzilay.org/ Maze is Life! _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] New runtime charting for DrDr
On Wed, Sep 7, 2011 at 2:52 PM, Robby Findler ro...@eecs.northwestern.edu wrote: On Wed, Sep 7, 2011 at 9:24 AM, Sam Tobin-Hochstadt sa...@ccs.neu.edu wrote: Now, when you click on a point, the tooltip stays in place (until you click again). This makes it easy to click on the link now in the tooltip, which goes to the file at the selected push #. Ah, thanks. I missed that there was a link in the tooltip. But why not make clicking on the point actually just go to that revision? Sorry, that wasn't clear. The link in the tooltip is new too. I don't want to make just clicking the point jump; that seems like it would make zooming perilous. Also, a less important one, but since you're taking feature requests :), would it be possible to have a mode where you can see the separate lines individually, so that wildly different values that are in two different timing tests don't pollute the scale? That is, it would be nice if I could click something and see only one of the lines of cpu times by itself (I wouldn't want this to be the default tho). I'll probably add something where you can turn off individual data sets. Would that do what you want? -- sam th sa...@ccs.neu.edu _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] New runtime charting for DrDr
On Wed, Sep 7, 2011 at 2:25 PM, Sam Tobin-Hochstadt sa...@ccs.neu.edu wrote: On Wed, Sep 7, 2011 at 2:52 PM, Robby Findler ro...@eecs.northwestern.edu wrote: On Wed, Sep 7, 2011 at 9:24 AM, Sam Tobin-Hochstadt sa...@ccs.neu.edu wrote: Now, when you click on a point, the tooltip stays in place (until you click again). This makes it easy to click on the link now in the tooltip, which goes to the file at the selected push #. Ah, thanks. I missed that there was a link in the tooltip. But why not make clicking on the point actually just go to that revision? Sorry, that wasn't clear. The link in the tooltip is new too. I don't want to make just clicking the point jump; that seems like it would make zooming perilous. Ah. Well, it seems to me that jumping to an interesting revision is more important than zooming, so maybe zooming should require you to hold down shift or control or something. But this is a minor thing. Also, a less important one, but since you're taking feature requests :), would it be possible to have a mode where you can see the separate lines individually, so that wildly different values that are in two different timing tests don't pollute the scale? That is, it would be nice if I could click something and see only one of the lines of cpu times by itself (I wouldn't want this to be the default tho). I'll probably add something where you can turn off individual data sets. Would that do what you want? Yes, thanks (it would re-scale, right?). Robby _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] drRacket Close/Close tab
On Thu, Sep 1, 2011 at 9:55 AM, Robby Findler ro...@eecs.northwestern.edu wrote: All platforms: - changed New Tab to menukey-t - changed Run to menukey-r - changed Replace to menukey-shift-f Sorry for not paying attention to this discussion until after the change, but I just updated and noticed it. I hate this. I have over a decade of muscle memory and I don't see anyway in the preferences to get back to my preferred behavior. It seems like my only option is to make some keybindings file but I can't figure out what to put in it. Can you add some way to go back, or at least give a keybindings file that will be okay for old grognards like me? Jay -- Jay McCarthy j...@cs.byu.edu Assistant Professor / Brigham Young University http://faculty.cs.byu.edu/~jay The glory of God is Intelligence - DC 93 _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] drRacket Close/Close tab
Is replace as menukey-r an important one, or is it really the other two? Robby On Wed, Sep 7, 2011 at 5:04 PM, Jay McCarthy jay.mccar...@gmail.com wrote: On Thu, Sep 1, 2011 at 9:55 AM, Robby Findler ro...@eecs.northwestern.edu wrote: All platforms: - changed New Tab to menukey-t - changed Run to menukey-r - changed Replace to menukey-shift-f Sorry for not paying attention to this discussion until after the change, but I just updated and noticed it. I hate this. I have over a decade of muscle memory and I don't see anyway in the preferences to get back to my preferred behavior. It seems like my only option is to make some keybindings file but I can't figure out what to put in it. Can you add some way to go back, or at least give a keybindings file that will be okay for old grognards like me? Jay -- Jay McCarthy j...@cs.byu.edu Assistant Professor / Brigham Young University http://faculty.cs.byu.edu/~jay The glory of God is Intelligence - DC 93 _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] drRacket Close/Close tab
Nevermind. Stupid question. Robby On Wed, Sep 7, 2011 at 5:16 PM, Robby Findler ro...@eecs.northwestern.edu wrote: Is replace as menukey-r an important one, or is it really the other two? Robby On Wed, Sep 7, 2011 at 5:04 PM, Jay McCarthy jay.mccar...@gmail.com wrote: On Thu, Sep 1, 2011 at 9:55 AM, Robby Findler ro...@eecs.northwestern.edu wrote: All platforms: - changed New Tab to menukey-t - changed Run to menukey-r - changed Replace to menukey-shift-f Sorry for not paying attention to this discussion until after the change, but I just updated and noticed it. I hate this. I have over a decade of muscle memory and I don't see anyway in the preferences to get back to my preferred behavior. It seems like my only option is to make some keybindings file but I can't figure out what to put in it. Can you add some way to go back, or at least give a keybindings file that will be okay for old grognards like me? Jay -- Jay McCarthy j...@cs.byu.edu Assistant Professor / Brigham Young University http://faculty.cs.byu.edu/~jay The glory of God is Intelligence - DC 93 _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] drRacket Close/Close tab
Okay, I've added a pref. Robby _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] New runtime charting for DrDr
On Wed, Sep 7, 2011 at 3:40 PM, Robby Findler ro...@eecs.northwestern.edu wrote: Also, a less important one, but since you're taking feature requests :), would it be possible to have a mode where you can see the separate lines individually, so that wildly different values that are in two different timing tests don't pollute the scale? That is, it would be nice if I could click something and see only one of the lines of cpu times by itself (I wouldn't want this to be the default tho). I'll probably add something where you can turn off individual data sets. Would that do what you want? Yes, thanks (it would re-scale, right?). Now (or rather, once Jay updates the version running on the DrDr machine), you can click the individual entries in the legend to turn them on or off. The legend entries will be printed in italics when not displayed, and it will automatically re-scale. -- sam th sa...@ccs.neu.edu _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] scheme_is_list?
On Wed, Sep 7, 2011 at 6:18 PM, Danny Yoo d...@cs.wpi.edu wrote:
I'm looking at scheme_is_list in src/list.c, and it looks like there's
code that's unreachable, unless I'm reading it wrong?! The body is:
int scheme_is_list(Scheme_Object *obj1)
{
Scheme_Object *obj2;
int flags;
if (SCHEME_PAIRP(obj1)) {
flags = SCHEME_PAIR_FLAGS(obj1);
if (flags PAIR_FLAG_MASK) {
if (flags PAIR_IS_LIST)
return 1;
else
return 0;
}
Notice there is no else here. So if you would go there, then you'd
drop through outside of the whole if
} else if (SCHEME_NULLP(obj1))
return 1;
else
return 0;
because the above if is one C expression
And so you'd start running down here
obj2 = obj1;
/** more code here */
}
Isn't all the code starting from 'obj2 = obj1' unreachable?
_
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--
Jay McCarthy j...@cs.byu.edu
Assistant Professor / Brigham Young University
http://faculty.cs.byu.edu/~jay
The glory of God is Intelligence - DC 93
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Re: [racket-dev] scheme_is_list?
At Wed, 7 Sep 2011 20:18:44 -0400, Danny Yoo wrote:
I'm looking at scheme_is_list in src/list.c, and it looks like there's
code that's unreachable, unless I'm reading it wrong?! The body is:
int scheme_is_list(Scheme_Object *obj1)
{
Scheme_Object *obj2;
int flags;
if (SCHEME_PAIRP(obj1)) {
flags = SCHEME_PAIR_FLAGS(obj1);
if (flags PAIR_FLAG_MASK) {
if (flags PAIR_IS_LIST)
return 1;
else
return 0;
}
} else if (SCHEME_NULLP(obj1))
return 1;
else
return 0;
obj2 = obj1;
/** more code here */
}
Isn't all the code starting from 'obj2 = obj1' unreachable?
No --- the first `if' branch doesn't always return, since its returns
are protected by another `if'.
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Re: [racket-dev] scheme_is_list?
Isn't all the code starting from 'obj2 = obj1' unreachable? No --- the first `if' branch doesn't always return, since its returns are protected by another `if'. Gah. Ok, thanks for the correction. I should stop coding tonight; I'm not reading things clearly. :) _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] drRacket Close/Close tab
I will say that my muscles seem to be like Jay's. BUT, I must be much younger. A day of programming and I open only 5 tabs instead of 10 when I want to run a buffer :-) _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] drRacket Close/Close tab
I keep being confused and afraid when I run my program it gets erased. ;) Robby On Wed, Sep 7, 2011 at 7:26 PM, Matthias Felleisen matth...@ccs.neu.edu wrote: I will say that my muscles seem to be like Jay's. BUT, I must be much younger. A day of programming and I open only 5 tabs instead of 10 when I want to run a buffer :-) _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] New runtime charting for DrDr
Thanks. Is it possible to make it remember the setting? Specifically, when go from this page: http://drdr.racket-lang.org/23400/collects/tests/drracket/memory-log.rkt to this one: http://drdr.racket-lang.org/23400/ to see what the commit was, and then I go back, I lose the settings. Also, can you make clicking on the little boxes in teh legend do the same thing as clicking the words? Robby PS: I see that some of the improvements that you did to speed up loading of Typed Racket also improved the memory footprint of DrRacket's startup. So thanks! On Wed, Sep 7, 2011 at 5:39 PM, Sam Tobin-Hochstadt sa...@ccs.neu.edu wrote: On Wed, Sep 7, 2011 at 3:40 PM, Robby Findler ro...@eecs.northwestern.edu wrote: Also, a less important one, but since you're taking feature requests :), would it be possible to have a mode where you can see the separate lines individually, so that wildly different values that are in two different timing tests don't pollute the scale? That is, it would be nice if I could click something and see only one of the lines of cpu times by itself (I wouldn't want this to be the default tho). I'll probably add something where you can turn off individual data sets. Would that do what you want? Yes, thanks (it would re-scale, right?). Now (or rather, once Jay updates the version running on the DrDr machine), you can click the individual entries in the legend to turn them on or off. The legend entries will be printed in italics when not displayed, and it will automatically re-scale. -- sam th sa...@ccs.neu.edu _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] New runtime charting for DrDr
On Wed, Sep 7, 2011 at 8:46 PM, Robby Findler ro...@eecs.northwestern.edu wrote: Thanks. Is it possible to make it remember the setting? Specifically, when go from this page: http://drdr.racket-lang.org/23400/collects/tests/drracket/memory-log.rkt to this one: http://drdr.racket-lang.org/23400/ to see what the commit was, and then I go back, I lose the settings. I'll see what I can do. I just use tabs as a workaround, though. Also, can you make clicking on the little boxes in teh legend do the same thing as clicking the words? I wanted to do that, but I haven't figured out how yet. The library gives me a lot of control over the labels, but not over the boxes. On Wed, Sep 7, 2011 at 5:39 PM, Sam Tobin-Hochstadt sa...@ccs.neu.edu wrote: On Wed, Sep 7, 2011 at 3:40 PM, Robby Findler ro...@eecs.northwestern.edu wrote: Also, a less important one, but since you're taking feature requests :), would it be possible to have a mode where you can see the separate lines individually, so that wildly different values that are in two different timing tests don't pollute the scale? That is, it would be nice if I could click something and see only one of the lines of cpu times by itself (I wouldn't want this to be the default tho). I'll probably add something where you can turn off individual data sets. Would that do what you want? Yes, thanks (it would re-scale, right?). Now (or rather, once Jay updates the version running on the DrDr machine), you can click the individual entries in the legend to turn them on or off. The legend entries will be printed in italics when not displayed, and it will automatically re-scale. -- sam th sa...@ccs.neu.edu -- sam th sa...@ccs.neu.edu _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] drRacket Close/Close tab
Three hours ago, Robby Findler wrote: Okay, I've added a pref. *Sigh* I think that adding preferences is a bad direction, especially for something that could be covered by a key bindings file. -- ((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay: http://barzilay.org/ Maze is Life! _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] drRacket Close/Close tab
I've had a suggestion to undo the pref addition and instead add the example in the docs. Jay: any objection to that? -- ((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay: http://barzilay.org/ Maze is Life! _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] drRacket Close/Close tab
I think that's a good idea. I found the docs very hard to understand how to do this in the keybindings file. Jay On Wed, Sep 7, 2011 at 8:17 PM, Eli Barzilay e...@barzilay.org wrote: I've had a suggestion to undo the pref addition and instead add the example in the docs. Jay: any objection to that? -- ((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay: http://barzilay.org/ Maze is Life! _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev -- Jay McCarthy j...@cs.byu.edu Assistant Professor / Brigham Young University http://faculty.cs.byu.edu/~jay The glory of God is Intelligence - DC 93 _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] drRacket Close/Close tab
The keybindings file docs assume you know a lot about the GUI system and the organization of DrRacket, unfortunately. It desperately needs some Guide-style work. Robby On Wed, Sep 7, 2011 at 9:31 PM, Jay McCarthy jay.mccar...@gmail.com wrote: I think that's a good idea. I found the docs very hard to understand how to do this in the keybindings file. Jay On Wed, Sep 7, 2011 at 8:17 PM, Eli Barzilay e...@barzilay.org wrote: I've had a suggestion to undo the pref addition and instead add the example in the docs. Jay: any objection to that? -- ((lambda (x) (x x)) (lambda (x) (x x))) Eli Barzilay: http://barzilay.org/ Maze is Life! _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev -- Jay McCarthy j...@cs.byu.edu Assistant Professor / Brigham Young University http://faculty.cs.byu.edu/~jay The glory of God is Intelligence - DC 93 _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
Re: [racket-dev] online syntax-coloring for planet packages not working?
I've pushed a fix for at least that (planet packages will still fail to install tho). Please let me know if you spot more problems. Thanks, Robby On Wed, Sep 7, 2011 at 6:07 PM, John Clements cleme...@brinckerhoff.org wrote: It appears to me that online syntax-coloring doesn't work for files that are part of a PLaneT-linked package. That's a known issue, right? The Check-Syntax button is red, with a message about an inability to open .LOCKHARD-LINKS with read-write access. John _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
[racket-dev] Errors with Racket on OS X 10.7 64bit
I regularly build racket from HEAD on OS X with no problems, but tonight I decided to try the 64 bit version and couldn't get it to compile. The error I got was: Undefined symbols for architecture x86_64: _iconv_close, referenced from: _close_converter in libracket.a(string.o) _scheme_close_converter in libracket.a(string.o) _do_convert in libracket.a(string.o) _byte_string_close_converter in libracket.a(string.o) _string_to_from_locale in libracket.a(string.o) _iconv_open, referenced from: _do_convert in libracket.a(string.o) _string_to_from_locale in libracket.a(string.o) _scheme_open_converter in libracket.a(string.o) _iconv, referenced from: _do_convert in libracket.a(string.o) ld: symbol(s) not found for architecture x86_64 collect2: ld returned 1 exit status make[4]: *** [Racket.framework/Versions/5.1.3.6/Racket] Error 1 The command I ran to install it was mkdir build cd build ../configure --disable-docs --enable-mac64 make -j2 make install -j2 Is there something I am missing, or is it just broken currently? -Eric Full output is attached: dev-out Description: Binary data _ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
