http://blog.gmane.org/gmane.lisp.scheme.gambit hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://comments.gmane.org/gmane.lisp.scheme.gambit/6730 <pre>Hi! I've just released gambit-objc 0.1.0. This is the "it has the basics, and the implementation is complete enough for real projects" release. * It gives you access to Objective-C class objects. The easiest way is: (import-classes (NSString NSDictionary)) after which, you can refer to them. * It dynamically dispatches Objective-C methods: (: NSString stringWithUTF8String: "hello, world") * It supports marshaling of native Scheme objects to C/Objective-C types for parameter and return values, including structures, selectors, all integral types, and UTF8 strings. It wraps Objective-C objects with foreign. * It has a objc-repl, an extended version of gsi which supports square-brace syntax, like so: [NSString stringWithUTF8String: "Hello, world!"] You'll find a minimal sample Cocoa app in the distribution as well. There are many cool things that can be added. I'd love to collaborate, help people use it, and otherwise enable its adoption. I'm really happy with how elegant it ended up (aft</pre> Jason Felice 2013-05-18T17:12:40 http://comments.gmane.org/gmane.lisp.scheme.gambit/6725 <pre>I've often thought that languages with garbage collectors should have some means for the garbage collectors to communicate with one another. </pre> Hendrik Boom 2013-05-11T02:17:01 http://comments.gmane.org/gmane.lisp.scheme.gambit/6724 <pre>Are any GUI toolkits a good fit with Gambit? At the moment I only need a text interface, but the text would be change all over the screen (or window). In the 80's I'd use cursor controls on a VT100, but I suspect I can do better nowadays. In the long run I'll probably want some menus and images. Currently using Gambit on Linux. Portability to other platforms is not necessary, but would be nice. </pre> Hendrik Boom 2013-05-10T23:58:48 http://comments.gmane.org/gmane.lisp.scheme.gambit/6720 <pre>If you are doing a project in Gambit Scheme (or any other Lisp), then you might be interested in this contest, with many cash prizes: http://lispinsummerprojects.org/welcome Marc </pre> Marc Feeley 2013-05-09T04:16:46 http://comments.gmane.org/gmane.lisp.scheme.gambit/6718 <pre>Hi. I've recently installed gambit on my android phone ( https://play.google.com/store/apps/details?id=org.keithflower.gambit ) and it seems to work fine. I would now like to know if it's possible to create from this gambit an UI for the apps I want to develop? I'm not looking at much, I'd just like to be able to print some text, and then to print a keypad on which to feed data. Something as simple as http://img.softpile.com/mobile/screenshots/38/2012042621504410.png So, is it possible? That webview thing seems to be available, and an old comment at http://comments.gmane.org/gmane.lisp.scheme.gambit/5285 seems to say that UIs could be written with it, but I don't really see how. Assuming I have a form, where do I post to? If there's another way to run apps written in Gambit and that use a GUI, I'd be interested to hear about it. Cheers, P! -- Français, English, 日本語, 한국어 _______________________________________________ Gambit-list mailing list Gambit-list&lt; at &gt;iro.umontreal.ca https://webmail.i</pre> Adrien Piérard 2013-05-03T03:02:59 http://comments.gmane.org/gmane.lisp.scheme.gambit/6715 <pre>Hi Marc! Rarely I get an error that Gambit just stops, while eating up all the CPU core. It's so rare that I don't consider it a problem, though I'd be happy to see it gone of course. I believe 50% of the time it happens within 5 seconds after Gambit started and thread-start! was invoked 1-5 times. I ran into this error now, saw it something like four times in 6mo. This is on Gambit gsc 4.6.6 on AMD64, compiled from source with --enable-single-host and some more. The Gambit session is running a couple of Gambit threads, absolutely nothing exotic going on. Had it in a GDB session so could reliably "profile" the error, output from that GDB session below. Saved the core file for later reference too. It's in _thread.scm , and from what I can see it's in |##thread-effective-priority-downgrade!|'s definition. What it looks like to me is that by some reason we've got a self-referencing btq-deq-next chain element, that keeps it reiterating forever. I base this on that ___r1 and ___r3 and ___r4 remain con</pre> Mikael 2013-05-03T00:05:13 http://comments.gmane.org/gmane.lisp.scheme.gambit/6710 <pre>Gambit-C v4.6.9 is now available. Changelog: https://github.com/feeley/gambit/commits The sources and prebuilt distributions can be obtained from the Gambit web site by visiting one of the following links. sources: http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/source/gambc-v4_6_9.tgz (for typical users) http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/source/gambc-v4_6_9-devel.tgz (for developers) prebuilt: http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/prebuilt/gambc-v4_6_9-macosx-intel32.dmg http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/prebuilt/gambc-v4_6_9-macosx-intel64.dmg http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/prebuilt/gambc-v4_6_9-windows-mingw32.exe http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/prebuilt/gambc-v4_6_9-windows-mingw64.exe http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/prebuilt/gambc-v4_6_9-windows-visualc32.exe http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/prebuilt/gambc-v4_6_9</pre> Logiciel Gambit 2013-05-02T16:06:12 http://comments.gmane.org/gmane.lisp.scheme.gambit/6709 <pre>Gambit v4.6.8 was mistakenly compiled to use the "poll" system call instead of "select". Unfortunately, on OS X the poll system call does not support ttys. Reading a tty will never block. This causes an idle gsi to use 100% CPU. I'll be releasing v4.6.9 ASAP. Marc </pre> Marc Feeley 2013-05-02T13:17:34 http://comments.gmane.org/gmane.lisp.scheme.gambit/6706 <pre>I'm running a gambit program from a file using gsi, initiated from an interactive shell provided by my window manager on Debian wheezy.. The program uses read-char and peek-char to read characters from standard input, which appears to be the terminal. but the test for end of file, (eof-object? c), seems never to return true,, even if I type a control-D, which is the usual Linux way to signal end of file from a terminal. How should I enter an end-of-file on the terminal instead? </pre> Hendrik Boom 2013-05-02T12:35:32 http://comments.gmane.org/gmane.lisp.scheme.gambit/6701 <pre>"1e-4" "1/10000" The same with other similar values such as 0.00085 . _______________________________________________ Gambit-list mailing list Gambit-list&lt; at &gt;iro.umontreal.ca https://webmail.iro.umontreal.ca/mailman/listinfo/gambit-list </pre> Mikael More 2013-05-01T12:12:49 http://comments.gmane.org/gmane.lisp.scheme.gambit/6697 <pre>I haven't been able to separate the code from my repo and make it still break, but I found what I imagine is an inlining bug when --enable-auto-force is enabled. My repo: https://github.com/maitria/scheme-stuff.git $ make $ gsi 1 2&gt; Change lib/iteration.scm:14 and replace end-position? with null? and repeat: *** ERROR IN iteration#for-each -- (Argument 1) PAIR expected (car '()) 1&gt; The definition of end-position? is: (define end-position? null?) Adding an extraneous force call -- (loop (force (cdr position))) -- will prevent the problem. _______________________________________________ Gambit-list mailing list Gambit-list&lt; at &gt;iro.umontreal.ca https://webmail.iro.umontreal.ca/mailman/listinfo/gambit-list </pre> Jason Felice 2013-05-01T00:36:21 http://comments.gmane.org/gmane.lisp.scheme.gambit/6696 <pre>Hi I'm not able to build Gambit with C++ support, having problem with 4.6.7 and 4.6.8. Building on ubuntu 32bit. Full log is attached but here are the relevant parts: gcc 4.7.2 Both configure commands produce same error: ./configure --enable-single-host --enable-cplusplus --enable-c-opt ./configure --enable-single-host --enable-cplusplus g++ -Wno-unused -Wno-write-strings -O2 -fno-math-errno -fschedule-insns2 -fno-trapping-math -fno-strict-aliasing -fwrapv -fomit-frame-pointer -fPIC -fno-common -mieee-fp -I"../include" -c -o "os_io.o" -I. -DHAVE_CONFIG_H -D___GAMBCDIR="\"/usr/local/Gambit-C\"" -D___SYS_TYPE_CPU="\"i686\"" -D___SYS_TYPE_VENDOR="\"pc\"" -D___SYS_TYPE_OS="\"linux-gnu\"" -D___CONFIGURE_COMMAND="\"./configure '--enable-single-host' '--enable-c-opt' '--enable-cplusplus'"\" -D___OBJ_EXTENSION="\".o\"" -D___EXE_EXTENSION="\"\"" -D___BAT_EXTENSION="\"\"" -D___PRIMAL os_io.c -D___LIBRARY In file included from os_base.h:8:0, from os_io.c:14: os.h:1113:0: warning: "__USE_LARGE</pre> Victor Boon 2013-04-30T17:52:04 http://comments.gmane.org/gmane.lisp.scheme.gambit/6684 <pre>Is it possible to build only certain parts of Gambit, eg. libgambc? The reason I ask is that I'm following Sean Chapel's Android example project on GitHub [1] and have to run `make' which breaks, but only after building libgambc, which is all I need. Happy coincidence. If the build order ever changes this fragile solution will stop working, so it would be nice to be able to specify libgambc as the `make' target ie. `make libgambc' or similar. Also, Sean's example doesn't first do a `make bootstrap' and `make bootclean' to remove stale .c files. Not sure if this would be possible anyway since `./configure' would have to be run again after `make bootclean' with `--host=arm-linux-eabi'. Anyone? </pre> Ralph Möritz 2013-04-30T14:04:47 http://comments.gmane.org/gmane.lisp.scheme.gambit/6682 <pre>Gambit-C v4.6.8 is now available. Changelog: https://github.com/feeley/gambit/commits The sources and prebuilt distributions can be obtained from the Gambit web site by visiting one of the following links. sources: http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/source/gambc-v4_6_8.tgz (for typical users) http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/source/gambc-v4_6_8-devel.tgz (for developers) prebuilt: http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/prebuilt/gambc-v4_6_8-macosx-intel32.dmg http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/prebuilt/gambc-v4_6_8-macosx-intel64.dmg http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/prebuilt/gambc-v4_6_8-windows-mingw32.exe http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/prebuilt/gambc-v4_6_8-windows-mingw64.exe http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/prebuilt/gambc-v4_6_8-windows-visualc32.exe http://www.iro.umontreal.ca/~gambit/download/gambit/v4.6/prebuilt/gambc-v4_6_8</pre> Logiciel Gambit 2013-04-30T12:44:50 http://comments.gmane.org/gmane.lisp.scheme.gambit/6667 <pre>Promises as specified in the Scheme spec are not terribly useful... but I was thinking that I could make a much cleaner implementation of lazy sequences and other things given a Scheme runtime which automatically forced promises when the promise is operated on as a value. I was wondering if anyone's thought about doing this. Also, if it's really as hard as making every primitive (except, course, promise?, promise-forced? and friends) check and force every parameter, or if there are any neat implementation tricks, especially if there's something which can be used in gambit (like error-handler, but that seems gross. Also, incomplete and messy). -Jason _______________________________________________ Gambit-list mailing list Gambit-list&lt; at &gt;iro.umontreal.ca https://webmail.iro.umontreal.ca/mailman/listinfo/gambit-list </pre> Jason Felice 2013-04-29T17:48:13 http://comments.gmane.org/gmane.lisp.scheme.gambit/6664 <pre>hello, I have a weird error message and I could not understand what's the source of this error and how to fix it. A simple example : glfw-ffi.scm : (c-declare "#include \"GL/glfw.h\"") (define glfwInit (c-lambda () int "glfwInit")) compilation : $ export GAMBC_CC_VERBOSE=yes $ gsc -ld-options "-L/usr/local/lib -lglfw" glfw-ffi.scm gcc -Wno-unused -Wno-write-strings -O1 -fno-math-errno -fschedule-insns2 -fno-trapping-math -fno-strict-aliasing -fwrapv -fomit-frame-pointer -fno-move-loop-invariants -fPIC -fno-common -mieee-fp -rdynamic -shared -D___SINGLE_HOST -D___DYNAMIC -I"/usr/local/Gambit-C/include" -o "glfw-ffi.o2" glfw-ffi.c -L/usr/local/lib -lglfw $ gsc Gambit v4.6.7 Unable to find pthread_mutexattr_setkind_np versioned symbol. Aborting. Abort(coredump) $ Anyone see this problem with pthread ? thanks a lot cyrille _______________________________________________ Gambit-list mailing list Gambit-list&lt; at &gt;iro.umontreal.ca https://webmail.iro.umontreal.ca/mailman/listinfo/gambit-list </pre> Cyrille Duret 2013-04-28T18:01:21 http://comments.gmane.org/gmane.lisp.scheme.gambit/6661 <pre>1. Is there a reason (something to be wary of) why gambit is set up in the view controller rather than in main()? 2. Is the ___enable_interrupts()/___disable_interrupts() currently only used for communicating events to gambit? I guess what I'm wondering, in other words, is whether there would be some kind of problem with running gambit on the main thread, invoking (c-define ...) functions, if gambit will never wait on a port? -Jason _______________________________________________ Gambit-list mailing list Gambit-list&lt; at &gt;iro.umontreal.ca https://webmail.iro.umontreal.ca/mailman/listinfo/gambit-list </pre> Jason Felice 2013-04-26T15:19:53 http://comments.gmane.org/gmane.lisp.scheme.gambit/6658 <pre>Hi, I just skimmed through the Termite paper - it looks awesome. Looking at the commit log of the repo, however, reveals the code hasn't been touched since 2009. Yikes! What a pity, it seems like such an interesting project. Sorry if this seems like a pointless e-mail. Cheers, Ralph </pre> Ralph Möritz 2013-04-26T06:25:47 http://comments.gmane.org/gmane.lisp.scheme.gambit/6645 <pre>Dear list, I was keeping this question in the back of my mind for several years so taking the occasion to reflect it now: Here follows the result of a simple benchmark of (exact-&gt;inexact n) and (exact-&gt;inexact (floor n)) where n is a flonum, fixnum or bignum integer, or rational. The code was executed in compiled form, with both safe and interrupts-enabled set and without any consideration to C compiler flags beyond -O1 , to reflect the environment of a typical application (not for instance a specialized number crunching environment). I remember a conversation on this topic like ~4y ago but don't remember any conclusion from it. Looking at these numbers, I think they're great and all you can ask for, with two exceptions, being to-integer conversion of a flonum or integer bignum. To get a better idea I experimented with heap size and live percent setting with those two, and got about the same results. If you are aware of any definition of |-&gt;integer| that would perform much better, please feel free t</pre> Mikael 2013-04-24T19:24:02 http://comments.gmane.org/gmane.lisp.scheme.gambit/6635 <pre>Errors thrown from scheme code embedded in an iOS app don't get displayed anywhere. Instead, the the program just hangs. I see the same behavior in the example GambitREPL app. If I add in an error (for example, calling (cons 1), wrong is the number of arguments) to the program.scm file, it will hang on launch, and the error message won't be displayed in stdout (which is ideally where I'd like it to go). I'm using the following debug_settings: debug_settings = (debug_settings &amp; ~___DEBUG_SETTINGS_UNCAUGHT_MASK) | (___DEBUG_SETTINGS_UNCAUGHT_ALL &lt;&lt; ___DEBUG_SETTINGS_UNCAUGHT_SHIFT); debug_settings = (debug_settings &amp; ~___DEBUG_SETTINGS_ERROR_MASK) | (___DEBUG_SETTINGS_ERROR_REPL &lt;&lt; ___DEBUG_SETTINGS_ERROR_SHIFT); but I've also tried debug_settings = (debug_settings &amp; ~___DEBUG_SETTINGS_REPL_MASK) | (___DEBUG_SETTINGS_REPL_STDIO &lt;&lt; ___DEBUG_SETTINGS_REPL_SHIFT); and I've also tried wrapping my scheme calls in ___BEGIN_TRY ___END_TRY I apologi</pre> Axis Sivitz 2013-04-23T21:25:33 http://comments.gmane.org/gmane.lisp.scheme.gambit/6632 <pre>Hi I have this simple numerical algorithm that computes an integral. I compile it with -prelude "(declare (standard-bindings) (block) (not safe))" -cc-options "-O4". All functions are tail-call optimized. The very last line of generated by ##gc-report-set! is *** GC: 0 ms, 18.7G alloc, 1.52M heap, 45.3K live (3% 22896+23496) The live area is consistently 45K throughout the entire execution. Timing report indicates that 18% is spent on GC: 7904 ms real time 7784 ms cpu time (3684 user, 4100 system) 13048 collections accounting for 1404 ms real time (584 user, 724 system) 20078526600 bytes allocated 480 minor faults no major faults Besides tail-calls, what else can i do to reduce GC? _______________________________________________ Gambit-list mailing list Gambit-list&lt; at &gt;iro.umontreal.ca https://webmail.iro.umontreal.ca/mailman/listinfo/gambit-list </pre> Zhen Shen 2013-04-23T13:50:42 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.lisp.scheme.gambit