Pike-devel

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2 participants
3046 discussions

Threading in callbacks
by Stephen R. van den Berg 05 Jun '12

05 Jun '12

Suppose my libusb does a callback to the C callback function I provided, which, in turn, will want to run a Pike callback function the user supplied. What if the usblibrary decides to call my callback during a time where threads are allowed? Is there any way for me to detect this? What to do about this? Conditionally run something like: static void usbcallback(...) { if(threadsareallowed) THREADS_DISALLOW(); -- Run the Pike callback function. -- if(threadsareallowed) THREADS_ALLOW(); } Is this even going to work? -- Stephen. "There are 10 types of people in the world. Those who understand binary and those who do not."

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cmod parser and two methods with the same name
by Stephen R. van den Berg 04 Jun '12

04 Jun '12

It throws the parser into an infinite recursion, and results is rather cryptic error messages. It's not high priority, but if anyone knows his way around that thing, it might be worth checking for this. -- Stephen. "Very funny, Mr. Scott. Now beam down my clothes!"

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libusb and autoconf
by Stephen R. van den Berg 03 Jun '12

03 Jun '12

Just in case someone happens to be working on it, I'm in the process of implementing a native interface to libusb-1.0 from within Pike. The sad part is that actually programming the interface is not that much work, generating proper configure.in files *is* however a big PITA. Has anyone ever considered using cmake or jam instead of autoconf ? I'm not saying I know it to be better, but it just seems like it can't get any worse either (besides simplicity, it definitely could be faster, the current configure business is a resource hog, timewise). -- Stephen. "Always remember that you are unique. Just like everyone else."

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strict type regression
by Martin Nilsson (Opera Mini - AFK!) ＠ Pike (-) developers forum 16 May '12

16 May '12

I've started getting /home/nilsson/pike/lib/modules/String.pmod/module.pmod:98: Warning: An expression of type string | int | !mixed cannot be assigned to a variable of type int. after the changes in there. It should be possible to work out that int sz = min(@map(strs, sizeof)); is always the correct type.

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pike_frame->fun = FUNCTION_BUILTIN
by Arne Goedeke 13 May '12

13 May '12

In INIT, EXIT and some gc callbacks the fun in Pike_fp is set to FUNCTION_BUILTIN. there are some places in the code (e.g. ADT.List()->_get_iterator) where ->fun is used in INHERIT_FROM_INT et al, which segfaults (except with PIKE_DEBUG). I am not sure where to fix this. Should the *_FROM_INT macros check for FUNCTION_BUILTIN or is this better to be handled in the individual INIT/EXIT methods ? does anyone object to making ADT.Stack and ADT.Queue inherit ADT.List? arne

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Pike 7.8 Beta
by H. William Welliver III 13 May '12

13 May '12

I've prepared a new 7.8 test release for consideration. Please feel free to download and test. http://pike.ida.liu.se/download/pub/pike/beta/7.8.680/ I am not aware of any show stoppers in this release; if none are found in the next week, this will become the new stable 7.8 release. As always, please feel free to get in touch with any comments or concerns. Best, Bill bill(a)welliver.org

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Visualization of inherit-graphs
by Henrik Grubbstr�m (Lysator) ＠ Pike (-) developers forum 11 May '12

11 May '12

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Metafunctions
by Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) ＠ Pike (-) developers forum 27 Apr '12

27 Apr '12

I've got a bit of a problem with the `->() lfun. To illustrate, consider the following class: ---8<-- class Base { mixed `->(string x) { return (x == "add_one" && lambda(int x) { return x+1; }) || (x == "add_two" && lambda(int x) { return x+2; }); } } ---8<--- I now have a class which allows me to do Base()->add_one(7) to get 8, and Base()->add_two(7) to get 9. So far so good. Now, let's try to specialize this class: ---8<--- class Sub { inherit Base; string add_two(int x) { return x+"two"; } } ---8<--- FAIL! Sub()->add_two(7) still returns 9. And what's more, even if I try to add something with a name that doesn't exist in Base, I still can't access it outside of Sub. Is there a way around this? I tried using `::->() as a fallback in `->(), but it didn't have the desired effect.

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Pike 7.8 beta: feedback?
by Bill Welliver 24 Apr '12

24 Apr '12

So, 7.8.680 has been out and about for a week, and despite the fact that I checked a fix in after I made that build, I'm inclined to say .680 should become an official release. Does anyone have any feedback? Go? No go? Bill

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Segfault
by Martin Nilsson (Opera Mini - AFK!) ＠ Pike (-) developers forum 23 Apr '12

23 Apr '12

I get this crash when trying to build pike with dmalloc. #### Making dynamic: post_modules/GTK2 make[2]: Entering directory `/home/nilsson/pike/dmalloc/post_modules/GTK2' Makefile:576: warning: overriding commands for target `depend' Makefile:332: warning: ignoring old commands for target `depend' /home/nilsson/pike/dmalloc/pike -DNOT_INSTALLED -DPRECOMPILED_SEARCH_MORE -m/home/nilsson/pike/dmalloc/master.pike /home/nilsson/pike/src/post_modules/GTK2/build_pgtk.pike --source='/home/nilsson/pike/src/post_modules/GTK2/source/' \ /home/nilsson/pike/src/post_modules/GTK2/output/few.pike make[2]: *** [compile1] Segmentation fault make[2]: Leaving directory `/home/nilsson/pike/dmalloc/post_modules/GTK2' make[1]: *** [GTK2] Error 1 make[1]: Leaving directory `/home/nilsson/pike/dmalloc/post_modules' make: *** [post_module_objects] Error 1 And it looks like it is in the startup things bail out. nilsson@riaa:~/pike/dmalloc$ gdb pike GNU gdb (Ubuntu/Linaro 7.3-0ubuntu2) 7.3-2011.08 Copyright (C) 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". For bug reporting instructions, please see: <http://bugs.launchpad.net/gdb-linaro/>... Reading symbols from /home/nilsson/pike/dmalloc/pike...done. (gdb) run -DNOT_INSTALLED -DPRECOMPILED_SEARCH_MORE -m/home/nilsson/pike/dmalloc/master.pike Starting program: /home/nilsson/pike/dmalloc/pike -DNOT_INSTALLED -DPRECOMPILED_SEARCH_MORE -m/home/nilsson/pike/dmalloc/master.pike [Thread debugging using libthread_db enabled] Program received signal SIGSEGV, Segmentation fault. parent_clone_object (p=0x0, parent=0x2b72a60, parent_identifier=3, args=0) at /home/nilsson/pike/src/object.c:410 410 if(!(p->flags & PROGRAM_PASS_1_DONE)) (gdb) bt #0 parent_clone_object (p=0x0, parent=0x2b72a60, parent_identifier=3, args=0) at /home/nilsson/pike/src/object.c:410 #1 0x00000000005b1569 in compile_compiler () at /home/nilsson/pike/src/program.c:9751 #2 init_program () at /home/nilsson/pike/src/program.c:10304 #3 0x0000000000544245 in init_pike_runtime (exit_cb=0x4127e0 <exit@plt>) at /home/nilsson/pike/src/pike_embed.c:393 #4 0x0000000000413fb4 in main (argc=4, argv=0x7fffffffe078) at /home/nilsson/pike/src/main.c:609

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