Pike-devel November 2016

pike-devel@lists.lysator.liu.se

9 participants
56 discussions

pike_frame->fun = FUNCTION_BUILTIN
by Arne Goedeke 16 Apr '26

16 Apr '26

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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managing comport settings in linux
by Henrik Grubbstr�m (Lysator) ＠ Pike (-) developers forum 09 Apr '26

09 Apr '26

Not a good idea; the design philosophy of Pike is that Pike-level code should never be able to cause memory corruption at C-level. With ioctls there's no way to know what data a specific ioctl wants without reading the documentation for that specific ioctl for that specific OS. ioctls and fcntls are a way for device handlers to hook in APIs that aren't standard across all filedescriptors. / Henrik Grubbström (Lysator) Previous text: >2004-08-17 13:32: >Subject: managing comport settings in linux >-------------------------------------------------------------------- >What would be nice, is a way to define ioctl methods in >Pike. Perhaps something like > >object i = Stdio.IOCTL(4242 /* request_id */ ); >i->add_int_parameter(); >i->add_string_parameter(); >i->set_return_type(STRING); > >string ret = i(fd, 1, "somestring"); > > >That ought to be possible, or..? > > / Marcus Agehall (PacketFront) >

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Re: Playing music using pike and SDL.
by Martin Nilsson (lvl 60) ＠ Pike (-) developers forum 13 Mar '26

13 Mar '26

Were you not able to get any C code to play through SDL either? Does your SDL library have a mixer compiled in it (I think it is optional)?

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full MySQL 4.x support. or pike roadmap
by thomas.gusenleitner＠com-bet.com ＠ Pike developers forum 01 Mar '26

01 Mar '26

HI to all! mysql 4.x support works only with a mysql CFLAGS=-DUSE_OLD_FUNCTIONS is this correct ? are there plans to make a full 4.x support ? bye, thomas

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Bad function identifier on 8.1
by Stephen R. van den Berg 29 May '17

29 May '17

While trying to use Pike 8.1, I consistently get the following on stderr whenever I run pike: /usr/local/pike/8.1.6/lib/modules/Crypto.pmod/Random.pmod.o:-: Warning: Decode failed: Error while decoding program(/usr/local/pike/8.1.6/lib/modules/Crypto.pmod/Random.pmod:23): Bad function identifier offset for random_string:function(int(0..2147483647) : string(8bit)): 3 != 0 It's not immediately obvious to me how to fix this. Anyone? Or am I the only one seeing this? -- Stephen.

2 4

Protocols.SMTP.ClientHelper()->rfc2822date_time()
by Chris Angelico 25 Jan '17

25 Jan '17

What exactly is this function, and how does it differ from Calendar.Time.format_smtp()? The docs for the latter state that it's "as seen in Date: headers in mails", which seems to be the same purpose. They appear to give the same output. Should the ClientHelper function have a docs reference to format_smtp? Is there a reason to use ClientHelper instead? ChrisA

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Optimised map
by Martin Karlgren 09 Jan '17

09 Jan '17

Hi, Having realised the benefits of functional programming, I’ve been quite annoyed by the rumour of how expensive function calls are in Pike. I decided to look into f_map and could see how much seemingly unnecessary work it does when it calls apply_svalue once for each entry in the array – it should be possible to reuse the pike_frame if it’s about to be thrown away after the function call (if it has other refs on the other hand, it can’t be reused – it’s probably used as a scope in some other frame). I’ve pushed my optimised variant in marty/optimised_map – it seems to work quite well and provides a major speedup. In fact, it’s a bit faster than the corresponding foreach variant. I haven’t verified correctness in various corner cases, and some input on whether it’s correct to do the things init_frame_reuse_context does only once before multiple function calls would be nice too. The *_reuse_context stuff in interpret.c should be applicable wherever the same svalue is applied repeatedly with the same number of arguments (I haven’t looked for it outside of f_map really). What do you all think? Good idea or did I overlook something? Without optimisation: map: 1.660797 array index: 1.335115 array append: 1.17917 With optimisation: map: 0.877659 array index: 1.351158 array append: 1.189812 Test program: int main() { array base = allocate(10000000, 1); float gmap = gauge { array res = map (base, lambda(int i) { return i + 2; }); }; float garrayindex = gauge { array res = allocate(sizeof(base)); foreach (base; int idx; int i) { res[i] = i + 2; } }; float garrayappend = gauge { array res = ({}); foreach (base, int i) { res += ({ i + 2 }); } }; werror ("map: %O\n", gmap); werror ("array index: %O\n", garrayindex); werror ("array append: %O\n", garrayappend); } /Marty

4 12

Segfault generating src/post_modules/GL/auto.c on PowerPC
by Magnus Holmgren, Millnet/Lysator/Debian/Mensa ＠ Pike developers forum 06 Dec '16

06 Dec '16

I noticed that Debian package builds of both 7.8(.866-7) and 8.0(.358-1) have recently started failing on the powerpc architecture. https://buildd.debian.org/status/fetch.php?pkg=pike8.0&arch=powerpc&ver=8.0… /«PKGBUILDDIR»/build/linux-3.16.0-4-powerpc64-ppc/pike -DNOT_INSTALLED -DPRECOMPILED_SEARCH_MORE -m/«PKGBUILDDIR»/build/linux-3.16.0-4-powerpc64-ppc/master.pike /«PKGBUILDDIR»/src/post_modules/GL/gen.pike /«PKGBUILDDIR»/src/post_modules/GL/auto.c.in > auto.c.tmp Segmentation fault This doesn't happen when pike is compiled with -O0, and 7.8.866-6 built fine (the only difference is that -7 is built with MariaDB libraries instead of MySQL), so I assume a compiler bug, but perhaps someone can help figuring out what's triggering it. The backtrace is perhaps not terribly helpful (from 8.0.358): (gdb) bt full #0 jump_opcode_F_MARK_CALL_LFUN_AND_POP (arg1=272) at /home/zino/hack/pike8-rel/pike/src/interpret_functions.h:2418 addr = <optimized out> jumpaddr = <optimized out> #1 0xf7ceeb4c in ?? () No symbol table info available. #2 0x20462184 in mega_apply_low (args=args@entry=0, arg1=arg1@entry=0x206b6370, arg2=<optimized out>) at ./src/interpret.c:2721 saved_jmpbuf = <optimized out> uwp = {previous = 0xfffedc38, frame_pointer = 0x0, func = 0x204516a0 <restore_catching_eval_jmpbuf>, arg = 0x0} #3 0x204e4714 in call_pike_initializers (o=0x206b6370, args=args@entry=0) at ./src/object.c:338 p = 0x206b6370 #4 0x204e7b9c in get_master () at ./src/object.c:702 f = <optimized out> uwp = {previous = 0x0, frame_pointer = 0x0, func = 0x204e5b50 <get_master_cleanup>, arg = 0x0} inside = 1 #5 0x204e7f04 in debug_master () at ./src/object.c:720 o = <optimized out> #6 0x204d55cc in load_pike_master () at ./src/pike_embed.c:397 m = <optimized out> #7 0x2044724c in main (argc=6, argv=0xfffef534) at ./src/main.c:676 m = <optimized out> back = {previous = 0x0, recovery = {{__jmpbuf = {-1376152737, 0, 1917001823, 0 <repeats 13 times>, -134352256, -73784, 4, 543427968, -67736, 570426500, 0 <repeats 40 times>, -1, 0 <repeats 49 times>}, __mask_was_saved = 0, __saved_mask = {__val = {0 <repeats 32 times>}}}}, frame_pointer = 0x0, stack_pointer = 0, mark_sp = 0, severity = 40, onerror = 0xfffedbdc} e = <optimized out> num = <optimized out> p = 0xfffef767 ""

3 16

Refdoc
by Pontus Östlund 29 Nov '16

29 Nov '16

Hi guys! I saw the refdoc on the Pike site is somewhat broken. The plan is to port the new refdoc layout in 8.1 to 8.0, and I'm working on that as we speak. But in order to make that work I need to add the standalone Tools.Standalone.pike_to_html tool since that is used to highlight example code in the refdoc. Is that ok? Regards ----------------------------- Pontus Östlund Developer • Roxen AB +46 70-662 81 69 www.roxen.com <http://www.roxen.com/> | twitter.com/roxen <https://twitter.com/roxen>

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Segfault generating src/post_modules/GL/auto.c on PowerPC
by Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) ＠ Pike (-) developers forum 29 Nov '16

29 Nov '16

For reference, Gentoo considers gcc 4.9.4 stable for all arches except x86 (where 4.9.3 is the latest stable). Anything beyond that is considered unstable.

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Pike-devel November 2016