Pike-devel May 2015

pike-devel@lists.lysator.liu.se

4 participants
7 discussions

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)?

5 4

managing comport settings in linux
by Henrik Grubbstr�m (Lysator) ＠ Pike (-) developers forum 13 Mar '26

13 Mar '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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full MySQL 4.x support. or pike roadmap
by thomas.gusenleitner＠com-bet.com ＠ Pike developers forum 28 Feb '26

28 Feb '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

4 4

Re: Setting socket options: so many, uhh, options!
by Chris Angelico 15 Sep '16

15 Sep '16

On Tue, Mar 10, 2015 at 10:05 PM, Mirar @ Pike developers forum <10353(a)lyskom.lysator.liu.se> wrote: > Wait, I said REUSEPORT? What's the difference to REUSEADDR? Mysteries > of TCP sockets... Here's a decent explanation, I think: http://stackoverflow.com/questions/14388706/socket-options-so-reuseaddr-and… ChrisA

3 6

*new*-style tail-recursion
by Arne Goedeke 07 May '15

07 May '15

I have been working on refactoring the API of mega_apply and friends. The purpose of that branch is to improve the performance of function calls. More specifically, in some cases (e.g. f_map) frame allocation, setup and deallocation could be avoided if the API permitted it. I will soon push a branch and ask for feedback on that. Now to the real questions: apply_low.h contains a FIXME notice talking about new-style tail recursion. Could anyone elaborate what that is, which code to look at and how that works? arne

2 1

C-function contract
by Martin Nilsson (Opera Mini - AFK!) ＠ Pike (-) developers forum 07 May '15

07 May '15

In some of the recent meetings we have discussed the ABI contract for pike functions. Since apply already cleans up the stack (the top is the return value, and the rest is discarded), it would make sense to change the contract so that C functions don't have to care what is on the stack beside the return value. However, the drawback is that you can no longer just call these functions (typically f_*) from other C-code if you intend to use anthing more than the top of the stack. E.g. f_a(); f_b(); f_aggregate(2); You would have to save the stack position and do a stack_pop_n_elems_keep_top() after each call. Do we still think this change is a good one?

2 1

Possible parenthesization problem?
by Chris Angelico 07 May '15

07 May '15

Poking around in signal_handler.c out of curiosity, I came across this: while(UNLIKELY(close(control_pipe[0])) < 0 && UNLIKELY(errno==EINTR)); while(UNLIKELY(close(control_pipe[1])) < 0 && UNLIKELY(errno==EINTR)); (lines 3580-3581) The UNLIKELY marker normally applies to an entire condition, not just to the integer that's about to be compared to zero. Should this become: while(UNLIKELY(close(control_pipe[0]) < 0) && UNLIKELY(errno==EINTR)); while(UNLIKELY(close(control_pipe[1]) < 0) && UNLIKELY(errno==EINTR)); or is there something I'm not understanding about the nature of UNLIKELY()? ChrisA

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Pike-devel May 2015