Pike-devel April 2016

pike-devel@lists.lysator.liu.se

8 participants
10 discussions

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 … [View More]

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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

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Revamping the Pike site
by Pontus Östlund 10 Jun '16

10 Jun '16

Hi guys! As awesome a programming language Pike is, the official Pike site does not really reflect that - to say the least ;) The site today does not exacly shout that the language it self is constantly developed and rapidly progressing. I thought I might do something about that. And so I have. Most things are starting to come together, so in a few weeks I feel we can go live with the new site. But before that happens I would love to have your thoughts and feedback on it. At the moment I have … [View More]

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Re: Stdio.File()->pipe() and PROP_IPC
by Chris Angelico 27 Apr '16

27 Apr '16

On Thu, Apr 28, 2016 at 1:40 AM, Henrik Grubbström (Lysator) @ Pike (-) developers forum <10353(a)lyskom.lysator.liu.se> wrote: >>Consider this usage: >> >>object stdout = Stdio.File(); >>Process.create_process(cmd, (["stdout": stdout->pipe()]); >> >>Is this at risk of failing, where stdout->pipe(Stdio.PROP_IPC) would succeed? > > Not currently, as the default type of pipe generated by pipe() is > fd_pipe() (which maps to CreatePipe on … [View More]

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Stdio.File()->pipe() and PROP_IPC
by Chris Angelico 27 Apr '16

27 Apr '16

What exactly does PROP_IPC (fd_INTERPROCESSABLE in the source) permit? Consider this usage: object stdout = Stdio.File(); Process.create_process(cmd, (["stdout": stdout->pipe()]); Is this at risk of failing, where stdout->pipe(Stdio.PROP_IPC) would succeed? I can't find anything that indicates exactly what "IPC" means, and whether using one end of a pipe for a process's standard stream counts as IPC. It seems like it ought to, but the Pike standard library isn't consistent about … [View More]

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Re: Pike 8.0.222 release candidate
by Chris Angelico 25 Apr '16

25 Apr '16

On Wed, Apr 6, 2016 at 10:25 AM, Peter Bortas @ Pike developers forum <10353(a)lyskom.lysator.liu.se> wrote: > Well, the build machine is an XP. I don't mind dropping anything > before 7. But that means a whole new build environment. Not happening > this week. Fair enough. I'd guess that GTK 2.24.30 should run on XP, at least. I'm just picking this up again after a flat-out week of musical theatre, and am finding this: http://gtk-win.sourceforge.net/home/index.php/Main/… [View More]

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Fwd: [Pike-automation] New Defects reported by Coverity Scan for Pike-experiment
by Peter Bortas 17 Apr '16

17 Apr '16

Since Arne has been active on his faster_calls branch I switched the experiment stream on Coverity Scan to have a look at it. These are the new issues if found when going from marty/optimised_map to arne/faster_calls. Without looking closer I suspect the four in Image isn't related to the optimizations code, but the two in interpreter probably are. If you want to have a look at them follow the link at the bottom. Gives a better overview than the condensed ASCII in this mail. -- Peter Bortas … [View More] ---------- Forwarded message ---------- From: <scan-admin(a)coverity.com> Date: Sun, Apr 17, 2016 at 6:48 PM Subject: [Pike-automation] New Defects reported by Coverity Scan for Pike-experiment To: pike-automation(a)lists.lysator.liu.se Hi, Please find the latest report on new defect(s) introduced to Pike-experiment found with Coverity Scan. 6 new defect(s) introduced to Pike-experiment found with Coverity Scan. 1 defect(s), reported by Coverity Scan earlier, were marked fixed in the recent build analyzed by Coverity Scan. New defect(s) Reported-by: Coverity Scan Showing 6 of 6 defect(s) ** CID 1358595: Incorrect expression (UNUSED_VALUE) /home/covscan/pike/pike-git/src/interpret.c: 2202 in unlink_previous_frame() ________________________________________________________________________________________________________ *** CID 1358595: Incorrect expression (UNUSED_VALUE) /home/covscan/pike/pike-git/src/interpret.c: 2202 in unlink_previous_frame() 2196 */ 2197 current->save_sp=prev->save_sp; 2198 current->save_mark_sp=prev->save_mark_sp; 2199 current->flags = prev->flags; 2200 2201 /* Unlink the top frame temporarily. */ >>> CID 1358595: Incorrect expression (UNUSED_VALUE) >>> Assigning value from "prev" to "Pike_interpreter_pointer->frame_pointer" here, but that stored value is overwritten before it can be used. 2202 Pike_interpreter.frame_pointer=prev; 2203 2204 #ifdef PROFILING 2205 { 2206 /* We must update the profiling info of the previous frame 2207 * to account for that the current frame has gone away. ** CID 1358594: Control flow issues (MISSING_BREAK) /home/covscan/pike/pike-git/src/interpret.c: 1956 in do_trace_frame_call() ________________________________________________________________________________________________________ *** CID 1358594: Control flow issues (MISSING_BREAK) /home/covscan/pike/pike-git/src/interpret.c: 1956 in do_trace_frame_call() 1950 safe_describe_svalue(&obj_sval, 0, NULL); 1951 obj_name = complex_free_buf(&save_buf); 1952 PIKE_FN_START(function->name->size_shift == 0 ? 1953 function->name->str : "[widestring fn name]", 1954 obj_name.str); 1955 } >>> CID 1358594: Control flow issues (MISSING_BREAK) >>> The above case falls through to this one. 1956 case FRAME_CLONE: 1957 case FRAME_PARENT_CLONE: 1958 if (UNLIKELY(Pike_interpreter.trace_level)) { 1959 struct svalue tmp; 1960 struct program *p = frame->ptr; 1961 dynamic_buffer save_buf; ** CID 1358593: Null pointer dereferences (FORWARD_NULL) /home/covscan/pike/pike-git/src/modules/Image/match.h: 202 in image_match_phase() ________________________________________________________________________________________________________ *** CID 1358593: Null pointer dereferences (FORWARD_NULL) /home/covscan/pike/pike-git/src/modules/Image/match.h: 202 in image_match_phase() 196 DOUBLE_LOOP(0,1,1, *1, *1, *1) 197 else if (type==2) 198 DOUBLE_LOOP(0, haystack_certi[j], needle_certi[ny*nxs+nx],.r,.g,.b) 199 else if (type==3) 200 DOUBLE_LOOP(AVOID_IS_TOO_BIG,1,1, *1, *1, *1) 201 else if (type==4) >>> CID 1358593: Null pointer dereferences (FORWARD_NULL) >>> Dereferencing null pointer "haystack_certi". 202 DOUBLE_LOOP(AVOID_IS_TOO_BIG, haystack_certi[j], needle_certi[ny*nxs+nx],.r,.g,.b) 203 204 #undef NORMCODE 205 #undef AVOID_IS_TOO_BIG 206 #undef PIXEL_VALUE_DISTANCE 207 #undef DOUBLE_LOOP ** CID 1358592: Null pointer dereferences (FORWARD_NULL) /home/covscan/pike/pike-git/src/modules/Image/match.h: 202 in image_match_norm_corr() ________________________________________________________________________________________________________ *** CID 1358592: Null pointer dereferences (FORWARD_NULL) /home/covscan/pike/pike-git/src/modules/Image/match.h: 202 in image_match_norm_corr() 196 DOUBLE_LOOP(0,1,1, *1, *1, *1) 197 else if (type==2) 198 DOUBLE_LOOP(0, haystack_certi[j], needle_certi[ny*nxs+nx],.r,.g,.b) 199 else if (type==3) 200 DOUBLE_LOOP(AVOID_IS_TOO_BIG,1,1, *1, *1, *1) 201 else if (type==4) >>> CID 1358592: Null pointer dereferences (FORWARD_NULL) >>> Dereferencing null pointer "haystack_certi". 202 DOUBLE_LOOP(AVOID_IS_TOO_BIG, haystack_certi[j], needle_certi[ny*nxs+nx],.r,.g,.b) 203 204 #undef NORMCODE 205 #undef AVOID_IS_TOO_BIG 206 #undef PIXEL_VALUE_DISTANCE 207 #undef DOUBLE_LOOP ** CID 1358591: Null pointer dereferences (FORWARD_NULL) /home/covscan/pike/pike-git/src/modules/Image/match.h: 202 in image_match_norm() ________________________________________________________________________________________________________ *** CID 1358591: Null pointer dereferences (FORWARD_NULL) /home/covscan/pike/pike-git/src/modules/Image/match.h: 202 in image_match_norm() 196 DOUBLE_LOOP(0,1,1, *1, *1, *1) 197 else if (type==2) 198 DOUBLE_LOOP(0, haystack_certi[j], needle_certi[ny*nxs+nx],.r,.g,.b) 199 else if (type==3) 200 DOUBLE_LOOP(AVOID_IS_TOO_BIG,1,1, *1, *1, *1) 201 else if (type==4) >>> CID 1358591: Null pointer dereferences (FORWARD_NULL) >>> Dereferencing null pointer "haystack_certi". 202 DOUBLE_LOOP(AVOID_IS_TOO_BIG, haystack_certi[j], needle_certi[ny*nxs+nx],.r,.g,.b) 203 204 #undef NORMCODE 205 #undef AVOID_IS_TOO_BIG 206 #undef PIXEL_VALUE_DISTANCE 207 #undef DOUBLE_LOOP ** CID 1358590: Null pointer dereferences (FORWARD_NULL) /home/covscan/pike/pike-git/src/modules/Image/match.h: 202 in image_match() ________________________________________________________________________________________________________ *** CID 1358590: Null pointer dereferences (FORWARD_NULL) /home/covscan/pike/pike-git/src/modules/Image/match.h: 202 in image_match() 196 DOUBLE_LOOP(0,1,1, *1, *1, *1) 197 else if (type==2) 198 DOUBLE_LOOP(0, haystack_certi[j], needle_certi[ny*nxs+nx],.r,.g,.b) 199 else if (type==3) 200 DOUBLE_LOOP(AVOID_IS_TOO_BIG,1,1, *1, *1, *1) 201 else if (type==4) >>> CID 1358590: Null pointer dereferences (FORWARD_NULL) >>> Dereferencing null pointer "haystack_certi". 202 DOUBLE_LOOP(AVOID_IS_TOO_BIG, haystack_certi[j], needle_certi[ny*nxs+nx],.r,.g,.b) 203 204 #undef NORMCODE 205 #undef AVOID_IS_TOO_BIG 206 #undef PIXEL_VALUE_DISTANCE 207 #undef DOUBLE_LOOP ________________________________________________________________________________________________________ To view the defects in Coverity Scan visit, https://scan.coverity.com/projects/pike-experiment?tab=overview [View Less]

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pike -x benchmark
by Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) ＠ Pike (-) developers forum 15 Apr '16

15 Apr '16

I noticed that starting the benchmark allocates an enormous amount of memory. The reason seems to be Foreach{,2,3,4} benchmarks. Each of these has the line array const_array = enumerate(10000000); on the top level. This means that there is an object occupying 160M (10M * sizeof(svalue)) in each of these _programs_, so it is always present when the programs are loaded, not just when the benchmarks are run. So in short, loading these four benchmarks (pike -x benchmark loads all the … [View More]

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Re: Pike 8.0.222 release candidate
by Chris Angelico 06 Apr '16

06 Apr '16

On Wed, Apr 6, 2016 at 9:50 AM, Peter Bortas @ Pike developers forum <10353(a)lyskom.lysator.liu.se> wrote: >>I can't recommend this to my users while it ships GTK 2.12.11 :( Is >>there anything I can do to help out there? > > Well. GTK+ used to be available as an all-in-one package for Windows > with a readme file saying > > "This is a bundle containing the GTK+ stack and its dependencies for > Windows. As such it is nothing more than a combination of the … [View More]

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Pike 8.0.222 release candidate
by Peter Bortas 06 Apr '16

06 Apr '16

No final release today. The disk in my virtual Windows machine broke. Fixing that took up time that should have been used for testing, so you will only get some completely untested builds. Pike 8.0.222 release candidate: https://pike.lysator.liu.se/pub/pike/beta/8.0.222/Pike-v8.0.222.tar.gz Windows build: https://pike.lysator.liu.se/pub/pike/beta/8.0.222/Pike-v8.0.222-win32-oldli… Changes since Pike 8.0.182 (release 2) --------------------------------------------------------------… [View More]

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Pike-devel April 2016