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github.com/moarvm/moarvm | IRC logs at colabti.org/irclogger/irclogger_logs/moarvm Set by AlexDaniel on 12 June 2018. |
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| timotimo | so, i've been wondering | 14:48 | |
| if all the CBlah reprs get a "owner-of-the-memory" pointer | |||
| should it always ask the owner for the most up-to-date pointer? | |||
| so that a CStruct inside of a CArray that gets resized will immediately work? | |||
| i'm not actually sure it wouldn't already immediately work, tbh | 14:49 | ||
| but this also applies to things that are nativecast | |||
| m: use NativeCall; my $initial = CArray[uint8].new(1, 2, 3, 4); my $casted = nativecast(CArray[uint16], $initial); $casted.say; $initial.push($_) for 10..14; $casted.say | 14:50 | ||
| evalable6 | (exit code 1) WARNING: unhandled Failure detected in DESTROY. If you meant to ignore it, y… | ||
| timotimo, Full output: gist.github.com/2c439cbcbf23df58f6...ed9bc8d17b | |||
| timotimo | right | 14:51 | |
| what | |||
| m: use NativeCall; my $initial = CArray[uint8].new(1, 2, 3, 4); my $casted = nativecast(CArray[uint16], $initial); $casted.say; $initial[$initial.elems] = $_ for 10..14; $casted.say | |||
| evalable6 | NativeCall::Types::CArray[uint16].new NativeCall::Types::CArray[uint16].new |
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| timotimo | m: use NativeCall; my $initial = CArray[uint8].new(1, 2, 3, 4); my $casted = nativecast(CArray[uint16], $initial); $casted[^2].say; $initial[$initial.elems] = 10 + $_ for 0..14; $casted[^2].say | ||
| evalable6 | (513 1027) (-3616 1712) |
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| timotimo | m: use NativeCall; my $initial = CArray[uint8].new(1, 2, 3, 4); my $casted = nativecast(CArray[uint16], $initial); $casted[^2].say; $initial[$initial.elems] = 10 + $_ for 0..1024; $casted[^2].say | 14:52 | |
| evalable6 | (513 1027) (-13456 17870) |
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| timotimo | i didn't expect the data to be overwritten this quickly, but whatevs | ||
| it shows the potential issue | 14:55 | ||
| might of course say "if you're doing that, you're in trouble anyway, you'd also be in trouble in C" | |||
| but in C it's a lot less tiresome to just have casts of the original array/pointer whereever you use it | |||
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| ugexe | time perl6 -e 'for 1..10000 { my $meta = from-json($*CWD.add("META6.json").slurp); $meta<version>; }' | 16:52 | |
| in 2019.03.1 that takes 1m45s | 16:53 | ||
| blead it takes 18s | |||
| timotimo | is that the json-fast performance improvements? | 16:57 | |
| ugexe | yeah | 17:03 | |
| timotimo | sweet | 17:05 | |
| i mean it could be more | |||
| i mean more faster | |||
| ugexe | it used to be that CURI read meta6.json for every installed module on startup (pre v6.c), and having 100 modules installed meant perl6 -e '' would take like 10 seconds | 17:06 | |
| timotimo | ouch | 17:08 | |
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| timotimo | i wonder if we should go through gen2 size classes in parallel | 23:43 | |