libdcompile

LLVMとclangを使ってC++を実行時にコンパイルする方法を解説します

Transcript

1. libdcompile Naomasa Matsubayashi
2. @fadis_ ࠷ۙ࿩୊ͷ๭"ࣾ $
   7JN
   (FOUPP มଶΛࣝผ͢Δཁૉ
3. int main() {! float a = 5.0f;! std::vector< boost::filesystem::path > f;! f.push_back( "hoge.cpp" );! f.push_back( "fuga.cpp" );! dcompile::dynamic_compiler dc;! dc.getLoader().enableSystemPath();! if( !dc.getLoader().load( "jpeg" ) )! throw Ouch();! dc.getHeaderPath().enableSystemPath();! dcompile::module lib = dc( f.begin(), f.end() );! boost::optional< dcompile::function > foo =! lib.getFunction( "foo" );! if( foo )! (*foo)( &a );! else! throw Ouch();! std::cout << a << " outside" << std::endl;! }
4. $ ʹແͯ͘൵͍͠΋ͷ FWBM
5. FWBMͱ͸ 1FSMͷ৔߹ FWBM
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8. FWBMͱ͸ ࣮ߦ࣌ʹίʔυΛղऍͯ͠
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9. ϥΠϒϥϦʹͳͬͯΔ$ ίϯύΠϥ --7. DMBOH ͜ΕΛ࢖͑͹$ ͰFWBMͰ͖Δ͸ͣ
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11. Ϛγϯޠ Ϛγϯޠͷੜ੒ DMBOH --7. VTFS $ #$ $ #$ ߏจղੳ #$
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12. --7.͸ಡΈࠐΜͩ#$ͷѻ͍Λ
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14. ϦϯΧΛ࢖ΘͣʹͲ͏΍ͬͯ
    ґଘϥΠϒϥϦΛϦϯΫ͍ͯ͠Δͷ͔ --7.͸ΠϯλϓϦλ΍+*5Ͱ࣮ߦ͢Δࡍ
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16. ϦϯΧΛ࢖ΘͣʹͲ͏΍ͬͯ
    ґଘϥΠϒϥϦΛϦϯΫ͍ͯ͠Δͷ͔ EMGDO͸104*9ݻ༗ --7.ʹ͸
    γεςϜͷμΠφϛοΫϩʔυΛந৅Խͨ͠
    ؔ਺͕༻ҙ͞Ε͍ͯΔ ͨͩ͠ϩʔυ͚ͩ MMWNTZT%ZOBNJD-JCSBSZ-PBE-JCSBSZ1FSNBOFOUMZ
17. ϦϯΧΛ࢖ΘͣʹͲ͏΍ͬͯ
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    Կࣄ΋ແ͔͔ͬͨͷΑ͏ʹ࣮ߦग़དྷΔ
18. int main() {! float a = 5.0f;! std::vector< boost::filesystem::path > f;! f.push_back( "hoge.cpp" );! f.push_back( "fuga.cpp" );! dcompile::dynamic_compiler dc;! dc.getLoader().enableSystemPath();! if( !dc.getLoader().load( "jpeg" ) )! throw Ouch();! dc.getHeaderPath().enableSystemPath();! dcompile::module lib = dc( f.begin(), f.end() );! boost::optional< dcompile::function > foo =! lib.getFunction( "foo" );! if( foo )! (*foo)( &a );! else! throw Ouch();! std::cout << a << " outside" << std::endl;! } f.push_back( "hoge.cpp" );! f.push_back( "fuga.cpp" ); dcompile::dynamic_compiler dc; dc.getLoader().enableSystemPath();! if(! !dc.getLoader().load( "jpeg" ) )! throw Ouch(); dc.getHeaderPath()! .enableSystemPath(); dcompile::module lib =! dc( f.begin(), f.end() ); boost::optional<! dcompile::function! > foo = lib.getFunction( "foo" ); (*foo)( &a );
19. #include <jpeglib.h>! extern "C" void moo( float *a );! extern "C" void foo( float *a ) {! struct jpeg_compress_struct cinfo;! jpeg_create_compress( &cinfo );! moo( a );! } #include <iostream>! extern "C"! void moo( float *a ) {! std::cout << *a << " inslide" << std::endl;! std::cout << "Hello, world!" << std::endl;! *a += 0.1f;! } IPHFDQQ GVHBDQQ
20. ಉҰϓϩηε ϗετίʔυ MJCKQFH NBJO qPBU
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21. %ͳΜͱ͔͞Μ͕࡞ͬͨ
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22. DMBOHͷา͖ํ DMBOHͷιʔεʹؔ͢Δ࠷௿ݶͷυΩϡϝϯτ ͦΕ͸EPYZHFO DMBOHͷιʔεʹؔ͢ΔৄࡉͳυΩϡϝϯτ ͦΕ͸ιʔε Θ͔Βͳ͍͜ͱ͸ιʔεʹฉ͚
23. DMBOHͷา͖ํ --7.ͱDMBOHͷࠓ͕Θ͔Δ
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24. DMBOHͷา͖ํ ͰɺͲ͔͜ΒಡΊ͹ྑ͍ͷ NBJOؔ਺͔ΒͩΖKL 0XOJOH1US$PNQJMBUJPO
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25. DMBOHͷา͖ํ JOU
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28. DMBOHͷา͖ํ ௒ॏཁΫϥε
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29. DMBOHͷา͖ํ ௒ॏཁΫϥε
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31. --7.ͷา͖ํ ෳ਺ͷ--7.Ϟδϡʔϧ CDͱ͔͍ͭͯΔ΍ͭ Λ
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    -JOLFS͕ղ์͢Δ #$ #$ #$ ϦϯΫ
32. --7.ͷา͖ํ ग़དྷ্͕ͬͨϞδϡʔϧ͸
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33. --7.ͷา͖ํ ϞδϡʔϧΛ&OHJOF#VJMEFSʹ౉͠
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34. --7.ͷา͖ํ &&SVO4UBUJD$POTUSVDUPST%FTUSVDUPST GBMTF  ϞδϡʔϧͷίϯετϥΫλΛ࣮ߦ JOU
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35. MJCDMBOHʹ͍ͭͯ DMBOHͷϥΠϒϥϦͬͯࠓྲྀߦͷMJCDMBOH ͕͍ͪ·͢ DMBOHͷϥΠϒϥϦ܉ஂ MJCDMBOH"3$.JHSBUF MJCDMBOH"45B MJCDMBOH"OBMZTJTB MJCDMBOH#BTJDB MJCDMBOH$PEF(FOB MJCDMBOH%SJWFSB  MJCDMBOHTP DMBOHͷϥΠϒϥϦΛ
    $ݴޠΠϯλʔϑΣʔεͰ
    ϥοϓͨ͠΋ͷ
36. MJCDMBOHʹ͍ͭͯ MJCDMBOH͞Μ͸
    ߏจղੳΛߦ͏ͱ͜Ζ·Ͱ͔͠ϥοϓ͍ͯ͠ͳ͍ MJCDMBOHͰݡ͍γϯλοΫεͱ͔͸͋ͬͯ΋
    MJCDMBOHͰίϯύΠϧͱ͔ฉ͔ͳ͍ͷ͸ͦͷͨΊ $ FS͸ϥούΛհ͞ͳͯ͘΋
    શͯͷϥΠϒϥϦΛར༻Ͱ͖Δ MJCDMBOHͱ͔͍ΒΜ͔ͬͨΜ΍ʂ $ FSʹݶΔ
37. ϦϯΫ͢΂͖ϥΠϒϥϦ 2
    DMBOHͱ--7.ͷϥΠϒϥϦ͸୔ࢁ͋Γ·͕͢ɺ
    ࣗ෼ͷίʔυΛಈ͔ͨ͢Ίʹඞཁͳͷ͸
    ͲΕͱͲΕͰ͠ΐ͏ ͲͷγϯϘϧ͕ͲͷϥΠϒϥϦʹؚ·Ε͍ͯΔ͔͸
    Ͳ͜ʹ΋ॻ͔Ε͍ͯͳ͍ "
    શ෦ϦϯΫ͔ͯ͠Βͭͮͭ֎ͯ͠Έͯɺ
    ϦϯΫΤϥʔ͕ग़ΔϠπ͸࢖ͬͯΔʂ
38. ϦϯΫ͢΂͖ϥΠϒϥϦ MJCDMBOH"3$.JHSBUF MJCDMBOH"45B MJCDMBOH"OBMZTJTB MJCDMBOH#BTJDB MJCDMBOH$PEF(FOB MJCDMBOH%SJWFSB MJCDMBOH&EJUB MJCDMBOH'SPOU&OEB MJCDMBOH'SPOU&OE5PPM MJCDMBOH*OEFYB MJCDMBOH-FYB MJCDMBOH1BSTFB MJCDMBOH3FXSJUFB MJCDMBOH4FNBB MJCDMBOH4FSJBMJ[BUJPO MJC--7."TN1BSTFSB MJC--7."TN1SJOUFSB MJC--7.#JU3FBEFSB MJC--7.&YFDVUJPO&OHJOF MJC--7.+*5B MJC--7..$+*5B MJC--7.$PEF(FOB MJC--7.JQPB MJC--7.$PSFB MJC--7.-JOLFSB MJC--7.*OTUSVNFOUBUJPOB MJCEDPNQJMFͷ৔߹
39. ݱ࣌఺Ͱͷ՝୊ ࣮ߦ࣌ίϯύΠϧ͞Εͨίʔυͷؔ਺ݺͼग़࣌͠
    Ҿ਺ͷੵΈํ͕ಾ
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    ݱࡏ࣮૷࡞ۀத --7.ͷόʔδϣϯ্͕͕Δͨͼʹ
    ΠϯλʔϑΣʔε͕มΘΔ
40. ݁࿦ $ Ͱ࣮ߦ࣌ίϯύΠϧ͸
    Ͱ͖Δ
41. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠