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TinyGoでWasmを生成する / Compile Wasm by TinyGo
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hachi (Hayao Kimura)
May 20, 2019
Programming
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560
TinyGoでWasmを生成する / Compile Wasm by TinyGo
TinyGoでWebAssemblyをコンパイルした話
hachi (Hayao Kimura)
May 20, 2019
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Transcript
©2019 Wantedly, Inc. TinyGoͰWasmΛੜ͢Δ golang.tokyo #24 May 21, 2019 -
Hayao Kimura
©2019 Wantedly, Inc. "CPVUNF • ଜ ॣੜ @hachiblogʢͪ΅ʔʣ • Wantedly
Inc. ͷ৽ଔʁ ̍ • goྺఔ • ΧϝϥɺμΠϏϯά • ΩʔϘʔυࣗ࡞͍ͨ͠ͻͱ
©2019 Wantedly, Inc. 1. TinyGoͱ • TinyGoͷಛ • TinyGoͰͰ͖Δ͜ͱ 2.
TinyGoͰWasmΛ࡞Δ • ͳͥTinyGoͳͷ͔ • WasmΛ࡞ͬͯΈΔ Agenda
©2019 Wantedly, Inc. TinyGoͱ
©2019 Wantedly, Inc. 5JOZ(Pͱ • GoͷܰྔίϯύΠϥ • LLVMΛͬͯίϯύΠϧ͍ͯ͠Δ • γϯάϧίΞΛఆ
TinyGoͷಛ https://github.com/tinygo-org/tinygo
©2019 Wantedly, Inc. 5JOZ(Pͱ • ༷ʑͳϚΠίϯ্Ͱಈ࡞͢Δ • ֦ுϞδϡʔϧͳͲͷύοέʔδॱ࣍Ճத • WebAssembly͕ίϯύΠϧͰ͖Δ
• ৄ͘͠ˠ TinyGoͰͰ͖Δ͜ͱ
©2019 Wantedly, Inc. TinyGoͰWasmΛ࡞Δ
©2019 Wantedly, Inc. 5JOZ(PͰ8BTNΛ࡞Δ • WebAssembly • ϒϥβ্ʹ͓͍ͯόΠφϦܗࣜͰ࣮ߦՄೳ • Wasm
1.0ओཁͳϒϥβͰಈ࡞Մೳ Wasmͱ Wikipedia ΑΓҾ༻
©2019 Wantedly, Inc. 5JOZ(PͰ8BTNΛ࡞Δ • ຊՈGoίϯύΠϥͰ1.11ͰWasmʹରԠ͍ͯ͠Δ • αΠζ͕ͱͯେ͖͘ͳΔ • TinyGoͰ͋Εখ͑͘͞ΒΕΔ
ͳͥTinyGoͳͷ͔
©2019 Wantedly, Inc. 5JOZ(PͰ8BTNΛ࡞Δ • htmlʹ͋ΔjpegΛWasmͰಡΈࠐΜͰhogehoge͍ͨ͠ • ຊՈGoίϯύΠϥͱͷWasmͷϑΝΠϧαΠζͷࠩΛΓ͍ͨ • jpegͷྔ͕૿͑ͨ࣌ɺͲΕ͘Β͍͞ʹҧ͍͕ग़Δͷ͔Γ͍ͨ
Γ͍ͨ͜ͱ
©2019 Wantedly, Inc. 5JOZ(PͰ8BTNΛ࡞Δ ͬͨ͜ͱ 1. jsͰbase64Τϯίʔυ 2. wasmʹͯ͠σίʔυ •
͜͜Ͱॏ͍ॲཧΛhogehoge͢Δ 3. base64ʹ࠶Τϯίʔυͯ͠jsʹฦ͢
©2019 Wantedly, Inc. 5JOZ(PͰ8BTNΛ࡞Δ ͬͨ͜ͱ 1. jsͰbase64Τϯίʔυ 2. wasmʹͯ͠σίʔυ •
͜͜Ͱॏ͍ॲཧΛhogehoge͢Δ 3. base64ʹ࠶Τϯίʔυͯ͠jsʹฦ͢
©2019 Wantedly, Inc. 5JOZ(PͰ8BTNΛ࡞Δ ͬͨ͜ͱ 1. jsͰbase64Τϯίʔυ 2. wasmʹͯ͠σίʔυ •
͜͜Ͱॏ͍ॲཧΛhogehoge͢Δ 3. base64ʹ࠶Τϯίʔυͯ͠jsʹฦ͢ function includeFile() { var obj = document.getElementById('getImage') var cvs = document.createElement('canvas'); cvs.width = obj.width; cvs.height = obj.height; var ctx = cvs.getContext('2d'); ctx.drawImage(obj, 0, 0); var data = cvs.toDataURL('image/jpeg'); document.getElementById('hidden').textContent = data.replace(/^data.*base64,/, '');; wasm.exports.convertFile(); }
©2019 Wantedly, Inc. 5JOZ(PͰ8BTNΛ࡞Δ ͬͨ͜ͱ 1. jsͰbase64Τϯίʔυ 2. wasmʹͯ͠σίʔυ •
͜͜Ͱॏ͍ॲཧΛhogehoge͢Δ 3. base64ʹ࠶Τϯίʔυͯ͠jsʹฦ͢
©2019 Wantedly, Inc. 5JOZ(PͰ8BTNΛ࡞Δ wasmʹͨ͠ͱ͖ͷॲཧ import ( "syscall/js" "encoding/base64" "image/jpeg"
"bytes" ) func convertFile() { global := js.Global() document := global.Get("document") image_string := document.Call("getElementById", "hidden").Get("textContent").String() data, _ := base64.StdEncoding.DecodeString(image_string) jpgI, _ := jpeg.Decode(bytes.NewReader(data)) //ॏ͍ॲཧ var buffer bytes.Buffer jpeg.Encode(&buffer,jpgI,nil) encode_string := base64.StdEncoding.EncodeToString(buffer.Bytes()) image_viewer := document.Call("getElementById", "hidden-reader") global.Call("eval","console.log('test')") image_viewer.Set("textContent",encode_string) }
©2019 Wantedly, Inc. 5JOZ(PͰ8BTNΛ࡞Δ wasmʹͨ͠ͱ͖ͷॲཧ import ( "syscall/js" "encoding/base64" "image/jpeg"
"bytes" ) func convertFile() { global := js.Global() document := global.Get("document") image_string := document.Call("getElementById", "hidden").Get("textContent").String() data, _ := base64.StdEncoding.DecodeString(image_string) jpgI, _ := jpeg.Decode(bytes.NewReader(data)) //ॏ͍ॲཧ var buffer bytes.Buffer jpeg.Encode(&buffer,jpgI,nil) encode_string := base64.StdEncoding.EncodeToString(buffer.Bytes()) image_viewer := document.Call("getElementById", "hidden-reader") global.Call("eval","console.log('test')") image_viewer.Set("textContent",encode_string) }
©2019 Wantedly, Inc. 5JOZ(PͰ8BTNΛ࡞Δ wasmʹͨ͠ͱ͖ͷॲཧ import ( "syscall/js" "encoding/base64" "image/jpeg"
"bytes" ) func convertFile() { global := js.Global() document := global.Get("document") image_string := document.Call("getElementById", "hidden").Get("textContent").String() data, _ := base64.StdEncoding.DecodeString(image_string) jpgI, _ := jpeg.Decode(bytes.NewReader(data)) //ॏ͍ॲཧ var buffer bytes.Buffer jpeg.Encode(&buffer,jpgI,nil) encode_string := base64.StdEncoding.EncodeToString(buffer.Bytes()) image_viewer := document.Call("getElementById", "hidden-reader") global.Call("eval","console.log('test')") image_viewer.Set("textContent",encode_string) }
©2019 Wantedly, Inc. ίϯύΠϧΤϥʔ 5JOZ(PͰ8BTNΛ࡞Δ ͬͨ͜ͱ > tinygo build -o
src/wasm.wasm -target=wasm src/export/wasm.go usr/local/go/src/image/ycbcr.go:176:20: todo: full slice expressions (with max): []byte
©2019 Wantedly, Inc. Θ͔ΒΜ Page Title Page Subtitle
©2019 Wantedly, Inc. ࠔͬͨ ࠔͬͨͱ͖ઌഐʹ૬ஊ Page Title Page Subtitle
©2019 Wantedly, Inc. TinyGoͰWasmΛ࡞Εͳ͔ͬͨ
©2019 Wantedly, Inc. TinyGoͰWasmΛ࡞Εͳ͔ͬͨ
©2019 Wantedly, Inc. TinyGoͰWasmΛ࡞Εͳ͔ͬͨ
©2019 Wantedly, Inc. TinyGoͰWasmΛ࡞Εͳ͔ͬͨ
©2019 Wantedly, Inc. ऴྃ Page Title Page Subtitle
©2019 Wantedly, Inc. 5JOZ(PͰ8BTNΛ࡞Εͳ͔ͬͨ • ରԠ͍ͯ͠ͳ͍ඪ४ύοέʔδ͕݁ߏ͋ͬͨ • ·ͩ·ͩTinyGoͰͰ͖ͳ͍͜ͱଟ͍ • ͱ͍͑ເͷ͋ΔʢcontributeͰ͖Ε͍ͨ͠
• ίϯύΠϥͷษڧʹͳΔ͔ʁ
©2019 Wantedly, Inc. ·ͱΊ • TinyGoΛ͑WasmΛίϯύΠϧͰ͖Δ • ͨͩ͠·࣮ͩ༻తͰͳͦ͞͏ • ϚΠίϯͷίʔυͱͯॻ͖͍͢ͷͰTinyGoΛҭ͍͖͍ͯͯͨ
©2019 Wantedly, Inc. TinyGoͰWasmΛੜ͢ΔͰ͖ͳ͔ͬͨ golang.tokyo #24 May 21, 2019 -
Hayao Kimura