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tinygo-org / tinygo

Go compiler for small places. Microcontrollers, WebAssembly (WASM/WASI), and command-line tools. Based on LLVM.
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wasm: use wasip1 API for parameter/env passing #4565

Open aykevl opened 3 weeks ago

aykevl commented 3 weeks ago

Instead of hardcoding the command line parameters and the environment variables in the binary, pass them at runtime to Node.js and use the WASIp1 API to retrieve them in wasm_exec.js.

The only real benefit right now is that it becomes possible to change go.argv and go.env before running a wasm binary.

This also changes the syscall package for GOOS=js: it now becomes more like a libc (using wasi-libc), which means error values like syscall.EEXIST will actually match the one returned by the relevant libc function.

Wasm binary size for packages that import the os package will be increased somewhat.

Now that I've written it, I realized I don't need it after all. So I'm not sure whether this change is a good idea: I haven't seen anybody request support for go.argv or go.env yet and it does increase binary size for wasm binaries in many cases. Leaving it as a draft for now, we can merge it if there's demand for it I guess. Or close it if not.

github-actions[bot] commented 3 weeks ago

Size difference with the dev branch:

Binary size difference 
not the same command!
    tinygo build -size short -o ./build/test.hex -target=feather-rp2040 ./examples/adafruit4650
    go: downloading tinygo.org/x/tinyfont v0.3.0
not the same command!
    tinygo build -size short -o ./build/test.hex -target=nano-rp2040 -stack-size 8kb ./examples/net/websocket/dial/
    go: downloading golang.org/x/net v0.7.0
not the same command!
    tinygo build -size short -o ./build/test.hex -target=nano-rp2040 -stack-size 8kb ./examples/net/mqttclient/natiu/
    go: downloading github.com/soypat/natiu-mqtt v0.5.1
not the same command!
    tinygo build -size short -o ./build/test.hex -target=wioterminal -stack-size 8kb ./examples/net/mqttclient/paho/
    go: downloading github.com/eclipse/paho.mqtt.golang v1.2.0
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  16840   16840      0   0.00%    4324    4324      0   0.00% tinygo build -size short -o ./build/test.hex -target=feather-rp2040 ./examples/adafruit4650
  61312   61312      0   0.00%    6196    6196      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/adt7410/main.go
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  13528   13528      0   0.00%    6796    6796      0   0.00% tinygo build -size short -o ./build/test.hex -target=pybadge ./examples/amg88xx
   8640    8640      0   0.00%    4748    4748      0   0.00% tinygo build -size short -o ./build/test.hex -target=itsybitsy-m0 ./examples/apa102/main.go
  11768   11768      0   0.00%    6580    6580      0   0.00% tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/apds9960/proximity/main.go
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  10116   10116      0   0.00%    6916    6916      0   0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/basic
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  29488   29488      0   0.00%   38076   38076      0   0.00% tinygo build -size short -o ./build/test.hex -target=pyportal ./examples/ili9341/pyportal_boing
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  11692   11692      0   0.00%    4788    4788      0   0.00% tinygo build -size short -o ./build/test.hex -target=circuitplay-express ./examples/lis3dh/main.go
  14036   14036      0   0.00%    6580    6580      0   0.00% tinygo build -size short -o ./build/test.hex -target=nano-33-ble ./examples/lps22hb/main.go
  26092   26092      0   0.00%    2328    2328      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/lsm303agr/main.go
  12408   12408      0   0.00%    4796    4796      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 ./examples/lsm6ds3/main.go
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  27220   27220      0   0.00%    3648    3648      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/microbitmatrix/main.go
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   6188    6188      0   0.00%    3288    3288      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/pcd8544/setbuffer/main.go
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  10516   10516      0   0.00%    3328    3328      0   0.00% tinygo build -size short -o ./build/test.hex -target=feather-rp2040 ./examples/seesaw
   2825    2825      0   0.00%     558     558      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino ./examples/servo
  13748   13748      0   0.00%    3400    3400      0   0.00% tinygo build -size short -o ./build/test.hex -target=pico     ./examples/sgp30
   8044    8044      0   0.00%    6796    6796      0   0.00% tinygo build -size short -o ./build/test.hex -target=pybadge ./examples/shifter/main.go
  57300   57300      0   0.00%    3692    3692      0   0.00% tinygo build -size short -o ./build/test.hex -target=microbit ./examples/sht3x/main.go
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  85868   85868      0   0.00%    5140    5140      0   0.00% tinygo build -size short -o ./build/test.hex -target=challenger-rp2040 ./examples/net/ntpclient/
 296580  296580      0   0.00%   13788   13788      0   0.00% tinygo build -size short -o ./build/test.hex -target=pyportal -stack-size 8kb ./examples/net/http-get/
 119288  119288      0   0.00%    7848    7848      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino-nano33 -stack-size 8kb ./examples/net/tcpclient/
 245444  245444      0   0.00%   10488   10488      0   0.00% tinygo build -size short -o ./build/test.hex -target=nano-rp2040 -stack-size 8kb ./examples/net/websocket/dial/
 103048  103048      0   0.00%    9816    9816      0   0.00% tinygo build -size short -o ./build/test.hex -target=metro-m4-airlift -stack-size 8kb ./examples/net/socket/
 338356  338356      0   0.00%   15396   15396      0   0.00% tinygo build -size short -o ./build/test.hex -target=matrixportal-m4 -stack-size 8kb ./examples/net/webstatic/
 111492  111492      0   0.00%    7772    7772      0   0.00% tinygo build -size short -o ./build/test.hex -target=arduino-mkrwifi1010 -stack-size 8kb ./examples/net/tlsclient/
 154136  154136      0   0.00%    6540    6540      0   0.00% tinygo build -size short -o ./build/test.hex -target=nano-rp2040 -stack-size 8kb ./examples/net/mqttclient/natiu/
 116992  116992      0   0.00%   13132   13132      0   0.00% tinygo build -size short -o ./build/test.hex -target=wioterminal -stack-size 8kb ./examples/net/webclient/
 286056  286056      0   0.00%   17812   17812      0   0.00% tinygo build -size short -o ./build/test.hex -target=wioterminal -stack-size 8kb ./examples/net/webserver/
 287076  287076      0   0.00%   18212   18212      0   0.00% tinygo build -size short -o ./build/test.hex -target=wioterminal -stack-size 8kb ./examples/net/mqttclient/paho/
5266640 5266640      0   0.00%  786474  786474      0   0.00%