tinygo: revise and simplify wasmtime argument handling #4555
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- Use wasmtime run subcommand instead of bare wasmtime. This enables use of wasmtime serve or other subcommands. - Simplify buildAndRun, condensing wasmtime handling into a single section handling env vars and dir args. - Only set PWD to the package dir if running tests, but not with tinygo run.
ydnar
commented
Oct 27, 2024
| @@ -925,7 +927,7 @@ func buildAndRun(pkgName string, config *compileopts.Config, stdout io.Writer, c | |||
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| // Run binary. | |||
| if config.Options.PrintCommands != nil { | |||
| config.Options.PrintCommands(cmd.Path, cmd.Args...) | |||
| config.Options.PrintCommands(cmd.Path, cmd.Args[1:]...) | |||
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Running tinygo run -x ... repeated the full path to wasmtime and wasmtime.
ydnar
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deadprogram
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Oct 27, 2024
3 tasks
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The |
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Yes that still works. The equivalent |
ydnar
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Nov 1, 2024
* wasihttp: remove func optionZero * examples/basic: basic debug logging * wasihttp: rename functions, add TODO * wasihttp: implement basic response handling for server * internal/go/http/proxy: chmod * wasip2-http.json: change emulator to wasmtime serve Depends on tinygo-org/tinygo#4555 * wasihttp: reorganize and streamline wasi:http to net/http API translation * examples/basic: TinyGo does not support net/http@go1.22 with new mux features like 'GET /' * wasihttp: implement http.ResponseWriter writes * wasihttp: implement streamWriter * wasihttp: OK initialism * wasihttp: refine interface to streamWriter * wasihttp: clean up transport * wasihttp: embed fewer fields * wasihttp: remove Close method from streamWriter * wasihttp: rename incomingReader to bodyReader * wasihttp: rename streamWriter to bodyWriter * wasihttp: make trailer callback naming consistent * wasihttp: add trailers callback to newBodyWriter * wasihttp: centralize sending trailers and OutgoingBodyFinish * wasihttp: allow nil trailer callback * examples/basic: add goroutine-driven counter wasmtime serve does not reuse instances, so this does not work * .github: add .github directory for initial CI and Dependabot config
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This PR implements 3 related changes to how TinyGo processes arguments for the
wasmtimeemulator. I ran across the issue related to trying to usewasmtime servein a custom target file for my WasmCon talk next month.It adds support for alternative
wasmtimesubcommands likeserve, simplifies the Wasmtime-specific code paths, and fixes PWD handling fortinygo runwhen not running tests. I recommend reviewing by commit to see the individual changes.Detailed changes:
buildAndRun, condensingwasmtimehandling into a single section handling--envand--dirargs.wasmtime runsubcommand instead of barewasmtime. This enables use ofwasmtime serveor other subcommands. The key change is that emulator arguments are inserted after the subcommand, e.g.run.PWDto the package dir only when running tests, which allowstinygo run --target wasip1to run withPWD=..-x(PrintCommands) where it repeated the full path and name of the command.