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wasm: support -scheduler=none

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Previously, -scheduler=none wasn't possible for WASM targets:

    $ tinygo run -target=wasm -scheduler=none ./testdata/stdlib.go
    src/runtime/runtime_wasm_js.go:34:2: attempted to start a goroutine without a scheduler

With this commit, it works just fine:

    $ tinygo run -target=wasm -scheduler=none ./testdata/stdlib.go
    stdin:  /dev/stdin
    stdout: /dev/stdout
    stderr: /dev/stderr
    pseudorandom number: 1298498081
    strings.IndexByte: 2
    strings.Replace: An-example-string

Supporting `-scheduler=none` has some benefits:

  * it reduces file size a lot compared to having a scheduler
  * it allows JavaScript to call exported functions
This commit is contained in:
Ayke van Laethem
2021-11-17 17:06:05 +01:00
committed by Ron Evans
parent 22c35c8e31
commit 51290e5842
3 changed files with 33 additions and 29 deletions
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main_test.go
+1 -1
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@@ -164,7 +164,7 @@ func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
t.Parallel()
runTest("env.go", options, t, []string{"first", "second"}, []string{"ENV1=VALUE1", "ENV2=VALUE2"})
})
if options.Target == "wasi" {
if options.Target == "wasi" || options.Target == "wasm" {
t.Run("alias.go-scheduler-none", func(t *testing.T) {
t.Parallel()
options := compileopts.Options(options)