a545f17d2e
This adds true GOOS=wasip1 support in addition to our existing -target=wasi support. The old support for WASI isn't removed, but should be treated as deprecated and will likely be removed eventually to reduce the test burden.
51 строка
1,4 КиБ
Go
51 строка
1,4 КиБ
Go
//go:build wasm && !wasi && !wasip1
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package runtime
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import "unsafe"
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type timeUnit float64 // time in milliseconds, just like Date.now() in JavaScript
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// wasmNested is used to detect scheduler nesting (WASM calls into JS calls back into WASM).
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// When this happens, we need to use a reduced version of the scheduler.
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var wasmNested bool
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//export _start
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func _start() {
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// These need to be initialized early so that the heap can be initialized.
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heapStart = uintptr(unsafe.Pointer(&heapStartSymbol))
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heapEnd = uintptr(wasm_memory_size(0) * wasmPageSize)
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wasmNested = true
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run()
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wasmNested = false
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}
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var handleEvent func()
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//go:linkname setEventHandler syscall/js.setEventHandler
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func setEventHandler(fn func()) {
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handleEvent = fn
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}
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func ticksToNanoseconds(ticks timeUnit) int64 {
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// The JavaScript API works in float64 milliseconds, so convert to
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// nanoseconds first before converting to a timeUnit (which is a float64),
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// to avoid precision loss.
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return int64(ticks * 1e6)
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}
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func nanosecondsToTicks(ns int64) timeUnit {
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// The JavaScript API works in float64 milliseconds, so convert to timeUnit
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// (which is a float64) first before dividing, to avoid precision loss.
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return timeUnit(ns) / 1e6
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}
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// This function is called by the scheduler.
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// Schedule a call to runtime.scheduler, do not actually sleep.
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//
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//go:wasmimport gojs runtime.sleepTicks
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func sleepTicks(d timeUnit)
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//go:wasmimport gojs runtime.ticks
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func ticks() timeUnit
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