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// +build wasm,!wasi
package runtime
import "unsafe"
type timeUnit float64 // time in milliseconds, just like Date.now() in JavaScript
//export _start
func _start() {
// These need to be initialized early so that the heap can be initialized.
heapStart = uintptr(unsafe.Pointer(&heapStartSymbol))
heapEnd = uintptr(wasm_memory_size(0) * wasmPageSize)
run()
}
var handleEvent func()
//go:linkname setEventHandler syscall/js.setEventHandler
func setEventHandler(fn func()) {
handleEvent = fn
}
//export resume
func resume() {
go func() {
handleEvent()
}()
scheduler()
}
//export go_scheduler
func go_scheduler() {
scheduler()
}
const asyncScheduler = true
func ticksToNanoseconds(ticks timeUnit) int64 {
// The JavaScript API works in float64 milliseconds, so convert to
// nanoseconds first before converting to a timeUnit (which is a float64),
// to avoid precision loss.
return int64(ticks * 1e6)
}
func nanosecondsToTicks(ns int64) timeUnit {
// The JavaScript API works in float64 milliseconds, so convert to timeUnit
// (which is a float64) first before dividing, to avoid precision loss.
return timeUnit(ns) / 1e6
}
// This function is called by the scheduler.
// Schedule a call to runtime.scheduler, do not actually sleep.
//export runtime.sleepTicks
func sleepTicks(d timeUnit)
//export runtime.ticks
func ticks() timeUnit
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