51 lines
834 B
Go
51 lines
834 B
Go
package main
|
|
|
|
import (
|
|
"unsafe"
|
|
|
|
"github.com/goplus/llgo/internal/runtime"
|
|
)
|
|
|
|
const (
|
|
eltSize = int(unsafe.Sizeof(0))
|
|
)
|
|
|
|
func doChan(cap int) {
|
|
c := runtime.NewChan(eltSize, cap)
|
|
go func() {
|
|
v := 100
|
|
runtime.ChanSend(c, unsafe.Pointer(&v), eltSize)
|
|
}()
|
|
var ret int
|
|
runtime.ChanRecv(c, unsafe.Pointer(&ret), eltSize)
|
|
println(ret)
|
|
}
|
|
|
|
func main() {
|
|
doChan(10)
|
|
doChan(0)
|
|
|
|
c := runtime.NewChan(eltSize, 3)
|
|
|
|
v := 1
|
|
runtime.ChanSend(c, unsafe.Pointer(&v), eltSize)
|
|
v = 2
|
|
runtime.ChanSend(c, unsafe.Pointer(&v), eltSize)
|
|
v = 3
|
|
runtime.ChanSend(c, unsafe.Pointer(&v), eltSize)
|
|
runtime.ChanClose(c)
|
|
|
|
v = 10
|
|
|
|
if runtime.ChanTrySend(c, unsafe.Pointer(&v), eltSize) {
|
|
println("error: chan send to closed chan")
|
|
}
|
|
|
|
for {
|
|
if ok := runtime.ChanRecv(c, unsafe.Pointer(&v), eltSize); !ok {
|
|
break
|
|
}
|
|
println(v)
|
|
}
|
|
}
|