| // Copyright 2015 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| // chan_ssa.go tests chan operations. |
| package main |
| |
| import "fmt" |
| |
| var failed = false |
| |
| //go:noinline |
| func lenChan_ssa(v chan int) int { |
| return len(v) |
| } |
| |
| //go:noinline |
| func capChan_ssa(v chan int) int { |
| return cap(v) |
| } |
| |
| func testLenChan() { |
| |
| v := make(chan int, 10) |
| v <- 1 |
| v <- 1 |
| v <- 1 |
| |
| if want, got := 3, lenChan_ssa(v); got != want { |
| fmt.Printf("expected len(chan) = %d, got %d", want, got) |
| failed = true |
| } |
| } |
| |
| func testLenNilChan() { |
| |
| var v chan int |
| if want, got := 0, lenChan_ssa(v); got != want { |
| fmt.Printf("expected len(nil) = %d, got %d", want, got) |
| failed = true |
| } |
| } |
| |
| func testCapChan() { |
| |
| v := make(chan int, 25) |
| |
| if want, got := 25, capChan_ssa(v); got != want { |
| fmt.Printf("expected cap(chan) = %d, got %d", want, got) |
| failed = true |
| } |
| } |
| |
| func testCapNilChan() { |
| |
| var v chan int |
| if want, got := 0, capChan_ssa(v); got != want { |
| fmt.Printf("expected cap(nil) = %d, got %d", want, got) |
| failed = true |
| } |
| } |
| |
| func main() { |
| testLenChan() |
| testLenNilChan() |
| |
| testCapChan() |
| testCapNilChan() |
| |
| if failed { |
| panic("failed") |
| } |
| } |