mirror of
https://github.com/golang/go
synced 2024-11-12 02:00:23 -07:00
108 lines
1.7 KiB
Go
108 lines
1.7 KiB
Go
// $G $D/$F.go && $L $F.$A && ./$A.out
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Verify channel operations that test for blocking
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// Use several sizes and types of operands
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package main
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func pause() {
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for i:=0; i<100; i++ { sys.gosched() }
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}
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func i32receiver(c *chan int32) {
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<-c
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}
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func i32sender(c *chan int32) {
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c -< 1
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}
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func i64receiver(c *chan int64) {
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<-c
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}
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func i64sender(c *chan int64) {
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c -< 1
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}
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func breceiver(c *chan bool) {
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<-c
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}
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func bsender(c *chan bool) {
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c -< true
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}
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func sreceiver(c *chan string) {
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<-c
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}
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func ssender(c *chan string) {
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c -< "hi"
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}
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func main() {
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var i32 int32;
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var i64 int64;
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var b bool;
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var s string;
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var ok bool;
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c32 := new(chan int32);
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c64 := new(chan int64);
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cb := new(chan bool);
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cs := new(chan string);
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i32, ok = <-c32;
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if ok { panic "blocked i32sender" }
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i64, ok = <-c64;
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if ok { panic "blocked i64sender" }
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b, ok = <-cb;
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if ok { panic "blocked bsender" }
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s, ok = <-cs;
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if ok { panic "blocked ssender" }
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go i32receiver(c32);
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pause();
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ok = c32 -< 1;
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if !ok { panic "i32receiver" }
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go i32sender(c32);
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pause();
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i32, ok = <-c32;
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if !ok { panic "i32sender" }
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go i64receiver(c64);
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pause();
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ok = c64 -< 1;
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if !ok { panic "i64receiver" }
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go i64sender(c64);
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pause();
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i64, ok = <-c64;
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if !ok { panic "i64sender" }
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go breceiver(cb);
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pause();
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ok = cb -< true;
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if !ok { panic "breceiver" }
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go bsender(cb);
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pause();
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b, ok = <-cb;
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if !ok { panic "bsender" }
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go sreceiver(cs);
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pause();
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ok = cs -< "hi";
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if !ok { panic "sreceiver" }
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go ssender(cs);
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pause();
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s, ok = <-cs;
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if !ok { panic "ssender" }
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}
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