mirror of
https://github.com/golang/go
synced 2024-11-25 05:27:57 -07:00
145 lines
2.9 KiB
Go
145 lines
2.9 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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import "runtime"
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import "time"
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func i32receiver(c chan int32, strobe chan bool) {
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if <-c != 123 { panic("i32 value") }
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strobe <- true
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}
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func i32sender(c chan int32, strobe chan bool) {
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c <- 234;
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strobe <- true
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}
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func i64receiver(c chan int64, strobe chan bool) {
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if <-c != 123456 { panic("i64 value") }
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strobe <- true
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}
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func i64sender(c chan int64, strobe chan bool) {
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c <- 234567;
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strobe <- true
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}
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func breceiver(c chan bool, strobe chan bool) {
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if ! <-c { panic("b value") }
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strobe <- true
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}
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func bsender(c chan bool, strobe chan bool) {
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c <- true;
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strobe <- true
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}
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func sreceiver(c chan string, strobe chan bool) {
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if <-c != "hello" { panic("s value") }
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strobe <- true
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}
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func ssender(c chan string, strobe chan bool) {
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c <- "hello again";
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strobe <- true
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}
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var ticker = time.Tick(10*1000); // 10 us
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func sleep() {
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<-ticker;
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<-ticker;
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runtime.Gosched();
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runtime.Gosched();
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runtime.Gosched();
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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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var sync = make(chan bool);
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for buffer := 0; buffer < 2; buffer++ {
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c32 := make(chan int32, buffer);
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c64 := make(chan int64, buffer);
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cb := make(chan bool, buffer);
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cs := make(chan string, buffer);
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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, sync);
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sleep();
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ok = c32 <- 123;
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if !ok { panic("i32receiver buffer=", buffer) }
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<-sync;
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go i32sender(c32, sync);
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if buffer > 0 { <-sync } else { sleep() }
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i32, ok = <-c32;
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if !ok { panic("i32sender buffer=", buffer) }
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if i32 != 234 { panic("i32sender value") }
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if buffer == 0 { <-sync }
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go i64receiver(c64, sync);
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sleep();
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ok = c64 <- 123456;
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if !ok { panic("i64receiver") }
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<-sync;
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go i64sender(c64, sync);
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if buffer > 0 { <-sync } else { sleep() }
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i64, ok = <-c64;
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if !ok { panic("i64sender") }
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if i64 != 234567 { panic("i64sender value") }
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if buffer == 0 { <-sync }
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go breceiver(cb, sync);
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sleep();
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ok = cb <- true;
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if !ok { panic("breceiver") }
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<-sync;
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go bsender(cb, sync);
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if buffer > 0 { <-sync } else { sleep() }
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b, ok = <-cb;
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if !ok { panic("bsender") }
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if !b{ panic("bsender value") }
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if buffer == 0 { <-sync }
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go sreceiver(cs, sync);
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sleep();
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ok = cs <- "hello";
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if !ok { panic("sreceiver") }
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<-sync;
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go ssender(cs, sync);
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if buffer > 0 { <-sync } else { sleep() }
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s, ok = <-cs;
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if !ok { panic("ssender") }
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if s != "hello again" { panic("ssender value") }
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if buffer == 0 { <-sync }
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}
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print("PASS\n")
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}
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