diff options
author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
---|---|---|
committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/go.test/test/chan/fifo.go | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/go.test/test/chan/fifo.go')
-rw-r--r-- | gcc-4.9/gcc/testsuite/go.test/test/chan/fifo.go | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/go.test/test/chan/fifo.go b/gcc-4.9/gcc/testsuite/go.test/test/chan/fifo.go new file mode 100644 index 000000000..70d20b31f --- /dev/null +++ b/gcc-4.9/gcc/testsuite/go.test/test/chan/fifo.go @@ -0,0 +1,57 @@ +// run + +// Copyright 2009 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. + +// Test that unbuffered channels act as pure fifos. + +package main + +import "os" + +const N = 10 + +func AsynchFifo() { + ch := make(chan int, N) + for i := 0; i < N; i++ { + ch <- i + } + for i := 0; i < N; i++ { + if <-ch != i { + print("bad receive\n") + os.Exit(1) + } + } +} + +func Chain(ch <-chan int, val int, in <-chan int, out chan<- int) { + <-in + if <-ch != val { + panic(val) + } + out <- 1 +} + +// thread together a daisy chain to read the elements in sequence +func SynchFifo() { + ch := make(chan int) + in := make(chan int) + start := in + for i := 0; i < N; i++ { + out := make(chan int) + go Chain(ch, i, in, out) + in = out + } + start <- 0 + for i := 0; i < N; i++ { + ch <- i + } + <-in +} + +func main() { + AsynchFifo() + SynchFifo() +} + |