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https://github.com/golang/go
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018bcc3535
1. In CL 5989057, I made a mistake in the last minute change. "MOVW.W R4, -4(SP)" should really be "MOVW.W R4, -4(R13)", as 5l will rewrite offset for SP. 2. misc/cgo/test/issue1560.go tests for parallel sleep of 1s, but on ARM, the deadline is frequently missed, so change sleep time to 2s on ARM. R=golang-dev, dave, rsc CC=golang-dev https://golang.org/cl/6202043
53 lines
1.0 KiB
Go
53 lines
1.0 KiB
Go
// Copyright 2011 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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package cgotest
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/*
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#include <unistd.h>
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unsigned int sleep(unsigned int seconds);
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extern void BackgroundSleep(int);
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void twoSleep(int);
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*/
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import "C"
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import (
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"runtime"
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"testing"
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"time"
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)
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var sleepDone = make(chan bool)
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func parallelSleep(n int) {
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C.twoSleep(C.int(n))
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<-sleepDone
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}
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//export BackgroundSleep
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func BackgroundSleep(n int) {
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go func() {
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C.sleep(C.uint(n))
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sleepDone <- true
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}()
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}
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func testParallelSleep(t *testing.T) {
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sleepSec := 1
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if runtime.GOARCH == "arm" {
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// on ARM, the 1.3s deadline is frequently missed,
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// so increase sleep time to 2s
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sleepSec = 2
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}
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start := time.Now()
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parallelSleep(sleepSec)
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dt := time.Now().Sub(start)
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// bug used to run sleeps in serial, producing a 2*sleepSec-second delay.
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if dt >= time.Duration(sleepSec)*1300*time.Millisecond {
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t.Fatalf("parallel %d-second sleeps slept for %f seconds", sleepSec, dt.Seconds())
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}
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}
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