7a9389330e
gcc/: * gcc.c (default_compilers): Add entry for ".go". * common.opt: Add -static-libgo as a driver option. * doc/install.texi (Configuration): Mention libgo as an option for --enable-shared. Mention go as an option for --enable-languages. * doc/invoke.texi (Overall Options): Mention .go as a file name suffix. Mention go as a -x option. * doc/frontends.texi (G++ and GCC): Mention Go as a supported language. * doc/sourcebuild.texi (Top Level): Mention libgo. * doc/standards.texi (Standards): Add section on Go language. Move references for other languages into their own section. * doc/contrib.texi (Contributors): Mention that I contributed the Go frontend. gcc/testsuite/: * lib/go.exp: New file. * lib/go-dg.exp: New file. * lib/go-torture.exp: New file. * lib/target-supports.exp (check_compile): Match // Go. From-SVN: r167407
92 lines
1.5 KiB
Go
92 lines
1.5 KiB
Go
// 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.
|
|
|
|
// GOMAXPROCS=10 gotest
|
|
|
|
package sync_test
|
|
|
|
import (
|
|
"runtime"
|
|
. "sync"
|
|
"testing"
|
|
)
|
|
|
|
func HammerSemaphore(s *uint32, loops int, cdone chan bool) {
|
|
for i := 0; i < loops; i++ {
|
|
runtime.Semacquire(s)
|
|
runtime.Semrelease(s)
|
|
}
|
|
cdone <- true
|
|
}
|
|
|
|
func TestSemaphore(t *testing.T) {
|
|
s := new(uint32)
|
|
*s = 1
|
|
c := make(chan bool)
|
|
for i := 0; i < 10; i++ {
|
|
go HammerSemaphore(s, 1000, c)
|
|
}
|
|
for i := 0; i < 10; i++ {
|
|
<-c
|
|
}
|
|
}
|
|
|
|
func BenchmarkUncontendedSemaphore(b *testing.B) {
|
|
s := new(uint32)
|
|
*s = 1
|
|
HammerSemaphore(s, b.N, make(chan bool, 2))
|
|
}
|
|
|
|
func BenchmarkContendedSemaphore(b *testing.B) {
|
|
b.StopTimer()
|
|
s := new(uint32)
|
|
*s = 1
|
|
c := make(chan bool)
|
|
runtime.GOMAXPROCS(2)
|
|
b.StartTimer()
|
|
|
|
go HammerSemaphore(s, b.N/2, c)
|
|
go HammerSemaphore(s, b.N/2, c)
|
|
<-c
|
|
<-c
|
|
}
|
|
|
|
|
|
func HammerMutex(m *Mutex, loops int, cdone chan bool) {
|
|
for i := 0; i < loops; i++ {
|
|
m.Lock()
|
|
m.Unlock()
|
|
}
|
|
cdone <- true
|
|
}
|
|
|
|
func TestMutex(t *testing.T) {
|
|
m := new(Mutex)
|
|
c := make(chan bool)
|
|
for i := 0; i < 10; i++ {
|
|
go HammerMutex(m, 1000, c)
|
|
}
|
|
for i := 0; i < 10; i++ {
|
|
<-c
|
|
}
|
|
}
|
|
|
|
func BenchmarkUncontendedMutex(b *testing.B) {
|
|
m := new(Mutex)
|
|
HammerMutex(m, b.N, make(chan bool, 2))
|
|
}
|
|
|
|
func BenchmarkContendedMutex(b *testing.B) {
|
|
b.StopTimer()
|
|
m := new(Mutex)
|
|
c := make(chan bool)
|
|
runtime.GOMAXPROCS(2)
|
|
b.StartTimer()
|
|
|
|
go HammerMutex(m, b.N/2, c)
|
|
go HammerMutex(m, b.N/2, c)
|
|
<-c
|
|
<-c
|
|
}
|