go syscall_windows 源码
golang syscall_windows 代码
文件路径：/src/runtime/testdata/testprog/syscall_windows.go
// Copyright 2015 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.
package main
import (
"internal/syscall/windows"
"runtime"
"sync"
"syscall"
"unsafe"
)
func init() {
register("RaiseException", RaiseException)
register("ZeroDivisionException", ZeroDivisionException)
register("StackMemory", StackMemory)
}
func RaiseException() {
const EXCEPTION_NONCONTINUABLE = 1
mod := syscall.MustLoadDLL("kernel32.dll")
proc := mod.MustFindProc("RaiseException")
proc.Call(0xbad, EXCEPTION_NONCONTINUABLE, 0, 0)
println("RaiseException should not return")
}
func ZeroDivisionException() {
x := 1
y := 0
z := x / y
println(z)
}
func getPagefileUsage() (uintptr, error) {
p, err := syscall.GetCurrentProcess()
if err != nil {
return 0, err
}
var m windows.PROCESS_MEMORY_COUNTERS
err = windows.GetProcessMemoryInfo(p, &m, uint32(unsafe.Sizeof(m)))
if err != nil {
return 0, err
}
return m.PagefileUsage, nil
}
func StackMemory() {
mem1, err := getPagefileUsage()
if err != nil {
panic(err)
}
const threadCount = 100
var wg sync.WaitGroup
for i := 0; i < threadCount; i++ {
wg.Add(1)
go func() {
runtime.LockOSThread()
wg.Done()
select {}
}()
}
wg.Wait()
mem2, err := getPagefileUsage()
if err != nil {
panic(err)
}
print((mem2 - mem1) / threadCount)
}
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