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Current Path: /opt/golang/1.22.0/src/runtime/testdata/testprog

opt / golang / 1.22.0 / src / runtime / testdata / testprog /

📁 ..
📄 abort.go(449 B)
📄 badtraceback.go(1.18 KB)
📄 checkptr.go(2.42 KB)
📄 crash.go(2.47 KB)
📄 crashdump.go(917 B)
📄 deadlock.go(6.5 KB)
📄 framepointer.go(839 B)
📄 framepointer_amd64.s(248 B)
📄 framepointer_arm64.s(249 B)
📄 gc.go(12.08 KB)
📄 lockosthread.go(6.54 KB)
📄 main.go(651 B)
📄 map.go(1.26 KB)
📄 memprof.go(869 B)
📄 misc.go(306 B)
📄 numcpu_freebsd.go(3.38 KB)
📄 panicprint.go(2.22 KB)
📄 panicrace.go(414 B)
📄 preempt.go(1.61 KB)
📄 segv.go(479 B)
📄 segv_linux.go(517 B)
📄 signal.go(861 B)
📄 sleep.go(378 B)
📄 stringconcat.go(443 B)
📄 syscall_windows.go(1.5 KB)
📄 syscalls.go(256 B)
📄 syscalls_linux.go(1.23 KB)
📄 syscalls_none.go(455 B)
📄 timeprof.go(813 B)
📄 traceback_ancestors.go(2.07 KB)
📄 unsafe.go(195 B)
📄 vdso.go(1005 B)

Editing: 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)
	}
	// assumes that this process creates 1 thread for each
	// thread locked goroutine plus extra 10 threads
	// like sysmon and others
	print((mem2 - mem1) / (threadCount + 10))
}

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Editing: syscall_windows.go

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