mirror of
https://github.com/42wim/matterbridge.git
synced 2024-12-21 10:32:35 +01:00
32 lines
862 B
Go
32 lines
862 B
Go
|
// Copyright 2014 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.
|
||
|
|
|
||
|
|
// +build windows
|
||
|
|
// +build go1.3
|
||
|
|
|
||
|
|
package svc
|
||
|
|
|
||
|
|
import "unsafe"
|
||
|
|
|
||
|
|
const ptrSize = 4 << (^uintptr(0) >> 63) // unsafe.Sizeof(uintptr(0)) but an ideal const
|
||
|
|
|
||
|
|
// Should be a built-in for unsafe.Pointer?
|
||
|
|
func add(p unsafe.Pointer, x uintptr) unsafe.Pointer {
|
||
|
|
return unsafe.Pointer(uintptr(p) + x)
|
||
|
|
}
|
||
|
|
|
||
|
|
// funcPC returns the entry PC of the function f.
|
||
|
|
// It assumes that f is a func value. Otherwise the behavior is undefined.
|
||
|
|
func funcPC(f interface{}) uintptr {
|
||
|
|
return **(**uintptr)(add(unsafe.Pointer(&f), ptrSize))
|
||
|
|
}
|
||
|
|
|
||
|
|
// from sys_386.s and sys_amd64.s
|
||
|
|
func servicectlhandler(ctl uint32) uintptr
|
||
|
|
func servicemain(argc uint32, argv **uint16)
|
||
|
|
|
||
|
|
func getServiceMain(r *uintptr) {
|
||
|
|
*r = funcPC(servicemain)
|
||
|
|
}
|