diff options
Diffstat (limited to 'tun/wintun/dll_windows.go')
-rw-r--r-- | tun/wintun/dll_windows.go | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/tun/wintun/dll_windows.go b/tun/wintun/dll_windows.go deleted file mode 100644 index 1ecd6d0..0000000 --- a/tun/wintun/dll_windows.go +++ /dev/null @@ -1,59 +0,0 @@ -/* SPDX-License-Identifier: MIT - * - * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved. - */ - -package wintun - -import ( - "fmt" - "sync" - "sync/atomic" - "unsafe" -) - -func newLazyDLL(name string, onLoad func(d *lazyDLL)) *lazyDLL { - return &lazyDLL{Name: name, onLoad: onLoad} -} - -func (d *lazyDLL) NewProc(name string) *lazyProc { - return &lazyProc{dll: d, Name: name} -} - -type lazyProc struct { - Name string - mu sync.Mutex - dll *lazyDLL - addr uintptr -} - -func (p *lazyProc) Find() error { - if atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(&p.addr))) != nil { - return nil - } - p.mu.Lock() - defer p.mu.Unlock() - if p.addr != 0 { - return nil - } - - err := p.dll.Load() - if err != nil { - return fmt.Errorf("Error loading %v DLL: %w", p.dll.Name, err) - } - addr, err := p.nameToAddr() - if err != nil { - return fmt.Errorf("Error getting %v address: %w", p.Name, err) - } - - atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(&p.addr)), unsafe.Pointer(addr)) - return nil -} - -func (p *lazyProc) Addr() uintptr { - err := p.Find() - if err != nil { - panic(err) - } - return p.addr -} |