syncthing/lib/ur/memsize_windows.go

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2014-11-16 20:13:20 +00:00
// Copyright (C) 2014 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at https://mozilla.org/MPL/2.0/.
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package ur
import (
"encoding/binary"
"syscall"
"unsafe"
)
var (
kernel32, _ = syscall.LoadLibrary("kernel32.dll")
globalMemoryStatusEx, _ = syscall.GetProcAddress(kernel32, "GlobalMemoryStatusEx")
)
func memorySize() (int64, error) {
var memoryStatusEx [64]byte
binary.LittleEndian.PutUint32(memoryStatusEx[:], 64)
ret, _, callErr := syscall.Syscall(uintptr(globalMemoryStatusEx), 1, uintptr(unsafe.Pointer(&memoryStatusEx[0])), 0, 0)
if ret == 0 {
return 0, callErr
}
return int64(binary.LittleEndian.Uint64(memoryStatusEx[8:])), nil
}