mirror of https://github.com/docker/docs.git
45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
package system
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import (
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"syscall"
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"unsafe"
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)
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var (
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modkernel32 = syscall.NewLazyDLL("kernel32.dll")
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procGlobalMemoryStatusEx = modkernel32.NewProc("GlobalMemoryStatusEx")
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)
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// https://msdn.microsoft.com/en-us/library/windows/desktop/aa366589(v=vs.85).aspx
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// https://msdn.microsoft.com/en-us/library/windows/desktop/aa366770(v=vs.85).aspx
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type memorystatusex struct {
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dwLength uint32
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dwMemoryLoad uint32
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ullTotalPhys uint64
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ullAvailPhys uint64
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ullTotalPageFile uint64
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ullAvailPageFile uint64
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ullTotalVirtual uint64
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ullAvailVirtual uint64
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ullAvailExtendedVirtual uint64
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}
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// ReadMemInfo retrieves memory statistics of the host system and returns a
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// MemInfo type.
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func ReadMemInfo() (*MemInfo, error) {
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msi := &memorystatusex{
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dwLength: 64,
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}
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r1, _, _ := procGlobalMemoryStatusEx.Call(uintptr(unsafe.Pointer(msi)))
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if r1 == 0 {
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return &MemInfo{}, nil
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}
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return &MemInfo{
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MemTotal: int64(msi.ullTotalPhys),
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MemFree: int64(msi.ullAvailPhys),
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SwapTotal: int64(msi.ullTotalPageFile),
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SwapFree: int64(msi.ullAvailPageFile),
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}, nil
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}
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