mirror of
https://github.com/prometheus-community/windows_exporter.git
synced 2026-02-08 14:06:38 +00:00
95 lines
2.7 KiB
Go
95 lines
2.7 KiB
Go
package psapi
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import (
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"unsafe"
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"golang.org/x/sys/windows"
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)
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// LPPerformanceInformation is a wrapper of the PERFORMANCE_INFORMATION struct.
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// https://docs.microsoft.com/en-us/windows/win32/api/psapi/ns-psapi-performance_information
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type LPPerformanceInformation struct {
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cb uint32
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CommitTotal *uint32
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CommitLimit *uint32
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CommitPeak *uint32
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PhysicalTotal *uint32
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PhysicalAvailable *uint32
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SystemCache *uint32
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KernelTotal *uint32
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KernelPaged *uint32
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KernelNonpaged *uint32
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PageSize *uint32
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HandleCount uint32
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ProcessCount uint32
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ThreadCount uint32
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}
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// PerformanceInformation is a dereferenced version of LPPerformanceInformation
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type PerformanceInformation struct {
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cb uint32
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CommitTotal uint32
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CommitLimit uint32
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CommitPeak uint32
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PhysicalTotal uint32
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PhysicalAvailable uint32
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SystemCache uint32
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KernelTotal uint32
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KernelPaged uint32
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KernelNonpaged uint32
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PageSize uint32
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HandleCount uint32
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ProcessCount uint32
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ThreadCount uint32
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}
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var (
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psapi = windows.NewLazySystemDLL("psapi.dll")
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procGetPerformanceInfo = psapi.NewProc("GetPerformanceInfo")
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)
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// GetLPPerformanceInfo retrieves the performance values contained in the LPPerformanceInformation structure.
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// https://docs.microsoft.com/en-us/windows/win32/api/psapi/nf-psapi-getperformanceinfo
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func GetLPPerformanceInfo() (LPPerformanceInformation, error) {
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var pi LPPerformanceInformation
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size := (uint32)(unsafe.Sizeof(pi))
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pi.cb = size
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r1, _, err := procGetPerformanceInfo.Call(uintptr(unsafe.Pointer(&pi)), uintptr(size))
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if ret := *(*bool)(unsafe.Pointer(&r1)); !ret {
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return LPPerformanceInformation{}, err
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}
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return pi, nil
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}
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// GetPerformanceInfo returns the dereferenced version of GetLPPerformanceInfo.
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func GetPerformanceInfo() (PerformanceInformation, error) {
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var lppi LPPerformanceInformation
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size := (uint32)(unsafe.Sizeof(lppi))
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lppi.cb = size
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r1, _, err := procGetPerformanceInfo.Call(uintptr(unsafe.Pointer(&lppi)), uintptr(size))
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if ret := *(*bool)(unsafe.Pointer(&r1)); !ret {
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return PerformanceInformation{}, err
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}
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var pi PerformanceInformation
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pi.cb = lppi.cb
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pi.CommitTotal = *(lppi.CommitTotal)
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pi.CommitLimit = *(lppi.CommitLimit)
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pi.CommitPeak = *(lppi.CommitPeak)
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pi.PhysicalTotal = *(lppi.PhysicalTotal)
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pi.PhysicalAvailable = *(lppi.PhysicalAvailable)
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pi.SystemCache = *(lppi.SystemCache)
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pi.KernelTotal = *(lppi.KernelTotal)
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pi.KernelPaged = *(lppi.KernelPaged)
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pi.KernelNonpaged = *(lppi.KernelNonpaged)
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pi.PageSize = *(lppi.PageSize)
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pi.HandleCount = lppi.HandleCount
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pi.ProcessCount = lppi.ProcessCount
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pi.ThreadCount = lppi.ThreadCount
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return pi, nil
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}
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