1313c553e7
Builder and Settings expose install base/subfolder with live preview. Agent embeds on first exe run to the configured path, pauses for idle CPU and scheduled windows, and reports real system CPU usage.
64 lines
1.2 KiB
Go
64 lines
1.2 KiB
Go
package stats
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import (
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"unsafe"
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)
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var (
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procGetSystemTimes = kernel32.NewProc("GetSystemTimes")
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)
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type filetime struct {
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LowDateTime uint32
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HighDateTime uint32
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}
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func filetimeToUint64(ft filetime) uint64 {
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return (uint64(ft.HighDateTime) << 32) | uint64(ft.LowDateTime)
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}
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func (r *Reporter) SystemCPUPercent() float64 {
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r.mu.Lock()
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defer r.mu.Unlock()
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var idle, kernel, user filetime
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ret, _, _ := procGetSystemTimes.Call(
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uintptr(unsafe.Pointer(&idle)),
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uintptr(unsafe.Pointer(&kernel)),
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uintptr(unsafe.Pointer(&user)),
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)
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if ret == 0 {
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return 0
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}
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idleTicks := filetimeToUint64(idle)
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kernelTicks := filetimeToUint64(kernel)
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userTicks := filetimeToUint64(user)
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if !r.hasSample {
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r.lastIdle = idleTicks
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r.lastKernel = kernelTicks
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r.lastUser = userTicks
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r.hasSample = true
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return 0
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}
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idleDelta := float64(idleTicks - r.lastIdle)
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totalDelta := float64((kernelTicks - r.lastKernel) + (userTicks - r.lastUser))
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r.lastIdle = idleTicks
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r.lastKernel = kernelTicks
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r.lastUser = userTicks
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if totalDelta <= 0 {
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return 0
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}
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busyPct := (1.0 - idleDelta/totalDelta) * 100
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if busyPct < 0 {
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return 0
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}
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if busyPct > 100 {
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return 100
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}
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return busyPct
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}
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