feat: create standalone native fnOS repository

2026-10-02 15:19:09 +08:00
parent 69f3c30fab
commit 6725fc131d
492 changed files with 94023 additions and 3 deletions
@@ -0,0 +1,105 @@
+//go:build windows
+
+package sysinfo
+
+import (
+	"os"
+	"syscall"
+	"unsafe"
+)
+
+var (
+	kernel32                 = syscall.NewLazyDLL("kernel32.dll")
+	procGetSystemTimes       = kernel32.NewProc("GetSystemTimes")
+	procGlobalMemoryStatusEx = kernel32.NewProc("GlobalMemoryStatusEx")
+	procGetDiskFreeSpaceExW  = kernel32.NewProc("GetDiskFreeSpaceExW")
+	procGetTickCount64       = kernel32.NewProc("GetTickCount64")
+)
+
+type memoryStatusEx struct {
+	Length               uint32
+	MemoryLoad           uint32
+	TotalPhys            uint64
+	AvailPhys            uint64
+	TotalPageFile        uint64
+	AvailPageFile        uint64
+	TotalVirtual         uint64
+	AvailVirtual         uint64
+	AvailExtendedVirtual uint64
+}
+
+func readPlatform() (Stats, CPUSample) {
+	var (
+		stats  Stats
+		sample CPUSample
+	)
+
+	var idle, kernel, user syscall.Filetime
+	if ret, _, _ := procGetSystemTimes.Call(
+		uintptr(unsafe.Pointer(&idle)),
+		uintptr(unsafe.Pointer(&kernel)),
+		uintptr(unsafe.Pointer(&user)),
+	); ret != 0 {
+		// kernel 时间包含 idle，因此总时间 = kernel + user
+		sample = CPUSample{
+			Total: filetimeTicks(kernel) + filetimeTicks(user),
+			Idle:  filetimeTicks(idle),
+		}
+	}
+
+	var mem memoryStatusEx
+	mem.Length = uint32(unsafe.Sizeof(mem))
+	if ret, _, _ := procGlobalMemoryStatusEx.Call(uintptr(unsafe.Pointer(&mem))); ret != 0 {
+		stats.MemTotalBytes = mem.TotalPhys
+		stats.MemUsedBytes = mem.TotalPhys - mem.AvailPhys
+	}
+
+	stats.DiskTotalBytes, stats.DiskUsedBytes = diskUsage(volumeRoot())
+	return stats, sample
+}
+
+// volumeRoot 取当前工作目录所在盘符（Havline 的数据目录与工作目录同盘），失败时回落到 C:\
+func volumeRoot() string {
+	wd, err := os.Getwd()
+	if err != nil || len(wd) < 2 || wd[1] != ':' {
+		return `C:\`
+	}
+	return wd[:3]
+}
+
+func diskUsage(root string) (total, used uint64) {
+	rootPtr, err := syscall.UTF16PtrFromString(root)
+	if err != nil {
+		return 0, 0
+	}
+	var freeToCaller, totalBytes, totalFree uint64
+	ret, _, _ := procGetDiskFreeSpaceExW.Call(
+		uintptr(unsafe.Pointer(rootPtr)),
+		uintptr(unsafe.Pointer(&freeToCaller)),
+		uintptr(unsafe.Pointer(&totalBytes)),
+		uintptr(unsafe.Pointer(&totalFree)),
+	)
+	if ret == 0 || totalBytes == 0 {
+		return 0, 0
+	}
+	if totalFree > totalBytes {
+		return totalBytes, 0
+	}
+	return totalBytes, totalBytes - totalFree
+}
+
+// LoadAvg Windows 没有平均负载概念，固定返回 nil
+func LoadAvg() []float64 {
+	return nil
+}
+
+// UptimeSeconds 用 GetTickCount64 取系统运行秒数
+func UptimeSeconds() uint64 {
+	ret, _, _ := procGetTickCount64.Call()
+	return uint64(ret) / 1000
+}
+
+// filetimeTicks 把 FILETIME（100ns 单位）折算为 10ms 刻度，避免累加时溢出
+func filetimeTicks(ft syscall.Filetime) uint64 {
+	return (uint64(ft.HighDateTime)<<32 | uint64(ft.LowDateTime)) / 10000
+}