Testing for linux cpuinfo

internal/memory/win_ram.go

@@ -0,0 +1,55 @@
+//go:build windows
+
+package memory
+
+import (
+	"log"
+	"unsafe"
+
+	"rpi5-health/internal/windows_system"
+
+	"golang.org/x/sys/windows"
+)
+
+type DWORD uint32
+type DWORDLONG uint64
+
+type memoryStatusEx struct {
+	/*
+	 * Struct for storing memory status information.
+	 *
+	 * It gets populated via syscall.
+	 */
+	dwLength                DWORD
+	dwMemoryLoad            DWORD
+	ullTotalPhys            DWORDLONG
+	ullAvailPhys            DWORDLONG
+	ullTotalPageFile        DWORDLONG
+	ullAvailPageFile        DWORDLONG
+	ullTotalVirtual         DWORDLONG
+	ullAvailVirtual         DWORDLONG
+	ullAvailExtendedVirtual DWORDLONG
+}
+
+func getWinRamInfo(procGlobalMemoryStatusEx *windows.LazyProc) MemoryInformation {
+	var mem memoryStatusEx
+
+	// * Windows requires the dwLength field to be set to the struct's size
+	// * before execution so it knows which OS struct version is being used.
+	mem.dwLength = DWORD(unsafe.Sizeof(mem))
+
+	ret, _, err := procGlobalMemoryStatusEx.Call(uintptr(unsafe.Pointer(&mem))) // exec syscall
+
+	if ret == 0 { // winapi syscalls return 0 on failure
+		log.Fatalf("GlobalMemoryStatusEx failed: %v", err)
+	}
+
+	return MemoryInformation{
+		SystemMemory:    uint64(mem.ullTotalPhys),
+		AvailableMemory: uint64(mem.ullAvailPhys),
+	}
+}
+
+func GetRamInformation() (MemoryInformation, error) {
+	return getWinRamInfo(windows_system.GetWindowsTools().ProcGlobalMemoryStatusEx), nil
+}