adding lots of different stats

go/stats/memory.go

@@ -0,0 +1,38 @@
+// +build !windows
+
+package stats
+
+import (
+	"runtime"
+	"syscall"
+)
+
+type MemStatus struct {
+	Goroutines int
+	All        uint64
+	Used       uint64
+	Free       uint64
+	Self       uint64
+	Heap       uint64
+	Stack      uint64
+}
+
+func MemStat() MemStatus {
+	mem := MemStatus{}
+	mem.Goroutines = runtime.NumGoroutine()
+	memStat := new(runtime.MemStats)
+	runtime.ReadMemStats(memStat)
+	mem.Self = memStat.Alloc
+	mem.Heap = memStat.HeapAlloc
+	mem.Stack = memStat.StackInuse
+
+	//system memory usage
+	sysInfo := new(syscall.Sysinfo_t)
+	err := syscall.Sysinfo(sysInfo)
+	if err == nil {
+		mem.All = sysInfo.Totalram //* uint64(syscall.Getpagesize())
+		mem.Free = sysInfo.Freeram //* uint64(syscall.Getpagesize())
+		mem.Used = mem.All - mem.Free
+	}
+	return mem
+}