From 25a3c47defd1b9dab22942eeffd10b550e8ac527 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Fri, 28 Mar 2014 12:18:01 -0700
Subject: [PATCH]  Issue 65: 	weed-fs 0.51 does not compile under windows

---
 go/stats/disk.go                | 15 ++-------------
 go/stats/disk_notsupported.go   |  9 +++++++++
 go/stats/disk_supported.go      | 19 +++++++++++++++++++
 go/stats/disk_windows.go        | 18 ------------------
 go/stats/memory.go              | 12 +-----------
 go/stats/memory_notsupported.go |  9 +++++++++
 go/stats/memory_supported.go    | 18 ++++++++++++++++++
 go/stats/memory_windows.go      | 29 -----------------------------
 8 files changed, 58 insertions(+), 71 deletions(-)
 create mode 100644 go/stats/disk_notsupported.go
 create mode 100644 go/stats/disk_supported.go
 delete mode 100644 go/stats/disk_windows.go
 create mode 100644 go/stats/memory_notsupported.go
 create mode 100644 go/stats/memory_supported.go
 delete mode 100644 go/stats/memory_windows.go

diff --git a/go/stats/disk.go b/go/stats/disk.go
index d0ffcd679..d5275e571 100644
--- a/go/stats/disk.go
+++ b/go/stats/disk.go
@@ -1,10 +1,6 @@
-// +build !windows
-
 package stats
 
-import (
-	"syscall"
-)
+import ()
 
 type DiskStatus struct {
 	Dir  string
@@ -15,13 +11,6 @@ type DiskStatus struct {
 
 func NewDiskStatus(path string) (disk *DiskStatus) {
 	disk = &DiskStatus{Dir: path}
-	fs := syscall.Statfs_t{}
-	err := syscall.Statfs(path, &fs)
-	if err != nil {
-		return
-	}
-	disk.All = fs.Blocks * uint64(fs.Bsize)
-	disk.Free = fs.Bfree * uint64(fs.Bsize)
-	disk.Used = disk.All - disk.Free
+	disk.fillInStatus()
 	return
 }
diff --git a/go/stats/disk_notsupported.go b/go/stats/disk_notsupported.go
new file mode 100644
index 000000000..1f025ca8e
--- /dev/null
+++ b/go/stats/disk_notsupported.go
@@ -0,0 +1,9 @@
+// +build windows openbsd netbsd plan9
+
+package stats
+
+import ()
+
+func (disk *DiskStatus) fillInStatus() {
+	return
+}
diff --git a/go/stats/disk_supported.go b/go/stats/disk_supported.go
new file mode 100644
index 000000000..018628b9b
--- /dev/null
+++ b/go/stats/disk_supported.go
@@ -0,0 +1,19 @@
+// +build !windows,!openbsd,!netbsd,!plan9
+
+package stats
+
+import (
+	"syscall"
+)
+
+func (disk *DiskStatus) fillInStatus() {
+	fs := syscall.Statfs_t{}
+	err := syscall.Statfs(disk.Dir, &fs)
+	if err != nil {
+		return
+	}
+	disk.All = fs.Blocks * uint64(fs.Bsize)
+	disk.Free = fs.Bfree * uint64(fs.Bsize)
+	disk.Used = disk.All - disk.Free
+	return
+}
diff --git a/go/stats/disk_windows.go b/go/stats/disk_windows.go
deleted file mode 100644
index e3fd7a2ff..000000000
--- a/go/stats/disk_windows.go
+++ /dev/null
@@ -1,18 +0,0 @@
-// +build windows
-
-package stats
-
-import (
-	"syscall"
-)
-
-type DiskStatus struct {
-	Dir  string
-	All  uint64
-	Used uint64
-	Free uint64
-}
-
-func NewDiskStatus(path string) (disk *DiskStatus) {
-	return
-}
diff --git a/go/stats/memory.go b/go/stats/memory.go
index b899e1e4e..0700d92de 100644
--- a/go/stats/memory.go
+++ b/go/stats/memory.go
@@ -1,10 +1,7 @@
-// +build !windows
-
 package stats
 
 import (
 	"runtime"
-	"syscall"
 )
 
 type MemStatus struct {
@@ -26,13 +23,6 @@ func MemStat() MemStatus {
 	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
-	}
+	mem.fillInStatus()
 	return mem
 }
diff --git a/go/stats/memory_notsupported.go b/go/stats/memory_notsupported.go
new file mode 100644
index 000000000..64c3d7c2f
--- /dev/null
+++ b/go/stats/memory_notsupported.go
@@ -0,0 +1,9 @@
+// +build !linux
+
+package stats
+
+import ()
+
+func (mem *MemStatus) fillInStatus() {
+	return
+}
diff --git a/go/stats/memory_supported.go b/go/stats/memory_supported.go
new file mode 100644
index 000000000..fd0c36d72
--- /dev/null
+++ b/go/stats/memory_supported.go
@@ -0,0 +1,18 @@
+// +build linux
+
+package stats
+
+import (
+	"syscall"
+)
+
+func (mem *MemStatus) fillInStatus() {
+	//system memory usage
+	sysInfo := new(syscall.Sysinfo_t)
+	err := syscall.Sysinfo(sysInfo)
+	if err == nil {
+		mem.All = uint64(sysInfo.Totalram) //* uint64(syscall.Getpagesize())
+		mem.Free = uint64(sysInfo.Freeram) //* uint64(syscall.Getpagesize())
+		mem.Used = mem.All - mem.Free
+	}
+}
diff --git a/go/stats/memory_windows.go b/go/stats/memory_windows.go
deleted file mode 100644
index bb1f9cbbf..000000000
--- a/go/stats/memory_windows.go
+++ /dev/null
@@ -1,29 +0,0 @@
-// +build windows
-
-package stats
-
-import (
-	"runtime"
-)
-
-type MemStatus struct {
-	Goroutines uint32
-	All        uint32
-	Used       uint32
-	Free       uint32
-	Self       uint64
-	Heap       uint64
-	Stack      uint64
-}
-
-func MemStat() MemStatus {
-	memStat := new(runtime.MemStats)
-	mem.Goroutines = runtime.NumGoroutine()
-	runtime.ReadMemStats(memStat)
-	mem := MemStatus{}
-	mem.Self = memStat.Alloc
-	mem.Heap = memStat.HeapAlloc
-	mem.Stack = memStat.StackInuse
-
-	return mem
-}