More useful help; disable broken -once

Author: Jeremiah Roth

README.md

@@ -1,4 +1,4 @@
-# uptop
+# uptop [![Build Status](https://travis-ci.org/rothwerx/uptop.svg?branch=master)](https://travis-ci.org/rothwerx/uptop)
 > Top-like tool for displaying per-process USS (unique set size) and PSS (proportional set size) memory usage
 
 Standard Linux memory observation tools will show you the resident set size (RSS or RES) and virtual memory size (VMSIZE or VIRT) for each process, but neither are useful for giving you actual memory usage. RSS is more useful than VMSIZE as a general measurement, but RSS still includes the full memory consumed by each shared library. Here's a simplistic example: if you have 10 processes that each use 20kB of memory, and they all use the library foo.so which consumes 10kB of memory, each process will report 30kB memory usage even though foo.so only takes 10kB total.

go.mod

@@ -2,7 +2,7 @@ module github.com/rothwerx/uptop
 
 require (
 	github.com/cjbassi/drawille-go v0.1.0 // indirect
-	github.com/gizak/termui v0.0.0-20190214045005-bb0b559103cb // indirect
+	github.com/gizak/termui v0.0.0-20190214045005-bb0b559103cb
 	github.com/mattn/go-runewidth v0.0.4 // indirect
 	github.com/mitchellh/go-wordwrap v1.0.0 // indirect
 )

main.go

@@ -21,7 +21,7 @@ import (
 )
 
 // Program version
-const version = "0.2"
+const version = "0.3"
 
 // UID->username map cache
 var ucache = make(map[uint32]string)
@@ -197,15 +197,16 @@ func processIt(fpath string) (*Process, bool) {
 	return nil, false
 }
 
+// Fix this
 // Print header and then the contents of each Process
-func printProcesses(a []*Process) {
-	fmt.Printf("%6s  %-16s %-14s %5s  %5s  %5s  %5s  %-80s",
-		"PID", "Name", "User", "Swap", "USS", "PSS", "RSS", "Command")
-	for _, p := range a {
-		fmt.Printf("%6d  %-16s %-14s %5d  %5d  %5d  %5d  %-80s",
-			p.PID, p.Name, p.User, p.Swap, p.USS, p.PSS, p.RSS, p.Command)
-	}
-}
+// func printProcesses(a []*Process) {
+// 	fmt.Printf("%6s  %-16s %-14s %5s  %5s  %5s  %5s  %-80s",
+// 		"PID", "Name", "User", "Swap", "USS", "PSS", "RSS", "Command")
+// 	for _, p := range a {
+// 		fmt.Printf("%6d  %-16s %-14s %5d  %5d  %5d  %5d  %-80s",
+// 			p.PID, p.Name, p.User, p.Swap, p.USS, p.PSS, p.RSS, p.Command)
+// 	}
+// }
 
 // Formats the processes for the termui table
 func tableFormat(a []*Process) [][]string {
@@ -288,18 +289,23 @@ func runTermui() {
 }
 
 func main() {
+	flag.Usage = func() {
+		fmt.Fprintf(os.Stderr, "Once running, hit n, r, p, s, or u to sort by Name, RSS, PSS, SwapPSS, or USS. RSS is default.\n")
+		flag.PrintDefaults()
+		os.Exit(0)
+	}
 	wantVersion := flag.Bool("version", false, "Print the version")
-	wantOnce := flag.Bool("once", false, "Print table once and exit")
-	flag.StringVar(&sortKey, "sort", "rss", "Sort by name, rss, pss, swap, or uss")
+	// wantOnce := flag.Bool("once", false, "Print table once and exit")
+	flag.StringVar(&sortKey, "sort", "rss", "Start sorted by name, rss, pss, swap, or uss")
 	flag.Parse()
 	if *wantVersion {
 		fmt.Println(version)
 		os.Exit(0)
 	}
-	if *wantOnce {
-		procs := GetProcesses("/proc")
-		printProcesses(procs)
-		os.Exit(0)
-	}
+	// if *wantOnce {
+	// 	procs := GetProcesses("/proc")
+	// 	printProcesses(procs)
+	// 	os.Exit(0)
+	// }
 	runTermui()
 }