Add memusage option to view memory usage
@@ -9,17 +9,21 @@ import (
"os/signal"
"path/filepath"
"regexp"
+ "runtime"
"strconv"
"strings"
+ humanize "github.com/dustin/go-humanize"
"github.com/mitchellh/go-homedir"
)
+// A Command contains a action (a function to call) as well as information about how to autocomplete the command
type Command struct {
action func([]string)
completions []Completion
}
+// A StrCommand is similar to a command but keeps the name of the action
type StrCommand struct {
action string
completions []Completion
@@ -51,6 +55,7 @@ func init() {
"Pwd": Pwd,
"Open": Open,
"TabSwitch": TabSwitch,
+ "MemUsage": MemUsage,
}
}
@@ -104,6 +109,7 @@ func DefaultCommands() map[string]StrCommand {
"pwd": {"Pwd", []Completion{NoCompletion}},
"open": {"Open", []Completion{FileCompletion}},
"tabswitch": {"TabSwitch", []Completion{NoCompletion}},
+ "memusage": {"MemUsage", []Completion{NoCompletion}},
}
}
@@ -190,6 +196,7 @@ func PluginCmd(args []string) {
}
}
+// TabSwitch switches to a given tab either by name or by number
func TabSwitch(args []string) {
if len(args) > 0 {
num, err := strconv.Atoi(args[0])
@@ -218,6 +225,7 @@ func TabSwitch(args []string) {
}
}
+// Cd changes the current working directory
func Cd(args []string) {
if len(args) > 0 {
home, _ := homedir.Dir()
@@ -235,6 +243,21 @@ func Cd(args []string) {
}
}
+// MemUsage prints micro's memory usage
+// Alloc shows how many bytes are currently in use
+// Sys shows how many bytes have been requested from the operating system
+// NumGC shows how many times the GC has been run
+// Note that Go commonly reserves more memory from the OS than is currently in-use/required
+// Additionally, even if Go returns memory to the OS, the OS does not always claim it because
+// there may be plenty of memory to spare
+func MemUsage(args []string) {
+ var mem runtime.MemStats
+ runtime.ReadMemStats(&mem)
+
+ messenger.Message(fmt.Sprintf("Alloc: %v, Sys: %v, NumGC: %v", humanize.Bytes(mem.Alloc), humanize.Bytes(mem.Sys), mem.NumGC))
+}
+
+// Pwd prints the current working directory
func Pwd(args []string) {
wd, err := os.Getwd()
if err != nil {
@@ -244,6 +267,7 @@ func Pwd(args []string) {
}
}
+// Open opens a new buffer with a given filename
func Open(args []string) {
if len(args) > 0 {
filename := args[0]
@@ -256,6 +280,7 @@ func Open(args []string) {
}
}
+// ToggleLog toggles the log view
func ToggleLog(args []string) {
buffer := messenger.getBuffer()
if CurView().Type != vtLog {
@@ -271,6 +296,7 @@ func ToggleLog(args []string) {
}
}
+// Reload reloads all files (syntax files, colorschemes...)
func Reload(args []string) {
LoadAll()
}
