From d60eba90a8faea861dec9f762c5a8a023c95214a Mon Sep 17 00:00:00 2001
From: mitchell <mitchellb@activestate.com>
Date: Tue, 19 Dec 2023 16:28:21 -0500
Subject: [PATCH] Iterate over processes asynchronously.

Iterating over processes synchronously on macOS is particularly quite slow.
---
 internal/osutils/osutils.go | 32 +++++++++++++++++++++-----------
 1 file changed, 21 insertions(+), 11 deletions(-)

diff --git a/internal/osutils/osutils.go b/internal/osutils/osutils.go
index 5c3e65782a..6a9e10ef32 100644
--- a/internal/osutils/osutils.go
+++ b/internal/osutils/osutils.go
@@ -8,6 +8,7 @@ import (
 	"path/filepath"
 	"runtime"
 	"strings"
+	"sync"
 
 	"github.com/shirou/gopsutil/v3/process"
 
@@ -138,21 +139,30 @@ func GetProcessesInUse(dir string) map[string]int32 {
 		return inUse
 	}
 
+	var wg sync.WaitGroup
+	var mutex sync.Mutex
 	if runtime.GOOS != "linux" {
 		dir = strings.ToLower(dir) // Windows and macOS filesystems are case-insensitive
 	}
 	for _, p := range procs {
-		exe, err := p.Exe()
-		if err != nil {
-			continue // probably a permission error; ignore
-		}
-		exeToCompare := exe
-		if runtime.GOOS != "linux" {
-			exeToCompare = strings.ToLower(exeToCompare) // Windows and macOS filesystems are case-insensitive
-		}
-		if strings.Contains(exeToCompare, dir) {
-			inUse[exe] = p.Pid
-		}
+		wg.Add(1)
+		go func(p *process.Process) {
+			defer wg.Done()
+			exe, err := p.Exe()
+			if err != nil {
+				return // probably a permission error; ignore
+			}
+			exeToCompare := exe
+			if runtime.GOOS != "linux" {
+				exeToCompare = strings.ToLower(exeToCompare) // Windows and macOS filesystems are case-insensitive
+			}
+			if strings.Contains(exeToCompare, dir) {
+				mutex.Lock()
+				inUse[exe] = p.Pid
+				mutex.Unlock()
+			}
+		}(p)
 	}
+	wg.Wait()
 	return inUse
 }