From 97cd949dc58a11db3d8f9c9e2d161caf116d1d6e Mon Sep 17 00:00:00 2001
From: LMZ <opensource@users.noreply.github.com>
Date: Mon, 20 Apr 2026 17:32:17 +0800
Subject: [PATCH] feat: make ProcessSnapshotProvider a singleton actor to
 persist metadataCache across view model resets

---
 Sources/ProcessBarMonitor/MonitorViewModel.swift        | 2 +-
 Sources/ProcessBarMonitor/ProcessSnapshotProvider.swift | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/Sources/ProcessBarMonitor/MonitorViewModel.swift b/Sources/ProcessBarMonitor/MonitorViewModel.swift
index c23c47f..43d5b11 100644
--- a/Sources/ProcessBarMonitor/MonitorViewModel.swift
+++ b/Sources/ProcessBarMonitor/MonitorViewModel.swift
@@ -49,7 +49,7 @@ final class MonitorViewModel: ObservableObject {
     }
 
     private let metricsProvider = SystemMetricsProvider()
-    private let processProvider = ProcessSnapshotProvider()
+    private let processProvider = ProcessSnapshotProvider.shared
     private let settings: SettingsStore
     private let logger = Logger(subsystem: Bundle.main.bundleIdentifier ?? "ai.openclaw.ProcessBarMonitor", category: "process-snapshot")
     private var refreshTask: Task<Void, Never>?
diff --git a/Sources/ProcessBarMonitor/ProcessSnapshotProvider.swift b/Sources/ProcessBarMonitor/ProcessSnapshotProvider.swift
index 1e0ea3f..3071a90 100644
--- a/Sources/ProcessBarMonitor/ProcessSnapshotProvider.swift
+++ b/Sources/ProcessBarMonitor/ProcessSnapshotProvider.swift
@@ -2,6 +2,8 @@ import Foundation
 import AppKit
 
 actor ProcessSnapshotProvider {
+    static let shared = ProcessSnapshotProvider()
+
     enum SnapshotError: LocalizedError {
         case launchFailed(Error)
         case commandFailed(status: Int32, stderr: String)