From 7970b594d57c12829d9c22f396100395755b8a1d Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Mon, 2 Dec 2019 17:36:10 +0100
Subject: [PATCH] SystemMonitor: Update the process memory map once every
 second

---
 Applications/SystemMonitor/ProcessMemoryMapWidget.cpp | 8 ++++++++
 Applications/SystemMonitor/ProcessMemoryMapWidget.h   | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/Applications/SystemMonitor/ProcessMemoryMapWidget.cpp b/Applications/SystemMonitor/ProcessMemoryMapWidget.cpp
index a30f7f9d98..8b592a5999 100644
--- a/Applications/SystemMonitor/ProcessMemoryMapWidget.cpp
+++ b/Applications/SystemMonitor/ProcessMemoryMapWidget.cpp
@@ -1,4 +1,5 @@
 #include "ProcessMemoryMapWidget.h"
+#include <LibCore/CTimer.h>
 #include <LibGUI/GBoxLayout.h>
 #include <LibGUI/GJsonArrayModel.h>
 #include <LibGUI/GTableView.h>
@@ -30,6 +31,7 @@ ProcessMemoryMapWidget::ProcessMemoryMapWidget(GWidget* parent)
     });
     pid_vm_fields.empend("name", "Name", TextAlignment::CenterLeft);
     m_table_view->set_model(GJsonArrayModel::create({}, move(pid_vm_fields)));
+    m_timer = CTimer::construct(1000, [this] { refresh(); }, this);
 }
 
 ProcessMemoryMapWidget::~ProcessMemoryMapWidget()
@@ -43,3 +45,9 @@ void ProcessMemoryMapWidget::set_pid(pid_t pid)
     m_pid = pid;
     static_cast<GJsonArrayModel*>(m_table_view->model())->set_json_path(String::format("/proc/%d/vm", pid));
 }
+
+void ProcessMemoryMapWidget::refresh()
+{
+    if (m_pid != -1)
+        m_table_view->model()->update();
+}
diff --git a/Applications/SystemMonitor/ProcessMemoryMapWidget.h b/Applications/SystemMonitor/ProcessMemoryMapWidget.h
index db09ddc454..8d4081635b 100644
--- a/Applications/SystemMonitor/ProcessMemoryMapWidget.h
+++ b/Applications/SystemMonitor/ProcessMemoryMapWidget.h
@@ -2,6 +2,7 @@
 
 #include <LibGUI/GWidget.h>
 
+class CTimer;
 class GTableView;
 
 class ProcessMemoryMapWidget final : public GWidget {
@@ -10,9 +11,11 @@ public:
     virtual ~ProcessMemoryMapWidget() override;
 
     void set_pid(pid_t);
+    void refresh();
 
 private:
     explicit ProcessMemoryMapWidget(GWidget* parent);
     RefPtr<GTableView> m_table_view;
     pid_t m_pid { -1 };
+    RefPtr<CTimer> m_timer;
 };