From b5437216e23c144bc1d650cbd19ff15391497d01 Mon Sep 17 00:00:00 2001
From: Tom <tomut@yahoo.com>
Date: Sun, 3 Jan 2021 10:13:33 -0700
Subject: [PATCH] SystemMonitor: Re-use the /proc/all file descriptor when
 updating

This makes it more likely to be able to get statistics when resources
are scarce.
---
 Applications/SystemMonitor/ProcessModel.cpp | 2 +-
 Applications/SystemMonitor/ProcessModel.h   | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Applications/SystemMonitor/ProcessModel.cpp b/Applications/SystemMonitor/ProcessModel.cpp
index 76562481a1e178..1c9f30a0ef6e50 100644
--- a/Applications/SystemMonitor/ProcessModel.cpp
+++ b/Applications/SystemMonitor/ProcessModel.cpp
@@ -350,7 +350,7 @@ GUI::Variant ProcessModel::data(const GUI::ModelIndex& index, GUI::ModelRole rol
 void ProcessModel::update()
 {
     auto previous_pid_count = m_pids.size();
-    auto all_processes = Core::ProcessStatisticsReader::get_all();
+    auto all_processes = Core::ProcessStatisticsReader::get_all(m_proc_all);
 
     u64 last_sum_ticks_scheduled = 0;
     for (auto& it : m_threads)
diff --git a/Applications/SystemMonitor/ProcessModel.h b/Applications/SystemMonitor/ProcessModel.h
index 9c79d0fcc5123a..d54fecdb4b036f 100644
--- a/Applications/SystemMonitor/ProcessModel.h
+++ b/Applications/SystemMonitor/ProcessModel.h
@@ -159,6 +159,7 @@ class ProcessModel final : public GUI::Model {
     RefPtr<Gfx::Bitmap> m_high_priority_icon;
     RefPtr<Gfx::Bitmap> m_low_priority_icon;
     RefPtr<Gfx::Bitmap> m_normal_priority_icon;
+    RefPtr<Core::File> m_proc_all;
 };
 
 namespace AK {