From 2481bddf58c0093edf3c978555c8c1f232b10db4 Mon Sep 17 00:00:00 2001
From: RoosterDragon <RoosterDragon@outlook.com>
Date: Mon, 1 Apr 2024 14:38:41 +0100
Subject: [PATCH] Trim memory usage of FileSystem.

When LoadFromManifest is called, trim the various backing collections. These backing collections tend to live a long time without further modifications.
---
 OpenRA.Game/FileSystem/FileSystem.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/OpenRA.Game/FileSystem/FileSystem.cs b/OpenRA.Game/FileSystem/FileSystem.cs
index f6518ee173..f1e8a7a6f0 100644
--- a/OpenRA.Game/FileSystem/FileSystem.cs
+++ b/OpenRA.Game/FileSystem/FileSystem.cs
@@ -186,6 +186,12 @@ namespace OpenRA.FileSystem
 			UnmountAll();
 			foreach (var kv in manifest.Packages)
 				Mount(kv.Key, kv.Value);
+
+			mountedPackages.TrimExcess();
+			explicitMounts.TrimExcess();
+			modPackages.TrimExcess();
+			foreach (var packages in fileIndex.Values)
+				packages.TrimExcess();
 		}
 
 		Stream GetFromCache(string filename)