0xC0000054 / sc4-cpu-priority

A DLL Plugin for SimCity 4 that extends the CPUPriority command line argument.

sc4-cpu-priority

A DLL Plugin for SimCity 4 that extends the -CPUPriority command line argument.

SimCity 4 only supports -CPUPriority:Low, and ignores any other value.
This plugin adds support for the following additional CPUPriority values:

Value	Notes
High
AboveNormal
Normal	The default value for a process, unless the parent process has a different value.
BelowNormal
Idle	Identical to the game's -CPUPriority:Low option.

The plugin can be downloaded from the Releases tab: https://github.com/0xC0000054/sc4-cpu-priority/releases

System Requirements

• Windows 10 or later

The plugin may work on Windows 7 or later with the Microsoft Visual C++ 2022 x86 Redistribute installed, but I do not have the ability to test that.

Installation

1. Close SimCity 4.
2. Copy SC4CPUPriority.dll into the Plugins folder in the SimCity 4 installation directory.
3. Start SimCity 4.

Troubleshooting

The plugin should write a SC4CPUPriority.log file in the same folder as the plugin.
The log contains status information for the most recent run of the plugin.

License

This project is licensed under the terms of the MIT License.
See LICENSE.txt for more information.

3rd party code

gzcom-dll Located in the vendor folder, MIT License.
Windows Implementation Library MIT License

Source Code

Prerequisites

• Visual Studio 2022

Building the plugin

• Open the solution in the src folder
• Update the post build events to copy the build output to you SimCity 4 application plugins folder.
• Build the solution

Debugging the plugin

Visual Studio can be configured to launch SimCity 4 on the Debugging page of the project properties. I configured the debugger to launch the game in a window with the following command line:
-intro:off -CPUCount:1 -CPUPriority:high -w -CustomResolution:enabled -r1920x1080x32

You may need to adjust the resolution for your screen.