820696c114
Project Sylpheed freezes mid-mission about half the time. Under gdb every one of the emulator's 79 threads is in a WAIT, yet the process still burns 1253 ticks per 10 s - 280 of them in guest threads the backtrace shows blocked inside KeWaitForSingleObject. So they are cycling: a timed wait that expires and is re-entered on an object nobody signals. Naming that object is the next step. Logging it the ordinary way is not possible. KeWaitForSingleObject is kHighFrequency, so it is silent unless --log_high_frequency_kernel_calls=true, and measured: that flag writes 175 MB and leaves the emulator seventeen minutes into a boot with the screen still black. So count CONSECUTIVE timeouts on the SAME object, per thread, in xeKeWaitForSingleObject, and log at 100 and then every 500. It is self-selecting: a wait that is being satisfied never builds a streak. Measured on a healthy 25-minute Stage 02 run: 27 lines, all one thread (F800004C) polling one Event (guest VA BE56BB5C) with a ~30 ms timeout - a legitimate poller, and the baseline a frozen run has to be compared against. Not "silent", as first drafted, but quiet enough to leave on. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01PMRJjbxLqZtsb5Vb7KunPE
Xenia Canary - Xbox 360 Emulator
Xenia Canary is an experimental fork of the Xenia emulator. For more information, see the Xenia Canary wiki.
Come chat with us about emulator-related topics on Discord.
For developer chat join #dev but stay on topic. Lurking is not only fine, but encouraged!
Please check the FAQ page before asking questions.
We've got jobs/lives/etc, so don't expect instant answers.
Discussing illegal activities will get you banned.
Status
| Buildbot | Status | Releases |
|---|---|---|
| Canary (🪟, 🐧) |  |
Latest ◦ All ◦ Old |
Experimental Netplay
| Buildbot | Status | Releases |
|---|---|---|
| Windows | Latest |
Quickstart
See the Quickstart page.
FAQ
See the frequently asked questions page.
Game Compatibility
See the Game compatibility list for currently tracked games, and feel free to contribute your own updates, screenshots, and information there following the existing conventions.
Building
See building.md for setup and information about the
xb script. When writing code, check the style guide
and be sure to run clang-format!
Contributors Wanted!
Have some spare time, know advanced C++, and want to write an emulator? Contribute! There's a ton of work that needs to be done, a lot of which is wide open greenfield fun.
For general rules and guidelines please see CONTRIBUTING.md.
Fixes and optimizations are always welcome (please!), but in addition to that there are some major work areas still untouched:
- Help work through missing functionality/bugs in games
- Reduce the size of Xenia's huge log files
- Skilled with Linux? A strong contributor is needed to help with porting
See more projects good for contributors. It's a good idea to ask on Discord and check the issues page before beginning work on something.
Disclaimer
The goal of this project is to experiment, research, and educate on the topic of emulation of modern devices and operating systems. It is not for enabling illegal activity. All information is obtained via reverse engineering of legally purchased devices and games and information made public on the internet (you'd be surprised what's indexed on Google...).