dolphin/Source
Filoppi 1badceb455 ControllerInterface: fix UpdateReferences() deadlock
Removed useless locks to DeviceContainer::m_devices_mutex, as they were all already protected by m_devices_population_mutex.
We have no interest in blocking other threads that were potentially reading devices at the same time so this seems fine.
This simplifies the code, and I've adjusted a few comments which mentioned possible deadlock that should now be totally gone.

The deadlock could have happen if a thread directly called EmulatedController::UpdateReferences(), while another another thread also reached EmulatedController::UpdateReferences() within a call to ControllerInterface::UpdateDevices(), as the mentioned function locked both the DeviceContainer::m_devices_mutex and s_get_state_mutex at the same time.

The deadlock was frequent on game emulation startup on Android, due to the UpdateReferences() call in InputConfig::LoadConfig() and the UI thread triggering calls to ControllerInterface::UpdateDevices().
It could also have happened on Desktop if a user pressed "Refresh Devices" manually in the UI while the input config was loading.

Also brought some UpdateReferences() comments and thread safety fixes from https://github.com/dolphin-emu/dolphin/pull/9489
2021-11-20 16:54:36 +02:00
..
Android Android: Bump NDK and CMake versions 2021-11-13 20:41:11 +01:00
Core ControllerInterface: fix UpdateReferences() deadlock 2021-11-20 16:54:36 +02:00
DSPSpy DSPSpy: Replace less_test with cond_test 2021-08-22 17:07:41 -07:00
DSPTool Core: Add GBA host interface 2021-07-13 16:42:49 +02:00
PCH msvc: update to vs2022 and windows sdk 10.0.22000 2021-11-11 08:01:26 -08:00
UnitTests Fix all uninitialized variable warnings (C26495) 2021-10-13 12:32:16 -07:00
VSProps msbuild: remove workaround for older winsdk 2021-11-15 16:23:33 -08:00
.clang-format
CMakeLists.txt Android: Don't hold gameFileCache lock during updateAdditionalMetadata 2021-08-24 15:35:39 +02:00
dolphin-emu.sln msvc: update to vs2022 and windows sdk 10.0.22000 2021-11-11 08:01:26 -08:00