godotengine/godot
1
0
Fork 0
mirror of https://github.com/godotengine/godot.git synced 2025-11-12 13:20:55 +00:00
Code Releases Wiki Activity

core/command_queue_mt: Fix crash/hang when buffer fills up

Browse Source 
This patch fixes two related issues. One is the race condition in issue #42107..
The other is a crash which happens when the reader is lapped near the end of the buffer.
This commit is contained in:
Lyuma
2020-09-24 09:55:38 -07:00
parent 48e8da4aac
commit 9f654b441f
2 changed files with 21 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
core/command_queue_mt.cpp
View File

@@ -72,7 +72,7 @@ CommandQueueMT::SyncSemaphore *CommandQueueMT::_alloc_sync_sem() {
bool CommandQueueMT::dealloc_one() {
tryagain:
if (dealloc_ptr == write_ptr) {
if (dealloc_ptr == (write_ptr_and_epoch >> 1)) {
// The queue is empty
return false;
}