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Bug fixes in lock free MPMC queue

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Fix bug slots used before initialization,compare and swap is protecting
updating committed, but it is not protecting the memory initialization.
Adding atomic_flag commit_lock to protect against that

Fix bug multiple threads committing at the same time, fixed by using
atomic_flag commit_lock and re-checking committed after acquiring the
lock

Reorder helper functions
This commit is contained in:
amir
2026-03-07 11:36:11 +01:00
parent 4967591ff8
commit 417dbad374
4 changed files with 82 additions and 55 deletions
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6
binaries/changlog.txt
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@@ -8,8 +8,12 @@ v2.1: Uses AVX2 instead of SSE2
v3.0: Simple mutex/critical section based MPMC queue
reusable hashing buffer
v3.1: Lock free MPMC queue
v3.1: Lock free MPMC queue Vyukov-style
v3.2: Making the lock free MPMC queue growable
Add padding to avoir false sharing
Add sleep() and SwitchToThread() to limit spinning
v3.3: Fix bug slots used before initialization,compare and swap is protecting updating committed, but it is not protecting the memory initialization. Adding atomic_flag commit_lock to protect against that
Fix bug multiple threads committing at the same time, fixed by using atomic_flag commit_lock and re-checking committed after acquiring the lock
Reorder helper functions