Optimise write lock release

1b4106fa · Xavier Thompson · 63dce352 · 1b4106fa
Commit 1b4106fa authored Nov 09, 2020 by Xavier Thompson
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Showing with 2 additions and 5 deletions

Cython/Utility/CyObjects.cpp Cython/Utility/CyObjects.cpp +2 -5

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--- a/Cython/Utility/CyObjects.cpp
+++ b/Cython/Utility/CyObjects.cpp
@@ -122,11 +122,8 @@
                }
                void unwlock() {
-                    uint32_t prev_readers = _readers;
+                    uint32_t prev_readers = HAS_WRITER;
-                    if (prev_readers == HAS_WRITER) {
+                    _readers.compare_exchange_weak(prev_readers, 0);
-                        _readers.compare_exchange_weak(prev_readers, 0);
-                    }
-                    return;
                }
        };