Improve and fix mistake in cypclass trywlock implementation

27953f00 · Xavier Thompson · 05c09d62 · 27953f00
Commit 27953f00 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
@@ -119,11 +119,8 @@
                }
                int CyObject_TRYWLOCK() const {
-                    uint32_t prev_readers = _readers;
+                    uint32_t prev_readers = 0;
-                    if (prev_readers == 0) {
+                    return _readers.compare_exchange_strong(prev_readers, HAS_WRITER) - 1;
-                        return _readers.compare_exchange_weak(prev_readers, HAS_WRITER) - 1;
-                    }
-                    return -1;
                }
                void CyObject_UNWLOCK() const {