1 files changed, 59 insertions, 0 deletions
diff --git a/Cython/Includes/libcpp/atomic.pxd b/Cython/Includes/libcpp/atomic.pxd
new file mode 100644
index 000000000..89a8e6ffc
--- /dev/null
+++ b/Cython/Includes/libcpp/atomic.pxd
@@ -0,0 +1,59 @@
+
+cdef extern from "<atomic>" namespace "std" nogil:
+
+    cdef enum memory_order:
+        memory_order_relaxed
+        memory_order_consume
+        memory_order_acquire
+        memory_order_release
+        memory_order_acq_rel
+        memory_order_seq_cst
+
+    cdef cppclass atomic[T]:
+        atomic()
+        atomic(T)
+
+        bint is_lock_free()
+        void store(T)
+        void store(T, memory_order)
+        T load()
+        T load(memory_order)
+        T exchange(T)
+        T exchange(T, memory_order)
+
+        bint compare_exchange_weak(T&, T, memory_order, memory_order)
+        bint compare_exchange_weak(T&, T, memory_order)
+        bint compare_exchange_weak(T&, T)
+        bint compare_exchange_strong(T&, T, memory_order, memory_order)
+        bint compare_exchange_strong(T&, T, memory_order)
+        bint compare_exchange_strong(T&, T)
+
+        T fetch_add(T, memory_order)
+        T fetch_add(T)
+        T fetch_sub(T, memory_order)
+        T fetch_sub(T)
+        T fetch_and(T, memory_order)
+        T fetch_and(T)
+        T fetch_or(T, memory_order)
+        T fetch_or(T)
+        T fetch_xor(T, memory_order)
+        T fetch_xor(T)
+
+        T operator++()
+        T operator++(int)
+        T operator--()
+        T operator--(int)
+
+        # modify-in-place operators not yet supported by Cython:
+        # T operator+=(T)
+        # T operator-=(T)
+        # T operator&=(T)
+        # T operator|=(T)
+        # T operator^=(T)
+
+        bint operator==(atomic[T]&, atomic[T]&)
+        bint operator==(atomic[T]&, T&)
+        bint operator==(T&, atomic[T]&)
+        bint operator!=(atomic[T]&, atomic[T]&)
+        bint operator!=(atomic[T]&, T&)
+        bint operator!=(T&, atomic[T]&)