Exposed size_approx via CAPI

Author: cboulay

c_api/concurrentqueue.cpp

@@ -31,4 +31,9 @@ int moodycamel_cq_try_dequeue(MoodycamelCQHandle handle, MoodycamelValue* value)
 	return reinterpret_cast<MoodycamelCQPtr>(handle)->try_dequeue(*value) ? 1 : 0;
 }
 
+unsigned int moodycamel_cq_size_approx(MoodycamelCQHandle handle)
+{
+    return (unsigned int)reinterpret_cast<MoodycamelCQPtr>(handle)->size_approx();
+}
+
 }

c_api/concurrentqueue.h

@@ -26,6 +26,7 @@ MOODYCAMEL_EXPORT int moodycamel_cq_create(MoodycamelCQHandle* handle);
 MOODYCAMEL_EXPORT int moodycamel_cq_destroy(MoodycamelCQHandle handle);
 MOODYCAMEL_EXPORT int moodycamel_cq_enqueue(MoodycamelCQHandle handle, MoodycamelValue value);
 MOODYCAMEL_EXPORT int moodycamel_cq_try_dequeue(MoodycamelCQHandle handle, MoodycamelValue* value);
+MOODYCAMEL_EXPORT unsigned int moodycamel_cq_size_approx(MoodycamelCQHandle handle);
 
 MOODYCAMEL_EXPORT int moodycamel_bcq_create(MoodycamelBCQHandle* handle);
 MOODYCAMEL_EXPORT int moodycamel_bcq_destroy(MoodycamelBCQHandle handle);