cppring: Add Ring::empty function (and header for ssize_t)

shramov · Dec 19, 2024 · efc4acb · efc4acb
1 parent 8adec19
commit efc4acb
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/tll/cppring.h b/src/tll/cppring.h
@@ -4,6 +4,8 @@
 #ifndef _TLL_CPPRING_H
 #define _TLL_CPPRING_H
 
+#include <sys/types.h>
+
 #include <atomic>
 #include <cerrno>
 #include <cstddef>
@@ -156,6 +158,11 @@ struct RingT
 		return 0;
 	}
 
+	bool empty() const
+	{
+		return head.load(std::memory_order_relaxed) == tail.load(std::memory_order_relaxed);
+	}
+
 	int read(const void **data, size_t *size) const
 	{
 	    return _read_at(head.load(std::memory_order_relaxed), data, size);