1 files changed, 23 insertions, 0 deletions
diff --git a/src/common/ThrottleInterface.h b/src/common/ThrottleInterface.h
new file mode 100644
index 000000000..49182a117
--- /dev/null
+++ b/src/common/ThrottleInterface.h
@@ -0,0 +1,23 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#pragma once
+
+#include <cstdint>
+
+class ThrottleInterface {
+public:
+  virtual ~ThrottleInterface() {}
+  /**
+   * take the specified number of slots from the stock regardless the throttling
+   * @param c number of slots to take
+   * @returns the total number of taken slots
+   */
+  virtual int64_t take(int64_t c = 1) = 0;
+  /**
+   * put slots back to the stock
+   * @param c number of slots to return
+   * @returns number of requests being hold after this
+   */
+  virtual int64_t put(int64_t c = 1) = 0;
+};