make allocation engine thread safe

diff --git a/src/lib/dhcpsrv/alloc_engine.cc b/src/lib/dhcpsrv/alloc_engine.cc
index 7317389adab675ccc1027497336cc599fe9d1411..010d1187f922c902885dc227daf008319f59fd3e 100644 (file)
--- a/src/lib/dhcpsrv/alloc_engine.cc
+++ b/src/lib/dhcpsrv/alloc_engine.cc
@@ -25,6 +25,7 @@
 #include <dhcpsrv/callout_handle_store.h>
 #include <stats/stats_mgr.h>
 #include <util/stopwatch.h>
+#include <util/threads/lock_guard.h>
 #include <hooks/server_hooks.h>
 #include <hooks/hooks_manager.h>
 

diff --git a/src/lib/dhcpsrv/alloc_engine.h b/src/lib/dhcpsrv/alloc_engine.h
index 1edc9b1e4d5903a87316fd8e08657203d07f4285..03314b3285655b4817bf70d8a6b90cebb8fa45ad 100644 (file)
--- a/src/lib/dhcpsrv/alloc_engine.h
+++ b/src/lib/dhcpsrv/alloc_engine.h
@@ -181,6 +181,9 @@ protected:
         static isc::asiolink::IOAddress
         increaseAddress(const isc::asiolink::IOAddress& address,
                         bool prefix, const uint8_t prefix_len);
+
+    private:
+        std::mutex mutex_;
     };
 
     /// @brief Address/prefix allocator that gets an address based on a hash