diff --git a/base/base.pro b/base/base.pro
index 58887276ef..934e3298ac 100644
--- a/base/base.pro
+++ b/base/base.pro
@@ -11,6 +11,7 @@ SOURCES += \
     base.cpp \
     condition.cpp \
     gmtime.cpp \
+    deferred_task.cpp \
     exception.cpp \
     internal/message.cpp \
     logging.cpp \
@@ -42,6 +43,7 @@ HEADERS += \
     collection_cast.hpp \
     condition.hpp \
     const_helper.hpp \
+    deferred_task.hpp \
     exception.hpp \
     gmtime.hpp \
     internal/messagex.hpp \
diff --git a/base/deferred_task.cpp b/base/deferred_task.cpp
new file mode 100644
index 0000000000..c769dab253
--- /dev/null
+++ b/base/deferred_task.cpp
@@ -0,0 +1,44 @@
+#include "deferred_task.hpp"
+
+DeferredTask::DeferredTask(TDuration duration) : m_duration(duration)
+{
+  m_thread = thread([this] {
+    unique_lock<mutex> l(m_mutex);
+    while (!m_terminate)
+    {
+      if (!m_fn)
+      {
+        m_cv.wait(l);
+        continue;
+      }
+
+      if (m_cv.wait_for(l, m_duration) != cv_status::timeout)
+        continue;
+
+      auto local_fn = move(m_fn);
+      m_fn = nullptr;
+      l.unlock();
+      local_fn();
+      l.lock();
+    }
+  });
+}
+
+DeferredTask::~DeferredTask()
+{
+  {
+    unique_lock<mutex> l(m_mutex);
+    m_terminate = true;
+  }
+  m_cv.notify_one();
+  m_thread.join();
+}
+
+void DeferredTask::Drop()
+{
+  {
+    unique_lock<mutex> l(m_mutex);
+    m_fn = nullptr;
+  }
+  m_cv.notify_one();
+}
diff --git a/base/deferred_task.hpp b/base/deferred_task.hpp
new file mode 100644
index 0000000000..517953150d
--- /dev/null
+++ b/base/deferred_task.hpp
@@ -0,0 +1,35 @@
+#pragma once
+
+#include "std/thread.hpp"
+#include "std/chrono.hpp"
+#include "std/mutex.hpp"
+#include "std/condition_variable.hpp"
+#include "std/function.hpp"
+
+
+class DeferredTask
+{
+  using TDuration = duration<double>;
+  thread m_thread;
+  mutex m_mutex;
+  condition_variable m_cv;
+  function<void()> m_fn;
+  TDuration m_duration;
+  bool m_terminate = false;
+
+public:
+  DeferredTask(TDuration duration);
+  ~DeferredTask();
+
+  void Drop();
+
+  template<typename TFn>
+  void RestartWith(TFn const && fn)
+  {
+    {
+      unique_lock<mutex> l(m_mutex);
+      m_fn = fn;
+    }
+    m_cv.notify_one();
+  }
+};
diff --git a/std/condition_variable.hpp b/std/condition_variable.hpp
index 74131620de..4d137e729b 100644
--- a/std/condition_variable.hpp
+++ b/std/condition_variable.hpp
@@ -7,6 +7,7 @@
 #include <condition_variable>
 
 using std::condition_variable;
+using std::cv_status;
 
 #ifdef DEBUG_NEW
 #define new DEBUG_NEW
diff --git a/xcode/base/base.xcodeproj/project.pbxproj b/xcode/base/base.xcodeproj/project.pbxproj
index eb1f717b72..16026a5834 100644
--- a/xcode/base/base.xcodeproj/project.pbxproj
+++ b/xcode/base/base.xcodeproj/project.pbxproj
@@ -69,6 +69,8 @@
 		6753420F1A3F57E400A0A8C3 /* timer.hpp in Headers */ = {isa = PBXBuildFile; fileRef = 675341CA1A3F57E400A0A8C3 /* timer.hpp */; };
 		6753453D1A3F6F6A00A0A8C3 /* message.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 6753453A1A3F6F6A00A0A8C3 /* message.cpp */; };
 		6753453E1A3F6F6A00A0A8C3 /* message.hpp in Headers */ = {isa = PBXBuildFile; fileRef = 6753453B1A3F6F6A00A0A8C3 /* message.hpp */; };
+		67A609AE1C88642E001E641A /* deferred_task.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 67A609AC1C88642E001E641A /* deferred_task.cpp */; };
+		67A609AF1C88642E001E641A /* deferred_task.hpp in Headers */ = {isa = PBXBuildFile; fileRef = 67A609AD1C88642E001E641A /* deferred_task.hpp */; };
 		67B52B601AD3C84E00664C17 /* thread_checker.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 67B52B5E1AD3C84E00664C17 /* thread_checker.cpp */; };
 		67B52B611AD3C84E00664C17 /* thread_checker.hpp in Headers */ = {isa = PBXBuildFile; fileRef = 67B52B5F1AD3C84E00664C17 /* thread_checker.hpp */; };
 /* End PBXBuildFile section */
@@ -140,6 +142,8 @@
 		675341CA1A3F57E400A0A8C3 /* timer.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = timer.hpp; sourceTree = "<group>"; };
 		6753453A1A3F6F6A00A0A8C3 /* message.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = message.cpp; sourceTree = "<group>"; };
 		6753453B1A3F6F6A00A0A8C3 /* message.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = message.hpp; sourceTree = "<group>"; };
+		67A609AC1C88642E001E641A /* deferred_task.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = deferred_task.cpp; sourceTree = "<group>"; };
+		67A609AD1C88642E001E641A /* deferred_task.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = deferred_task.hpp; sourceTree = "<group>"; };
 		67B52B5E1AD3C84E00664C17 /* thread_checker.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = thread_checker.cpp; sourceTree = "<group>"; };
 		67B52B5F1AD3C84E00664C17 /* thread_checker.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = thread_checker.hpp; sourceTree = "<group>"; };
 /* End PBXFileReference section */
@@ -240,6 +244,8 @@
 				675341CA1A3F57E400A0A8C3 /* timer.hpp */,
 				34CB447C1C0C34C50061F6A0 /* timegm.cpp */,
 				34CB447D1C0C34C50061F6A0 /* timegm.hpp */,
+				67A609AC1C88642E001E641A /* deferred_task.cpp */,
+				67A609AD1C88642E001E641A /* deferred_task.hpp */,
 			);
 			name = base;
 			path = ../../base;
@@ -269,6 +275,7 @@
 				6753420D1A3F57E400A0A8C3 /* threaded_priority_queue.hpp in Headers */,
 				675341EF1A3F57E400A0A8C3 /* rolling_hash.hpp in Headers */,
 				671182F11C807C0A00CB8177 /* gmtime.hpp in Headers */,
+				67A609AF1C88642E001E641A /* deferred_task.hpp in Headers */,
 				675342021A3F57E400A0A8C3 /* string_utils.hpp in Headers */,
 				675341E41A3F57E400A0A8C3 /* matrix.hpp in Headers */,
 				675341D81A3F57E400A0A8C3 /* condition.hpp in Headers */,
@@ -378,6 +385,7 @@
 				674A7E2E1C0DB03D003D48E1 /* timegm.cpp in Sources */,
 				6753420A1A3F57E400A0A8C3 /* threaded_container.cpp in Sources */,
 				675341FF1A3F57E400A0A8C3 /* string_format.cpp in Sources */,
+				67A609AE1C88642E001E641A /* deferred_task.cpp in Sources */,
 				675341DF1A3F57E400A0A8C3 /* logging.cpp in Sources */,
 				671182F01C807C0A00CB8177 /* gmtime.cpp in Sources */,
 				675341D71A3F57E400A0A8C3 /* condition.cpp in Sources */,