diff --git a/README.md b/README.md
index c844919..315dd54 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,5 @@
-# embedded-test
\ No newline at end of file
+# embedded-test
+
+* lib - библиотека с простым аллокатором статической памяти.
+* tests - тесты аллокатора. Тесты реализованы с помощью библиотеки [Catch2](https://github.com/catchorg/Catch2)
+* app - пример обертки над аллокатором для использования в приложении с операционной системой
\ No newline at end of file
diff --git a/lib/include/SimpleStaticAllocator.h b/lib/include/SimpleStaticAllocator.h
index c0e9557..108d506 100644
--- a/lib/include/SimpleStaticAllocator.h
+++ b/lib/include/SimpleStaticAllocator.h
@@ -21,8 +21,15 @@ namespace AllocatorLib {
         ElementType pool[POOL_ELEMENTS_COUNT];
         SimpleStack<ElementTypePointer, POOL_ELEMENTS_COUNT> freeStack;
 
+        MutexLockFuntionType lock = nullptr;
+        MutexReleaseFuntionType release = nullptr;
+
     public:
         SimpleStaticAllocator(MutexLockFuntionType lockFunction, MutexReleaseFuntionType releaseFunction) {
+
+            lock = lockFunction;
+            release = releaseFunction;
+
             freeStack.init();
 
             for (uint32_t i = 0; i < POOL_ELEMENTS_COUNT; i++) {
@@ -35,23 +42,51 @@ namespace AllocatorLib {
         }
 
         size_t count() const noexcept {
-            return POOL_ELEMENTS_COUNT - freeStack.count();
+            if (lock != nullptr) {
+                lock();
+            }
+
+            size_t res = POOL_ELEMENTS_COUNT - freeStack.count();
+
+            if (release != nullptr) {
+                release();
+            }
+
+            return res;
         }
 
 
         ElementTypePointer allocate() {
+            if (lock != nullptr) {
+                lock();
+            }
+
+            ElementTypePointer res = nullptr;
+
             if (!freeStack.isEmpty()) {
-                return freeStack.pop();
+                res = freeStack.pop();
+            }
+
+            if (release != nullptr) {
+                release();
             }
 
-            return nullptr;
+            return res;
         }
 
         void free(ElementTypePointer &element) {
+            if (lock != nullptr) {
+                lock();
+            }
+
             if (!freeStack.isFull() && element != nullptr) {
                 freeStack.push(element);
                 element = nullptr;
             }
+
+            if (release != nullptr) {
+                release();
+            }
         }
     };
 }