added custom release callback

Author: sy-c

src/MemoryBank.cxx

@@ -11,7 +11,15 @@ MemoryBank::MemoryBank(std::string v_description){
   description=v_description;
 }
 
+MemoryBank::MemoryBank(void* v_baseAddress, std::size_t v_size, ReleaseCallback v_callback, std::string v_description)
+:baseAddress(v_baseAddress), size(v_size), description(v_description), releaseCallback(v_callback)
+{
+}
+
 MemoryBank::~MemoryBank(){
+  if (releaseCallback!=nullptr) {
+    releaseCallback();
+  }
 }
 
 void *MemoryBank::getBaseAddress() {

src/MemoryBank.h

@@ -4,7 +4,7 @@
 #include <string>
 #include <cstddef>
 #include <memory>
-
+#include <functional>
 
 // a class to handle a big block of contiguous memory.
 // constructor/destructor to be overloaded for different types of support.
@@ -13,6 +13,10 @@
 class MemoryBank {
   public:
     MemoryBank(std::string description=""); // constructor
+    
+    using ReleaseCallback = std::function<void(void)>;
+    MemoryBank(void* baseAddress, std::size_t size, ReleaseCallback callback, std::string description); // constructor, given a memory chunk and mean to release it
+    
     virtual ~MemoryBank(); // destructor 
 
     void *getBaseAddress(); // get the (virtual) base address of this memory bank
@@ -25,6 +29,7 @@ class MemoryBank {
     void* baseAddress; // base address (virtual) of buffer
     std::size_t size; // size of buffer, in bytes
     std::string description; // description of the memory bank (type/sypport, etc)
+    ReleaseCallback releaseCallback; // an optional user-callback to be called in destructor, when overloaded constructor has been used
 };