MemAllocGuard

Files CCore/inc/MemAllocGuard.h CCore/src/MemAllocGuard.cpp

MemAllocGuard is a Scope Lock Type for the memory allocation.

class MemAllocGuard : NoCopy
 {
   void *mem;
 
  public:
  
   explicit MemAllocGuard(ulen len); // allocate len bytes
   
   MemAllocGuard(ulen count,ulen size_of,ulen extra=0); // allocate count*size_of+extra bytes, 
                                                        // overflow check is performed
   
   ~MemAllocGuard();
   
   operator void * () const { return mem; }      // memory block
   
   void * disarm() { return Replace_null(mem); } // take the ownership on the block
 };

You can use this class to allocate and keep alive a memory block for the duration of a scope. MemAllocGuard destructor releases the block, unless the method disarm() is called.

MemAllocGuardOf is a template variant. You can customize the methods of allocating/deallocating the memory.

template <class Algo>
class MemAllocGuardOf : NoCopy
 {
   void *mem;

  public:

   explicit MemAllocGuardOf(ulen len);

   MemAllocGuardOf(ulen count,ulen size_of,ulen extra=0);

   ~MemAllocGuardOf();

   operator void * () const { return mem; }

   void * disarm() { return Replace_null(mem); }
 };

The Algorithm Package Algo must provide two functions:

struct Algo
 {
  static void * MemAlloc(ulen len);

  static void MemFree(void *mem);
 };