return_temporary_buffer


Category: allocators	Component type: function

Prototype

template <class T> void return_temporary_buffer(T* p);

Description

Return_temporary_buffer is used to deallocate memory that was allocated using get_temporary_buffer. [1]

Note: get_temporary_buffer and return_temporary_buffer are only provided for backward compatibility. If you are writing new code, you should instead use the temporary_buffer class.

Definition

Defined in the standard header memory, and in the nonstandard backward-compatibility header algo.h.

Requirements on types

Preconditions

The argument p is a pointer to a block of memory that was allocated using get_temporary_buffer(ptrdiff_t, T*).

Complexity

Example

int main()
{
  pair<int*, ptrdiff_t> P = get_temporary_buffer(10000, (int*) 0);
  int* buf = P.first;
  ptrdiff_t N = P.second;
  uninitialized_fill_n(buf, N, 42);
  int* result = find_if(buf, buf + N, bind2nd(not_equal_to<int>(), 42));
  assert(result == buf + N);
  return_temporary_buffer(buf);
}

Notes

[1] As is always true, memory that was allocated using a particular allocation function must be deallocated using the corresponding deallocation function. Memory obtained using get_temporary_buffer must be deallocated using return_temporary_buffer, rather than using free or ::operator delete.

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