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Memory Allocation

Use these routines to allocate, free, and reallocate memory.

Memory-Allocation Routines

Routine

Use

.NET Framework equivalent

_alloca , _malloca

Allocate memory from stack

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

calloc

Allocate storage for array, initializing every byte in allocated block to 0

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_calloc_dbg

Debug version of calloc; only available in the debug versions of the run-time libraries

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

operator delete

Free allocated block

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

operator delete[]

Free allocated block

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_expand

Expand or shrink block of memory without moving it

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_expand_dbg

Debug version of _expand; only available in the debug versions of the run-time libraries

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

free

Free allocated block

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_free_dbg

Debug version of free; only available in the debug versions of the run-time libraries

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_freea

Free allocated block from stack

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_get_heap_handle

Get Win32 HANDLE of the CRT heap.

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_heapadd

Add memory to heap

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_heapchk

Check heap for consistency

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_heapmin

Release unused memory in heap

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_heapset

Fill free heap entries with specified value

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_heapwalk

Return information about each entry in heap

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

malloc

Allocate block of memory from heap

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_malloc_dbg

Debug version of malloc; only available in the debug versions of the run-time libraries

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_msize

Return size of allocated block

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_msize_dbg

Debug version of _msize; only available in the debug versions of the run-time libraries

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

new

Allocate block of memory from heap

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

new[]

Allocate block of memory from heap

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_query_new_handler

Return address of current new handler routine as set by _set_new_handler

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_query_new_mode

Return integer indicating new handler mode set by _set_new_mode for malloc

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

realloc

Reallocate block to new size

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_realloc_dbg

Debug version of realloc; only available in the debug versions of the run-time libraries

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_set_new_handler

Enable error-handling mechanism when new operator fails (to allocate memory) and enable compilation of Standard Template Libraries (STL)

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

_set_new_mode

Set new handler mode for malloc

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

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