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Memory Allocation | Microsoft Docs |
11/04/2016 |
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article |
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b4470556-a128-4782-9943-2ccf7a7d9979 |
10 |
corob-msft |
corob |
ghogen |
Use these routines to allocate, free, and reallocate memory.
| Routine | Use |
|---|---|
| _alloca, _malloca | Allocate memory from stack |
| calloc | Allocate storage for array, initializing every byte in allocated block to 0 |
| _calloc_dbg | Debug version of calloc; only available in the debug versions of the run-time libraries |
| operator delete | Free allocated block |
| operator delete[] | Free allocated block |
| _expand | Expand or shrink block of memory without moving it |
| _expand_dbg | Debug version of _expand; only available in the debug versions of the run-time libraries |
| free | Free allocated block |
| _free_dbg | Debug version of free; only available in the debug versions of the run-time libraries |
| _freea | Free allocated block from stack |
| _get_heap_handle | Get Win32 HANDLE of the CRT heap. |
| _heapadd | Add memory to heap |
| _heapchk | Check heap for consistency |
| _heapmin | Release unused memory in heap |
| _heapset | Fill free heap entries with specified value |
| _heapwalk | Return information about each entry in heap |
| malloc | Allocate block of memory from heap |
| _malloc_dbg | Debug version of malloc; only available in the debug versions of the run-time libraries |
| _msize | Return size of allocated block |
| _msize_dbg | Debug version of _msize; only available in the debug versions of the run-time libraries |
| new | Allocate block of memory from heap |
| new[] | Allocate block of memory from heap |
| _query_new_handler | Return address of current new handler routine as set by _set_new_handler |
| _query_new_mode | Return integer indicating new handler mode set by _set_new_mode for malloc |
| realloc | Reallocate block to new size |
| _realloc_dbg | Debug version of realloc; only available in the debug versions of the run-time libraries |
| _set_new_handler | Enable error-handling mechanism when new operator fails (to allocate memory) and enable compilation of C++ Standard Libraries |
| _set_new_mode | Set new handler mode for malloc |