calloc_base.cpp File Reference

#include <corecrt_internal.h>
#include <malloc.h>
#include <new.h>

Include dependency graph for calloc_base.cpp:

Go to the source code of this file.

Functions
	__declspec (noinline) _CRTRESTRICT void *__cdecl _calloc_base(size_t const count
	for (;;)

Variables
size_t const	size
size_t const	requested_block_size = count * size
size_t const	actual_block_size

Function Documentation

__declspec()

__declspec

(

noinline

)

const

for()

for

(

;;

)

Definition at line 33 of file calloc_base.cpp.

    {
        void* const block = HeapAlloc(__acrt_heap, HEAP_ZERO_MEMORY, actual_block_size);
 
        // If allocation succeeded, return the pointer to the new block:
        if (block)
        {
            return block;
        }
 
        // Otherwise, see if we need to call the new handler, and if so call it.
        // If the new handler fails, just return nullptr:
        if (_query_new_mode() == 0 || !_callnewh(actual_block_size))
        {
            errno = ENOMEM;
            return nullptr;
        }
 
        // The new handler was successful; try to allocate aagain...
    }

Variable Documentation

actual_block_size

size_t const actual_block_size

Initial value:

= requested_block_size == 0
        ? 1
        : requested_block_size

Definition at line 29 of file calloc_base.cpp.

Referenced by for().

requested_block_size

size_t const requested_block_size = count * size

Definition at line 28 of file calloc_base.cpp.

size

size_t const size

Initial value:

{
    
    _VALIDATE_RETURN_NOEXC(count == 0 || (_HEAP_MAXREQ / count) >= size, ENOMEM, nullptr)

Definition at line 21 of file calloc_base.cpp.