malloc_base.cpp File Reference

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

Include dependency graph for malloc_base.cpp:

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Functions
	__declspec (noinline) _CRTRESTRICT void *__cdecl _malloc_base(size_t const size)

Function Documentation

__declspec()

__declspec

(

noinline

)

const

Definition at line 23 of file malloc_base.cpp.

{
    // Ensure that the requested size is not too large:
    _VALIDATE_RETURN_NOEXC(_HEAP_MAXREQ >= size, ENOMEM, nullptr);
 
    // Ensure we request an allocation of at least one byte:
    size_t const actual_size = size == 0 ? 1 : size;
 
    for (;;)
    {
        void* const block = HeapAlloc(__acrt_heap, 0, actual_size);
        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_size))
        {
            errno = ENOMEM;
            return nullptr;
        }
 
        // The new handler was successful; try to allocate again...
    }
}