New malloc() for win32 that should produce faster DMD's and faster D code that uses malloc()

[dennis luehring]

your're right it was RtlAllocateHeap

Am 04.08.2013 11:25, schrieb Denis Shelomovskij:
> 04.08.2013 11:53, dennis luehring пОшет:
>> Am 04.08.2013 09:35, schrieb Walter Bright:
>>> On 8/4/2013 12:19 AM, Joseph Rushton Wakeling wrote:
>>>> On Sunday, 4 August 2013 at 06:07:54 UTC, dennis luehring wrote:
>>>>> ever tested nedmalloc
>>>>> (http://www.nedprod.com/programs/portable/nedmalloc/) or
>>>>> other malloc allocators?
>>>>
>>>> "Windows 7, Linux 3.x, FreeBSD 8, Mac OS X 10.6 all contain
>>>> state-of-the-art
>>>> allocators and no third party allocator is likely to significantly
>>>> improve on
>>>> them in real world results."
>>>>
>>>> So there may be minimal returns from incorporating nedmalloc on
>>>> modern OS's ... ?
>>>
>>> As I wrote earlier, Microsoft has enormous incentive to make HeapXXXX
>>> as fast as
>>> possible, as it will pay dividends for every Microsoft software
>>> product and
>>> software designed for Windows. I'm sure the engineers there know all
>>> about the
>>> various strategies available on the intarnets. Why not take advantage
>>> of their work?
>>
>> HeapAlloc is a forwarder to RtlHeapAlloc and C++ new does call
>> RtlHeapAlloc directly - would it be better to use this kernel32 api
>> directly? (maybe if used in druntime to reduce dll dependencies)
>>
>
> Up to Windows XP (at least) KERNEL32's HeapAlloc function is forwarded
> to RtlAllocateHeap [1] function exported by NTDLL so there is no runtime
> performance overhead.
>
> There is no RtlHeapAlloc function on my Windows XP and I can't find any
> information about it on the web. Looks like a Windows 6.x stuff or a
> mistake in name.
>
> Also note there are tons of errors because of such "slightly different"
> names. If we are talking about "Heap*" functions:
> 1. Incorrect "RtlAllocHeap" name here [2].
> 2. Incorrect "HeapFree" function signature (4-byte BOOL is returned but
> it is just a wrapper of RtlFreeHeap which returns 1-byte BOOLEAN) (fixed
> in Windows 6.x).
>
> [1]
> http://msdn.microsoft.com/en-us/library/windows/hardware/ff552108(v=vs.85).aspx
> [2] http://msdn.microsoft.com/ru-ru/magazine/cc301808(en-us).aspx
>