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alloc less bytes

 
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wayden
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PostPosted: Wed Jul 26, 2023 10:37 am    Post subject: alloc less bytes Reply with quote
Hi,
I wanted to know if it's possible to alloc less than 4096 bytes ?
i already tried
Code:

alloc(Mem_PointerStats,$300,GameAssembly.dll+C49B24)

but in memoryview 4096 are "accessible" like doing
Code:

alloc(Mem_PointerStats,$1000,GameAssembly.dll+C49B24)

and it's annoying since i don't need that much space
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ParkourPenguin
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PostPosted: Wed Jul 26, 2023 10:59 am    Post subject: Reply with quote
No. Memory is organized into pages where each page is 0x1000 (4096) bytes. That's the lowest amount of memory that's possible to allocate in an address space.
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Dark Byte
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PostPosted: Wed Jul 26, 2023 11:29 am    Post subject: Reply with quote
Additional fun fact, in windows you'd lose 64KB of virtual memory even if you just allocate 4KB
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wayden
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PostPosted: Thu Jul 27, 2023 4:03 am    Post subject: Reply with quote
Alright then im just gonna alloc a mainmem and define from here, thanks for the answers
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Csimbi
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PostPosted: Thu Jul 27, 2023 4:14 am    Post subject: Reply with quote
Dark Byte wrote:
Additional fun fact, in windows you'd lose 64KB of virtual memory even if you just allocate 4KB

Whaaaat? lol
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ParkourPenguin
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PostPosted: Thu Jul 27, 2023 12:03 pm    Post subject: Reply with quote
Not all 64 KiB is resident in physical memory. It's just that windows can only allocate memory on a 64 KiB boundary.
Ever notice how every VirtualAlloc always starts at an address ending in `0000`?
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