Chi-Kuan Chiu

[Doc] Box64 Memory Allocator (for review and feedback)

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This document describes the memory management design in Box64 (`custommem.c`). The goal is to verify the correctness and gather feedback for improvements. Below is the current draft: ### High-Level Overview...

Why does Box64 use a fixed 128 bitmap for small allocations?

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In `src/custommem.c` the function: ```c void* map128_customMalloc(size_t size, int is32bits) { size = 128; … } ``` hard-codes every allocation to 128 bytes. However, In my profiling (box64 + wine...

[RBTREE] Refactor `rb_*` APIs to Generic Naming for Future Flexibility

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The current API set for range management is tightly coupled to the rbtree implementation, with function names prefixed as `rb_*`. However, the underlying data structure may evolve in the future....

SIGSEGV in `Bitfield` Task (x86 NBench with `-m32 -mno-sse`)

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When running the x86 version of [NBench](https://github.com/nfinit/ansibench/tree/master/nbench), compiled with the `-m32 -mno-sse` flag, the Bitfield task(Executes a variety of bit manipulation functions.) consistently results in a segmentation fault. ### Logs...

Infinite Log Loop and Segfault Wrapping libfontconfig.so.1

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I'm trying to run `box64 wine control` on RISC-V [Voyager](https://www.andestech.com/en/2024/05/30/andes-technology-announced-the-qilai-soc-and/) using the same configuration as in issue #2645. When I execute: ``` BOX64_DYNAREC_RV64NOEXT=1 box64 wine64 control ``` I encounter this...

I made a local [commit](https://github.com/devarajabc/box64/commit/1b00139bbf932ae958f8b8ac52e4da435bd0c696) and it passes my tests ( CI and ansibenchmark), saving one **O(log n)** tree lookup on every call. However, I'm not sure if I missed...

Clarification on the Usage and Purpose of the `dynamap` Red-Black Tree in Box64

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While examining Box64's memory management system, particularly the usage of `rbtree`, I observed unusual behavior involving the `dynamap` tree. By running Box64 combined with Wine64 on a Windows 64-bit chess...

Reduce `ringbuf_element_t` from 8 bytes to 4 bytes by encoding the `gap` flag into the LSB of the size field. Since all payload sizes are padded to 8 bytes, the...

Reduce peak RSS via cold dynablock reclamation

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Telemetry on workload(same config as in issue #2511 but with the new version of box64) shows that **~80.6%** of blocks(total 12,478 blocks) and **~77.2%** of bytes are freed only in...

Clarification on the Purpose of Red-Black Trees in Box64

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I have noticed that in `custommem.c`, memory ranges mapped by mmap are simultaneously recorded and removed in multiple red-black trees. Each node encapsulate a memory range along with detailed information...