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[common] Switch to boost::unordered_flat containers (#4326)

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Replaces all instances of ankerl's unordered map/set with boost's
`unordered_flat_*` classes. This uses std::hash since boost::hash is
actually a lot slower.

Also adds an abstraction layer in `Common` so future changes are quicker
and easier.

Other implementation details:
- ankerl provided hash specializations for tuple and pair, so those were
  ported here
- std::erase_if doesn't work on boost, so just used the ADL'd erase_if

This should be about equal or superior performance as unordered_dense for everything except iteration.

Signed-off-by: crueter <crueter@eden-emu.dev>

- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions).
- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md)
- [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability.

-------------------

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4326
Reviewed-by: Lizzie and Samuel <lizzie@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
This commit is contained in:
crueter
2026-08-31 02:58:09 +02:00
parent 106a61c943
commit 7fda6dde73
118 changed files with 348 additions and 340 deletions
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src/common/x64/xbyak.h
+4 -3
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@@ -22,10 +22,11 @@
#endif
// You must ensure this matches with src/common/x64/xbyak.h on root dir
#include <ankerl/unordered_dense.h>
#include "common/container/unordered_map.h"
#include "common/container/unordered_set.h"
#include <boost/unordered_map.hpp>
#define XBYAK_STD_UNORDERED_SET ankerl::unordered_dense::set
#define XBYAK_STD_UNORDERED_MAP ankerl::unordered_dense::map
#define XBYAK_STD_UNORDERED_SET ::Common::unordered_set
#define XBYAK_STD_UNORDERED_MAP ::Common::unordered_map
#define XBYAK_STD_UNORDERED_MULTIMAP boost::unordered_multimap
#include <xbyak/xbyak.h>
#include <xbyak/xbyak_util.h>