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Static allocator polymorphism (#22227)

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* Define a generic allocator interface to enable static polymorphism for
allocators (see `GenericAllocator` in `src/allocators.zig`). Note that
`std.mem.Allocator` itself is considered a generic allocator.
* Add utilities to `bun.allocators` for working with generic allocators.
* Add a new namespace, `bun.memory`, with basic utilities for working
with memory and objects (`create`, `destroy`, `initDefault`, `deinit`).
* Add `bun.DefaultAllocator`, a zero-sized generic allocator type whose
`allocator` method simply returns `bun.default_allocator`.
* Implement the generic allocator interface in `AllocationScope` and
`MimallocArena`.
* Improve `bun.threading.GuardedValue` (now `bun.threading.Guarded`).
* Improve `bun.safety.AllocPtr` (now `bun.safety.CheckedAllocator`).

(For internal tracking: fixes STAB-1085, STAB-1086, STAB-1087,
STAB-1088, STAB-1089, STAB-1090, STAB-1091)
This commit is contained in:
taylor.fish
2025-09-03 15:40:44 -07:00
committed by GitHub
parent 0759da233f
commit 3d361c8b49
34 changed files with 1640 additions and 1224 deletions
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4
src/string/MutableString.zig
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@@ -245,13 +245,13 @@ pub fn toOwnedSlice(self: *MutableString) []u8 {
}
pub fn toDynamicOwned(self: *MutableString) DynamicOwned([]u8) {
return .fromRawOwned(self.toOwnedSlice(), self.allocator);
return .fromRawIn(self.toOwnedSlice(), self.allocator);
}
/// `self.allocator` must be `bun.default_allocator`.
pub fn toDefaultOwned(self: *MutableString) Owned([]u8) {
bun.safety.alloc.assertEq(self.allocator, bun.default_allocator);
return .fromRawOwned(self.toOwnedSlice());
return .fromRaw(self.toOwnedSlice());
}
pub fn slice(self: *MutableString) []u8 {