From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- js/src/gc/StableCellHasher.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 js/src/gc/StableCellHasher.h (limited to 'js/src/gc/StableCellHasher.h') diff --git a/js/src/gc/StableCellHasher.h b/js/src/gc/StableCellHasher.h new file mode 100644 index 0000000000..45cefd76e9 --- /dev/null +++ b/js/src/gc/StableCellHasher.h @@ -0,0 +1,43 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * vim: set ts=8 sts=2 et sw=2 tw=80: + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef gc_StableCellHasher_h +#define gc_StableCellHasher_h + +#include "js/RootingAPI.h" +#include "js/TypeDecls.h" + +// StableCellHasher itself is defined in js/public/RootingAPI.h. + +namespace js::gc { + +struct Cell; + +// Gets an existing UID in |uidp| if one exists. +[[nodiscard]] bool MaybeGetUniqueId(Cell* cell, uint64_t* uidp); + +// Puts an existing UID in |uidp|, or creates a new UID for this Cell and +// puts that into |uidp|. Returns false on OOM. +[[nodiscard]] bool GetOrCreateUniqueId(Cell* cell, uint64_t* uidp); + +uint64_t GetUniqueIdInfallible(Cell* cell); + +// Return true if this cell has a UID associated with it. +[[nodiscard]] bool HasUniqueId(Cell* cell); + +// Transfer an id from another cell. This must only be called on behalf of a +// moving GC. This method is infallible. +void TransferUniqueId(Cell* tgt, Cell* src); + +// Remove any unique id associated with this Cell. +void RemoveUniqueId(Cell* cell); + +// Used to restore unique ID after JSObject::swap. +bool SetOrUpdateUniqueId(JSContext* cx, Cell* cell, uint64_t uid); + +} // namespace js::gc + +#endif // gc_StableCellHasher_h -- cgit v1.2.3