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 --- xpcom/ds/nsPointerHashKeys.h | 49 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 xpcom/ds/nsPointerHashKeys.h (limited to 'xpcom/ds/nsPointerHashKeys.h') diff --git a/xpcom/ds/nsPointerHashKeys.h b/xpcom/ds/nsPointerHashKeys.h new file mode 100644 index 0000000000..0a4af3b2f8 --- /dev/null +++ b/xpcom/ds/nsPointerHashKeys.h @@ -0,0 +1,49 @@ +/* -*- 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/. */ + +/* Definitions for nsPtrHashKey and nsVoidPtrHashKey. */ + +#ifndef nsPointerHashKeys_h +#define nsPointerHashKeys_h + +#include "nscore.h" + +#include "mozilla/Attributes.h" +#include "mozilla/HashFunctions.h" + +#include "PLDHashTable.h" + +/** + * hashkey wrapper using T* KeyType + * + * @see nsTHashtable::EntryType for specification + */ +template +class nsPtrHashKey : public PLDHashEntryHdr { + public: + using KeyType = T*; + using KeyTypePointer = const T*; + + explicit nsPtrHashKey(const T* aKey) : mKey(const_cast(aKey)) {} + nsPtrHashKey(nsPtrHashKey&& aToMove) = default; + ~nsPtrHashKey() = default; + + KeyType GetKey() const { return mKey; } + bool KeyEquals(KeyTypePointer aKey) const { return aKey == mKey; } + + static KeyTypePointer KeyToPointer(KeyType aKey) { return aKey; } + static PLDHashNumber HashKey(KeyTypePointer aKey) { + return mozilla::HashGeneric(aKey); + } + enum { ALLOW_MEMMOVE = true }; + + protected: + T* MOZ_NON_OWNING_REF mKey; +}; + +using nsVoidPtrHashKey = nsPtrHashKey; + +#endif // nsPointerHashKeys_h -- cgit v1.2.3