72ddd15355
This reverts commit1de23dc2a6. This reverts commitdc7de1e170. This reverts commit0891965b10. This reverts commit52c855715a. This reverts commitfcdc85d6b4. This reverts commit1fa61503c2. This reverts commitdf279eb40e. This reverts commitdd4278a7d5.
60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: set ts=2 sw=2 et tw=78:
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#ifndef DOM_Arena_h___
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#define DOM_Arena_h___
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#include "nsISupportsImpl.h"
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#include "mozmemory.h"
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#include "mozilla/mozalloc_oom.h" // for mozalloc_handle_oom
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#define NS_DECL_DOMARENA_DESTROY void Destroy(void);
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#define NS_IMPL_DOMARENA_DESTROY(class) \
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void class ::Destroy(void) { \
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if (StaticPrefs::dom_arena_allocator_enabled_AtStartup()) { \
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RefPtr<nsNodeInfoManager> nim = OwnerDoc()->NodeInfoManager(); \
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RefPtr<DOMArena> arena = \
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HasFlag(NODE_KEEPS_DOMARENA) \
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? nsContentUtils::TakeEntryFromDOMArenaTable(this) \
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: nullptr; \
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this->~class(); \
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MOZ_ASSERT(nim, "nsNodeInfoManager needs to be initialized"); \
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nim->Free(this); \
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} else { \
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delete this; \
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} \
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}
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namespace mozilla::dom {
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class DOMArena {
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public:
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friend class DocGroup;
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DOMArena() {
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arena_params_t params;
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params.mMaxDirtyIncreaseOverride = 7;
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params.mFlags = ARENA_FLAG_THREAD_MAIN_THREAD_ONLY;
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mArenaId = moz_create_arena_with_params(¶ms);
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}
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NS_INLINE_DECL_REFCOUNTING(DOMArena)
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void* Allocate(size_t aSize) {
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void* ret = moz_arena_malloc(mArenaId, aSize);
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if (!ret) {
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mozalloc_handle_oom(aSize);
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}
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return ret;
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}
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private:
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~DOMArena() { moz_dispose_arena(mArenaId); }
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arena_id_t mArenaId;
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};
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} // namespace mozilla::dom
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#endif
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