| /* |
| * Copyright (C) 2017 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #include "BAssert.h" |
| #include "BInline.h" |
| #include "Gigacage.h" |
| |
| namespace bmalloc { |
| |
| enum class HeapKind { |
| Primary, |
| PrimitiveGigacage, |
| JSValueGigacage, |
| StringGigacage |
| }; |
| |
| static constexpr unsigned numHeaps = 4; |
| |
| BINLINE bool isGigacage(HeapKind heapKind) |
| { |
| switch (heapKind) { |
| case HeapKind::Primary: |
| return false; |
| case HeapKind::PrimitiveGigacage: |
| case HeapKind::JSValueGigacage: |
| case HeapKind::StringGigacage: |
| return true; |
| } |
| BCRASH(); |
| return false; |
| } |
| |
| BINLINE Gigacage::Kind gigacageKind(HeapKind kind) |
| { |
| switch (kind) { |
| case HeapKind::Primary: |
| BCRASH(); |
| return Gigacage::Primitive; |
| case HeapKind::PrimitiveGigacage: |
| return Gigacage::Primitive; |
| case HeapKind::JSValueGigacage: |
| return Gigacage::JSValue; |
| case HeapKind::StringGigacage: |
| return Gigacage::String; |
| } |
| BCRASH(); |
| return Gigacage::Primitive; |
| } |
| |
| BINLINE HeapKind heapKind(Gigacage::Kind kind) |
| { |
| switch (kind) { |
| case Gigacage::Primitive: |
| return HeapKind::PrimitiveGigacage; |
| case Gigacage::JSValue: |
| return HeapKind::JSValueGigacage; |
| case Gigacage::String: |
| return HeapKind::StringGigacage; |
| } |
| BCRASH(); |
| return HeapKind::Primary; |
| } |
| |
| BINLINE bool isActiveHeapKindAfterEnsuringGigacage(HeapKind kind) |
| { |
| switch (kind) { |
| case HeapKind::PrimitiveGigacage: |
| case HeapKind::JSValueGigacage: |
| case HeapKind::StringGigacage: |
| if (Gigacage::wasEnabled()) |
| return true; |
| return false; |
| default: |
| return true; |
| } |
| } |
| |
| BEXPORT bool isActiveHeapKind(HeapKind); |
| |
| BINLINE HeapKind mapToActiveHeapKindAfterEnsuringGigacage(HeapKind kind) |
| { |
| switch (kind) { |
| case HeapKind::PrimitiveGigacage: |
| case HeapKind::JSValueGigacage: |
| case HeapKind::StringGigacage: |
| if (Gigacage::wasEnabled()) |
| return kind; |
| return HeapKind::Primary; |
| default: |
| return kind; |
| } |
| } |
| |
| BEXPORT HeapKind mapToActiveHeapKind(HeapKind); |
| |
| } // namespace bmalloc |
| |