projects / apple / javascriptcore.git / blame
| Commit | Line | Data |
|---|---|---|
| 6fe7ccc8 A |
1 | /* |
| 2 | * Copyright (C) 2009, 2011 Apple Inc. All rights reserved. | |
| 3 | * | |
| 4 | * Redistribution and use in source and binary forms, with or without | |
| 5 | * modification, are permitted provided that the following conditions | |
| 6 | * are met: | |
| 7 | * 1. Redistributions of source code must retain the above copyright | |
| 8 | * notice, this list of conditions and the following disclaimer. | |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 | * notice, this list of conditions and the following disclaimer in the | |
| 11 | * documentation and/or other materials provided with the distribution. | |
| 12 | * | |
| 13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY | |
| 14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR | |
| 17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 | */ | |
| 25 | ||
| 26 | #ifndef HeapRootVisitor_h | |
| 27 | #define HeapRootVisitor_h | |
| 28 | ||
| 29 | #include "SlotVisitor.h" | |
| 93a37866 | 30 | #include "SlotVisitorInlines.h" |
| 6fe7ccc8 A |
31 | |
| 32 | namespace JSC { | |
| 33 | ||
| 34 | // Privileged class for marking JSValues directly. It is only safe to use | |
| 35 | // this class to mark direct heap roots that are marked during every GC pass. | |
| 36 | // All other references should be wrapped in WriteBarriers. | |
| 37 | class HeapRootVisitor { | |
| 38 | private: | |
| 39 | friend class Heap; | |
| 40 | HeapRootVisitor(SlotVisitor&); | |
| 41 | ||
| 42 | public: | |
| 43 | void visit(JSValue*); | |
| 44 | void visit(JSValue*, size_t); | |
| 45 | void visit(JSString**); | |
| 46 | void visit(JSCell**); | |
| 47 | ||
| 48 | SlotVisitor& visitor(); | |
| 49 | ||
| 50 | private: | |
| 51 | SlotVisitor& m_visitor; | |
| 52 | }; | |
| 53 | ||
| 54 | inline HeapRootVisitor::HeapRootVisitor(SlotVisitor& visitor) | |
| 55 | : m_visitor(visitor) | |
| 56 | { | |
| 57 | } | |
| 58 | ||
| 59 | inline void HeapRootVisitor::visit(JSValue* slot) | |
| 60 | { | |
| 61 | m_visitor.append(slot); | |
| 62 | } | |
| 63 | ||
| 64 | inline void HeapRootVisitor::visit(JSValue* slot, size_t count) | |
| 65 | { | |
| 66 | m_visitor.append(slot, count); | |
| 67 | } | |
| 68 | ||
| 69 | inline void HeapRootVisitor::visit(JSString** slot) | |
| 70 | { | |
| 71 | m_visitor.append(reinterpret_cast<JSCell**>(slot)); | |
| 72 | } | |
| 73 | ||
| 74 | inline void HeapRootVisitor::visit(JSCell** slot) | |
| 75 | { | |
| 76 | m_visitor.append(slot); | |
| 77 | } | |
| 78 | ||
| 79 | inline SlotVisitor& HeapRootVisitor::visitor() | |
| 80 | { | |
| 81 | return m_visitor; | |
| 82 | } | |
| 83 | ||
| 84 | } // namespace JSC | |
| 85 | ||
| 86 | #endif // HeapRootVisitor_h |