| 1 | /* |
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| 2 | * Copyright (C) 2009 Apple Inc. All rights reserved. |
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| 3 | * |
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| 4 | * Redistribution and use in source and binary forms, with or without |
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| 5 | * modification, are permitted provided that the following conditions |
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| 6 | * are met: |
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| 7 | * 1. Redistributions of source code must retain the above copyright |
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| 8 | * notice, this list of conditions and the following disclaimer. |
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| 9 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer in the |
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| 11 | * documentation and/or other materials provided with the distribution. |
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| 12 | * |
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| 13 | * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
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| 14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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| 16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
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| 17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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| 18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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| 19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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| 20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
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| 21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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| 23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 24 | */ |
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| 25 | |
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| 26 | #ifndef APIShims_h |
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| 27 | #define APIShims_h |
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| 28 | |
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| 29 | #include "CallFrame.h" |
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| 30 | #include "JSLock.h" |
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| 31 | |
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| 32 | namespace JSC { |
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| 33 | |
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| 34 | class APIEntryShimWithoutLock { |
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| 35 | protected: |
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| 36 | APIEntryShimWithoutLock(JSGlobalData* globalData, bool registerThread) |
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| 37 | : m_globalData(globalData) |
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| 38 | , m_entryIdentifierTable(setCurrentIdentifierTable(globalData->identifierTable)) |
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| 39 | { |
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| 40 | if (registerThread) |
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| 41 | globalData->heap.registerThread(); |
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| 42 | m_globalData->timeoutChecker->start(); |
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| 43 | } |
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| 44 | |
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| 45 | ~APIEntryShimWithoutLock() |
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| 46 | { |
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| 47 | m_globalData->timeoutChecker->stop(); |
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| 48 | setCurrentIdentifierTable(m_entryIdentifierTable); |
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| 49 | } |
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| 50 | |
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| 51 | private: |
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| 52 | JSGlobalData* m_globalData; |
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| 53 | IdentifierTable* m_entryIdentifierTable; |
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| 54 | }; |
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| 55 | |
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| 56 | class APIEntryShim : public APIEntryShimWithoutLock { |
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| 57 | public: |
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| 58 | // Normal API entry |
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| 59 | APIEntryShim(ExecState* exec, bool registerThread = true) |
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| 60 | : APIEntryShimWithoutLock(&exec->globalData(), registerThread) |
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| 61 | , m_lock(exec) |
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| 62 | { |
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| 63 | } |
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| 64 | |
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| 65 | // JSPropertyNameAccumulator only has a globalData. |
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| 66 | APIEntryShim(JSGlobalData* globalData, bool registerThread = true) |
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| 67 | : APIEntryShimWithoutLock(globalData, registerThread) |
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| 68 | , m_lock(globalData->isSharedInstance ? LockForReal : SilenceAssertionsOnly) |
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| 69 | { |
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| 70 | } |
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| 71 | |
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| 72 | private: |
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| 73 | JSLock m_lock; |
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| 74 | }; |
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| 75 | |
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| 76 | class APICallbackShim { |
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| 77 | public: |
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| 78 | APICallbackShim(ExecState* exec) |
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| 79 | : m_dropAllLocks(exec) |
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| 80 | , m_globalData(&exec->globalData()) |
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| 81 | { |
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| 82 | resetCurrentIdentifierTable(); |
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| 83 | m_globalData->timeoutChecker->start(); |
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| 84 | } |
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| 85 | |
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| 86 | ~APICallbackShim() |
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| 87 | { |
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| 88 | m_globalData->timeoutChecker->stop(); |
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| 89 | setCurrentIdentifierTable(m_globalData->identifierTable); |
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| 90 | } |
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| 91 | |
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| 92 | private: |
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| 93 | JSLock::DropAllLocks m_dropAllLocks; |
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| 94 | JSGlobalData* m_globalData; |
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| 95 | }; |
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| 96 | |
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| 97 | } |
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| 98 | |
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| 99 | #endif |
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| 100 | |
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