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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2017-06-27 06:07:23 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2017-06-27 06:07:23 +0000 |
commit | 1bf1084f2b10c3b47fd1a588d85d21ed0eb41d0c (patch) | |
tree | 46dcd36c86e7fbc6e5df36deb463b33e9967a6f7 /Source/JavaScriptCore/API/APIShims.h | |
parent | 32761a6cee1d0dee366b885b7b9c777e67885688 (diff) | |
download | WebKitGtk-tarball-master.tar.gz |
webkitgtk-2.16.5HEADwebkitgtk-2.16.5master
Diffstat (limited to 'Source/JavaScriptCore/API/APIShims.h')
-rw-r--r-- | Source/JavaScriptCore/API/APIShims.h | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/Source/JavaScriptCore/API/APIShims.h b/Source/JavaScriptCore/API/APIShims.h deleted file mode 100644 index a133b8ed4..000000000 --- a/Source/JavaScriptCore/API/APIShims.h +++ /dev/null @@ -1,125 +0,0 @@ -/* - * Copyright (C) 2009 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 COMPUTER, 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 COMPUTER, 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. - */ - -#ifndef APIShims_h -#define APIShims_h - -#include "CallFrame.h" -#include "GCActivityCallback.h" -#include "IncrementalSweeper.h" -#include "JSLock.h" -#include <wtf/WTFThreadData.h> - -namespace JSC { - -class APIEntryShimWithoutLock { -protected: - APIEntryShimWithoutLock(VM* vm, bool registerThread) - : m_vm(vm) - , m_entryIdentifierTable(wtfThreadData().setCurrentIdentifierTable(vm->identifierTable)) - { - if (registerThread) - vm->heap.machineThreads().addCurrentThread(); - } - - ~APIEntryShimWithoutLock() - { - wtfThreadData().setCurrentIdentifierTable(m_entryIdentifierTable); - } - -protected: - RefPtr<VM> m_vm; - IdentifierTable* m_entryIdentifierTable; -}; - -class APIEntryShim : public APIEntryShimWithoutLock { -public: - // Normal API entry - APIEntryShim(ExecState* exec, bool registerThread = true) - : APIEntryShimWithoutLock(&exec->vm(), registerThread) - , m_lockHolder(exec->vm().exclusiveThread ? 0 : exec) - { - } - - // JSPropertyNameAccumulator only has a vm. - APIEntryShim(VM* vm, bool registerThread = true) - : APIEntryShimWithoutLock(vm, registerThread) - , m_lockHolder(vm->exclusiveThread ? 0 : vm) - { - } - - ~APIEntryShim() - { - // Destroying our JSLockHolder should also destroy the VM. - m_vm.clear(); - } - -private: - JSLockHolder m_lockHolder; -}; - -class APICallbackShim { -public: - APICallbackShim(ExecState* exec) - : m_dropAllLocks(shouldDropAllLocks(exec->vm()) ? exec : nullptr) - , m_vm(&exec->vm()) - { - wtfThreadData().resetCurrentIdentifierTable(); - } - - APICallbackShim(VM& vm) - : m_dropAllLocks(shouldDropAllLocks(vm) ? &vm : nullptr) - , m_vm(&vm) - { - wtfThreadData().resetCurrentIdentifierTable(); - } - - ~APICallbackShim() - { - wtfThreadData().setCurrentIdentifierTable(m_vm->identifierTable); - } - -private: - static bool shouldDropAllLocks(VM& vm) - { - if (vm.exclusiveThread) - return false; - - // If the VM is in the middle of being destroyed then we don't want to resurrect it - // by allowing DropAllLocks to ref it. By this point the APILock has already been - // released anyways, so it doesn't matter that DropAllLocks is a no-op. - if (!vm.refCount()) - return false; - - return true; - } - - JSLock::DropAllLocks m_dropAllLocks; - VM* m_vm; -}; - -} - -#endif |