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Diff for: ‎API/APICast.h

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/*
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* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef APICast_h
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#define APICast_h
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#include "JSAPIValueWrapper.h"
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#include "JSGlobalObject.h"
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#include "JSValue.h"
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#include <wtf/UnusedParam.h>
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namespace JSC {
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class ExecState;
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class PropertyNameArray;
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class JSGlobalData;
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class JSObject;
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class JSValue;
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}
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typedef const struct OpaqueJSContextGroup* JSContextGroupRef;
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typedef const struct OpaqueJSContext* JSContextRef;
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typedef struct OpaqueJSContext* JSGlobalContextRef;
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typedef struct OpaqueJSPropertyNameAccumulator* JSPropertyNameAccumulatorRef;
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typedef const struct OpaqueJSValue* JSValueRef;
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typedef struct OpaqueJSValue* JSObjectRef;
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/* Opaque typing convenience methods */
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inline JSC::ExecState* toJS(JSContextRef c)
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{
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ASSERT(c);
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return reinterpret_cast<JSC::ExecState*>(const_cast<OpaqueJSContext*>(c));
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}
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inline JSC::ExecState* toJS(JSGlobalContextRef c)
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{
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ASSERT(c);
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return reinterpret_cast<JSC::ExecState*>(c);
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}
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inline JSC::JSValue toJS(JSC::ExecState* exec, JSValueRef v)
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{
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ASSERT_UNUSED(exec, exec);
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ASSERT(v);
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#if USE(JSVALUE32_64)
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JSC::JSCell* jsCell = reinterpret_cast<JSC::JSCell*>(const_cast<OpaqueJSValue*>(v));
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if (!jsCell)
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return JSC::JSValue();
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if (jsCell->isAPIValueWrapper())
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return static_cast<JSC::JSAPIValueWrapper*>(jsCell)->value();
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return jsCell;
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#else
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return JSC::JSValue::decode(reinterpret_cast<JSC::EncodedJSValue>(const_cast<OpaqueJSValue*>(v)));
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#endif
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}
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inline JSC::JSValue toJSForGC(JSC::ExecState* exec, JSValueRef v)
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{
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ASSERT_UNUSED(exec, exec);
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ASSERT(v);
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#if USE(JSVALUE32_64)
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JSC::JSCell* jsCell = reinterpret_cast<JSC::JSCell*>(const_cast<OpaqueJSValue*>(v));
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if (!jsCell)
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return JSC::JSValue();
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return jsCell;
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#else
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return JSC::JSValue::decode(reinterpret_cast<JSC::EncodedJSValue>(const_cast<OpaqueJSValue*>(v)));
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#endif
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}
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inline JSC::JSObject* toJS(JSObjectRef o)
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{
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return reinterpret_cast<JSC::JSObject*>(o);
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}
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inline JSC::PropertyNameArray* toJS(JSPropertyNameAccumulatorRef a)
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{
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return reinterpret_cast<JSC::PropertyNameArray*>(a);
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}
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inline JSC::JSGlobalData* toJS(JSContextGroupRef g)
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{
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return reinterpret_cast<JSC::JSGlobalData*>(const_cast<OpaqueJSContextGroup*>(g));
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}
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inline JSValueRef toRef(JSC::ExecState* exec, JSC::JSValue v)
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{
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#if USE(JSVALUE32_64)
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if (!v)
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return 0;
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if (!v.isCell())
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return reinterpret_cast<JSValueRef>(JSC::jsAPIValueWrapper(exec, v).asCell());
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return reinterpret_cast<JSValueRef>(v.asCell());
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#else
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UNUSED_PARAM(exec);
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return reinterpret_cast<JSValueRef>(JSC::JSValue::encode(v));
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#endif
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}
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inline JSObjectRef toRef(JSC::JSObject* o)
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{
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return reinterpret_cast<JSObjectRef>(o);
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}
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inline JSObjectRef toRef(const JSC::JSObject* o)
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{
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return reinterpret_cast<JSObjectRef>(const_cast<JSC::JSObject*>(o));
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}
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inline JSContextRef toRef(JSC::ExecState* e)
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{
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return reinterpret_cast<JSContextRef>(e);
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}
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inline JSGlobalContextRef toGlobalRef(JSC::ExecState* e)
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{
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ASSERT(e == e->lexicalGlobalObject()->globalExec());
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return reinterpret_cast<JSGlobalContextRef>(e);
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}
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inline JSPropertyNameAccumulatorRef toRef(JSC::PropertyNameArray* l)
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{
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return reinterpret_cast<JSPropertyNameAccumulatorRef>(l);
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}
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inline JSContextGroupRef toRef(JSC::JSGlobalData* g)
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{
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return reinterpret_cast<JSContextGroupRef>(g);
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}
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#endif // APICast_h

Diff for: ‎API/APIShims.h

+104
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/*
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* Copyright (C) 2009 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
8+
* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
11+
* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* 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 COMPUTER, 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
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef APIShims_h
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#define APIShims_h
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#include "CallFrame.h"
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#include "GCActivityCallback.h"
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#include "JSLock.h"
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#include <wtf/WTFThreadData.h>
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namespace JSC {
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class APIEntryShimWithoutLock {
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protected:
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APIEntryShimWithoutLock(JSGlobalData* globalData, bool registerThread)
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: m_globalData(globalData)
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, m_entryIdentifierTable(wtfThreadData().setCurrentIdentifierTable(globalData->identifierTable))
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{
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UNUSED_PARAM(registerThread);
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#if ENABLE(JSC_MULTIPLE_THREADS)
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if (registerThread)
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globalData->heap.machineThreads().addCurrentThread();
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#endif
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m_globalData->heap.activityCallback()->synchronize();
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m_globalData->timeoutChecker.start();
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}
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~APIEntryShimWithoutLock()
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{
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m_globalData->timeoutChecker.stop();
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wtfThreadData().setCurrentIdentifierTable(m_entryIdentifierTable);
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}
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private:
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JSGlobalData* m_globalData;
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IdentifierTable* m_entryIdentifierTable;
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};
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class APIEntryShim : public APIEntryShimWithoutLock {
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public:
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// Normal API entry
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APIEntryShim(ExecState* exec, bool registerThread = true)
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: APIEntryShimWithoutLock(&exec->globalData(), registerThread)
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, m_lock(exec)
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{
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}
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// JSPropertyNameAccumulator only has a globalData.
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APIEntryShim(JSGlobalData* globalData, bool registerThread = true)
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: APIEntryShimWithoutLock(globalData, registerThread)
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, m_lock(globalData->isSharedInstance() ? LockForReal : SilenceAssertionsOnly)
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{
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}
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private:
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JSLock m_lock;
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};
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class APICallbackShim {
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public:
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APICallbackShim(ExecState* exec)
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: m_dropAllLocks(exec)
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, m_globalData(&exec->globalData())
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{
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wtfThreadData().resetCurrentIdentifierTable();
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}
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~APICallbackShim()
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{
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m_globalData->heap.activityCallback()->synchronize();
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wtfThreadData().setCurrentIdentifierTable(m_globalData->identifierTable);
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}
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private:
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JSLock::DropAllLocks m_dropAllLocks;
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JSGlobalData* m_globalData;
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};
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}
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#endif

Diff for: ‎API/JSBase.cpp

+113
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/*
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* Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
6+
* are met:
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* 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+
*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, 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 COMPUTER, 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
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "JSBase.h"
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#include "JSBasePrivate.h"
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#include "APICast.h"
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#include "APIShims.h"
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#include "Completion.h"
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#include "OpaqueJSString.h"
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#include "SourceCode.h"
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#include <interpreter/CallFrame.h>
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#include <runtime/InitializeThreading.h>
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#include <runtime/Completion.h>
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#include <runtime/JSGlobalObject.h>
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#include <runtime/JSLock.h>
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#include <runtime/JSObject.h>
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#include <wtf/text/StringHash.h>
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using namespace JSC;
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JSValueRef JSEvaluateScript(JSContextRef ctx, JSStringRef script, JSObjectRef thisObject, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
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{
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ExecState* exec = toJS(ctx);
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APIEntryShim entryShim(exec);
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JSObject* jsThisObject = toJS(thisObject);
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// evaluate sets "this" to the global object if it is NULL
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JSGlobalObject* globalObject = exec->dynamicGlobalObject();
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SourceCode source = makeSource(script->ustring(), sourceURL->ustring(), startingLineNumber);
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Completion completion = evaluate(globalObject->globalExec(), globalObject->globalScopeChain(), source, jsThisObject);
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if (completion.complType() == Throw) {
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if (exception)
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*exception = toRef(exec, completion.value());
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return 0;
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}
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if (completion.value())
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return toRef(exec, completion.value());
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// happens, for example, when the only statement is an empty (';') statement
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return toRef(exec, jsUndefined());
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}
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bool JSCheckScriptSyntax(JSContextRef ctx, JSStringRef script, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
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{
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ExecState* exec = toJS(ctx);
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APIEntryShim entryShim(exec);
74+
75+
SourceCode source = makeSource(script->ustring(), sourceURL->ustring(), startingLineNumber);
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Completion completion = checkSyntax(exec->dynamicGlobalObject()->globalExec(), source);
77+
if (completion.complType() == Throw) {
78+
if (exception)
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*exception = toRef(exec, completion.value());
80+
return false;
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}
82+
83+
return true;
84+
}
85+
86+
void JSGarbageCollect(JSContextRef ctx)
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{
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// We used to recommend passing NULL as an argument here, which caused the only heap to be collected.
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// As there is no longer a shared heap, the previously recommended usage became a no-op (but the GC
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// will happen when the context group is destroyed).
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// Because the function argument was originally ignored, some clients may pass their released context here,
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// in which case there is a risk of crashing if another thread performs GC on the same heap in between.
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if (!ctx)
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return;
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ExecState* exec = toJS(ctx);
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APIEntryShim entryShim(exec, false);
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JSGlobalData& globalData = exec->globalData();
100+
if (!globalData.heap.isBusy())
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globalData.heap.collectAllGarbage();
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// FIXME: Perhaps we should trigger a second mark and sweep
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// once the garbage collector is done if this is called when
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// the collector is busy.
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}
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void JSReportExtraMemoryCost(JSContextRef ctx, size_t size)
109+
{
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ExecState* exec = toJS(ctx);
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APIEntryShim entryShim(exec);
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exec->globalData().heap.reportExtraMemoryCost(size);
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}

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