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1 parent 739bead commit 91c5eb837aaa12b007893e0bdf2d128514d19e51 @Irrelon Irrelon committed Jul 8, 2011
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+/*
+ * Copyright (C) 2006 Apple Computer, 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 APICast_h
+#define APICast_h
+
+#include "JSAPIValueWrapper.h"
+#include "JSGlobalObject.h"
+#include "JSValue.h"
+#include <wtf/UnusedParam.h>
+
+namespace JSC {
+ class ExecState;
+ class PropertyNameArray;
+ class JSGlobalData;
+ class JSObject;
+ class JSValue;
+}
+
+typedef const struct OpaqueJSContextGroup* JSContextGroupRef;
+typedef const struct OpaqueJSContext* JSContextRef;
+typedef struct OpaqueJSContext* JSGlobalContextRef;
+typedef struct OpaqueJSPropertyNameAccumulator* JSPropertyNameAccumulatorRef;
+typedef const struct OpaqueJSValue* JSValueRef;
+typedef struct OpaqueJSValue* JSObjectRef;
+
+/* Opaque typing convenience methods */
+
+inline JSC::ExecState* toJS(JSContextRef c)
+{
+ ASSERT(c);
+ return reinterpret_cast<JSC::ExecState*>(const_cast<OpaqueJSContext*>(c));
+}
+
+inline JSC::ExecState* toJS(JSGlobalContextRef c)
+{
+ ASSERT(c);
+ return reinterpret_cast<JSC::ExecState*>(c);
+}
+
+inline JSC::JSValue toJS(JSC::ExecState* exec, JSValueRef v)
+{
+ ASSERT_UNUSED(exec, exec);
+ ASSERT(v);
+#if USE(JSVALUE32_64)
+ JSC::JSCell* jsCell = reinterpret_cast<JSC::JSCell*>(const_cast<OpaqueJSValue*>(v));
+ if (!jsCell)
+ return JSC::JSValue();
+ if (jsCell->isAPIValueWrapper())
+ return static_cast<JSC::JSAPIValueWrapper*>(jsCell)->value();
+ return jsCell;
+#else
+ return JSC::JSValue::decode(reinterpret_cast<JSC::EncodedJSValue>(const_cast<OpaqueJSValue*>(v)));
+#endif
+}
+
+inline JSC::JSValue toJSForGC(JSC::ExecState* exec, JSValueRef v)
+{
+ ASSERT_UNUSED(exec, exec);
+ ASSERT(v);
+#if USE(JSVALUE32_64)
+ JSC::JSCell* jsCell = reinterpret_cast<JSC::JSCell*>(const_cast<OpaqueJSValue*>(v));
+ if (!jsCell)
+ return JSC::JSValue();
+ return jsCell;
+#else
+ return JSC::JSValue::decode(reinterpret_cast<JSC::EncodedJSValue>(const_cast<OpaqueJSValue*>(v)));
+#endif
+}
+
+inline JSC::JSObject* toJS(JSObjectRef o)
+{
+ return reinterpret_cast<JSC::JSObject*>(o);
+}
+
+inline JSC::PropertyNameArray* toJS(JSPropertyNameAccumulatorRef a)
+{
+ return reinterpret_cast<JSC::PropertyNameArray*>(a);
+}
+
+inline JSC::JSGlobalData* toJS(JSContextGroupRef g)
+{
+ return reinterpret_cast<JSC::JSGlobalData*>(const_cast<OpaqueJSContextGroup*>(g));
+}
+
+inline JSValueRef toRef(JSC::ExecState* exec, JSC::JSValue v)
+{
+#if USE(JSVALUE32_64)
+ if (!v)
+ return 0;
+ if (!v.isCell())
+ return reinterpret_cast<JSValueRef>(JSC::jsAPIValueWrapper(exec, v).asCell());
+ return reinterpret_cast<JSValueRef>(v.asCell());
+#else
+ UNUSED_PARAM(exec);
+ return reinterpret_cast<JSValueRef>(JSC::JSValue::encode(v));
+#endif
+}
+
+inline JSObjectRef toRef(JSC::JSObject* o)
+{
+ return reinterpret_cast<JSObjectRef>(o);
+}
+
+inline JSObjectRef toRef(const JSC::JSObject* o)
+{
+ return reinterpret_cast<JSObjectRef>(const_cast<JSC::JSObject*>(o));
+}
+
+inline JSContextRef toRef(JSC::ExecState* e)
+{
+ return reinterpret_cast<JSContextRef>(e);
+}
+
+inline JSGlobalContextRef toGlobalRef(JSC::ExecState* e)
+{
+ ASSERT(e == e->lexicalGlobalObject()->globalExec());
+ return reinterpret_cast<JSGlobalContextRef>(e);
+}
+
+inline JSPropertyNameAccumulatorRef toRef(JSC::PropertyNameArray* l)
+{
+ return reinterpret_cast<JSPropertyNameAccumulatorRef>(l);
+}
+
+inline JSContextGroupRef toRef(JSC::JSGlobalData* g)
+{
+ return reinterpret_cast<JSContextGroupRef>(g);
+}
+
+#endif // APICast_h
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+/*
+ * 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 "JSLock.h"
+#include <wtf/WTFThreadData.h>
+
+namespace JSC {
+
+class APIEntryShimWithoutLock {
+protected:
+ APIEntryShimWithoutLock(JSGlobalData* globalData, bool registerThread)
+ : m_globalData(globalData)
+ , m_entryIdentifierTable(wtfThreadData().setCurrentIdentifierTable(globalData->identifierTable))
+ {
+ UNUSED_PARAM(registerThread);
+#if ENABLE(JSC_MULTIPLE_THREADS)
+ if (registerThread)
+ globalData->heap.machineThreads().addCurrentThread();
+#endif
+ m_globalData->heap.activityCallback()->synchronize();
+ m_globalData->timeoutChecker.start();
+ }
+
+ ~APIEntryShimWithoutLock()
+ {
+ m_globalData->timeoutChecker.stop();
+ wtfThreadData().setCurrentIdentifierTable(m_entryIdentifierTable);
+ }
+
+private:
+ JSGlobalData* m_globalData;
+ IdentifierTable* m_entryIdentifierTable;
+};
+
+class APIEntryShim : public APIEntryShimWithoutLock {
+public:
+ // Normal API entry
+ APIEntryShim(ExecState* exec, bool registerThread = true)
+ : APIEntryShimWithoutLock(&exec->globalData(), registerThread)
+ , m_lock(exec)
+ {
+ }
+
+ // JSPropertyNameAccumulator only has a globalData.
+ APIEntryShim(JSGlobalData* globalData, bool registerThread = true)
+ : APIEntryShimWithoutLock(globalData, registerThread)
+ , m_lock(globalData->isSharedInstance() ? LockForReal : SilenceAssertionsOnly)
+ {
+ }
+
+private:
+ JSLock m_lock;
+};
+
+class APICallbackShim {
+public:
+ APICallbackShim(ExecState* exec)
+ : m_dropAllLocks(exec)
+ , m_globalData(&exec->globalData())
+ {
+ wtfThreadData().resetCurrentIdentifierTable();
+ }
+
+ ~APICallbackShim()
+ {
+ m_globalData->heap.activityCallback()->synchronize();
+ wtfThreadData().setCurrentIdentifierTable(m_globalData->identifierTable);
+ }
+
+private:
+ JSLock::DropAllLocks m_dropAllLocks;
+ JSGlobalData* m_globalData;
+};
+
+}
+
+#endif
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+/*
+ * Copyright (C) 2006, 2007 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.
+ */
+
+#include "config.h"
+#include "JSBase.h"
+#include "JSBasePrivate.h"
+
+#include "APICast.h"
+#include "APIShims.h"
+#include "Completion.h"
+#include "OpaqueJSString.h"
+#include "SourceCode.h"
+#include <interpreter/CallFrame.h>
+#include <runtime/InitializeThreading.h>
+#include <runtime/Completion.h>
+#include <runtime/JSGlobalObject.h>
+#include <runtime/JSLock.h>
+#include <runtime/JSObject.h>
+#include <wtf/text/StringHash.h>
+
+using namespace JSC;
+
+JSValueRef JSEvaluateScript(JSContextRef ctx, JSStringRef script, JSObjectRef thisObject, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
+{
+ ExecState* exec = toJS(ctx);
+ APIEntryShim entryShim(exec);
+
+ JSObject* jsThisObject = toJS(thisObject);
+
+ // evaluate sets "this" to the global object if it is NULL
+ JSGlobalObject* globalObject = exec->dynamicGlobalObject();
+ SourceCode source = makeSource(script->ustring(), sourceURL->ustring(), startingLineNumber);
+ Completion completion = evaluate(globalObject->globalExec(), globalObject->globalScopeChain(), source, jsThisObject);
+
+ if (completion.complType() == Throw) {
+ if (exception)
+ *exception = toRef(exec, completion.value());
+ return 0;
+ }
+
+ if (completion.value())
+ return toRef(exec, completion.value());
+
+ // happens, for example, when the only statement is an empty (';') statement
+ return toRef(exec, jsUndefined());
+}
+
+bool JSCheckScriptSyntax(JSContextRef ctx, JSStringRef script, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
+{
+ ExecState* exec = toJS(ctx);
+ APIEntryShim entryShim(exec);
+
+ SourceCode source = makeSource(script->ustring(), sourceURL->ustring(), startingLineNumber);
+ Completion completion = checkSyntax(exec->dynamicGlobalObject()->globalExec(), source);
+ if (completion.complType() == Throw) {
+ if (exception)
+ *exception = toRef(exec, completion.value());
+ return false;
+ }
+
+ return true;
+}
+
+void JSGarbageCollect(JSContextRef ctx)
+{
+ // We used to recommend passing NULL as an argument here, which caused the only heap to be collected.
+ // As there is no longer a shared heap, the previously recommended usage became a no-op (but the GC
+ // will happen when the context group is destroyed).
+ // Because the function argument was originally ignored, some clients may pass their released context here,
+ // in which case there is a risk of crashing if another thread performs GC on the same heap in between.
+ if (!ctx)
+ return;
+
+ ExecState* exec = toJS(ctx);
+ APIEntryShim entryShim(exec, false);
+
+ JSGlobalData& globalData = exec->globalData();
+ if (!globalData.heap.isBusy())
+ globalData.heap.collectAllGarbage();
+
+ // FIXME: Perhaps we should trigger a second mark and sweep
+ // once the garbage collector is done if this is called when
+ // the collector is busy.
+}
+
+void JSReportExtraMemoryCost(JSContextRef ctx, size_t size)
+{
+ ExecState* exec = toJS(ctx);
+ APIEntryShim entryShim(exec);
+ exec->globalData().heap.reportExtraMemoryCost(size);
+}
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