* jsc目录

JavaScriptCore/API/APICast.h

@@ -0,0 +1,153 @@
+/*
+ * 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

JavaScriptCore/API/APIShims.h

@@ -0,0 +1,104 @@
+/*
+ * 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

JavaScriptCore/API/JSBase.cpp

@@ -0,0 +1,113 @@
+/*
+ * 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);
+}