2 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
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5 * modification, are permitted provided that the following conditions
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28 #include "JSBasePrivate.h"
32 #include "OpaqueJSString.h"
33 #include "SourceCode.h"
34 #include <interpreter/CallFrame.h>
35 #include <runtime/InitializeThreading.h>
36 #include <runtime/Completion.h>
37 #include <runtime/JSGlobalObject.h>
38 #include <runtime/JSLock.h>
39 #include <runtime/JSObject.h>
40 #include <wtf/text/StringHash.h>
44 JSValueRef JSEvaluateScript(JSContextRef ctx, JSStringRef script, JSObjectRef thisObject, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
46 ExecState* exec = toJS(ctx);
47 APIEntryShim entryShim(exec);
49 JSObject* jsThisObject = toJS(thisObject);
51 // evaluate sets "this" to the global object if it is NULL
52 JSGlobalObject* globalObject = exec->dynamicGlobalObject();
53 SourceCode source = makeSource(script->ustring(), sourceURL->ustring(), startingLineNumber);
55 JSValue evaluationException;
56 JSValue returnValue = evaluate(globalObject->globalExec(), globalObject->globalScopeChain(), source, jsThisObject, &evaluationException);
58 if (evaluationException) {
60 *exception = toRef(exec, evaluationException);
65 return toRef(exec, returnValue);
67 // happens, for example, when the only statement is an empty (';') statement
68 return toRef(exec, jsUndefined());
71 bool JSCheckScriptSyntax(JSContextRef ctx, JSStringRef script, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
73 ExecState* exec = toJS(ctx);
74 APIEntryShim entryShim(exec);
76 SourceCode source = makeSource(script->ustring(), sourceURL->ustring(), startingLineNumber);
78 JSValue syntaxException;
79 bool isValidSyntax = checkSyntax(exec->dynamicGlobalObject()->globalExec(), source, &syntaxException);
83 *exception = toRef(exec, syntaxException);
90 void JSGarbageCollect(JSContextRef ctx)
92 // We used to recommend passing NULL as an argument here, which caused the only heap to be collected.
93 // As there is no longer a shared heap, the previously recommended usage became a no-op (but the GC
94 // will happen when the context group is destroyed).
95 // Because the function argument was originally ignored, some clients may pass their released context here,
96 // in which case there is a risk of crashing if another thread performs GC on the same heap in between.
100 ExecState* exec = toJS(ctx);
101 APIEntryShim entryShim(exec, false);
103 JSGlobalData& globalData = exec->globalData();
104 if (!globalData.heap.isBusy())
105 globalData.heap.collectAllGarbage();
107 // FIXME: Perhaps we should trigger a second mark and sweep
108 // once the garbage collector is done if this is called when
109 // the collector is busy.
112 void JSReportExtraMemoryCost(JSContextRef ctx, size_t size)
114 ExecState* exec = toJS(ctx);
115 APIEntryShim entryShim(exec);
116 exec->globalData().heap.reportExtraMemoryCost(size);