Changeset 47236 in webkit for trunk/JavaScriptCore/debugger/Debugger.cpp

Timestamp:

Aug 13, 2009, 2:51:50 PM (16 years ago)

Author:

Darin Adler

Message:

JavaScriptCore: JavaScriptCore tweaks to get ready for the parser arena
​https://bugs.webkit.org/show_bug.cgi?id=28243

Patch by Darin Adler <Darin Adler> on 2009-08-13
Reviewed by David Levin.

Eliminate dependencies on Nodes.h outside JavaScriptCore,
and cut down on them inside JavaScriptCore.

Change regular expression parsing to use identifiers as
with other strings we parse.

Fix a couple things that are needed to use const Identifier
more, which will be part of the parser arena work.

• JavaScriptCore.exp: Resorted and updated.

• JavaScriptCore.xcodeproj/project.pbxproj: Changed

CollectorHeapIterator.h to be project-internal.

• bytecompiler/BytecodeGenerator.cpp:

(JSC::BytecodeGenerator::emitPushNewScope): Added const.

• bytecompiler/BytecodeGenerator.h: Ditto.

• debugger/Debugger.cpp:

(JSC::Debugger::recompileAllJSFunctions): Moved this function
here from WebCore. Here is better since it uses so many internals.
Removed unimportant optimization for the no listener case.

• debugger/Debugger.h: Ditto. Also removed unneeded include

and tweaked formatting and comments.

• debugger/DebuggerCallFrame.cpp:

(JSC::DebuggerCallFrame::functionName): Call asFunction instead
of doing the unchecked static_cast.
(JSC::DebuggerCallFrame::calculatedFunctionName): Ditto.

• jit/JITStubs.cpp:

(JSC::op_call_JSFunction): Call isHostFunction on the body rather
than on the JSFunction.
(JSC::vm_lazyLinkCall): Ditto.
(JSC::op_construct_JSConstruct): Ditto.

• parser/Grammar.y: Changed callers to use new scanRegExp with

out arguments instead of relying on state in the Lexer. And
callers that just want to skip a regular expression to use
skipRegExp.

• parser/Lexer.cpp:

(JSC::Lexer::scanRegExp): Changed to use out arguments, and to
add a prefix argument so we can add in the "=" character as needed.
Also rewrote to streamline the logic a bit inspired by suggestions
by David Levin.
(JSC::Lexer::skipRegExp): Added. Version of the function above that
does not actually put the regular expression into a string.
(JSC::Lexer::clear): Removed code to clear m_pattern and m_flags.

• parser/Lexer.h: Changed scanRegExp to have out arguments. Added

skipRegExp. Eliminated pattern, flags, m_pattern, and m_flags.

• parser/NodeConstructors.h:

(JSC::RegExpNode::RegExpNode): Changed to take const Identifier&.

• parser/Nodes.cpp:

(JSC::RegExpNode::emitBytecode): Changed since m_pattern and
m_flags are now Identifier instead of UString.
(JSC::FunctionBodyNode::make): Moved this function here instead
of putting it in the JSFunction.h header.

• parser/Nodes.h: Changed RegExpNode to use Identifier.

• profiler/Profiler.cpp:

(JSC::Profiler::createCallIdentifier): Changed to use isHostFunction
on the body instead of on the JSFunction object.

• runtime/FunctionPrototype.cpp:

(JSC::functionProtoFuncToString): Ditto.

• runtime/JSFunction.cpp:

(JSC::JSFunction::isHostFunction): Moved here from header.
(JSC::JSFunction::isHostFunctionNonInline): Added.
(JSC::JSFunction::JSFunction): Removed unneeded initialization of
m_body to 0.
(JSC::JSFunction::setBody): Moved here from header.

• runtime/JSFunction.h: Removed unneeded includes. Moved private

constructor down to the private section. Made virtual functions
private. Removed unneeded overload of setBody and moved the body
of the function into the .cpp file. Changed assertions to use
the non-inline version of isHostFunction.

• runtime/PropertySlot.cpp:

(JSC::PropertySlot::functionGetter): Use asFunction instead
of doing the unchecked static_cast.

• wtf/SegmentedVector.h:

(WTF::SegmentedVector::isEmpty): Added.

WebCore: JavaScriptCore tweaks to get ready for the parser arena
​https://bugs.webkit.org/show_bug.cgi?id=28243

Patch by Darin Adler <Darin Adler> on 2009-08-13
Reviewed by David Levin.

• ForwardingHeaders/runtime/CollectorHeapIterator.h: Removed.

• WebCore.xcodeproj/project.pbxproj: Exposed a couple header

files as Private that are now needed to compile Mac WebKit.

• bindings/js/JSAudioConstructor.cpp:
• bindings/js/JSDOMBinding.cpp:
• bindings/js/JSDOMBinding.h:
• bindings/js/JSDOMWindowCustom.cpp:
• bindings/js/JSHTMLInputElementCustom.cpp:
• bindings/js/JSHistoryCustom.cpp:
• bindings/js/JSImageConstructor.cpp:
• bindings/js/JSLazyEventListener.cpp:
• bindings/js/JSLocationCustom.cpp:
• bindings/js/JSMessageChannelConstructor.cpp:
• bindings/js/JSOptionConstructor.cpp:
• bindings/js/JSWebSocketConstructor.cpp:
• bindings/js/JSWebSocketCustom.cpp:
• bindings/js/JSWorkerConstructor.cpp:
• bindings/js/JSXMLHttpRequestConstructor.cpp:
• bridge/jni/jni_jsobject.mm:

Updated includes.

• inspector/JavaScriptDebugServer.cpp:

(WebCore::JavaScriptDebugServer::sourceParsed):
Change to not assert if this is called with no listeners.
I don't think this was guaranteed before, and we now use
this code path when recompiling. Slightly less efficient,
but this is a one-time cost when turning on the debugger.
(WebCore::JavaScriptDebugServer::recompileAllJSFunctions):
Change to call Debugger::recompileAllJSFunctions.

WebKit/mac: * Plugins/Hosted/NetscapePluginInstanceProxy.mm: Updated includes.

• WebView/WebScriptDebugger.mm: Ditto.

File:

• trunk/JavaScriptCore/debugger/Debugger.cpp (modified) (2 diffs)

trunk/JavaScriptCore/debugger/Debugger.cpp

@@ -23 +23 @@
 #include "Debugger.h"
 
+#include "CollectorHeapIterator.h"
+#include "Interpreter.h"
 #include "JSGlobalObject.h"
-#include "Interpreter.h"
 #include "Parser.h"
 
 namespace JSC {
-
-Debugger::Debugger()
-{
-}
 
 Debugger::~Debugger()
@@ -54 +51 @@
 }
 
+void Debugger::recompileAllJSFunctions(JSGlobalData* globalData)
+{
+    // If JavaScript is running, it's not safe to recompile, since we'll end
+    // up throwing away code that is live on the stack.
+    ASSERT(!globalData->dynamicGlobalObject);
+    if (globalData->dynamicGlobalObject)
+        return;
+
+    Vector<ProtectedPtr<JSFunction> > functions;
+    Heap::iterator heapEnd = globalData->heap.primaryHeapEnd();
+    for (Heap::iterator it = globalData->heap.primaryHeapBegin(); it != heapEnd; ++it) {
+        if ((*it)->isObject(&JSFunction::info)) {
+            JSFunction* function = asFunction(*it);
+            if (!function->body()->isHostFunction())
+                functions.append(function);
+        }
+    }
+
+    typedef HashMap<RefPtr<FunctionBodyNode>, RefPtr<FunctionBodyNode> > FunctionBodyMap;
+    typedef HashMap<SourceProvider*, ExecState*> SourceProviderMap;
+
+    FunctionBodyMap functionBodies;
+    SourceProviderMap sourceProviders;
+
+    size_t size = functions.size();
+    for (size_t i = 0; i < size; ++i) {
+        JSFunction* function = functions[i];
+
+        FunctionBodyNode* oldBody = function->body();
+        pair<FunctionBodyMap::iterator, bool> result = functionBodies.add(oldBody, 0);
+        if (!result.second) {
+            function->setBody(result.first->second);
+            continue;
+        }
+
+        ExecState* exec = function->scope().globalObject()->JSGlobalObject::globalExec();
+        const SourceCode& sourceCode = oldBody->source();
+
+        RefPtr<FunctionBodyNode> newBody = globalData->parser->parse<FunctionBodyNode>(exec, 0, sourceCode);
+        ASSERT(newBody);
+        newBody->finishParsing(oldBody->copyParameters(), oldBody->parameterCount(), oldBody->ident());
+
+        result.first->second = newBody;
+        function->setBody(newBody.release());
+
+        if (function->scope().globalObject()->debugger() == this)
+            sourceProviders.add(sourceCode.provider(), exec);
+    }
+
+    // Call sourceParsed() after reparsing all functions because it will execute
+    // JavaScript in the inspector.
+    SourceProviderMap::const_iterator end = sourceProviders.end();
+    for (SourceProviderMap::const_iterator iter = sourceProviders.begin(); iter != end; ++iter)
+        sourceParsed(iter->second, SourceCode(iter->first), -1, 0);
+}
+
 JSValue evaluateInGlobalCallFrame(const UString& script, JSValue& exception, JSGlobalObject* globalObject)
 {