webkitgtk-2.10.2webkitgtk-2.10.2

1 files changed, 208 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/profiler/LegacyProfiler.cpp b/Source/JavaScriptCore/profiler/LegacyProfiler.cpp
new file mode 100644
index 000000000..787d362dc
--- /dev/null
+++ b/Source/JavaScriptCore/profiler/LegacyProfiler.cpp
@@ -0,0 +1,208 @@
+/*
+ * Copyright (C) 2008, 2012, 2014 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.
+ * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 "LegacyProfiler.h"
+
+#include "CallFrame.h"
+#include "CodeBlock.h"
+#include "CommonIdentifiers.h"
+#include "InternalFunction.h"
+#include "JSFunction.h"
+#include "JSGlobalObject.h"
+#include "Nodes.h"
+#include "JSCInlines.h"
+#include "Profile.h"
+#include "ProfileGenerator.h"
+#include "ProfileNode.h"
+
+namespace JSC {
+
+static const char* GlobalCodeExecution = "(program)";
+static const char* AnonymousFunction = "(anonymous function)";
+static unsigned ProfilesUID = 0;
+
+static CallIdentifier createCallIdentifierFromFunctionImp(ExecState*, JSObject*, const String& defaultSourceURL, unsigned defaultLineNumber, unsigned defaultColumnNumber);
+
+LegacyProfiler* LegacyProfiler::s_sharedLegacyProfiler = nullptr;
+
+LegacyProfiler* LegacyProfiler::profiler()
+{
+    if (!s_sharedLegacyProfiler)
+        s_sharedLegacyProfiler = new LegacyProfiler();
+    return s_sharedLegacyProfiler;
+}
+
+void LegacyProfiler::startProfiling(ExecState* exec, const String& title, PassRefPtr<Stopwatch> stopwatch)
+{
+    if (!exec)
+        return;
+
+    // Check if we currently have a Profile for this global ExecState and title.
+    // If so return early and don't create a new Profile.
+    JSGlobalObject* origin = exec->lexicalGlobalObject();
+
+    for (size_t i = 0; i < m_currentProfiles.size(); ++i) {
+        ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
+        if (profileGenerator->origin() == origin && profileGenerator->title() == title)
+            return;
+    }
+
+    exec->vm().setEnabledProfiler(this);
+    RefPtr<ProfileGenerator> profileGenerator = ProfileGenerator::create(exec, title, ++ProfilesUID, stopwatch);
+    m_currentProfiles.append(profileGenerator);
+}
+
+RefPtr<Profile> LegacyProfiler::stopProfiling(ExecState* exec, const String& title)
+{
+    if (!exec)
+        return nullptr;
+
+    JSGlobalObject* origin = exec->lexicalGlobalObject();
+    for (ptrdiff_t i = m_currentProfiles.size() - 1; i >= 0; --i) {
+        ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
+        if (profileGenerator->origin() == origin && (title.isNull() || profileGenerator->title() == title)) {
+            profileGenerator->stopProfiling();
+            RefPtr<Profile> returnProfile = profileGenerator->profile();
+
+            m_currentProfiles.remove(i);
+            if (!m_currentProfiles.size())
+                exec->vm().setEnabledProfiler(nullptr);
+
+            return returnProfile;
+        }
+    }
+
+    return nullptr;
+}
+
+void LegacyProfiler::stopProfiling(JSGlobalObject* origin)
+{
+    for (ptrdiff_t i = m_currentProfiles.size() - 1; i >= 0; --i) {
+        ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
+        if (profileGenerator->origin() == origin) {
+            profileGenerator->stopProfiling();
+            m_currentProfiles.remove(i);
+            if (!m_currentProfiles.size())
+                origin->vm().setEnabledProfiler(nullptr);
+        }
+    }
+}
+
+static inline void callFunctionForProfilesWithGroup(std::function<void(ProfileGenerator*)> callback, const Vector<RefPtr<ProfileGenerator>>& profiles, unsigned targetProfileGroup)
+{
+    for (const RefPtr<ProfileGenerator>& profile : profiles) {
+        if (profile->profileGroup() == targetProfileGroup || !profile->origin())
+            callback(profile.get());
+    }
+}
+
+void LegacyProfiler::suspendProfiling(JSC::ExecState* exec)
+{
+    if (!exec)
+        return;
+
+    callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::setIsSuspended, std::placeholders::_1, true), m_currentProfiles, exec->lexicalGlobalObject()->profileGroup());
+}
+
+void LegacyProfiler::unsuspendProfiling(JSC::ExecState* exec)
+{
+    if (!exec)
+        return;
+
+    callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::setIsSuspended, std::placeholders::_1, false), m_currentProfiles, exec->lexicalGlobalObject()->profileGroup());
+}
+
+void LegacyProfiler::willExecute(ExecState* callerCallFrame, JSValue function)
+{
+    ASSERT(!m_currentProfiles.isEmpty());
+
+    CallIdentifier callIdentifier = createCallIdentifier(callerCallFrame, function, StringImpl::empty(), 0, 0);
+
+    callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::willExecute, std::placeholders::_1, callerCallFrame, callIdentifier), m_currentProfiles, callerCallFrame->lexicalGlobalObject()->profileGroup());
+}
+
+void LegacyProfiler::willExecute(ExecState* callerCallFrame, const String& sourceURL, unsigned startingLineNumber, unsigned startingColumnNumber)
+{
+    ASSERT(!m_currentProfiles.isEmpty());
+
+    CallIdentifier callIdentifier = createCallIdentifier(callerCallFrame, JSValue(), sourceURL, startingLineNumber, startingColumnNumber);
+
+    callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::willExecute, std::placeholders::_1, callerCallFrame, callIdentifier), m_currentProfiles, callerCallFrame->lexicalGlobalObject()->profileGroup());
+}
+
+void LegacyProfiler::didExecute(ExecState* callerCallFrame, JSValue function)
+{
+    ASSERT(!m_currentProfiles.isEmpty());
+
+    CallIdentifier callIdentifier = createCallIdentifier(callerCallFrame, function, StringImpl::empty(), 0, 0);
+
+    callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::didExecute, std::placeholders::_1, callerCallFrame, callIdentifier), m_currentProfiles, callerCallFrame->lexicalGlobalObject()->profileGroup());
+}
+
+void LegacyProfiler::didExecute(ExecState* callerCallFrame, const String& sourceURL, unsigned startingLineNumber, unsigned startingColumnNumber)
+{
+    ASSERT(!m_currentProfiles.isEmpty());
+
+    CallIdentifier callIdentifier = createCallIdentifier(callerCallFrame, JSValue(), sourceURL, startingLineNumber, startingColumnNumber);
+
+    callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::didExecute, std::placeholders::_1, callerCallFrame, callIdentifier), m_currentProfiles, callerCallFrame->lexicalGlobalObject()->profileGroup());
+}
+
+void LegacyProfiler::exceptionUnwind(ExecState* handlerCallFrame)
+{
+    ASSERT(!m_currentProfiles.isEmpty());
+
+    CallIdentifier callIdentifier = createCallIdentifier(handlerCallFrame, JSValue(), StringImpl::empty(), 0, 0);
+
+    callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::exceptionUnwind, std::placeholders::_1, handlerCallFrame, callIdentifier), m_currentProfiles, handlerCallFrame->lexicalGlobalObject()->profileGroup());
+}
+
+CallIdentifier LegacyProfiler::createCallIdentifier(ExecState* exec, JSValue functionValue, const String& defaultSourceURL, unsigned defaultLineNumber, unsigned defaultColumnNumber)
+{
+    if (!functionValue)
+        return CallIdentifier(ASCIILiteral(GlobalCodeExecution), defaultSourceURL, defaultLineNumber, defaultColumnNumber);
+    if (!functionValue.isObject())
+        return CallIdentifier(ASCIILiteral("(unknown)"), defaultSourceURL, defaultLineNumber, defaultColumnNumber);
+    if (asObject(functionValue)->inherits(JSFunction::info()) || asObject(functionValue)->inherits(InternalFunction::info()))
+        return createCallIdentifierFromFunctionImp(exec, asObject(functionValue), defaultSourceURL, defaultLineNumber, defaultColumnNumber);
+    if (asObject(functionValue)->inherits(JSCallee::info()))
+        return CallIdentifier(ASCIILiteral(GlobalCodeExecution), defaultSourceURL, defaultLineNumber, defaultColumnNumber);
+    return CallIdentifier(asObject(functionValue)->methodTable()->className(asObject(functionValue)), defaultSourceURL, defaultLineNumber, defaultColumnNumber);
+}
+
+CallIdentifier createCallIdentifierFromFunctionImp(ExecState* exec, JSObject* function, const String& defaultSourceURL, unsigned defaultLineNumber, unsigned defaultColumnNumber)
+{
+    const String& name = getCalculatedDisplayName(exec, function);
+    JSFunction* jsFunction = jsDynamicCast<JSFunction*>(function);
+    if (jsFunction && !jsFunction->isHostOrBuiltinFunction())
+        return CallIdentifier(name.isEmpty() ? ASCIILiteral(AnonymousFunction) : name, jsFunction->jsExecutable()->sourceURL(), jsFunction->jsExecutable()->firstLine(), jsFunction->jsExecutable()->startColumn());
+    return CallIdentifier(name.isEmpty() ? ASCIILiteral(AnonymousFunction) : name, defaultSourceURL, defaultLineNumber, defaultColumnNumber);
+}
+
+} // namespace JSC