/* * Copyright (C) 2016 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 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 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 "ICStats.h" namespace JSC { bool ICEvent::operator<(const ICEvent& other) const { if (m_classInfo != other.m_classInfo) { if (!m_classInfo) return true; if (!other.m_classInfo) return false; return strcmp(m_classInfo->className, other.m_classInfo->className) < 0; } if (m_propertyName != other.m_propertyName) return codePointCompare(m_propertyName.string(), other.m_propertyName.string()) < 0; if (m_kind != other.m_kind) return m_kind < other.m_kind; return m_propertyLocation < other.m_propertyLocation; } void ICEvent::dump(PrintStream& out) const { out.print(m_kind, "(", m_classInfo ? m_classInfo->className : "", ", ", m_propertyName, ")"); if (m_propertyLocation != Unknown) out.print(m_propertyLocation == BaseObject ? " self" : " proto lookup"); } void ICEvent::log() const { ICStats::instance().add(*this); } Atomic ICStats::s_instance; ICStats::ICStats() { m_thread = Thread::create( "JSC ICStats", [this] () { Locker locker { m_lock }; for (;;) { m_condition.waitFor( m_lock, Seconds(1), [this] () -> bool { return m_shouldStop; }); if (m_shouldStop) break; dataLog("ICStats:\n"); auto list = m_spectrum.buildList(); for (unsigned i = list.size(); i--;) dataLog(" ", list[i].key, ": ", list[i].count, "\n"); } }); } ICStats::~ICStats() { { Locker locker { m_lock }; m_shouldStop = true; m_condition.notifyAll(); } m_thread->waitForCompletion(); } void ICStats::add(const ICEvent& event) { m_spectrum.add(event); } ICStats& ICStats::instance() { for (;;) { ICStats* result = s_instance.load(); if (result) return *result; ICStats* newStats = new ICStats(); if (s_instance.compareExchangeWeak(nullptr, newStats)) return *newStats; delete newStats; } } } // namespace JSC namespace WTF { using namespace JSC; void printInternal(PrintStream& out, ICEvent::Kind kind) { switch (kind) { #define ICEVENT_KIND_DUMP(name) case ICEvent::name: out.print(#name); return; FOR_EACH_ICEVENT_KIND(ICEVENT_KIND_DUMP); #undef ICEVENT_KIND_DUMP } RELEASE_ASSERT_NOT_REACHED(); } } // namespace WTF