/* * Copyright (C) 2012, 2013, 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. * * 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 "Watchpoint.h" #include <wtf/CompilationThread.h> #include <wtf/PassRefPtr.h> namespace JSC { void StringFireDetail::dump(PrintStream& out) const { out.print(m_string); } Watchpoint::~Watchpoint() { if (isOnList()) remove(); } WatchpointSet::WatchpointSet(WatchpointState state) : m_state(state) , m_setIsNotEmpty(false) { } WatchpointSet::~WatchpointSet() { // Remove all watchpoints, so that they don't try to remove themselves. Note that we // don't fire watchpoints on deletion. We assume that any code that is interested in // watchpoints already also separately has a mechanism to make sure that the code is // either keeping the watchpoint set's owner alive, or does some weak reference thing. while (!m_set.isEmpty()) m_set.begin()->remove(); } void WatchpointSet::add(Watchpoint* watchpoint) { ASSERT(!isCompilationThread()); ASSERT(state() != IsInvalidated); if (!watchpoint) return; m_set.push(watchpoint); m_setIsNotEmpty = true; m_state = IsWatched; } void WatchpointSet::fireAllSlow(const FireDetail& detail) { ASSERT(state() == IsWatched); WTF::storeStoreFence(); fireAllWatchpoints(detail); m_state = IsInvalidated; WTF::storeStoreFence(); } void WatchpointSet::fireAllSlow(const char* reason) { fireAllSlow(StringFireDetail(reason)); } void WatchpointSet::fireAllWatchpoints(const FireDetail& detail) { while (!m_set.isEmpty()) m_set.begin()->fire(detail); } void InlineWatchpointSet::add(Watchpoint* watchpoint) { inflate()->add(watchpoint); } void InlineWatchpointSet::fireAll(const char* reason) { fireAll(StringFireDetail(reason)); } WatchpointSet* InlineWatchpointSet::inflateSlow() { ASSERT(isThin()); ASSERT(!isCompilationThread()); WatchpointSet* fat = adoptRef(new WatchpointSet(decodeState(m_data))).leakRef(); WTF::storeStoreFence(); m_data = bitwise_cast<uintptr_t>(fat); return fat; } void InlineWatchpointSet::freeFat() { ASSERT(isFat()); fat()->deref(); } } // namespace JSC