#include "config.h"
#include "runtime_root.h"
#include "BridgeJSC.h"
#include "runtime_object.h"
#include <heap/StrongInlines.h>
#include <heap/Weak.h>
#include <heap/WeakInlines.h>
#include <runtime/JSGlobalObject.h>
#include <wtf/HashSet.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/Ref.h>
#include <wtf/StdLibExtras.h>
namespace JSC { namespace Bindings {
typedef HashSet<RootObject*> RootObjectSet;
static RootObjectSet& rootObjectSet()
{
static NeverDestroyed<RootObjectSet> staticRootObjectSet;
return staticRootObjectSet;
}
RootObject* findProtectingRootObject(JSObject* jsObject)
{
RootObjectSet::const_iterator end = rootObjectSet().end();
for (RootObjectSet::const_iterator it = rootObjectSet().begin(); it != end; ++it) {
if ((*it)->gcIsProtected(jsObject))
return *it;
}
return 0;
}
RootObject* findRootObject(JSGlobalObject* globalObject)
{
RootObjectSet::const_iterator end = rootObjectSet().end();
for (RootObjectSet::const_iterator it = rootObjectSet().begin(); it != end; ++it) {
if ((*it)->globalObject() == globalObject)
return *it;
}
return 0;
}
RootObject::InvalidationCallback::~InvalidationCallback()
{
}
Ref<RootObject> RootObject::create(const void* nativeHandle, JSGlobalObject* globalObject)
{
return adoptRef(*new RootObject(nativeHandle, globalObject));
}
RootObject::RootObject(const void* nativeHandle, JSGlobalObject* globalObject)
: m_isValid(true)
, m_nativeHandle(nativeHandle)
, m_globalObject(globalObject->vm(), globalObject)
{
ASSERT(globalObject);
rootObjectSet().add(this);
}
RootObject::~RootObject()
{
if (m_isValid)
invalidate();
}
void RootObject::invalidate()
{
if (!m_isValid)
return;
{
for (RuntimeObject* runtimeObject : m_runtimeObjects.keys())
runtimeObject->invalidate();
m_runtimeObjects.clear();
}
m_isValid = false;
m_nativeHandle = 0;
m_globalObject.clear();
{
HashSet<InvalidationCallback*>::iterator end = m_invalidationCallbacks.end();
for (HashSet<InvalidationCallback*>::iterator iter = m_invalidationCallbacks.begin(); iter != end; ++iter)
(**iter)(this);
m_invalidationCallbacks.clear();
}
ProtectCountSet::iterator end = m_protectCountSet.end();
for (ProtectCountSet::iterator it = m_protectCountSet.begin(); it != end; ++it)
JSC::gcUnprotect(it->key);
m_protectCountSet.clear();
rootObjectSet().remove(this);
}
void RootObject::gcProtect(JSObject* jsObject)
{
ASSERT(m_isValid);
if (!m_protectCountSet.contains(jsObject)) {
JSC::JSLockHolder holder(&globalObject()->vm());
JSC::gcProtect(jsObject);
}
m_protectCountSet.add(jsObject);
}
void RootObject::gcUnprotect(JSObject* jsObject)
{
ASSERT(m_isValid);
if (!jsObject)
return;
if (m_protectCountSet.count(jsObject) == 1) {
JSC::JSLockHolder holder(&globalObject()->vm());
JSC::gcUnprotect(jsObject);
}
m_protectCountSet.remove(jsObject);
}
bool RootObject::gcIsProtected(JSObject* jsObject)
{
ASSERT(m_isValid);
return m_protectCountSet.contains(jsObject);
}
const void* RootObject::nativeHandle() const
{
ASSERT(m_isValid);
return m_nativeHandle;
}
JSGlobalObject* RootObject::globalObject() const
{
ASSERT(m_isValid);
return m_globalObject.get();
}
void RootObject::updateGlobalObject(JSGlobalObject* globalObject)
{
m_globalObject.set(globalObject->vm(), globalObject);
}
void RootObject::addRuntimeObject(VM&, RuntimeObject* object)
{
ASSERT(m_isValid);
weakAdd(m_runtimeObjects, object, JSC::Weak<RuntimeObject>(object, this));
}
void RootObject::removeRuntimeObject(RuntimeObject* object)
{
if (!m_isValid)
return;
weakRemove(m_runtimeObjects, object, object);
}
void RootObject::finalize(JSC::Handle<JSC::Unknown> handle, void*)
{
RuntimeObject* object = static_cast<RuntimeObject*>(handle.slot()->asCell());
Ref<RootObject> protectedThis(*this);
object->invalidate();
weakRemove(m_runtimeObjects, object, object);
}
} }