IDBActiveDOMObject.h [plain text]
#pragma once
#include "ActiveDOMObject.h"
#include "ScriptExecutionContext.h"
#include <wtf/Threading.h>
#if ENABLE(INDEXED_DATABASE)
namespace WebCore {
class IDBActiveDOMObject : public ActiveDOMObject {
public:
ThreadIdentifier originThreadID() const { return m_originThreadID; }
void contextDestroyed() final {
ASSERT(currentThread() == m_originThreadID);
Locker<Lock> lock(m_scriptExecutionContextLock);
ActiveDOMObject::contextDestroyed();
}
template<typename T, typename... Parameters, typename... Arguments>
void performCallbackOnOriginThread(T& object, void (T::*method)(Parameters...), Arguments&&... arguments)
{
ASSERT(originThreadID() == object.originThreadID());
if (object.originThreadID() == currentThread()) {
(object.*method)(arguments...);
return;
}
Locker<Lock> lock(m_scriptExecutionContextLock);
ScriptExecutionContext* context = scriptExecutionContext();
if (!context)
return;
context->postCrossThreadTask(object, method, arguments...);
}
void callFunctionOnOriginThread(WTF::Function<void ()>&& function)
{
if (originThreadID() == currentThread()) {
function();
return;
}
Locker<Lock> lock(m_scriptExecutionContextLock);
ScriptExecutionContext* context = scriptExecutionContext();
if (!context)
return;
context->postTask(WTFMove(function));
}
protected:
IDBActiveDOMObject(ScriptExecutionContext* context)
: ActiveDOMObject(context)
{
ASSERT(context);
}
private:
ThreadIdentifier m_originThreadID { currentThread() };
Lock m_scriptExecutionContextLock;
};
}
#endif // ENABLE(INDEXED_DATABASE)