src/third_party/blink/Source/bindings/core/v8/V8GCForContextDispose.cpp

/*
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#include "config.h"
#include "bindings/core/v8/V8GCForContextDispose.h"

#include "bindings/core/v8/V8PerIsolateData.h"
#include "wtf/CurrentTime.h"
#include "wtf/StdLibExtras.h"
#include <v8.h>

namespace blink {

V8GCForContextDispose::V8GCForContextDispose()
    : m_pseudoIdleTimer(this, &V8GCForContextDispose::pseudoIdleTimerFired)
{
    reset();
}

void V8GCForContextDispose::notifyContextDisposed(bool isMainFrame)
{
    m_didDisposeContextForMainFrame = isMainFrame;
    m_lastContextDisposalTime = WTF::currentTime();
    V8PerIsolateData::mainThreadIsolate()->ContextDisposedNotification();
    if (m_pseudoIdleTimer.isActive())
        m_pseudoIdleTimer.stop();
}

void V8GCForContextDispose::notifyIdle()
{
    double maxTimeSinceLastContextDisposal = .2;
    if (!m_didDisposeContextForMainFrame && !m_pseudoIdleTimer.isActive() && m_lastContextDisposalTime + maxTimeSinceLastContextDisposal >= WTF::currentTime()) {
        m_pseudoIdleTimer.startOneShot(0, FROM_HERE);
    }
}

V8GCForContextDispose& V8GCForContextDispose::instance()
{
    DEFINE_STATIC_LOCAL(V8GCForContextDispose, staticInstance, ());
    return staticInstance;
}

void V8GCForContextDispose::pseudoIdleTimerFired(Timer<V8GCForContextDispose>*)
{
    V8PerIsolateData::mainThreadIsolate()->IdleNotification(0);
    reset();
}

void V8GCForContextDispose::reset()
{
    m_didDisposeContextForMainFrame = false;
    m_lastContextDisposalTime = -1;
}

} // namespace blink