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**
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** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
**
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** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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#include "debugeventcallbackbase.h"
#include "coreengine.h"

namespace CdbCore {

// DebugEventCallbackBase
DebugEventCallbackBase::DebugEventCallbackBase()
{
}

DebugEventCallbackBase::~DebugEventCallbackBase()
{
}

STDMETHODIMP DebugEventCallbackBase::QueryInterface(
    THIS_
    IN REFIID InterfaceId,
    OUT PVOID* Interface)
{
    *Interface = NULL;

    if (IsEqualIID(InterfaceId, __uuidof(IUnknown)) ||
        IsEqualIID(InterfaceId, __uuidof(IDebugOutputCallbacks)))  {
        *Interface = (IDebugOutputCallbacks *)this;
        AddRef();
        return S_OK;
    } else {
        return E_NOINTERFACE;
    }
}

STDMETHODIMP_(ULONG) DebugEventCallbackBase::AddRef(THIS)
{
    // This class is designed to be static so
    // there's no true refcount.
    return 1;
}

STDMETHODIMP_(ULONG) DebugEventCallbackBase::Release(THIS)
{
    // This class is designed to be static so
    // there's no true refcount.
    return 0;
}

STDMETHODIMP DebugEventCallbackBase::Breakpoint(THIS_ __in PDEBUG_BREAKPOINT2)
{
    return S_OK;
}
STDMETHODIMP DebugEventCallbackBase::Exception(
    THIS_
    __in PEXCEPTION_RECORD64,
    __in ULONG /* FirstChance */
    )
{
    return S_OK;
}

STDMETHODIMP DebugEventCallbackBase::CreateThread(
    THIS_
    __in ULONG64 /* Handle */,
    __in ULONG64 /* DataOffset */,
    __in ULONG64 /* StartOffset */
    )
{
    return S_OK;
}

STDMETHODIMP DebugEventCallbackBase::ExitThread(
    THIS_
    __in ULONG /* ExitCode */
    )
{
    return S_OK;
}

STDMETHODIMP DebugEventCallbackBase::CreateProcess(
    THIS_
    __in ULONG64 /* ImageFileHandle */,
    __in ULONG64 /* Handle */,
    __in ULONG64 /* BaseOffset */,
    __in ULONG /* ModuleSize */,
    __in_opt PCWSTR /* ModuleName */,
    __in_opt PCWSTR /* ImageName */,
    __in ULONG /* CheckSum */,
    __in ULONG /* TimeDateStamp */,
    __in ULONG64 /* InitialThreadHandle */,
    __in ULONG64 /* ThreadDataOffset */,
    __in ULONG64 /* StartOffset */
    )
{
    return S_OK;
}

STDMETHODIMP DebugEventCallbackBase::ExitProcess(
    THIS_
    __in ULONG /* ExitCode */
    )
{
    return S_OK;
}

STDMETHODIMP DebugEventCallbackBase::LoadModule(
    THIS_
    __in ULONG64 /* ImageFileHandle */,
    __in ULONG64 /* BaseOffset */,
    __in ULONG /* ModuleSize */,
    __in_opt PCWSTR /* ModuleName */,
    __in_opt PCWSTR /* ImageName */,
    __in ULONG /* CheckSum */,
    __in ULONG /* TimeDateStamp */
    )
{
    handleModuleLoad();
    return S_OK;
}

STDMETHODIMP DebugEventCallbackBase::UnloadModule(
    THIS_
    __in_opt PCWSTR /* ImageBaseName */,
    __in ULONG64 /* BaseOffset */
    )
{
    handleModuleUnload();
    return S_OK;
}

STDMETHODIMP DebugEventCallbackBase::SystemError(
    THIS_
    __in ULONG /* Error */,
    __in ULONG /* Level */
    )
{
    return S_OK;
}

STDMETHODIMP DebugEventCallbackBase::SessionStatus(
    THIS_
    __in ULONG /* Status */
    )
{
    return S_OK;
}

STDMETHODIMP DebugEventCallbackBase::ChangeDebuggeeState(
    THIS_
    __in ULONG /* Flags */,
    __in ULONG64 /* Argument */
    )
{
    return S_OK;
}

STDMETHODIMP DebugEventCallbackBase::ChangeEngineState(
    THIS_
    __in ULONG /* Flags */,
    __in ULONG64 /* Argument */
    )
{
    return S_OK;
}

STDMETHODIMP DebugEventCallbackBase::ChangeSymbolState(
    THIS_
    __in ULONG /* Flags */,
    __in ULONG64 /* Argument */
    )
{
    return S_OK;
}

IDebugEventCallbacksWide *DebugEventCallbackBase::getEventCallback(CIDebugClient *clnt)
{
    IDebugEventCallbacksWide *rc = 0;
    if (SUCCEEDED(clnt->GetEventCallbacksWide(&rc)))
        return rc;
    return 0;
}

void DebugEventCallbackBase::handleModuleLoad()
{
    m_moduleCount++;
}

void DebugEventCallbackBase::handleModuleUnload()
{
    m_moduleCount--;
}

unsigned DebugEventCallbackBase::moduleCount() const
{
    return m_moduleCount;
}

void DebugEventCallbackBase::setModuleCount(unsigned m)
{
    m_moduleCount = m;
}

ULONG DebugEventCallbackBase::baseInterestMask() const
{
    return DEBUG_EVENT_LOAD_MODULE | DEBUG_EVENT_UNLOAD_MODULE;
}

// ----------- EventCallbackRedirector

EventCallbackRedirector::EventCallbackRedirector(CoreEngine *engine,
                                                 const DebugEventCallbackBasePtr &cb) :
    m_engine(engine),
    m_oldCallback(engine->setDebugEventCallback(cb))
{
}

EventCallbackRedirector::~EventCallbackRedirector()
{
    m_engine->setDebugEventCallback(m_oldCallback);
}


} // namespace CdbCore