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| -rw-r--r-- | include/VBox/com/microatl.h | 1375 |
1 files changed, 1375 insertions, 0 deletions
diff --git a/include/VBox/com/microatl.h b/include/VBox/com/microatl.h new file mode 100644 index 00000000..f979d332 --- /dev/null +++ b/include/VBox/com/microatl.h @@ -0,0 +1,1375 @@ +/** @file + * ATL lookalike, just the tiny subset we actually need. + */ + +/* + * Copyright (C) 2016-2020 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + */ + +#ifndef VBOX_INCLUDED_com_microatl_h +#define VBOX_INCLUDED_com_microatl_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <VBox/cdefs.h> /* VBOX_STRICT */ +#include <iprt/assert.h> +#include <iprt/critsect.h> +#include <iprt/errcore.h> /* RT_FAILURE() */ + +#include <iprt/win/windows.h> + +#include <new> + + +namespace ATL +{ + +#define ATL_NO_VTABLE __declspec(novtable) + +class CAtlModule; +__declspec(selectany) CAtlModule *_pAtlModule = NULL; + +class CComModule; +__declspec(selectany) CComModule *_pModule = NULL; + +typedef HRESULT (WINAPI FNCREATEINSTANCE)(void *pv, REFIID riid, void **ppv); +typedef FNCREATEINSTANCE *PFNCREATEINSTANCE; +typedef HRESULT (WINAPI FNINTERFACEMAPHELPER)(void *pv, REFIID riid, void **ppv, DWORD_PTR dw); +typedef FNINTERFACEMAPHELPER *PFNINTERFACEMAPHELPER; +typedef void (__stdcall FNATLTERMFUNC)(void *pv); +typedef FNATLTERMFUNC *PFNATLTERMFUNC; + +struct _ATL_TERMFUNC_ELEM +{ + PFNATLTERMFUNC pfn; + void *pv; + _ATL_TERMFUNC_ELEM *pNext; +}; + +struct _ATL_INTMAP_ENTRY +{ + const IID *piid; // interface ID + DWORD_PTR dw; + PFNINTERFACEMAPHELPER pFunc; // NULL: end of array, 1: offset based map entry, other: function pointer +}; + +#define COM_SIMPLEMAPENTRY ((ATL::PFNINTERFACEMAPHELPER)1) + +#define DECLARE_CLASSFACTORY_EX(c) typedef ATL::CComCreator<ATL::CComObjectNoLock<c> > _ClassFactoryCreatorClass; +#define DECLARE_CLASSFACTORY() DECLARE_CLASSFACTORY_EX(ATL::CComClassFactory) +#define DECLARE_CLASSFACTORY_SINGLETON(o) DECLARE_CLASSFACTORY_EX(ATL::CComClassFactorySingleton<o>) +#define DECLARE_AGGREGATABLE(c) \ +public: \ + typedef ATL::CComCreator2<ATL::CComCreator<ATL::CComObject<c> >, ATL::CComCreator<ATL::CComAggObject<c> > > _CreatorClass; +#define DECLARE_NOT_AGGREGATABLE(c) \ +public: \ + typedef ATL::CComCreator2<ATL::CComCreator<ATL::CComObject<c> >, ATL::CComFailCreator<CLASS_E_NOAGGREGATION> > _CreatorClass; + +#define DECLARE_PROTECT_FINAL_CONSTRUCT() \ + void InternalFinalConstructAddRef() \ + { \ + InternalAddRef(); \ + } \ + void InternalFinalConstructRelease() \ + { \ + InternalRelease(); \ + } + +#define BEGIN_COM_MAP(c) \ +public: \ + typedef c _ComClass; \ + HRESULT _InternalQueryInterface(REFIID iid, void **ppvObj) throw() \ + { \ + return InternalQueryInterface(this, _GetEntries(), iid, ppvObj); \ + } \ + const static ATL::_ATL_INTMAP_ENTRY *WINAPI _GetEntries() throw() \ + { \ + static const ATL::_ATL_INTMAP_ENTRY _aInterfaces[] = \ + { + +#define COM_INTERFACE_ENTRY(c) \ + { &__uuidof(c), (DWORD_PTR)(static_cast<c *>((_ComClass *)8))-8, COM_SIMPLEMAPENTRY }, + +#define COM_INTERFACE_ENTRY2(c, c2) \ + { &__uuidof(c), (DWORD_PTR)(static_cast<c *>(static_cast<c2 *>((_ComClass *)8)))-8, COM_SIMPLEMAPENTRY }, + +#define COM_INTERFACE_ENTRY_AGGREGATE(iid, pUnk) \ + { &iid, (DWORD_PTR)RT_UOFFSETOF(_ComClass, pUnk), _Delegate}, + +#define END_COM_MAP() \ + { NULL, 0, NULL} \ + }; \ + return _aInterfaces; \ + } \ + virtual ULONG STDMETHODCALLTYPE AddRef(void) throw() = 0; \ + virtual ULONG STDMETHODCALLTYPE Release(void) throw() = 0; \ + STDMETHOD(QueryInterface)(REFIID, void **) throw() = 0; + +struct _ATL_OBJMAP_ENTRY +{ + const CLSID *pclsid; + PFNCREATEINSTANCE pfnGetClassObject; + PFNCREATEINSTANCE pfnCreateInstance; + IUnknown *pCF; + DWORD dwRegister; +}; + +#define BEGIN_OBJECT_MAP(o) static ATL::_ATL_OBJMAP_ENTRY o[] = { +#define END_OBJECT_MAP() {NULL, NULL, NULL, NULL, 0}}; +#define OBJECT_ENTRY(clsid, c) {&clsid, c::_ClassFactoryCreatorClass::CreateInstance, c::_CreatorClass::CreateInstance, NULL, 0 }, + + +class CComCriticalSection +{ +public: + CComCriticalSection() throw() + { + memset(&m_CritSect, 0, sizeof(m_CritSect)); + } + ~CComCriticalSection() + { + } + HRESULT Lock() throw() + { + RTCritSectEnter(&m_CritSect); + return S_OK; + } + HRESULT Unlock() throw() + { + RTCritSectLeave(&m_CritSect); + return S_OK; + } + HRESULT Init() throw() + { + HRESULT hrc = S_OK; + if (RT_FAILURE(RTCritSectInit(&m_CritSect))) + hrc = E_FAIL; + return hrc; + } + + HRESULT Term() throw() + { + RTCritSectDelete(&m_CritSect); + return S_OK; + } + + RTCRITSECT m_CritSect; +}; + +template <class TLock> class CComCritSectLock +{ +public: + CComCritSectLock(CComCriticalSection &cs, bool fInitialLock = true) : + m_cs(cs), + m_fLocked(false) + { + if (fInitialLock) + { + HRESULT hrc = Lock(); + if (FAILED(hrc)) + throw hrc; + } + } + + ~CComCritSectLock() throw() + { + if (m_fLocked) + Unlock(); + } + + HRESULT Lock() + { + Assert(!m_fLocked); + HRESULT hrc = m_cs.Lock(); + if (FAILED(hrc)) + return hrc; + m_fLocked = true; + return S_OK; + } + + void Unlock() throw() + { + Assert(m_fLocked); + m_cs.Unlock(); + m_fLocked = false; + } + + +private: + TLock &m_cs; + bool m_fLocked; + + CComCritSectLock(const CComCritSectLock&) throw(); // Do not call. + CComCritSectLock &operator=(const CComCritSectLock &) throw(); // Do not call. +}; + +class CComFakeCriticalSection +{ +public: + HRESULT Lock() throw() + { + return S_OK; + } + HRESULT Unlock() throw() + { + return S_OK; + } + HRESULT Init() throw() + { + return S_OK; + } + HRESULT Term() throw() + { + return S_OK; + } +}; + +class CComAutoCriticalSection : public CComCriticalSection +{ +public: + CComAutoCriticalSection() + { + HRESULT hrc = CComCriticalSection::Init(); + if (FAILED(hrc)) + throw hrc; + } + ~CComAutoCriticalSection() throw() + { + CComCriticalSection::Term(); + } +private : + HRESULT Init() throw(); // Do not call. + HRESULT Term() throw(); // Do not call. +}; + +class CComAutoDeleteCriticalSection : public CComCriticalSection +{ +public: + CComAutoDeleteCriticalSection(): m_fInit(false) + { + } + + ~CComAutoDeleteCriticalSection() throw() + { + if (!m_fInit) + return; + m_fInit = false; + CComCriticalSection::Term(); + } + + HRESULT Init() throw() + { + Assert(!m_fInit); + HRESULT hrc = CComCriticalSection::Init(); + if (SUCCEEDED(hrc)) + m_fInit = true; + return hrc; + } + + HRESULT Lock() + { + Assert(m_fInit); + return CComCriticalSection::Lock(); + } + + HRESULT Unlock() + { + Assert(m_fInit); + return CComCriticalSection::Unlock(); + } + +private: + HRESULT Term() throw(); + bool m_fInit; +}; + + +class CComMultiThreadModelNoCS +{ +public: + static ULONG WINAPI Increment(LONG *pL) throw() + { + return InterlockedIncrement(pL); + } + static ULONG WINAPI Decrement(LONG *pL) throw() + { + return InterlockedDecrement(pL); + } + typedef CComFakeCriticalSection AutoCriticalSection; + typedef CComFakeCriticalSection AutoDeleteCriticalSection; + typedef CComMultiThreadModelNoCS ThreadModelNoCS; +}; + +class CComMultiThreadModel +{ +public: + static ULONG WINAPI Increment(LONG *pL) throw() + { + return InterlockedIncrement(pL); + } + static ULONG WINAPI Decrement(LONG *pL) throw() + { + return InterlockedDecrement(pL); + } + typedef CComAutoCriticalSection AutoCriticalSection; + typedef CComAutoDeleteCriticalSection AutoDeleteCriticalSection; + typedef CComMultiThreadModelNoCS ThreadModelNoCS; +}; + +class ATL_NO_VTABLE CAtlModule +{ +public: + static GUID m_LibID; + CComCriticalSection m_csStaticDataInitAndTypeInfo; + + CAtlModule() throw() + { + // One instance only per linking namespace! + AssertMsg(!_pAtlModule, ("CAtlModule: trying to create more than one instance per linking namespace\n")); + + fInit = false; + + m_cLock = 0; + m_pTermFuncs = NULL; + _pAtlModule = this; + + if (FAILED(m_csStaticDataInitAndTypeInfo.Init())) + { + AssertMsgFailed(("CAtlModule: failed to init critsect\n")); + return; + } + fInit = true; + } + + void Term() throw() + { + if (!fInit) + return; + + // Call all term functions. + if (m_pTermFuncs) + { + _ATL_TERMFUNC_ELEM *p = m_pTermFuncs; + _ATL_TERMFUNC_ELEM *pNext; + while (p) + { + p->pfn(p->pv); + pNext = p->pNext; + delete p; + p = pNext; + } + m_pTermFuncs = NULL; + } + m_csStaticDataInitAndTypeInfo.Term(); + fInit = false; + } + + virtual ~CAtlModule() throw() + { + Term(); + } + + virtual LONG Lock() throw() + { + return CComMultiThreadModel::Increment(&m_cLock); + } + + virtual LONG Unlock() throw() + { + return CComMultiThreadModel::Decrement(&m_cLock); + } + + virtual LONG GetLockCount() throw() + { + return m_cLock; + } + + HRESULT AddTermFunc(PFNATLTERMFUNC pfn, void *pv) + { + _ATL_TERMFUNC_ELEM *pNew = new(std::nothrow) _ATL_TERMFUNC_ELEM; + if (!pNew) + return E_OUTOFMEMORY; + pNew->pfn = pfn; + pNew->pv = pv; + CComCritSectLock<CComCriticalSection> lock(m_csStaticDataInitAndTypeInfo, false); + HRESULT hrc = lock.Lock(); + if (SUCCEEDED(hrc)) + { + pNew->pNext = m_pTermFuncs; + m_pTermFuncs = pNew; + } + else + { + delete pNew; + AssertMsgFailed(("CComModule::AddTermFunc: failed to lock critsect\n")); + } + return hrc; + } + +protected: + bool fInit; + LONG m_cLock; + _ATL_TERMFUNC_ELEM *m_pTermFuncs; +}; + +__declspec(selectany) GUID CAtlModule::m_LibID = {0x0, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0} }; + +struct _ATL_COM_MODULE +{ + HINSTANCE m_hInstTypeLib; + CComCriticalSection m_csObjMap; +}; + +#ifndef _delayimp_h +extern "C" IMAGE_DOS_HEADER __ImageBase; +#endif + +class CAtlComModule : public _ATL_COM_MODULE +{ +public: + static bool m_fInitFailed; + CAtlComModule() throw() + { + m_hInstTypeLib = reinterpret_cast<HINSTANCE>(&__ImageBase); + + if (FAILED(m_csObjMap.Init())) + { + AssertMsgFailed(("CAtlComModule: critsect init failed\n")); + m_fInitFailed = true; + return; + } + } + + ~CAtlComModule() + { + Term(); + } + + void Term() + { + m_csObjMap.Term(); + } +}; + +__declspec(selectany) bool CAtlComModule::m_fInitFailed = false; +__declspec(selectany) CAtlComModule _AtlComModule; + +template <class T> class ATL_NO_VTABLE CAtlModuleT : public CAtlModule +{ +public: + CAtlModuleT() throw() + { + T::InitLibId(); + } + + static void InitLibId() throw() + { + } +}; + +/** + * + * This class not _not_ be statically instantiated as a global variable! It may + * use VBoxRT before it's initialized otherwise, messing up logging and whatnot. + * + * When possible create the instance inside the TrustedMain() or main() as a + * stack variable. In DLLs use 'new' to instantiate it in the DllMain function. + */ +class CComModule : public CAtlModuleT<CComModule> +{ +public: + CComModule() + { + // One instance only per linking namespace! + AssertMsg(!_pModule, ("CComModule: trying to create more than one instance per linking namespace\n")); + _pModule = this; + m_pObjMap = NULL; + } + + ~CComModule() + { + } + + _ATL_OBJMAP_ENTRY *m_pObjMap; + HRESULT Init(_ATL_OBJMAP_ENTRY *p, HINSTANCE h, const GUID *pLibID = NULL) throw() + { + RT_NOREF1(h); + + if (pLibID) + m_LibID = *pLibID; + + // Go over the object map to do some sanity checking, making things + // crash early if something is seriously busted. + _ATL_OBJMAP_ENTRY *pEntry; + if (p != (_ATL_OBJMAP_ENTRY *)-1) + { + m_pObjMap = p; + if (m_pObjMap) + { + pEntry = m_pObjMap; + while (pEntry->pclsid) + pEntry++; + } + } + return S_OK; + } + + void Term() throw() + { + _ATL_OBJMAP_ENTRY *pEntry; + if (m_pObjMap) + { + pEntry = m_pObjMap; + while (pEntry->pclsid) + { + if (pEntry->pCF) + pEntry->pCF->Release(); + pEntry->pCF = NULL; + pEntry++; + } + } + + CAtlModuleT<CComModule>::Term(); + } + + HRESULT GetClassObject(REFCLSID rclsid, REFIID riid, void **ppv) throw() + { + *ppv = NULL; + HRESULT hrc = S_OK; + + if (m_pObjMap) + { + const _ATL_OBJMAP_ENTRY *pEntry = m_pObjMap; + + while (pEntry->pclsid) + { + if (pEntry->pfnGetClassObject && rclsid == *pEntry->pclsid) + { + if (!pEntry->pCF) + { + CComCritSectLock<CComCriticalSection> lock(_AtlComModule.m_csObjMap, false); + hrc = lock.Lock(); + if (FAILED(hrc)) + { + AssertMsgFailed(("CComModule::GetClassObject: failed to lock critsect\n")); + break; + } + + if (!pEntry->pCF) + { + hrc = pEntry->pfnGetClassObject(pEntry->pfnCreateInstance, __uuidof(IUnknown), (void **)&pEntry->pCF); + } + } + + if (pEntry->pCF) + { + hrc = pEntry->pCF->QueryInterface(riid, ppv); + } + break; + } + pEntry++; + } + } + + return hrc; + } + + // For EXE only: register all class factories with COM. + HRESULT RegisterClassObjects(DWORD dwClsContext, DWORD dwFlags) throw() + { + HRESULT hrc = S_OK; + _ATL_OBJMAP_ENTRY *pEntry; + if (m_pObjMap) + { + pEntry = m_pObjMap; + while (pEntry->pclsid && SUCCEEDED(hrc)) + { + if (pEntry->pfnGetClassObject) + { + IUnknown *p; + hrc = pEntry->pfnGetClassObject(pEntry->pfnCreateInstance, __uuidof(IUnknown), (void **)&p); + if (SUCCEEDED(hrc)) + hrc = CoRegisterClassObject(*(pEntry->pclsid), p, dwClsContext, dwFlags, &pEntry->dwRegister); + if (p) + p->Release(); + } + pEntry++; + } + } + return hrc; + } + // For EXE only: revoke all class factories with COM. + HRESULT RevokeClassObjects() throw() + { + HRESULT hrc = S_OK; + _ATL_OBJMAP_ENTRY *pEntry; + if (m_pObjMap != NULL) + { + pEntry = m_pObjMap; + while (pEntry->pclsid && SUCCEEDED(hrc)) + { + if (pEntry->dwRegister) + hrc = CoRevokeClassObject(pEntry->dwRegister); + pEntry++; + } + } + return hrc; + } +}; + + +template <class T> class CComCreator +{ +public: + static HRESULT WINAPI CreateInstance(void *pv, REFIID riid, void **ppv) + { + AssertReturn(ppv, E_POINTER); + *ppv = NULL; + HRESULT hrc = E_OUTOFMEMORY; + T *p = new(std::nothrow) T(pv); + if (p) + { + p->SetVoid(pv); + p->InternalFinalConstructAddRef(); + hrc = p->_AtlInitialConstruct(); + if (SUCCEEDED(hrc)) + hrc = p->FinalConstruct(); + p->InternalFinalConstructRelease(); + if (SUCCEEDED(hrc)) + hrc = p->QueryInterface(riid, ppv); + if (FAILED(hrc)) + delete p; + } + return hrc; + } +}; + +template <HRESULT hrc> class CComFailCreator +{ +public: + static HRESULT WINAPI CreateInstance(void *, REFIID, void **ppv) + { + AssertReturn(ppv, E_POINTER); + *ppv = NULL; + + return hrc; + } +}; + +template <class T1, class T2> class CComCreator2 +{ +public: + static HRESULT WINAPI CreateInstance(void *pv, REFIID riid, void **ppv) + { + AssertReturn(ppv, E_POINTER); + + return !pv ? T1::CreateInstance(NULL, riid, ppv) : T2::CreateInstance(pv, riid, ppv); + } +}; + +template <class Base> class CComObjectCached : public Base +{ +public: + CComObjectCached(void * = NULL) + { + } + virtual ~CComObjectCached() + { + // Catch refcount screwups by setting refcount to -(LONG_MAX/2). + m_iRef = -(LONG_MAX/2); + FinalRelease(); + } + STDMETHOD_(ULONG, AddRef)() throw() + { + // If you get errors about undefined InternalAddRef then Base does not + // derive from CComObjectRootEx. + ULONG l = InternalAddRef(); + if (l == 2) + { + AssertMsg(_pAtlModule, ("ATL: referring to ATL module without having one declared in this linking namespace\n")); + _pAtlModule->Lock(); + } + return l; + } + STDMETHOD_(ULONG, Release)() throw() + { + // If you get errors about undefined InternalRelease then Base does not + // derive from CComObjectRootEx. + ULONG l = InternalRelease(); + if (l == 0) + delete this; + else if (l == 1) + { + AssertMsg(_pAtlModule, ("ATL: referring to ATL module without having one declared in this linking namespace\n")); + _pAtlModule->Unlock(); + } + return l; + } + STDMETHOD(QueryInterface)(REFIID iid, void **ppvObj) throw() + { + // If you get errors about undefined _InternalQueryInterface then + // double check BEGIN_COM_MAP in the class definition. + return _InternalQueryInterface(iid, ppvObj); + } + static HRESULT WINAPI CreateInstance(CComObjectCached<Base> **pp) throw() + { + AssertReturn(pp, E_POINTER); + *pp = NULL; + + HRESULT hrc = E_OUTOFMEMORY; + CComObjectCached<Base> *p = new(std::nothrow) CComObjectCached<Base>(); + if (p) + { + p->SetVoid(NULL); + p->InternalFinalConstructAddRef(); + hrc = p->_AtlInitialConstruct(); + if (SUCCEEDED(hrc)) + hrc = p->FinalConstruct(); + p->InternalFinalConstructRelease(); + if (FAILED(hrc)) + delete p; + else + *pp = p; + } + return hrc; + } +}; + +template <class Base> class CComObjectNoLock : public Base +{ +public: + CComObjectNoLock(void * = NULL) + { + } + virtual ~CComObjectNoLock() + { + // Catch refcount screwups by setting refcount to -(LONG_MAX/2). + m_iRef = -(LONG_MAX/2); + FinalRelease(); + } + STDMETHOD_(ULONG, AddRef)() throw() + { + // If you get errors about undefined InternalAddRef then Base does not + // derive from CComObjectRootEx. + return InternalAddRef(); + } + STDMETHOD_(ULONG, Release)() throw() + { + // If you get errors about undefined InternalRelease then Base does not + // derive from CComObjectRootEx. + ULONG l = InternalRelease(); + if (l == 0) + delete this; + return l; + } + STDMETHOD(QueryInterface)(REFIID iid, void **ppvObj) throw() + { + // If you get errors about undefined _InternalQueryInterface then + // double check BEGIN_COM_MAP in the class definition. + return _InternalQueryInterface(iid, ppvObj); + } +}; + +class CComTypeInfoHolder +{ + /** @todo implement type info caching, making stuff more efficient - would we benefit? */ +public: + const GUID *m_pGUID; + const GUID *m_pLibID; + WORD m_iMajor; + WORD m_iMinor; + ITypeInfo *m_pTInfo; + + HRESULT GetTypeInfo(UINT iTInfo, LCID lcid, ITypeInfo **ppTInfo) + { + if (iTInfo != 0) + return DISP_E_BADINDEX; + return GetTI(lcid, ppTInfo); + } + HRESULT GetIDsOfNames(REFIID riid, LPOLESTR *pwszNames, UINT cNames, LCID lcid, DISPID *pDispID) + { + RT_NOREF1(riid); /* should be IID_NULL */ + HRESULT hrc = FetchTI(lcid); + if (m_pTInfo) + hrc = m_pTInfo->GetIDsOfNames(pwszNames, cNames, pDispID); + return hrc; + } + HRESULT Invoke(IDispatch *p, DISPID DispID, REFIID riid, LCID lcid, WORD iFlags, DISPPARAMS *pDispParams, + VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr) + { + RT_NOREF1(riid); /* should be IID_NULL */ + HRESULT hrc = FetchTI(lcid); + if (m_pTInfo) + hrc = m_pTInfo->Invoke(p, DispID, iFlags, pDispParams, pVarResult, pExcepInfo, puArgErr); + return hrc; + } +private: + static void __stdcall Cleanup(void *pv) + { + AssertReturnVoid(pv); + CComTypeInfoHolder *p = (CComTypeInfoHolder *)pv; + if (p->m_pTInfo != NULL) + p->m_pTInfo->Release(); + p->m_pTInfo = NULL; + } + + HRESULT GetTI(LCID lcid) + { + AssertMsg(_pAtlModule, ("ATL: referring to ATL module without having one declared in this linking namespace\n")); + Assert(m_pLibID && m_pGUID); + if (m_pTInfo) + return S_OK; + CComCritSectLock<CComCriticalSection> lock(_pAtlModule->m_csStaticDataInitAndTypeInfo, false); + HRESULT hrc = lock.Lock(); + ITypeLib *pTypeLib = NULL; + Assert(*m_pLibID != GUID_NULL); + hrc = LoadRegTypeLib(*m_pLibID, m_iMajor, m_iMinor, lcid, &pTypeLib); + if (SUCCEEDED(hrc)) + { + ITypeInfo *pTypeInfo; + hrc = pTypeLib->GetTypeInfoOfGuid(*m_pGUID, &pTypeInfo); + if (SUCCEEDED(hrc)) + { + ITypeInfo2 *pTypeInfo2; + if (SUCCEEDED(pTypeInfo->QueryInterface(__uuidof(ITypeInfo2), (void **)&pTypeInfo2))) + { + pTypeInfo->Release(); + pTypeInfo = pTypeInfo2; + } + m_pTInfo = pTypeInfo; + _pAtlModule->AddTermFunc(Cleanup, (void *)this); + } + pTypeLib->Release(); + } + return hrc; + } + HRESULT GetTI(LCID lcid, ITypeInfo **ppTInfo) + { + AssertReturn(ppTInfo, E_POINTER); + HRESULT hrc = S_OK; + if (!m_pTInfo) + hrc = GetTI(lcid); + if (m_pTInfo) + { + m_pTInfo->AddRef(); + hrc = S_OK; + } + *ppTInfo = m_pTInfo; + return hrc; + } + HRESULT FetchTI(LCID lcid) + { + if (!m_pTInfo) + return GetTI(lcid); + return S_OK; + } +}; + +template <class ThreadModel> class CComObjectRootEx +{ +public: + typedef ThreadModel _ThreadModel; + CComObjectRootEx() + { + m_iRef = 0L; + } + ~CComObjectRootEx() + { + } + ULONG InternalAddRef() + { + Assert(m_iRef != -1L); + return ThreadModel::Increment(&m_iRef); + } + ULONG InternalRelease() + { +#ifdef VBOX_STRICT + LONG c = ThreadModel::Decrement(&m_iRef); + AssertMsg(c >= -(LONG_MAX / 2), /* See ~CComObjectNoLock, ~CComObject & ~CComAggObject. */ + ("Release called on object which has been already destroyed!\n")); + return c; +#else + return ThreadModel::Decrement(&m_iRef); +#endif + } + ULONG OuterAddRef() + { + return m_pOuterUnknown->AddRef(); + } + ULONG OuterRelease() + { + return m_pOuterUnknown->Release(); + } + HRESULT OuterQueryInterface(REFIID iid, void **ppvObject) + { + return m_pOuterUnknown->QueryInterface(iid, ppvObject); + } + HRESULT _AtlInitialConstruct() + { + return m_CritSect.Init(); + } + void Lock() + { + m_CritSect.Lock(); + } + void Unlock() + { + m_CritSect.Unlock(); + } + void SetVoid(void *) + { + } + void InternalFinalConstructAddRef() + { + } + void InternalFinalConstructRelease() + { + Assert(m_iRef == 0); + } + HRESULT FinalConstruct() + { + return S_OK; + } + void FinalRelease() + { + } + static HRESULT WINAPI InternalQueryInterface(void *pThis, const _ATL_INTMAP_ENTRY *pEntries, REFIID iid, void **ppvObj) + { + AssertReturn(pThis, E_INVALIDARG); + AssertReturn(pEntries, E_INVALIDARG); + AssertReturn(ppvObj, E_POINTER); + *ppvObj = NULL; + if (iid == IID_IUnknown) + { + // For IUnknown use first interface, must be simple map entry. + Assert(pEntries->pFunc == COM_SIMPLEMAPENTRY); + IUnknown *pObj = (IUnknown *)((INT_PTR)pThis + pEntries->dw); + pObj->AddRef(); + *ppvObj = pObj; + return S_OK; + } + while (pEntries->pFunc) + { + if (iid == *pEntries->piid) + { + if (pEntries->pFunc == COM_SIMPLEMAPENTRY) + { + IUnknown *pObj = (IUnknown *)((INT_PTR)pThis + pEntries->dw); + pObj->AddRef(); + *ppvObj = pObj; + return S_OK; + } + else + return pEntries->pFunc(pThis, iid, ppvObj, pEntries->dw); + } + pEntries++; + } + return E_NOINTERFACE; + } + static HRESULT WINAPI _Delegate(void *pThis, REFIID iid, void **ppvObj, DWORD_PTR dw) + { + AssertPtrReturn(pThis, E_NOINTERFACE); + IUnknown *pObj = *(IUnknown **)((DWORD_PTR)pThis + dw); + // If this assertion fails then the object has a delegation with a NULL + // object pointer, which is highly unusual often means that the pointer + // was not set up correctly. Check the COM interface map of the class + // for bugs with initializing. + AssertPtrReturn(pObj, E_NOINTERFACE); + return pObj->QueryInterface(iid, ppvObj); + } + + union + { + LONG m_iRef; + IUnknown *m_pOuterUnknown; + }; +private: + typename ThreadModel::AutoDeleteCriticalSection m_CritSect; +}; + +template <class Base> class CComObject : public Base +{ +public: + CComObject(void * = NULL) throw() + { + AssertMsg(_pAtlModule, ("ATL: referring to ATL module without having one declared in this linking namespace\n")); + _pAtlModule->Lock(); + } + virtual ~CComObject() throw() + { + AssertMsg(_pAtlModule, ("ATL: referring to ATL module without having one declared in this linking namespace\n")); + // Catch refcount screwups by setting refcount to -(LONG_MAX/2). + m_iRef = -(LONG_MAX/2); + FinalRelease(); + _pAtlModule->Unlock(); + } + STDMETHOD_(ULONG, AddRef)() + { + // If you get errors about undefined InternalAddRef then Base does not + // derive from CComObjectRootEx. + return InternalAddRef(); + } + STDMETHOD_(ULONG, Release)() + { + // If you get errors about undefined InternalRelease then Base does not + // derive from CComObjectRootEx. + ULONG l = InternalRelease(); + if (l == 0) + delete this; + return l; + } + STDMETHOD(QueryInterface)(REFIID iid, void **ppvObj) throw() + { + // If you get errors about undefined _InternalQueryInterface then + // double check BEGIN_COM_MAP in the class definition. + return _InternalQueryInterface(iid, ppvObj); + } + + static HRESULT WINAPI CreateInstance(CComObject<Base> **pp) throw() + { + AssertReturn(pp, E_POINTER); + *pp = NULL; + + HRESULT hrc = E_OUTOFMEMORY; + CComObject<Base> *p = NULL; + try + { + p = new CComObject<Base>(); + } + catch (std::bad_alloc &) + { + p = NULL; + } + if (p) + { + p->InternalFinalConstructAddRef(); + try + { + hrc = p->_AtlInitialConstruct(); + if (SUCCEEDED(hrc)) + hrc = p->FinalConstruct(); + } + catch (std::bad_alloc &) + { + hrc = E_OUTOFMEMORY; + } + p->InternalFinalConstructRelease(); + if (FAILED(hrc)) + { + delete p; + p = NULL; + } + } + *pp = p; + return hrc; + } +}; + +template <class T, const IID *piid, const GUID *pLibID, WORD iMajor = 1, WORD iMinor = 0> class ATL_NO_VTABLE IDispatchImpl : public T +{ +public: + // IDispatch + STDMETHOD(GetTypeInfoCount)(UINT *pcTInfo) + { + if (!pcTInfo) + return E_POINTER; + *pcTInfo = 1; + return S_OK; + } + STDMETHOD(GetTypeInfo)(UINT cTInfo, LCID lcid, ITypeInfo **ppTInfo) + { + return tih.GetTypeInfo(cTInfo, lcid, ppTInfo); + } + STDMETHOD(GetIDsOfNames)(REFIID riid, LPOLESTR *pwszNames, UINT cNames, LCID lcid, DISPID *pDispID) + { + return tih.GetIDsOfNames(riid, pwszNames, cNames, lcid, pDispID); + } + STDMETHOD(Invoke)(DISPID DispID, REFIID riid, LCID lcid, WORD iFlags, DISPPARAMS *pDispParams, VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr) + { + return tih.Invoke((IDispatch *)this, DispID, riid, lcid, iFlags, pDispParams, pVarResult, pExcepInfo, puArgErr); + } +protected: + static CComTypeInfoHolder tih; + static HRESULT GetTI(LCID lcid, ITypeInfo **ppTInfo) + { + return tih.GetTI(lcid, ppTInfo); + } +}; + +template <class T, const IID *piid, const GUID *pLibID, WORD iMajor, WORD iMinor> CComTypeInfoHolder IDispatchImpl<T, piid, pLibID, iMajor, iMinor>::tih = { piid, pLibID, iMajor, iMinor, NULL }; + + +template <class Base> class CComContainedObject : public Base +{ +public: + CComContainedObject(void *pv) + { + m_pOuterUnknown = (IUnknown *)pv; + } + + STDMETHOD_(ULONG, AddRef)() throw() + { + return OuterAddRef(); + } + STDMETHOD_(ULONG, Release)() throw() + { + return OuterRelease(); + } + STDMETHOD(QueryInterface)(REFIID iid, void **ppvObj) throw() + { + return OuterQueryInterface(iid, ppvObj); + } +}; + +template <class Aggregated> class CComAggObject : + public IUnknown, + public CComObjectRootEx<typename Aggregated::_ThreadModel::ThreadModelNoCS> +{ +public: + CComAggObject(void *pv) : + m_Aggregated(pv) + { + AssertMsg(_pAtlModule, ("ATL: referring to ATL module without having one declared in this linking namespace\n")); + _pAtlModule->Lock(); + } + virtual ~CComAggObject() + { + AssertMsg(_pAtlModule, ("ATL: referring to ATL module without having one declared in this linking namespace\n")); + // Catch refcount screwups by setting refcount to -(LONG_MAX/2). + m_iRef = -(LONG_MAX/2); + FinalRelease(); + _pAtlModule->Unlock(); + } + HRESULT _AtlInitialConstruct() + { + HRESULT hrc = m_Aggregated._AtlInitialConstruct(); + if (SUCCEEDED(hrc)) + { + hrc = CComObjectRootEx<typename Aggregated::_ThreadModel::ThreadModelNoCS>::_AtlInitialConstruct(); + } + return hrc; + } + HRESULT FinalConstruct() + { + CComObjectRootEx<Aggregated::_ThreadModel::ThreadModelNoCS>::FinalConstruct(); + return m_Aggregated.FinalConstruct(); + } + void FinalRelease() + { + CComObjectRootEx<Aggregated::_ThreadModel::ThreadModelNoCS>::FinalRelease(); + m_Aggregated.FinalRelease(); + } + + STDMETHOD_(ULONG, AddRef)() + { + return InternalAddRef(); + } + STDMETHOD_(ULONG, Release)() + { + ULONG l = InternalRelease(); + if (l == 0) + delete this; + return l; + } + STDMETHOD(QueryInterface)(REFIID iid, void **ppvObj) + { + AssertReturn(ppvObj, E_POINTER); + *ppvObj = NULL; + + HRESULT hrc = S_OK; + if (iid == __uuidof(IUnknown)) + { + *ppvObj = (void *)(IUnknown *)this; + AddRef(); + } + else + hrc = m_Aggregated._InternalQueryInterface(iid, ppvObj); + return hrc; + } + static HRESULT WINAPI CreateInstance(LPUNKNOWN pUnkOuter, CComAggObject<Aggregated> **pp) + { + AssertReturn(pp, E_POINTER); + *pp = NULL; + + HRESULT hrc = E_OUTOFMEMORY; + CComAggObject<Aggregated> *p = new(std::nothrow) CComAggObject<Aggregated>(pUnkOuter); + if (p) + { + p->SetVoid(NULL); + p->InternalFinalConstructAddRef(); + hrc = p->_AtlInitialConstruct(); + if (SUCCEEDED(hrc)) + hrc = p->FinalConstruct(); + p->InternalFinalConstructRelease(); + if (FAILED(hrc)) + delete p; + else + *pp = p; + } + return hrc; + } + + CComContainedObject<Aggregated> m_Aggregated; +}; + +class CComClassFactory: + public IClassFactory, + public CComObjectRootEx<CComMultiThreadModel> +{ +public: + BEGIN_COM_MAP(CComClassFactory) + COM_INTERFACE_ENTRY(IClassFactory) + END_COM_MAP() + + virtual ~CComClassFactory() + { + } + + // IClassFactory + STDMETHOD(CreateInstance)(LPUNKNOWN pUnkOuter, REFIID riid, void **ppvObj) + { + Assert(m_pfnCreateInstance); + HRESULT hrc = E_POINTER; + if (ppvObj) + { + *ppvObj = NULL; + if (pUnkOuter && riid != __uuidof(IUnknown)) + { + AssertMsgFailed(("CComClassFactory: cannot create an aggregated object other than IUnknown\n")); + hrc = CLASS_E_NOAGGREGATION; + } + else + hrc = m_pfnCreateInstance(pUnkOuter, riid, ppvObj); + } + return hrc; + } + + STDMETHOD(LockServer)(BOOL fLock) + { + AssertMsg(_pAtlModule, ("ATL: referring to ATL module without having one declared in this linking namespace\n")); + if (fLock) + _pAtlModule->Lock(); + else + _pAtlModule->Unlock(); + return S_OK; + } + + // Set creator for use by the factory. + void SetVoid(void *pv) + { + m_pfnCreateInstance = (PFNCREATEINSTANCE)pv; + } + + PFNCREATEINSTANCE m_pfnCreateInstance; +}; + +template <class T> class CComClassFactorySingleton : public CComClassFactory +{ +public: + CComClassFactorySingleton() : + m_hrc(S_OK), + m_pObj(NULL) + { + } + virtual ~CComClassFactorySingleton() + { + if (m_pObj) + m_pObj->Release(); + } + // IClassFactory + STDMETHOD(CreateInstance)(LPUNKNOWN pUnkOuter, REFIID riid, void **pvObj) + { + HRESULT hrc = E_POINTER; + if (ppvObj) + { + *ppvObj = NULL; + // Singleton factories do not support aggregation. + AssertReturn(!pUnkOuter, CLASS_E_NOAGGREGATION); + + // Test if singleton is already created. Do it outside the lock, + // relying on atomic checks. Remember the inherent race! + if (SUCCEEDED(m_hrc) && !m_pObj) + { + Lock(); + // Make sure that the module is in use, otherwise the + // module can terminate while we're creating a new + // instance, which leads to strange errors. + LockServer(true); + __try + { + // Repeat above test to avoid races when multiple threads + // want to create a singleton simultaneously. + if (SUCCEEDED(m_hrc) && !m_pObj) + { + CComObjectCached<T> *p; + m_hrc = CComObjectCached<T>::CreateInstance(&p); + if (SUCCEEDED(m_hrc)) + { + m_hrc = p->QueryInterface(IID_IUnknown, (void **)&m_pObj); + if (FAILED(m_hrc)) + { + delete p; + } + } + } + } + __finally + { + Unlock(); + LockServer(false); + } + } + if (SUCCEEDED(m_hrc)) + { + hrc = m_pObj->QueryInterface(riid, ppvObj); + } + else + { + hrc = m_hrc; + } + } + return hrc; + } + HRESULT m_hrc; + IUnknown *m_pObj; +}; + + +template <class T, const CLSID *pClsID = &CLSID_NULL> class CComCoClass +{ +public: + DECLARE_CLASSFACTORY() + DECLARE_AGGREGATABLE(T) + static const CLSID& WINAPI GetObjectCLSID() + { + return *pClsID; + } + template <class Q> + static HRESULT CreateInstance(Q **pp) + { + return T::_CreatorClass::CreateInstance(NULL, __uuidof(Q), (void **)pp); + } +}; + +} /* namespace ATL */ + +#endif /* !VBOX_INCLUDED_com_microatl_h */ + |