C++ Detach函數代碼示例

 void
 TerminalDisplay::DisplayInfo(const std::vector<std::string>& Options) {
   char infoColIdx = 0;
   if (GetContext()->GetColorizer()) {
      infoColIdx = GetContext()->GetColorizer()->GetInfoColor();
   }
   WriteRawString("\n", 1);
   for (size_t i = 0, n = Options.size(); i < n; ++i) {
     Text t(Options[i], infoColIdx);
     WriteWrappedElement(t, 0, 0, (size_t) -1);
     WriteRawString("\n", 1);
   }
   // Reset position
   Detach();
   Attach();
 }

void TaskManager::UpdateProcesses(Uint32 deltaMs)
{
    TaskPtr next;
    for (auto current : task_list) {
        if (current->IsDead()) {
            next = current->GetNext();
            if (next) {
                current->SetNext(TaskPtr(nullptr));
                Attach(next);
            }
            Detach(current);
        } else if (current->IsActive() && !current->IsPaused()) {
            current->OnUpdate(deltaMs);
        }
    }
}

// ----------------------------------------------------------------------------
void MouseSap::OnWindowClose(wxEvent& event)
// ----------------------------------------------------------------------------
{
    // wxEVT_DESTROY entry

    wxWindow* pWindow = (wxWindow*)(event.GetEventObject());

    if ( (pWindow) && (m_EditorPtrs.Index(pWindow) != wxNOT_FOUND))
    {   // window is one of ours
        Detach(pWindow);
        #ifdef LOGGING
         LOGIT( _T("OnWindowClose Detached %p"), pWindow);
        #endif //LOGGING
    }
    event.Skip();
}//OnWindowClose

void cEntity::AttachTo(cEntity * a_AttachTo)
{
	if (m_AttachedTo == a_AttachTo)
	{
		// Already attached to that entity, nothing to do here
		return;
	}

	// Detach from any previous entity:
	Detach();

	// Attach to the new entity:
	m_AttachedTo = a_AttachTo;
	a_AttachTo->m_Attachee = this;
	m_World->BroadcastAttachEntity(*this, a_AttachTo);
}

/// <summary>
/// Create new process and attach to it
/// </summary>
/// <param name="path">Executable path</param>
/// <param name="suspended">Leave process in suspended state. To resume process one should resume its main thread</param>
/// <param name="forceInit">If 'suspended' is true, this flag will enforce process initialization via second thread</param>
/// <param name="cmdLine">Process command line</param>
/// <param name="currentDir">Startup directory</param>
/// <param name="pStartup">Additional startup params</param>
/// <returns>Status code</returns>
NTSTATUS Process::CreateAndAttach( 
    const std::wstring& path, 
    bool suspended /*= false*/,
    bool forceInit /*= true*/,
    const std::wstring& cmdLine /*= L""*/,
    const wchar_t* currentDir /*= nullptr*/,
    STARTUPINFOW* pStartup /*= nullptr*/
    )
{
    Detach();

    STARTUPINFOW si = { 0 };
    PROCESS_INFORMATION pi = { 0 };
    if (!pStartup)
        pStartup = &si;

    if (!CreateProcessW(
        path.c_str(), const_cast<LPWSTR>(cmdLine.c_str()), 
        NULL, NULL, FALSE, CREATE_SUSPENDED, NULL, 
        currentDir, pStartup, &pi
        ))
    {
        return LastNtStatus();
    } 

    // Get handle ownership
    auto status = _core.Open( pi.hProcess );
    if (NT_SUCCESS( status ))
    {
        _nativeLdr.Init();

        // Check if process must be left in suspended mode
        if (suspended)
        {
            // Create new thread to make sure LdrInitializeProcess gets called
            if (forceInit)
                EnsureInit();
        }
        else
            ResumeThread( pi.hThread );
    }

    // Close unneeded handles
    CloseHandle( pi.hThread );

    return status;
}

int main(int argc, char *argv[])
{
	HIJACK *hijack;
	FUNC *func;
	unsigned long addr;
	PLT *plts, *plt;
	
	if (argc != 2)
		usage(argv[0]);
	
	hijack = InitHijack();
    ToggleFlag(hijack, F_DEBUG);
    ToggleFlag(hijack, F_DEBUG_VERBOSE);
	AssignPid(hijack, atoi(argv[1]));
	
	if (Attach(hijack) != ERROR_NONE)
	{
		fprintf(stderr, "[-] Couldn't attach!\n");
		exit(EXIT_FAILURE);
	}

	if (LocateAllFunctions(hijack) != ERROR_NONE)
	{
		fprintf(stderr, "[-] Couldn't locate all functions!\n");
		exit(EXIT_FAILURE);
	}

    if (LocateSystemCall(hijack) != ERROR_NONE) {
        fprintf(stderr, "[-] Couldn't locate system call!\n");
        exit(EXIT_FAILURE);
    }

    addr = MapMemory(hijack, NULL, 8192, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANON | MAP_SHARED);
    if (GetErrorCode(hijack) != ERROR_NONE) {
        fprintf(stderr, "[-] %s\n", GetErrorString(hijack));
        perror("ptrace");
    }
	
	printf("[*] PLT/GOT @ 0x%016lx\n", hijack->pltgot);
	printf("[*] Baseaddr @ 0x%016lx\n", hijack->baseaddr);
    printf("[*] Syscall @ 0x%016lx\n", hijack->syscalladdr);
    printf("[*] addr @ 0x%016lx\n", addr);

	Detach(hijack);
	
	return 0;
}

void CInventoryItem::OnEvent (NET_Packet& P, u16 type)
{
	switch (type)
	{
	case GE_ADDON_ATTACH:
		{
			u32 ItemID;
			P.r_u32			(ItemID);
			CInventoryItem*	 ItemToAttach	= smart_cast<CInventoryItem*>(Level().Objects.net_Find(ItemID));
			if (!ItemToAttach) break;
			Attach(ItemToAttach,true);
			CActor* pActor = smart_cast<CActor*>(object().H_Parent());
			if (pActor && pActor->inventory().ActiveItem() == this)
			{
				pActor->inventory().SetPrevActiveSlot(pActor->inventory().GetActiveSlot());
				pActor->inventory().Activate(NO_ACTIVE_SLOT);
				
			}
		}break;
	case GE_ADDON_DETACH:
		{
			string64			i_name;
			P.r_stringZ			(i_name);
			Detach(i_name, true);
			CActor* pActor = smart_cast<CActor*>(object().H_Parent());
			if (pActor && pActor->inventory().ActiveItem() == this)
			{
				pActor->inventory().SetPrevActiveSlot(pActor->inventory().GetActiveSlot());
				pActor->inventory().Activate(NO_ACTIVE_SLOT);
			};
		}break;	
	case GE_CHANGE_POS:
		{
			Fvector p; 
			P.r_vec3(p);
			CPHSynchronize* pSyncObj = NULL;
			pSyncObj = object().PHGetSyncItem(0);
			if (!pSyncObj) return;
			SPHNetState state;
			pSyncObj->get_State(state);
			state.position = p;
			state.previous_position = p;
			pSyncObj->set_State(state);

		}break;
	}
}

/*----------------------------------------------------------------------------------------------------------------------
|	Sets all data members to their factory default settings: `inf_open', `logf_open' and `quit_now' are set to false;
|	`message' to the null string, and the pointers `data', `characters', `assumptions', `taxa' and `trees'
|	are all set to NULL. The C-string `next_command' is allocated COMMAND_MAXLEN + 1 bytes if it is currently NULL,
|	and its first byte is set to the null character to create an empty `next_command' string.
*/
void GarliReader::FactoryDefaults()
{
    isEmpty = true;
    inf_open = false;
    logf_open = false;
    quit_now = false;
    message.clear();

    if (trees != NULL)
    {
        Detach(trees);
        delete trees;
        trees = NULL;
    }

    if (taxa != NULL)
    {
        Detach(taxa);
        delete taxa;
        taxa = NULL;
    }

    if (assumptions != NULL)
    {
        Detach(assumptions);
        delete assumptions;
        assumptions = NULL;
    }

    if (distances != NULL)
    {
        Detach(distances);
        delete distances;
        distances = NULL;
    }

    if (characters != NULL)
    {
        Detach(characters);
        delete characters;
        characters = NULL;
    }

    if (data != NULL)
    {
        Detach(data);
        delete data;
        data = NULL;
    }

    if (next_command == NULL)
        next_command = new char[COMMAND_MAXLEN + 1];
    next_command[0] = '\0';
}

/**
 * Windows のウィンドウが破棄されるときに非クライアント領域が破棄されると、最後に呼び出されたメンバー関數は、フレームワークによって呼び出されます
 * @param[in] wParam パラメタ
 * @param[in] lParam パラメタ
 */
void CWndProc::OnNcDestroy(WPARAM wParam, LPARAM lParam)
{
	LONG_PTR pfnWndProc = ::GetWindowLongPtr(m_hWnd, GWLP_WNDPROC);
	DefWindowProc(WM_NCDESTROY, wParam, lParam);
	if (::GetWindowLong(m_hWnd, GWLP_WNDPROC) == pfnWndProc)
	{
		if (m_pfnSuper != NULL)
		{
			::SetWindowLongPtr(m_hWnd, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(m_pfnSuper));
			m_pfnSuper = NULL;
		}
	}
	Detach();

	// call special post-cleanup routine
	PostNcDestroy();
}

CDataNode& 
CDataNode::operator=( const CDataNode& src )
{GUCEF_TRACE;

    if ( this != &src )
    {
        // detach from our current tree
        Detach();
        DelSubTree();
        
        _name = src._name;
        m_value = src.m_value;
        _atts = src._atts;

    }               
    return *this;
}

void cLuaState::Attach(lua_State * a_State)
{
	if (m_LuaState != NULL)
	{
		LOGINFO("%s: Already contains a LuaState (0x%p), will be closed / detached.", __FUNCTION__, m_LuaState);
		if (m_IsOwned)
		{
			Close();
		}
		else
		{
			Detach();
		}
	}
	m_LuaState = a_State;
	m_IsOwned = false;
}

dBaseHierarchy::~dBaseHierarchy () 
{
	dBaseHierarchy *ptr;
	dBaseHierarchy *tmp;

	if (m_parent) {
		Detach();
	}

	for (ptr = m_child; ptr; ptr = tmp) {
		tmp = ptr->m_sibling;
		_ASSERTE (0);
		tmp->m_parent = NULL;
		delete ptr;
	}

}

 /*
  * Creates a new Mutex object.
  */
  bool Create(LPSECURITY_ATTRIBUTES lpSA = NULL, BOOL bInitialOwn = TRUE,
              const TCHAR *szName = NULL)
  {

    bool r = false;

    Detach();

    if (NULL != (m_hMutex = CreateMutex(lpSA, bInitialOwn, szName))) {

      m_tsName  = szName;
      r         = true;

    }

    return r;
  }

void Node::AttachChild(Node * c)
{
 Detach();

 if (child)
 {
  c->next = child;
  c->last = child->last;
  child = c;
 
  child->next->last = child;
  child->last->next = child;  
 }
 else child = c;
 
 child->parent = this;
}

HRESULT fsShellBrowsersEvents::Attach(SHDocVw::IShellWindowsPtr& spSHWnds)
{
	if (m_bDetaching)
		return S_FALSE;

	if (is_Attached ())
		Detach ();

	LONG cItems = spSHWnds->GetCount ();
	HRESULT hr;

	
	for (LONG i = 0; i < cItems; i++)
	{
		try {
		IDispatchPtr spDisp;
		_variant_t va (i, VT_I4);
		
		spDisp = spSHWnds->Item (va);

		SHDocVw::IWebBrowser2Ptr spBrowser (spDisp);

		if (spBrowser == NULL)
			continue;

		
		fsShellBrowsersEvents* pBrowser = new fsShellBrowsersEvents;
		
		hr = pBrowser->Attach (spBrowser);

		if (FAILED (hr))
		{
			delete pBrowser;
			return hr;
		}

		pBrowser->SetEventFunc (m_pfnEvents, m_lpEventsParam);

		m_vBrowsers.add (pBrowser);
		}
		catch (...) {}
	}
	
	return S_OK;
}