201 lines
No EOL
6.5 KiB
C++
201 lines
No EOL
6.5 KiB
C++
/*
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** Command & Conquer Renegade(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/***********************************************************************************************
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*** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ***
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***********************************************************************************************
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* *
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* Project Name : commando *
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* *
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* $Archive:: /Commando/Code/Commando/singletoninstancekeeper.cpp $*
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* *
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* Author:: Patrick Smith *
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* *
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* $Modtime:: 11/29/01 1:05p $*
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* *
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* $Revision:: 4 $*
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* *
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*---------------------------------------------------------------------------------------------*
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* Functions: *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#include "singletoninstancekeeper.h"
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#include "wwdebug.h"
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#include "autostart.h"
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//
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// Disable 'unreferenced inline function has been removed'
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//
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#pragma warning(disable : 4514)
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//////////////////////////////////////////////////////////////////////
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// Local constants
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//////////////////////////////////////////////////////////////////////
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static const char * AUTOPLAY_GUID = "01AF9993-3492-11d3-8F6F-0060089C05B1";
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//////////////////////////////////////////////////////////////////////
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// Static member initialization
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//////////////////////////////////////////////////////////////////////
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const char * SingletonInstanceKeeperClass::APP_GUID = "C6D925A3-7A9B-4ca3-866D-8B4D506C3665";
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bool SingletonInstanceKeeperClass::AllowMultipleInstances = false;
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//////////////////////////////////////////////////////////////////////
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//
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// SingletonInstanceKeeperClass
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//
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//////////////////////////////////////////////////////////////////////
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SingletonInstanceKeeperClass::SingletonInstanceKeeperClass (void) :
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AppMutex (NULL),
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AutoPlayMutex (NULL)
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{
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if (AutoRestart.Get_Restart_Flag()) {
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AllowMultipleInstances = true;
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}
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return;
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}
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//////////////////////////////////////////////////////////////////////
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//
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// SingletonInstanceKeeperClass
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//
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//////////////////////////////////////////////////////////////////////
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SingletonInstanceKeeperClass::~SingletonInstanceKeeperClass (void)
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{
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if (AppMutex != NULL) {
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::CloseHandle (AppMutex);
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}
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if (AutoPlayMutex != NULL) {
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::CloseHandle (AutoPlayMutex);
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}
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return;
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}
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//////////////////////////////////////////////////////////////////////
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//
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// Verify_Safe_To_Execute
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//
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//////////////////////////////////////////////////////////////////////
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bool
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SingletonInstanceKeeperClass::Verify_Safe_To_Execute (void)
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{
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bool retval = false;
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//
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// Create a mutex with a unique name to Renegade in order to determine if
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// our app is already running.
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//
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// WARNING: DO NOT use this number for any other application except Renegade
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//
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AppMutex = ::CreateMutex (NULL, FALSE, APP_GUID);
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//
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// Is there already an instance of this app somewhere?
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//
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if (::GetLastError () == ERROR_ALREADY_EXISTS) {
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if (AllowMultipleInstances) {
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WWDEBUG_SAY (("Renegade is already running but AllowMultipleInstances is true\n"));
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retval = true;
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} else {
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//
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// Find the previous instance
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//
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HWND main_wnd = ::FindWindow (APP_GUID, NULL);
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if (main_wnd != NULL) {
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::SetForegroundWindow (main_wnd);
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::ShowWindow (main_wnd, SW_RESTORE);
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}
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WWDEBUG_SAY (("Renegade is already running...Bail!\n"));
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}
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} else {
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WWDEBUG_SAY (("Create AppMutex okay.\n"));
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//
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// Obtain the mutex unique to the Renegade AutoPlay application.
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//
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// WARNING: DO NOT use this number for any other application except Renegade AutoPlay
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//
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do
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{
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//
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// Attempt to open the mutex
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//
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AutoPlayMutex = ::OpenMutex (MUTEX_ALL_ACCESS, FALSE, AUTOPLAY_GUID);
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if (AutoPlayMutex != NULL) {
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WWDEBUG_SAY (("Waiting for Autoplay to quit!\n"));
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//
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// Wait for up to 30 seconds for the autoplay app to close
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//
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if (::WaitForSingleObject (AutoPlayMutex, 30000) == WAIT_FAILED) {
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WWDEBUG_SAY (("Failed waiting for AutoPlayMutex\n"));
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::CloseHandle (AutoPlayMutex);
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AutoPlayMutex = NULL;
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}
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}
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//
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// Create a mutex with a name unique to the Renegade AutoPlay application.
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// This prevents the autoplay from running since it cannot get the mutex.
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// Renegade needs both of these mutexs before it is allowed to run.
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//
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if (AutoPlayMutex == NULL) {
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AutoPlayMutex = ::CreateMutex (NULL, FALSE, AUTOPLAY_GUID);
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if (::GetLastError () == ERROR_ALREADY_EXISTS) {
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::CloseHandle (AutoPlayMutex);
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AutoPlayMutex = NULL;
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::Sleep (2500);
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} else {
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WWDEBUG_SAY (("Create AutoPlayMutex.\n"));
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}
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}
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} while (AutoPlayMutex == NULL);
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WWDEBUG_SAY (("Got AutoPlayMutex okay.\n"));
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retval = true;
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}
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return retval;
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}
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//////////////////////////////////////////////////////////////////////
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//
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// Allow_Multiple_Instances
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//
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//////////////////////////////////////////////////////////////////////
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void SingletonInstanceKeeperClass::Allow_Multiple_Instances(bool flag)
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{
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AllowMultipleInstances = flag;
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} |