nuclear@1: /************************************************************************************
nuclear@1: 
nuclear@1: Filename    :   OVR_System.cpp
nuclear@1: Content     :   General kernel initialization/cleanup, including that
nuclear@1:                 of the memory allocator.
nuclear@1: Created     :   September 19, 2012
nuclear@1: Notes       : 
nuclear@1: 
nuclear@1: Copyright   :   Copyright 2012 Oculus VR, Inc. All Rights reserved.
nuclear@1: 
nuclear@1: Use of this software is subject to the terms of the Oculus license
nuclear@1: agreement provided at the time of installation or download, or which
nuclear@1: otherwise accompanies this software in either electronic or hard copy form.
nuclear@1: 
nuclear@1: ************************************************************************************/
nuclear@1: 
nuclear@1: #include "OVR_System.h"
nuclear@1: #include "OVR_Threads.h"
nuclear@1: #include "OVR_Timer.h"
nuclear@1: 
nuclear@1: namespace OVR {
nuclear@1: 
nuclear@1: // *****  OVR::System Implementation
nuclear@1: 
nuclear@1: // Initializes System core, installing allocator.
nuclear@1: void System::Init(Log* log, Allocator *palloc)
nuclear@1: {    
nuclear@1:     if (!Allocator::GetInstance())
nuclear@1:     {
nuclear@1:         Log::SetGlobalLog(log);
nuclear@1:         Timer::initializeTimerSystem();
nuclear@1:         Allocator::setInstance(palloc);
nuclear@1:     }
nuclear@1:     else
nuclear@1:     {
nuclear@1:         OVR_DEBUG_LOG(("System::Init failed - duplicate call."));
nuclear@1:     }
nuclear@1: }
nuclear@1: 
nuclear@1: void System::Destroy()
nuclear@1: {    
nuclear@1:     if (Allocator::GetInstance())
nuclear@1:     {
nuclear@1:         // Wait for all threads to finish; this must be done so that memory
nuclear@1:         // allocator and all destructors finalize correctly.
nuclear@1: #ifdef OVR_ENABLE_THREADS
nuclear@1:         Thread::FinishAllThreads();
nuclear@1: #endif
nuclear@1: 
nuclear@1:         // Shutdown heap and destroy SysAlloc singleton, if any.
nuclear@1:         Allocator::GetInstance()->onSystemShutdown();
nuclear@1:         Allocator::setInstance(0);
nuclear@1: 
nuclear@1:         Timer::shutdownTimerSystem();
nuclear@1:         Log::SetGlobalLog(Log::GetDefaultLog());
nuclear@1:     }
nuclear@1:     else
nuclear@1:     {
nuclear@1:         OVR_DEBUG_LOG(("System::Destroy failed - System not initialized."));
nuclear@1:     }
nuclear@1: }
nuclear@1: 
nuclear@1: // Returns 'true' if system was properly initialized.
nuclear@1: bool System::IsInitialized()
nuclear@1: {
nuclear@1:     return Allocator::GetInstance() != 0;
nuclear@1: }
nuclear@1: 
nuclear@1: } // OVR
nuclear@1: