1 files changed, 148 insertions, 0 deletions
diff --git a/LibOVRKernel/Src/Kernel/OVR_System.cpp b/LibOVRKernel/Src/Kernel/OVR_System.cpp
new file mode 100644
index 0000000..6ab1294
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+++ b/LibOVRKernel/Src/Kernel/OVR_System.cpp
@@ -0,0 +1,148 @@
+/************************************************************************************
+
+Filename    :   OVR_System.cpp
+Content     :   General kernel initialization/cleanup, including that
+                of the memory allocator.
+Created     :   September 19, 2012
+Notes       : 
+
+Copyright   :   Copyright 2014 Oculus VR, LLC All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.2 (the "License"); 
+you may not use the Oculus VR Rift SDK except in compliance with the License, 
+which is provided at the time of installation or download, or which 
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+http://www.oculusvr.com/licenses/LICENSE-3.2 
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK 
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+
+#include "OVR_System.h"
+#include "OVR_Threads.h"
+#include "OVR_Timer.h"
+#include "OVR_DebugHelp.h"
+
+#ifdef OVR_OS_MS
+    #pragma warning(push, 0)
+    #include "OVR_Win32_IncludeWindows.h" // GetModuleHandleEx
+    #pragma warning(pop)
+#endif
+
+namespace OVR {
+
+
+//-----------------------------------------------------------------------------
+// Initialization/Shutdown Callbacks
+
+static SystemSingletonInternal *SystemShutdownListenerList = nullptr;  // Points to the most recent SystemSingletonInternal added to the list.
+
+static Lock& GetSSILock()
+{                           // Put listLock in a function so that it can be constructed on-demand.
+    static Lock listLock;   // Will construct on the first usage. However, the guarding of this construction is not thread-safe 
+    return listLock;        // under all compilers. However, since we are initially calling this on startup before other threads
+}                           // could possibly exist, the first usage of this will be before other threads exist.
+
+void SystemSingletonInternal::RegisterDestroyCallback()
+{
+    Lock::Locker locker(&GetSSILock());
+
+    // Insert the listener at the front of the list (top of the stack). This is an analogue of a C++ forward_list::push_front or stack::push.
+    NextShutdownSingleton = SystemShutdownListenerList;
+    SystemShutdownListenerList = this;
+}
+
+
+//-----------------------------------------------------------------------------
+// System
+
+// Initializes System core, installing allocator.
+void System::Init(Log* log, Allocator *palloc)
+{    
+    if (!Allocator::GetInstance())
+    {
+        if (Allocator::IsTrackingLeaks())
+        {
+            SymbolLookup::Initialize();
+        }
+
+        Log::SetGlobalLog(log);
+        Timer::initializeTimerSystem();
+        Allocator::setInstance(palloc);
+    }
+    else
+    {
+        OVR_DEBUG_LOG(("[System] Init failed - duplicate call."));
+    }
+}
+
+void System::Destroy()
+{    
+    if (Allocator::GetInstance())
+    {
+        // Invoke all of the post-finish callbacks (normal case)
+        for (SystemSingletonInternal *listener = SystemShutdownListenerList; listener; listener = listener->NextShutdownSingleton)
+        {
+            listener->OnThreadDestroy();
+        }
+
+        #ifdef OVR_ENABLE_THREADS
+            // Wait for all threads to finish; this must be done so that memory
+            // allocator and all destructors finalize correctly.
+            Thread::FinishAllThreads();
+        #endif
+
+        // Invoke all of the post-finish callbacks (normal case)
+        for (SystemSingletonInternal* next, *listener = SystemShutdownListenerList; listener; listener = next)
+        {
+            next = listener->NextShutdownSingleton;
+
+            listener->OnSystemDestroy();
+        }
+
+        SystemShutdownListenerList = nullptr;
+
+        // Shutdown heap and destroy SysAlloc singleton, if any.
+        Allocator::GetInstance()->onSystemShutdown();
+        Allocator::setInstance(nullptr);
+
+        if (Allocator::IsTrackingLeaks())
+        {
+            SymbolLookup::Shutdown();
+        }
+
+        Timer::shutdownTimerSystem();
+        Log::SetGlobalLog(Log::GetDefaultLog());
+
+        if (Allocator::IsTrackingLeaks())
+        {
+            int ovrLeakCount = DumpMemory(); 
+
+            OVR_ASSERT(ovrLeakCount == 0);
+            if (ovrLeakCount == 0)
+            {
+                OVR_DEBUG_LOG(("[System] No OVR object leaks detected."));
+            }
+        }
+    }
+    else
+    {
+        OVR_DEBUG_LOG(("[System] Destroy failed - System not initialized."));
+    }
+}
+
+// Returns 'true' if system was properly initialized.
+bool System::IsInitialized()
+{
+    return Allocator::GetInstance() != nullptr;
+}
+
+
+} // namespace OVR