* Don't sleep for negative amounts (overflows to very large sleep delays :-)

[matthijs/ABM2.git] / ABM2 / Engine / Kernel.cpp

diff --git a/ABM2/Engine/Kernel.cpp b/ABM2/Engine/Kernel.cpp
index 42e112bc7f52653f576b32e758c8d68c9ebdcea1..35d4afce603cc425a1fe83b2275477380459315b 100755 (executable)
--- a/ABM2/Engine/Kernel.cpp
+++ b/ABM2/Engine/Kernel.cpp
@@ -27,19 +27,22 @@ int CKernel::Execute()
 {\r
 #ifdef WIN32\r
     MSG msg;\r
+#endif // WIN32\r
 \r
        while(taskList.size())\r
        {\r
                {\r
                        PROFILE("Kernel task loop");\r
 \r
-                       //DWORD starting_point = GetTickCount();\r
+                       DWORD starting_point = GetTickCount();\r
 \r
+#ifdef WIN32\r
         if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))\r
         {\r
             TranslateMessage(&msg);\r
             DispatchMessage(&msg);\r
         }\r
+#endif // WIN32\r
 \r
 \r
                        std::list< CMMPointer<ITask> >::iterator it, thisIt;\r
@@ -63,19 +66,20 @@ int CKernel::Execute()
                                }\r
                        }\r
                        IMMObject::CollectGarbage();\r
-                       //DWORD end_point = GetTickCount();\r
-//                     Sleep(50 - (end_point-starting_point));\r
+                       DWORD end_point = GetTickCount();\r
+                       /* Sleep if we didn't use up too much time already */\r
+                       if (starting_point + 50 > end_point)\r
+                               Sleep(50 - (end_point-starting_point));\r
                }\r
 #ifdef _DEBUG\r
                CProfileSample::Output();\r
 #endif\r
        }\r
-#endif // WIN32\r
 \r
        return 0;\r
 }\r
 \r
-bool CKernel::AddTask(CMMPointer<ITask> t)\r
+bool CKernel::AddTask(const CMMPointer<ITask> &t)\r
 {\r
        if(!t->Start())return false;\r
 \r
@@ -90,7 +94,7 @@ bool CKernel::AddTask(CMMPointer<ITask> t)
        return true;\r
 }\r
 \r
-void CKernel::SuspendTask(CMMPointer<ITask> t)\r
+void CKernel::SuspendTask(const CMMPointer<ITask> &t)\r
 {\r
        //check that this task is in our list - we don't want to suspend a task that isn't running\r
        if(std::find(taskList.begin(),taskList.end(),t)!=taskList.end())\r
@@ -101,7 +105,7 @@ void CKernel::SuspendTask(CMMPointer<ITask> t)
        }\r
 }\r
 \r
-void CKernel::ResumeTask(CMMPointer<ITask> t)\r
+void CKernel::ResumeTask(const CMMPointer<ITask> &t)\r
 {\r
        if(std::find(pausedTaskList.begin(),pausedTaskList.end(),t)!=pausedTaskList.end())\r
        {\r
@@ -118,7 +122,7 @@ void CKernel::ResumeTask(CMMPointer<ITask> t)
        }\r
 }\r
 \r
-void CKernel::RemoveTask(CMMPointer<ITask> t)\r
+void CKernel::RemoveTask(const CMMPointer<ITask> &t)\r
 {\r
        if(std::find(taskList.begin(),taskList.end(),t)!=taskList.end())\r
        {\r