在 <env>OSFactory 类定义中,必须定义一个用于创建应用程序需要的操作系统服务的虚拟操作集合。这些服务包括任务分配、同步、连接端口、消息队列和计时服务。
public:
virtual OMOSMessageQueue *createOMOSMessageQueue(
OMBoolean /* shouldGrow */ = TRUE,
const long messageQueueSize =
OMOSThread::DefaultMessageQueueSize)
{ return (OMOSMessageQueue*)new
VxOSMessageQueue(messageQueueSize);}
virtual OMOSConnectionPort *createOMOSConnectionPort()
{
#ifdef _OMINSTRUMENT
return (OMOSConnectionPort*)new VxConnectionPort();
#else
return NULL;
#endif
}
virtual OMOSEventFlag* createOMOSEventFlag() {
return (OMOSEventFlag *)new VxOSEventFlag(); }
virtual OMOSThread *createOMOSThread(void tfunc(
void*), void *param,
const char* const threadName = NULL,
const long stackSize=OMOSThread::DefaultStackSize)
{return (OMOSThread*)new VxThread(tfunc, param,
threadName, stackSize);};
virtual OMOSThread* createOMOSWrapperThread(
void* osHandle) {
if (NULL == osHandle)
osHandle = getCurrentThreadHandle();
return (OMOSThread*)new VxThread(osHandle);
}
virtual OMOSMutex *createOMOSMutex() {return
(OMOSMutex*)new VxMutex();}
virtual OMOSTimer *createOMOSTickTimer(timeUnit tim,
void cbkfunc(void*), void *param) {
return (OMOSTimer*)new VxTimer(tim, cbkfunc,
param); // TickTimer for real time
}
virtual OMOSTimer *createOMOSIdleTimer(
void cbkfunc(void*), void *param) {
return (OMOSTimer*)new VxTimer(cbkfunc, param);
/ Idle timer for simulated time
}
virtual OMOSSemaphore* createOMOSSemaphore(
unsigned long semFlags = 0,
unsigned long initialCount = 1,
unsigned long /* maxCount */ = 1,
const char * const /* name */ = NULL)
{
return (OMOSSemaphore*) new VxSemaphore(
semFlags, initialCount);
}
virtual void* getCurrentThreadHandle();
virtual void delayCurrentThread(timeUnit ms);
virtual OMBoolean waitOnThread(void* osHandle,
timeUnit ms) {return FALSE;
}
};