Measuring Real-Time Performance Of An RTOS - Express Logic

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• tm_porting_layer.c – contains shells of the generic RTOS services used by each of the actual tests – The shells provide the mapping between the tests and the underlying RTOS – Must be adapted for specific RTOS – ThreadX adaptation source provided as example /* This function sends a 16-byte message to the specified queue. If successful, the function should return TM_SUCCESS. Otherwise, TM_ERROR should be returned. */ int tm_queue_send (int queue_id, unsigned long *message_ptr) { UINT status; } RTOS Adaptation Layer /* Send the 16-byte message to the specified queue. */ status = tx_queue_send(&tm_queue_array[queue_id], message_ptr, TX_NO_WAIT); /* Determine if the queue send was successful. */ if (status == TX_SUCCESS) return(TM_SUCCESS); else return(TM_ERROR); 16
Test Environment • ARM Versatile Board, ARM926 Processor, 200MHz • 10ms Timer • No Caching • ARM RealView Compiler NO-OPT • Express Logic’s ThreadX ® RTOS 17
Page 1 and 2: Express Logic, Inc. © 2006, Expres
Page 3 and 4: Most Important RTOS Capabilities
Page 5 and 6: Thread-Metric: An Open RTOS Benchma
Page 7 and 8: How Are Services Measured? • Lots
Page 9 and 10: Cooperative Context Switching • T
Page 11 and 12: Interrupt Handling • Must conside
Page 13 and 14: Message Processing • A Thread sen
Page 15: Memory Allocation • Applications
Page 19 and 20: How To Get The Code • Download fr

Measuring Real-Time Performance Of An RTOS - Express Logic

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