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ThreadX Technical FeaturesThreadX is Express Logic's advanced Real-Time Operating System (RTOS) designed specifically for deeply embedded applications. ThreadX has many advanced features, including its picokernel™ architecture, preemption-threshold,™ and a rich set of system services. Combined with its superior ease-of-use, ThreadX is the ideal choice for the most demanding of embedded applications. Small FootprintThreadX is implemented as a C library. Only the features used by the application are brought into the final image. The minimal footprint of ThreadX is as small as 2.5KB on CISC processors. Fast ResponseThreadX helps your application respond to external events faster than ever before. ThreadX is also deterministic. A high priority thread starts responding to an external event on the order of the time it takes to perform a highly optimized ThreadX context switch. Easy To UseThreadX is very easy to use. The ThreadX API is both intuitive and highly functional. In addition, the API names are made of real words and not the “alphabet soup” names that are common to other RTOS products. Building a ThreadX application is also easy. Simply include the TX_API.H file in the application software and link the application objects with the ThreadX library. The resulting image is ready for execution – it’s that simple!
No MysteriesThreadX is delivered with complete C and assembly source code so you can see exactly how ThreadX operates. If you are used to in-house kernels or had bad experiences with “black box” commercial RTOS products, this should be most comforting. Advanced FeaturesThreadX provides an advanced set of services, including:
Preemption-Threshold ™ThreadX’s preemption-threshold technology is a unique addition to the priority based, preemptive scheduling algorithm. Preemption-threshold allows the application to disable preemption over ranges of priorities instead of disabling preemption of the entire system. Applications can take advantage of ThreadX's preemption-threshold to eliminate excessive context switching , un-deterministic priority inversion, and enhance responsiveness. Priority InheritanceAnother tool for battling un-deterministic priority inversion is the priority inheritance feature found in the ThreadX Mutex object. Flexible Memory UtilizationThreadX control blocks and memory areas associated with thread stacks, message queues, and memory pools can be easily located (during run-time) in any address space on your hardware. For example, ThreadX makes it easy to boost the performance of a high-priority thread by placing its stack in a fast memory area. Dynamic CreationThreadX allows you to create system resources dynamically. There are no predetermined limits on the number of ThreadX resources you can use. Furthermore, the number of system objects does not have any impact on performance . Fast Timer ManagementThreadX application timers are available in one-shot or periodic operation. ThreadX manages activation and expiration without linear searching. This greatly reduces the amount of overhead in timer-centric applications like communications and process control. Vast Processor SupportThreadX currently supports most popular CISC, RISC, and DSP processors. Because of its portable design, ThreadX can be ported to an entirely new processor family within four weeks. Both of these facts help ensure your product's migration path. Express Logic Gets You to Market FirstExpress Logic products are designed for ease-of-use. Everything from well thought out APIs to simple startup procedures help you get up and running in a matter of hours! This coupled with advanced debugger integration, make our products the easy choice to win the race to market!
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