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This article is about what RTP means in vxworks. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

VxWorks's RTP, whose full name is Real-Time Process, can be translated into real-time processes.

Before 6. 0, VxWorks used the memory space of single, and the operating system was inseparable from the application. This model has better flexibility and performance when developing applications, but it also requires higher requirements for developers, because wrong applications can easily cause other applications or systems to crash. programmers need to ensure that kernel facilities and applications coexist peacefully in the same memory space. For example, if the stack of task T3 overflows, it is possible to destroy the address space of other tasks. If it is system task T1 that is destroyed, it is likely to result in a panic. At this time, T3, may have quit, T1 has become the scapegoat of T3.

Since 6. 0, VxWorks has introduced RTP. This RTP is similar to other operating system processes in many places, such as compatibility with POSIX. So programmers who understand the UNIX/Linux process model will soon be familiar with the creation, execution, or termination of RTP.

However, RTP is specially designed for RTOS, in order to meet the real-time requirements, it is still different from other system processes.

RTP is used to execute the application in user mode. Each process uses a separate address space to protect its own programs, data, stacks, heaps, and other related resources. Multiple processes can exist in a system at the same time, and there can be multiple tasks within each process (similar to threads in other systems).

With RTP, you can execute applications and other functions of the operating system in user mode, which are clearly divided between the kernel and the application. This architecture is often referred to as a process model.

At the same time, 6.x maintains a high degree of compatibility with 5.5. Basically, kernel applications from earlier VxWorks can be migrated to the 6.x kernel space (in most cases, just recompiled) without any modification.

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