Method and system for providing stack memory management in real-time operating systems

摘要

A method and system for providing memory management in a Real-Time Operating System (RTOS) based system are provided. The method includes creating a plurality of tasks with a two level stack scheme comprising a first level stack and a second level stack, scheduling a first task for execution by moving a stack pointer from the first level stack to the second level stack, determining whether the first task is pre-empted, allocating the second level stack to the first task in a second state if the first task is not pre-empted, changing an active task for execution, determining whether the first task relinquishes control from the second state and is waiting for a resource, moving the stack pointer back from the second level stack to the first level stack if the first task relinquishes itself and providing the second level stack for use by a second task.

主权项

1. A method of providing memory management in a Real-Time Operating System (RTOS) based system, the method comprising:
creating, by a task generator, a plurality of tasks with a two level stack scheme including a first-level stack and a second-level stack; scheduling, by a task scheduler, a first task for execution by moving a stack pointer from the first-level stack to the second-level stack; determining whether the first task is pre-empted; allocating the second-level stack to the first task in a second state if the first task is not pre-empted; changing, by the task scheduler, an active task for execution; determining whether the first task relinquishes control from the second state and is waiting for a resource; moving the stack pointer back from the second-level stack to the first-level stack if the first task relinquishes itself; and providing the second-level stack for use by a second task.