RTOS Task Local Variables

[vijay s]

Hi Folks

Need little Clarification in Task Local Variables.. i know each Task has its own Stack, used to store context during task switch. what about its local variables, will that be allocated in System Task or in its own stack.

if allocated in local stack, can you folks explain in detail how its managed by Task....

 

[bigdogguru]

The variables of a task and its reentrant routines when interrupted are pushed on the global stack, thereby creating private data for task and its reentrant routines. Nonreentrant code must by synchronized by some method such as a semaphore.

BigDog

 

[navenmou]

Each task that is created will consume memory and this usually has to be defined when the task is created. The task’s stack is used to store all of its local variables, function parameters, return addresses and a copy of the processor registers when the tasks is ‘swapped out’. Each task has the individual stack, on that the local variables are stored.