Description
Returns the current value of a task’s TLS (thread-local storage) stored in the task’s p_tcb->TLS_Tbl[id]. See Chapter 20, “Thread Safety of the Compiler’s Run-Time Library” for details on TLS.
Files
os.h/os_tls.c
Prototype
Arguments
p_tcb
is a pointer to the OS_TCB of the task you wish to retrieve the TLS from. You will get a copy of the p_tcb->TLS_Tbl[id] entry and of course, the entry will not be changed.
...
If you called OS_TLS_GetValue() but the task was created with the option OS_OPT_TASK_NO_TLS indicating that the task does not need TLS support.
Returned Value
The value store in p_tcb->TLS_Tbl[id] or NULL if an error occurred.
Required Configuration
OS_CFG_TLS_TBL_SIZE must be higher than 0 in os_cfg.h. Refer to uC-OS-III Configuration Manual
Callers
Application.
Notes/Warnings
- You cannot call
OS_TLS_GetValue()for a task until that task gets created.