Comtrol eCos - Manual (Page 476)

Chapter 32. µITRON API
• ter_tsk() : the task must not be dormant, else E_OBJ
• chg_pri() : the task must not be dormant, else E_OBJ
• rel_wai() : the task must be in WAIT or WAIT-SUSPEND state, else E_OBJ
Task-Dependent Synchronization Functions
These functions are fully supported in this release:
ER sus_tsk (
ID tskid )
ER rsm_tsk (
ID tskid )
ER frsm_tsk (
ID tskid )
ER slp_tsk ( void )
ER tslp_tsk (
TMO tmout )
ER wup_tsk (
ID tskid )
ER can_wup (
INT *p_wupcnt, ID tskid )
Error checking
The following conditions are only checked for, and only return errors if
CYGSEM_UITRON_BAD_PARAMS_RETURN_ERRORS is enabled (see the configuration option
“Return Error Codes for Bad Params”):
• invalid tskid; less than 1 or greater than CYGNUM_UITRON_TASKS returns E_ID
• wup_tsk() , sus_tsk() , rsm_tsk() , frsm_tsk() on the calling task returns E_OBJ
• dispatching is enabled in tslp_tsk() and slp_tsk() , or E_CTX
• tmout must be positive, otherwise E_PAR
• return value pointer in can_wup() is a valid pointer, or E_PAR
The following conditions are checked for, and can return error codes, regardless of the setting of
CYGSEM_UITRON_BAD_PARAMS_RETURN_ERRORS :
• When create and delete functions cre_tsk() and del_tsk() are supported, all calls which use a valid task ID
number check that the task exists; if not, E_NOEXS is returned
• sus_tsk() : the task must not be dormant, else E_OBJ
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