PxSysInfoGetTaskInfo()

Function to get task info.

APPLIES TO

8.2.0

SYNOPSIS
PxError_t PxSysInfoGetTaskInfo (PxInfoTask_t *TaskInfo, PxTask_t TaskId);
ARGUMENTS






TaskInfo




Pointer to data area to store task information to


















TaskId




Id of task object

















RETURN VALUES






    

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    PXROS error code
    

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ERROR CODES















PXERR_PROT_PERMISSION




The task has no write permission on the TaskInfo object








PXERR_TASK_ILLTASK




The given object is not a task object









DESCRIPTION










PxSysInfoGetTaskInfo stores the contents of the task control block task into the info structure Taskinfo.














The structure TaskInfo has the following format:
















typedef struct PxInfoTask_t
{
	char *PxInfoTask_Name; // task's name
	PxUChar_t  PxInfoTask_Priority; // task's priority
	PxError_t  PxInfoTask_Error; // task's last error code
	PxTmode_t  PxInfoTask_Mode; // Bitmask of task's mode
	PxInfoTaskState_t   PxInfoTask_State; // task's state
	PxEvents_t  PxInfoTask_SavedEvents; // task's saved events
	PxEvents_t  PxInfoTask_EventMask; // events, the task is waiting for
	PxMc_t  PxInfoTask_Mc; // task's default memory class
	PxOpool_t  PxInfoTask_Opool; // task's default object pool
	PxMbx_t  PxInfoTask_PrivateMailbox; // task's private mailbox
	PxInt_t  PxInfoTask_ExtremeStackSize; // task's extreme stack level
	PxInt_t  PxInfoTask_CurrentStackSize; // task's current stack level
	PxInt_t  PxInfoTask_TotalStackSize; // task's total stack size
	PxInt_t  PxInfoTask_AbortStackSize; // task's abort stack size
	PxTask_t  PxInfoTask_Creator; // task's creator task
	PxUInt_t  PxInfoTask_AccessRights; // task's access rights
} PxInfoTask_t;
















The task may be in one of the following states:
















typedef enum
{
	TaskState_Unknown, // unknown state
	TaskState_Ready, // task is ready
	TaskState_Waiting, // task is waiting
	TaskState_Waiting_PxAwaitEvents, // task is waiting for events
	TaskState_Waiting_PxMsgRcv, // task is waiting for a message
	TaskState_Waiting_PxObjReq, // task is requesting an object
	TaskState_Waiting_PxMcTakeBlk, // task is requesting a memory block
	TaskState_Suspended, // task is suspended
	TaskState_Suspended_PxAwaitEvents, // task is suspended while waiting for events
	TaskState_Suspended_PxMsgRcv, // task is suspended while waiting for a message
	TaskState_Suspended_PxObjReq, // task is suspended while requesting an object
	TaskState_Suspended_PxMcTakeBlk, // task is suspended while requesting a memory block
} PxInfoTaskState_t;
















There is a union available containing all sysinfo types:
















typedef union
{
	PxInfoMC_t  McInfo; // memory class information struct
	PxInfoOpool_t  OpoolInfo; // Opool information struct
	PxInfoMsg_t  MsgInfo; // message information struct
	PxInfoMbx_t  MbxInfo; // mailbox information struct
	PxInfoDelay_t  DelayInfo; // delay object information struct
	PxInfoPe_t  PeInfo; // periodic event information struct
	PxInfoTo_t  ToInfo; // timeout object information struct
	PxInfoInterrupt_t  InterruptInfo; // interrupt object information struct
} PxObjInfo_T;
























IMPLEMENTATION GUIDELINES
















Before call






    

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    TaskInfo must be a pointer to a valid data area.
    

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    The parameter TaskId must be a valid task object id. This id may be
    

    

      

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      the calling task’s own id read by calling PxGetId() (V)
      

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      the return value of a PxTaskCreate() call (V)
      

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      the result of a nameserver query (V)
      

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      part of a message sent by another task (V)
      

      • 

    

    

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  • 

    Additionally the task id may be checked with PxTaskCheck() (F).
    

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After call






    

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    The function returns PXERR_NOERROR if the system information could be delivered. Any other return value describes an error, which has to be interpreted (C).
    

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Best Practice






    

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    No restrictions
    

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SEE ALSO











USAGE








#include "pxdef.h"

PxError_t err = PxSysInfoGetTaskInfo(&TaskInfo, taskId);

if (err == PXERR_NOERROR) {
    // Handle info
}
else {
    // Report error
}