PxMcReturnBlk()

Return a block to the memory class.

APPLIES TO

8.2.0

SYNOPSIS
PxError_t PxMcReturnBlk (PxMc_t mcid, PxMptr_t blk);
ARGUMENTS






mcid




The memory class handle, the block is returned to


















blk




The block to be returned

















RETURN VALUES






    

  • 

    PXROS error code
    

    • 







ERROR CODES















PXERR_GLOBAL_ILLEGAL_CORE




The requested memory class is not on the same core








PXERR_MC_DAMAGED_BLOCK




The block is damaged








PXERR_MC_ILLMC




mcid is not a valid memory class








PXERR_MC_NOT_ALLOCATED




The block is not allocated








PXERR_MC_NOT_ALLOCATED_FROM




Block not taken from the memory class








PXERR_MC_INCONSISTENCY




Inconsistency in memory class: blk








PXERR_MC_ILLALIGN




Invalid memory block or size alignment in memory insert








PXERR_MC_ILLSIZE




Insufficient block size








PXERR_MC_NOMEM




Not enough memory in the memory class to satisfy the request








PXERR_INIT_ILLMCTYPE




The type for PXMcSystemdefault is different from PXMcVarsized and PXMcVarsizedAdjusted









DESCRIPTION










PxMcReturnBlk returns block blk to mcid. blk is set to zero. blk must have been gotten by a PxMcTakeBlk call from the same memory class as it is returned to.






















IMPLEMENTATION GUIDELINES
















Before call






    

  • 

    mcid must be:
    

    

      

    • 

      a valid PXROS-HR memory class created with a PxMcRequest call (V). The validity of mcid may also be checked by the PxMcIsValid macro (F).
      

      • 

    • 

      the symbolic value PXMcSystemdefault specifying the system memory class (V)
      

      • 

    • 

      the symbolic value PXMcTaskdefault specifying the task’s memory class (V)
      

      • 

    

    

    • 

  • 

    The memory class must be created on the same core as the caller runs on. The creator core id can be read with the macro PxMcCoreId and the own core id with PxGetCoreId (C).
    

    • 

  • 

    blk must be the start of a memory block taken by PxMcTakeBlk from the memory class mcid.
    

    • 



















After call






    

  • 

    The function returns PXERR_NOERROR if the memory block has been returned to the memory class. Any other return value describes an error, which has to be interpreted. (C)
    

    • 



















Best Practice






    

  • 

    After PxMcReturnBlk, the given memory block blk is no longer valid and may never be used as a memory block!
    

    • 






























SEE ALSO











USAGE








#include "pxdef.h"

PxError_t Err = PxMcReturnBlk(mcid, blk)

if (Err != PXERR_NOERROR) {
    // Report error
}