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Technical Reference: Base Operating System and Extensions , Volume 2

SpmiNextCx Subroutine


Locates the next subcontext of a context.


SPMI Library (libSpmi.a)


#include sys/Spmidef.h

struct SpmiCxLink *SpmiNextCx(CxLink )struct SpmiCxLink *CxLink;


The SpmiNextCx subroutine locates the next subcontext of a context, taking the context identified by the CxLink parameter as the current subcontext. The subroutine returns a NULL value if no further subcontexts are found.

The structure pointed to by the returned pointer contains an SpmiCxHdl handle to access the contents of the corresponding SpmiCx structure through the SpmiGetCx subroutine call.



Specifies a pointer to a valid SpmiCxLink structure as obtained by a previous SpmiFirstCx subroutine.

Return Values

The SpmiNextCx subroutine returns a pointer to a structure of type SpmiCxLink if successful. If unsuccessful, the subroutine returns a NULL value.

Error Codes

All SPMI subroutines use external variables to provide error information. To access these variables, an application program must define the following external variables:

If the subroutine returns without an error, the SpmiErrno variable is set to 0 and the SpmiErrmsg character array is empty. If an error is detected, the SpmiErrno variable returns an error code, as defined in the sys/Spmidef.h file, and the SpmiErrmsg variable contains text, in English, explaining the cause of the error. See the List of SPMI Error Codes for more information.

Implementation Specifics

This subroutine is part of the server option of the Performance Aide for AIX licensed product and is also included in the Performance Toolbox for AIX licensed product.


/usr/include/sys/Spmidef.h Declares the subroutines, data structures, handles, and macros that an application program can use to access the SPMI.

Related Information

For related information, see:

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