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PAPI_library_init(3) PAPI PAPI_library_init(3)


PAPI_library_init -

initialize the PAPI library.


Detailed Description

@param version 

upon initialization, PAPI checks the argument against the internal
value of PAPI_VER_CURRENT when the library was compiled.
This guards against portability problems when updating the PAPI shared
libraries on your system. @retval PAPI_EINVAL
papi.h is different from the version used to compile the PAPI library. @retval PAPI_ENOMEM
Insufficient memory to complete the operation. @retval PAPI_ECMP
This component does not support the underlying hardware. @retval PAPI_ESYS
A system or C library call failed inside PAPI, see the errno variable. PAPI_library_init() initializes the PAPI library. PAPI_is_initialized() check for initialization. It must be called before any low level PAPI functions can be used. If your application is making use of threads PAPI_thread_init must also be called prior to making any calls to the library other than PAPI_library_init() . @par Examples:

*       int retval;
*       retval = PAPI_library_init(PAPI_VER_CURRENT);
*       if (retval != PAPI_VER_CURRENT && retval > 0) {
*           fprintf(stderr,"PAPI library version mismatch!\n");
*           exit(1); }
*       if (retval < 0)
*           handle_error(retval);
*       retval = PAPI_is_initialized();
*       if (retval != PAPI_LOW_LEVEL_INITED)
*           handle_error(retval)    

See Also:

PAPI_thread_init PAPI


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Thu Feb 27 2020 Version