papi_perror(3) [centos man page]

PAPI_perror(3)							       PAPI							    PAPI_perror(3)

NAME

       PAPI_perror -

       Produces a string on standard error, describing the last library error.

SYNOPSIS

Detailed Description
       C Interface:
	   #include <papi.h>
	    void PAPI_perror( char *s );

       Parameters:
	   s -- Optional message to print before the string describing the last error message.

       The routine PAPI_perror() produces a message on the standard error output, describing the last error encountered during a call to PAPI. If
       s is not NULL, s is printed, followed by a colon and a space. Then the error message and a new-line are printed.

       Example:

	   *  int ret;
	   *  int EventSet = PAPI_NULL;
	   *  int native = 0x0;
	   *
	   *  ret = PAPI_create_eventset(&EventSet);
	   *  if (ret != PAPI_OK)
	   *  {
	   *	 fprintf(stderr,
	   *	 exit(1);
	   *  }
	   *  // Add Total Instructions Executed to our EventSet
	   *  ret = PAPI_add_event(EventSet, PAPI_TOT_INS);
	   *  if (ret != PAPI_OK)
	   *  {
	   *	 PAPI_perror( "PAPI_add_event" );
	   *	 exit(1);
	   *  }
	   *  // Start counting
	   *  ret = PAPI_start(EventSet);
	   *  if (ret != PAPI_OK) handle_error(ret);
	   *

       See Also:
	   PAPI_strerror

Author
       Generated automatically by Doxygen for PAPI from the source code.

Version 5.2.0.0 						  Tue Jun 17 2014						    PAPI_perror(3)

PAPI_stop(3)							       PAPI							      PAPI_stop(3)

NAME

       PAPI_stop -

       Stop counting hardware events in an event set.

SYNOPSIS

Detailed Description
       C Interface:
	   #include <papi.h>
	    int PAPI_stop( int	EventSet, long long * values );

       Parameters:
	   EventSet -- an integer handle for a PAPI event set as created by PAPI_create_eventset
	   values -- an array to hold the counter values of the counting events

       Return values:
	   PAPI_OK
	   PAPI_EINVAL One or more of the arguments is invalid.
	   PAPI_ESYS A system or C library call failed inside PAPI, see the errno variable.
	   PAPI_ENOEVST The EventSet specified does not exist.
	   PAPI_ENOTRUN The EventSet is currently not running.

       PAPI_stop halts the counting of a previously defined event set and the counter values contained in that EventSet are copied into the values
       array Assumes an initialized PAPI library and a properly added event set.

       Example:

	   *  int EventSet = PAPI_NULL;
	   *  long long values[2];
	   *  int ret;
	   *
	   *  ret = PAPI_create_eventset(&EventSet);
	   *  if (ret != PAPI_OK) handle_error(ret);
	   *
	   *  // Add Total Instructions Executed to our EventSet
	   *  ret = PAPI_add_event(EventSet, PAPI_TOT_INS);
	   *  if (ret != PAPI_OK) handle_error(ret);
	   *
	   *  // Start counting
	   *  ret = PAPI_start(EventSet);
	   *  if (ret != PAPI_OK) handle_error(ret);
	   *  poorly_tuned_function();
	   *  ret = PAPI_stop(EventSet, values);
	   *  if (ret != PAPI_OK) handle_error(ret);
	   *  printf("%lld
",values[0]);
	   *

       See Also:
	   PAPI_create_eventset PAPI_start

Author
       Generated automatically by Doxygen for PAPI from the source code.

Version 5.2.0.0 						  Tue Jun 17 2014						      PAPI_stop(3)