NAME

       pfm_strerror - return constant string describing error code

SYNOPSIS

       #include <perfmon/pfmlib.h>

       const char *pfm_strerror(int code);

DESCRIPTION

       This function returns a string which describes the libpfm error value in code. The string returned by the
       call is read-only.

       The function must only be used with libpfm calls documented to return specific error codes. The value  -1
       is  not  considered  a specific error code.  Strings and pfm_pmu_t return values cannot be used with this
       function.  Typically NULL is returned in case of error for string values, and  PFM_PMU_NONE  is  returned
       for pfm_pmu_t values.

       The function is also not designed to handle OS system call errors, i.e., errno values.

RETURN

       The  function  returns  a  pointer  to  the  constant  string describing the error code. The string is in
       English. If code is invalid then a default error message is returned.

ERRORS

       If the error code is invalid, then the function returns a pointer to a string which says  "unknown  error
       code".

AUTHOR

       Stephane Eranian <eranian@gmail.com>

                                                 September, 2009                                       LIBPFM(3)