1LIBPFM(3)                  Linux Programmer's Manual                 LIBPFM(3)
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NAME

6       pfm_strerror - return constant string describing error code
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SYNOPSIS

9       #include <perfmon/pfmlib.h>
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11       const char *pfm_strerror(int code);
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DESCRIPTION

15       This  function  returns a string which describes the libpfm error value
16       in code. The string returned by the call is read-only.
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18       The function must only be used with libpfm calls documented  to  return
19       specific  error  codes. The value -1 is not considered a specific error
20       code.  Strings and pfm_pmu_t return values cannot  be  used  with  this
21       function.   Typically NULL is returned in case of error for string val‐
22       ues, and PFM_PMU_NONE is returned for pfm_pmu_t values.
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24       The function is also not designed to  handle  OS  system  call  errors,
25       i.e., errno values.
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RETURN

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

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

38       Stephane Eranian <eranian@gmail.com>
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40                                September, 2009                      LIBPFM(3)