вернуть постоянную строку, описывающую код ошибки (return constant string describing error code)
Имя (Name)
pfm_strerror - return constant string describing error code
Синопсис (Synopsis)
#include <perfmon/pfmlib.h>
const char *pfm_strerror(int code);
Описание (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.
Возврат (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.
Ошибки (Error)
If the error code is invalid, then the function returns a pointer
to a string which says "unknown error code".
