NAME

SYNOPSIS

#include <perfmon/pfmlib.h>

int pfm_regmask_isset(pfmlib_regmask_t *mask,  unsigned int b);
int pfm_regmask_set(pfmlib_regmask_t *mask,  unsigned int b);
int pfm_regmask_clr(pfmlib_regmask_t *mask,  unsigned int b);
int pfm_regmask_weight(pfmlib_regmask_t *mask, unsigned int *w);
int pfm_regmask_eq(pfmlib_regmask_t *mask1, pfmlib_regmask_t *mask2);
int pfm_regmask_and(pfmlib_regmask_t *dest, pfmlib_regmask_t *m1, pmlib_regmask_t *m2);
int pfm_regmask_or(pfmlib_regmask_t *dest, pfmlib_regmask_t *m1, pmlib_regmask_t *m2);
int pfm_regmask_copy(pfmlib_regmask_t *dest, pfmlib_regmask_t *src);

DESCRIPTION

This set of function is used to operate of the pfmlib_regmask_t bitmasks that are returned by certain functions or passed to pfm_dispatch_events.

To ensure portability, it is important that applications use only the functions specified here to access te bitmasks. It is strongly discouraged to access the internal fields of the pfm_regmask_t structure.

The pfm_regmask_set function is used to set bit b in the bitmask mask.

The pfm_regmask_clr function is used to clear bit b in the bitmask mask.

The pfm_regmask_isset function returns a non-zero value if b is set in the bitmask mask.

The pfm_regmask_weight function returns in w the number of bits set in the bitmask mask.

The pfm_regmask_eq function returns a non-zero value if the bitmasks mask1 and mask2 are identical.

The pfm_regmask_and function returns in bitmask dest the result of the logical AND operation between bitmask m1 and bitmask m2.

The pfm_regmask_or function returns in bitmask dest the result of the logical OR operation between bitmask m1 and bitmask m2.

The pfm_regmask_copy function copies bitmask src into bitmask dest.

RETURN

ERRORS

• PFMLIB_ERR_INVAL: the bit b exceeds the limit supported by the library

AUTHOR