pfmlib_priv.c

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/*
 * pfmlib_priv.c: set of internal utility functions for all architectures
 *
 * Copyright (c) 2006 Hewlett-Packard Development Company, L.P.
 * Contributed by Stephane Eranian <eranian@hpl.hp.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#include <sys/types.h>
#include <ctype.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <limits.h>
 
#include <perfmon/pfmlib.h>
 
#include "pfmlib_priv.h"
 
/*
 * file for all libpfm verbose and debug output
 *
 * By default, it is set to stderr, unless the
 * PFMLIB_DEBUG_STDOUT environment variable is set
 */
FILE *libpfm_fp;
 
/*
 * by convention all internal utility function must be prefixed by __
 */
 
/*
 * debug printf
 */
void
__pfm_vbprintf(const char *fmt, ...)
{
    va_list ap;
 
    if (pfm_config.options.pfm_verbose == 0)
        return;
 
    va_start(ap, fmt);
    vfprintf(libpfm_fp, fmt, ap);
    va_end(ap);
}
 
int
__pfm_check_event(pfmlib_event_t *e)
{
    unsigned int n, j;
 
    if (e->event >= pfm_current->pme_count)
        return PFMLIB_ERR_INVAL;
 
    n = pfm_num_masks(e->event);
    if (n == 0 && e->num_masks)
        return PFMLIB_ERR_UMASK;
 
    for(j=0; j < e->num_masks; j++) {
        if (e->unit_masks[j] >= n)
            return PFMLIB_ERR_UMASK;
    }
    /*
     * if event has umask, but non specified by user, then
     * return:
     *   - error if no default umask is defined
     *   - success if default umask exists for event
     */
    if (n && j == 0) {
        if (pfm_current->has_umask_default
            && pfm_current->has_umask_default(e->event))
            return PFMLIB_SUCCESS;
        return PFMLIB_ERR_UMASK;
    }
    return PFMLIB_SUCCESS;
}