opd_extended.c

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#include "opd_extended.h"
#include "op_string.h"

#include <string.h>
#include <stdio.h>

/* This global variable is >= 0
 * if extended feature is enabled */
static int opd_ext_feat_index;

extern struct opd_ext_handlers ibs_handlers;

static struct opd_ext_feature ext_feature_table[] = {
    {"ibs", &ibs_handlers },
    { NULL, NULL }
};


static int get_index_for_feature(char const * name)
{
    int ret = -1;
    unsigned int i;

    if(!name)
        return ret;

    for (i = 0 ; ext_feature_table[i].feature != NULL ; i++ ) {
        if(!strncmp(name, ext_feature_table[i].feature,
            strlen(ext_feature_table[i].feature))) {
            ret = i;
            break;
        }
    }

    return ret;
}


static inline int is_ext_enabled()
{
    if (opd_ext_feat_index >= 0
    && ext_feature_table[opd_ext_feat_index].handlers != NULL)
        return 1;
    else
        return 0;
}


static inline int is_ext_sfile_enabled()
{
    if (opd_ext_feat_index >= 0
    && ext_feature_table[opd_ext_feat_index].handlers != NULL
    && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile != NULL)
        return 1;
    else
        return 0;
}


int opd_ext_initialize(char const * value)
{
    int ret = EXIT_FAILURE;
    char * tmp = NULL, * name = NULL, * args = NULL;

    if(!value) {
        opd_ext_feat_index = -1;
        return 0;
    }

    tmp = op_xstrndup(value, strlen(value));

    /* Parse feature name*/
    if((name = strtok_r(tmp, ":", &args)) == NULL)
        goto err_out;

    if((opd_ext_feat_index = get_index_for_feature(name)) < 0)
        goto err_out;

    ret = ext_feature_table[opd_ext_feat_index].handlers->ext_init(args);

    return ret;

err_out:
    fprintf(stderr,"opd_ext_initialize: Invalid extended feature option: %s\n", value);
    return ret;
}


int opd_ext_deinitialize()
{
    int ret = EXIT_FAILURE;

    if(opd_ext_feat_index == -1) {
        return 0;
    }

    ret = ext_feature_table[opd_ext_feat_index].handlers->ext_deinit();

    return ret;
}


void opd_ext_print_stats()
{
    if (is_ext_enabled()
    && ext_feature_table[opd_ext_feat_index].handlers->ext_print_stats != NULL) {
        printf("\n-- OProfile Extended-Feature Statistics --\n");
        ext_feature_table[opd_ext_feat_index].handlers->ext_print_stats();
    }
}


void opd_ext_sfile_create(struct sfile * sf)
{
    /* Creating ext sfile only if extended feature is enable*/
    if (is_ext_sfile_enabled()
    && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->create != NULL)
        ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->create(sf);
}


void opd_ext_sfile_dup (struct sfile * to, struct sfile * from)
{
    /* Duplicate ext sfile only if extended feature is enable*/
    if (is_ext_sfile_enabled()
    && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->dup != NULL)
        ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->dup(to, from);
}


void opd_ext_sfile_close (struct sfile * sf)
{
    /* Close ext sfile only if extended feature is enable*/
    if (is_ext_sfile_enabled()
    && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->close != NULL)
        ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->close(sf);
}


void opd_ext_sfile_sync(struct sfile * sf)
{
    /* Sync ext sfile only if extended feature is enable*/
    if (is_ext_sfile_enabled()
    && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->sync != NULL)
        ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->sync(sf);
}


odb_t * opd_ext_sfile_get(struct transient const * trans, int is_cg)
{
    /* Get ext sfile only if extended feature is enable*/
    if (is_ext_sfile_enabled()
    && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->get != NULL)
        return  ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->get(trans, is_cg);

    return NULL;
}


struct opd_event * opd_ext_find_counter_event(unsigned long counter)
{
    /* Only if extended feature is enable*/
    if (is_ext_sfile_enabled()
    && ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->find_counter_event != NULL)
        return  ext_feature_table[opd_ext_feat_index].handlers->ext_sfile->find_counter_event(counter);

    return NULL;
}