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/* -*- linux-c -*-
* map functions to handle integer values
* Copyright (C) 2005 Red Hat Inc.
*
* This file is part of systemtap, and is free software. You can
* redistribute it and/or modify it under the terms of the GNU General
* Public License (GPL); either version 2, or (at your option) any
* later version.
*/
/** @file map-int.c
* @brief Map functions to set and get int64s
*/
void __stp_map_set_int64 (MAP map, int64_t val, int add)
{
struct map_node *m;
if (map == NULL)
return;
if (map->create) {
if (val == 0 && !map->no_wrap)
return;
m = __stp_map_create (map);
if (!m)
return;
/* set the value */
//dbug ("m=%lx offset=%lx\n", (long)m, (long)map->data_offset);
*(int64_t *)((long)m + map->data_offset) = val;
} else {
if (map->key == NULL)
return;
if (val) {
if (add)
*(int64_t *)((long)map->key + map->data_offset) += val;
else
*(int64_t *)((long)map->key + map->data_offset) = val;
} else if (!add) {
/* setting value to 0 is the same as deleting */
_stp_map_key_del(map);
}
}
}
/** Set the current element's value to an int64.
* This sets the current element's value to an int64. The map must have been created
* to hold int64s using <i>_stp_map_new_(xxx, INT64)</i>
*
* If the element doesn't exist, it is created. If no current element (key)
* is set for the map, this function does nothing.
* @param map
* @param val new value
* @sa _stp_map_add_int64()
* @sa _stp_map_set()
* @ingroup map_set
*/
#define _stp_map_set_int64(map,val) __stp_map_set_int64 (map,val,0)
/** Get the value of a map.
* This gets the current element's int64 value. The map must have been created
* to hold int64s using <i>_stp_map_new_(xxx, INT64)</i>
*
* If no current element (key) is set for the map, this function returns 0.
*
* @ingroup map_set
* @param map
* @returns an int64 value.
*/
int64_t _stp_map_get_int64 (MAP map)
{
struct map_node *m;
if (map == NULL || map->create || map->key == NULL)
return 0;
//dbug ("key %lx\n", (long)map->key);
m = (struct map_node *)map->key;
return *(int64_t *)((long)m + map->data_offset);
}
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