1 /*****************************************************************************
2 * RRDtool 1.4.3 Copyright by Tobi Oetiker, 1997-2010
3 *****************************************************************************
4 * rrd_format.c RRD Database Format helper functions
5 *****************************************************************************
8 * Revision 1.5 2004/05/18 18:53:03 oetiker
9 * big spell checking patch -- slif@bellsouth.net
11 * Revision 1.4 2003/02/13 07:05:27 oetiker
12 * Find attached the patch I promised to send to you. Please note that there
13 * are three new source files (src/rrd_is_thread_safe.h, src/rrd_thread_safe.c
14 * and src/rrd_not_thread_safe.c) and the introduction of librrd_th. This
15 * library is identical to librrd, but it contains support code for per-thread
16 * global variables currently used for error information only. This is similar
17 * to how errno per-thread variables are implemented. librrd_th must be linked
18 * alongside of libpthred
20 * There is also a new file "THREADS", holding some documentation.
22 * -- Peter Stamfest <peter@stamfest.at>
24 * Revision 1.3 2002/02/01 20:34:49 oetiker
25 * fixed version number and date/time
27 * Revision 1.2 2001/03/10 23:54:39 oetiker
28 * Support for COMPUTE data sources (CDEF data sources). Removes the RPN
29 * parser and calculator from rrd_graph and puts then in a new file,
30 * rrd_rpncalc.c. Changes to core files rrd_create and rrd_update. Some
31 * clean-up of aberrant behavior stuff, including a bug fix.
32 * Documentation update (rrdcreate.pod, rrdupdate.pod). Change xml format.
33 * -- Jake Brutlag <jakeb@corp.webtv.net>
35 * Revision 1.1.1.1 2001/02/25 22:25:05 oetiker
38 * Revision 1.3 1998/03/08 12:35:11 oetiker
39 * checkpointing things because the current setup seems to work
40 * according to the things said in the manpages
42 * Revision 1.2 1998/02/26 22:58:22 oetiker
45 * Revision 1.1 1998/02/21 16:14:41 oetiker
49 *****************************************************************************/
52 #define converter(VV,VVV) \
53 if (strcmp(#VV, string) == 0) return VVV;
55 /* conversion functions to allow symbolic entry of enumerations */
59 converter(COUNTER, DST_COUNTER)
60 converter(ABSOLUTE, DST_ABSOLUTE)
61 converter(GAUGE, DST_GAUGE)
62 converter(DERIVE, DST_DERIVE)
63 converter(COMPUTE, DST_CDEF)
64 rrd_set_error("unknown data acquisition function '%s'", string);
65 return (enum dst_en)(-1);
73 converter(AVERAGE, CF_AVERAGE)
74 converter(MIN, CF_MINIMUM)
75 converter(MAX, CF_MAXIMUM)
76 converter(LAST, CF_LAST)
77 converter(HWPREDICT, CF_HWPREDICT)
78 converter(MHWPREDICT, CF_MHWPREDICT)
79 converter(DEVPREDICT, CF_DEVPREDICT)
80 converter(SEASONAL, CF_SEASONAL)
81 converter(DEVSEASONAL, CF_DEVSEASONAL)
82 converter(FAILURES, CF_FAILURES)
83 rrd_set_error("unknown consolidation function '%s'", string);
84 return (enum cf_en)(-1);
87 const char *cf_to_string (enum cf_en cf)
91 case CF_AVERAGE: return "AVERAGE";
92 case CF_MINIMUM: return "MIN";
93 case CF_MAXIMUM: return "MAX";
94 case CF_LAST: return "LAST";
95 case CF_HWPREDICT: return "HWPREDICT";
96 case CF_SEASONAL: return "SEASONAL";
97 case CF_DEVPREDICT: return "DEVPREDICT";
98 case CF_DEVSEASONAL: return "DEVSEASONAL";
99 case CF_FAILURES: return "FAILURES";
100 case CF_MHWPREDICT: return "MHWPREDICT";
105 } /* char *cf_to_string */
115 for (i = 0; i < rrd->stat_head->ds_cnt; i++)
116 if ((strcmp(ds_nam, rrd->ds_def[i].ds_nam)) == 0)
118 rrd_set_error("unknown data source name '%s'", ds_nam);
122 off_t rrd_get_header_size(
125 return sizeof(stat_head_t) + \
126 sizeof(ds_def_t) * rrd->stat_head->ds_cnt + \
127 sizeof(rra_def_t) * rrd->stat_head->rra_cnt + \
129 sizeof(live_head_t) + \
130 sizeof(pdp_prep_t) * rrd->stat_head->ds_cnt + \
131 sizeof(cdp_prep_t) * rrd->stat_head->ds_cnt * rrd->stat_head->rra_cnt + \
132 sizeof(rra_ptr_t) * rrd->stat_head->rra_cnt;