/*****************************************************************************
* RRDtool 1.2.30 Copyright by Tobi Oetiker, 1997-2009
*****************************************************************************
* rrdlib.h Public header file for librrd
*****************************************************************************
* $Id: rrd.h 1735 2009-01-19 14:29:11Z oetiker $
* $Log$
* Revision 1.9 2005/02/13 16:13:33 oetiker
* let rrd_graph return the actual value range it picked ...
* -- Henrik Stoerner <henrik@hswn.dk>
*
* Revision 1.8 2004/05/26 22:11:12 oetiker
* reduce compiler warnings. Many small fixes. -- Mike Slifcak <slif@bellsouth.net>
*
* Revision 1.7 2003/11/12 22:14:26 oetiker
* allow to pass an open filehandle into rrd_graph as an extra argument
*
* Revision 1.6 2003/11/11 19:46:21 oetiker
* replaced time_value with rrd_time_value as MacOS X introduced a struct of that name in their standard headers
*
* Revision 1.5 2003/04/25 18:35:08 jake
* Alternate update interface, updatev. Returns info about CDPs written to disk as result of update. Output format is similar to rrd_info, a hash of key-values.
*
* Revision 1.4 2003/04/01 22:52:23 jake
* Fix Win32 build. VC++ 6.0 and 7.0 now use the thread-safe code.
*
* Revision 1.3 2003/02/13 07:05:27 oetiker
* Find attached the patch I promised to send to you. Please note that there
* are three new source files (src/rrd_is_thread_safe.h, src/rrd_thread_safe.c
* and src/rrd_not_thread_safe.c) and the introduction of librrd_th. This
* library is identical to librrd, but it contains support code for per-thread
* global variables currently used for error information only. This is similar
* to how errno per-thread variables are implemented. librrd_th must be linked
* alongside of libpthred
*
* There is also a new file "THREADS", holding some documentation.
*
* -- Peter Stamfest <peter@stamfest.at>
*
* Revision 1.2 2002/05/07 21:58:32 oetiker
* new command rrdtool xport integrated
* -- Wolfgang Schrimm <Wolfgang.Schrimm@urz.uni-heidelberg.de>
*
* Revision 1.1.1.1 2001/02/25 22:25:05 oetiker
* checkin
*
*****************************************************************************/
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _RRDLIB_H
#define _RRDLIB_H
#include <time.h>
#include <stdio.h> /* for FILE */
/* Transplanted from rrd_format.h */
typedef double rrd_value_t; /* the data storage type is
* double */
/* END rrd_format.h */
/* main function blocks */
int rrd_create(int, char **);
int rrd_update(int, char **);
int rrd_graph(int, char **, char ***, int *, int *, FILE *, double *, double *);
int rrd_fetch(int, char **, time_t *, time_t *, unsigned long *,
unsigned long *, char ***, rrd_value_t **);
int rrd_restore(int, char **);
int rrd_dump(int, char **);
int rrd_tune(int, char **);
time_t rrd_last(int, char **);
time_t rrd_first(int, char **);
int rrd_resize(int, char **);
char * rrd_strversion(void);
double rrd_version(void);
int rrd_xport(int, char **, int *, time_t *, time_t *,
unsigned long *, unsigned long *,
char ***, rrd_value_t **);
/* thread-safe (hopefully) */
int rrd_create_r(const char *filename,
unsigned long pdp_step, time_t last_up,
int argc, const char **argv);
/* NOTE: rrd_update_r are only thread-safe if no at-style time
specifications get used!!! */
int rrd_update_r(const char *filename, const char *_template,
int argc, const char **argv);
int rrd_fetch_r(const char *filename, const char* cf,
time_t *start, time_t *end,
unsigned long *step,
unsigned long *ds_cnt,
char ***ds_namv,
rrd_value_t **data);
int rrd_dump_r(const char *filename, char *outname);
time_t rrd_last_r(const char *filename);
time_t rrd_first_r(const char *filename, int rraindex);
/* Transplanted from parsetime.h */
typedef enum {
ABSOLUTE_TIME,
RELATIVE_TO_START_TIME,
RELATIVE_TO_END_TIME
} timetype;
#define TIME_OK NULL
struct rrd_time_value {
timetype type;
long offset;
struct tm tm;
};
char *parsetime(const char *spec, struct rrd_time_value *ptv);
/* END parsetime.h */
struct rrd_context {
int len;
int errlen;
char *lib_errstr;
char *rrd_error;
};
/* returns the current per-thread rrd_context */
struct rrd_context *rrd_get_context(void);
int proc_start_end (struct rrd_time_value *, struct rrd_time_value *, time_t *, time_t *);
/* HELPER FUNCTIONS */
void rrd_set_error(char *,...);
void rrd_clear_error(void);
int rrd_test_error(void);
char *rrd_get_error(void);
/** MULTITHREADED HELPER FUNCTIONS */
struct rrd_context *rrd_new_context(void);
void rrd_free_context (struct rrd_context *buf);
/* void rrd_set_error_r (struct rrd_context *, char *, ...); */
/* void rrd_clear_error_r(struct rrd_context *); */
/* int rrd_test_error_r (struct rrd_context *); */
/* char *rrd_get_error_r (struct rrd_context *); */
int LockRRD(FILE *);
#endif /* _RRDLIB_H */
#ifdef __cplusplus
}
#endif
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