/*****************************************************************************
- * RRDtool 1.1.x Copyright Tobias Oetiker, 1997 - 2002
+ * RRDtool 1.2rc3 Copyright by Tobi Oetiker, 1997-2005
*****************************************************************************
* rrd_update.c RRD Update Function
*****************************************************************************
* $Id$
- * $Log$
- * Revision 1.11 2003/09/02 21:58:35 oetiker
- * be pickier about what we accept in rrd_update. Complain if things do not work out
- *
- * Revision 1.10 2003/04/29 19:14:12 jake
- * Change updatev RRA return from index_number to cf_nam, pdp_cnt.
- * Also revert accidental addition of -I to aclocal MakeMakefile.
- *
- * Revision 1.9 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 1.8 2003/03/31 21:22:12 oetiker
- * enables RRDtool updates with microsecond or in case of windows millisecond
- * precision. This is needed to reduce time measurement error when archive step
- * is small. (<30s) -- Sasha Mikheev <sasha@avalon-net.co.il>
- *
- * Revision 1.7 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 1.6 2002/02/01 20:34:49 oetiker
- * fixed version number and date/time
- *
- * Revision 1.5 2001/05/09 05:31:01 oetiker
- * Bug fix: when update of multiple PDP/CDP RRAs coincided
- * with interpolation of multiple PDPs an incorrect value was
- * stored as the CDP. Especially evident for GAUGE data sources.
- * Minor changes to rrdcreate.pod. -- Jake Brutlag <jakeb@corp.webtv.net>
- *
- * Revision 1.4 2001/03/10 23:54:41 oetiker
- * Support for COMPUTE data sources (CDEF data sources). Removes the RPN
- * parser and calculator from rrd_graph and puts then in a new file,
- * rrd_rpncalc.c. Changes to core files rrd_create and rrd_update. Some
- * clean-up of aberrant behavior stuff, including a bug fix.
- * Documentation update (rrdcreate.pod, rrdupdate.pod). Change xml format.
- * -- Jake Brutlag <jakeb@corp.webtv.net>
- *
- * Revision 1.3 2001/03/04 13:01:55 oetiker
- * Aberrant Behavior Detection support. A brief overview added to rrdtool.pod.
- * Major updates to rrd_update.c, rrd_create.c. Minor update to other core files.
- * This is backwards compatible! But new files using the Aberrant stuff are not readable
- * by old rrdtool versions. See http://cricket.sourceforge.net/aberrant/rrd_hw.htm
- * -- Jake Brutlag <jakeb@corp.webtv.net>
- *
- * Revision 1.2 2001/03/04 11:14:25 oetiker
- * added at-style-time@value:value syntax to rrd_update
- * -- Dave Bodenstab <imdave@mcs.net>
- *
- * Revision 1.1.1.1 2001/02/25 22:25:06 oetiker
- * checkin
- *
*****************************************************************************/
#include "rrd_tool.h"
#include <sys/types.h>
#include <fcntl.h>
+#ifdef HAVE_MMAP
+ #include <sys/mman.h>
+#endif
-#ifdef WIN32
+#if defined(WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
#include <sys/locking.h>
#include <sys/stat.h>
#include <io.h>
#include "rrd_is_thread_safe.h"
-#ifdef WIN32
+#if defined(WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
/*
* WIN32 does not have gettimeofday and struct timeval. This is a quick and dirty
* replacement.
/* Local prototypes */
int LockRRD(FILE *rrd_file);
+#ifdef HAVE_MMAP
+info_t *write_RRA_row (rrd_t *rrd, unsigned long rra_idx,
+ unsigned long *rra_current,
+ unsigned short CDP_scratch_idx, FILE *rrd_file,
+ info_t *pcdp_summary, time_t *rra_time, void *rrd_mmaped_file);
+#else
info_t *write_RRA_row (rrd_t *rrd, unsigned long rra_idx,
unsigned long *rra_current,
unsigned short CDP_scratch_idx, FILE *rrd_file,
info_t *pcdp_summary, time_t *rra_time);
+#endif
int rrd_update_r(char *filename, char *template, int argc, char **argv);
int _rrd_update(char *filename, char *template, int argc, char **argv,
info_t*);
main(int argc, char **argv){
rrd_update(argc,argv);
if (rrd_test_error()) {
- printf("RRDtool 1.1.x Copyright 1997-2000 by Tobias Oetiker <tobi@oetiker.ch>\n\n"
+ printf("RRDtool 1.2rc3 Copyright by Tobi Oetiker, 1997-2005\n\n"
"Usage: rrdupdate filename\n"
"\t\t\t[--template|-t ds-name:ds-name:...]\n"
"\t\t\ttime|N:value[:value...]\n\n"
rpnstack_t rpnstack; /* used for COMPUTE DS */
int version; /* rrd version */
char *endptr; /* used in the conversion */
+#ifdef HAVE_MMAP
+ void *rrd_mmaped_file;
+ unsigned long rrd_filesize;
+#endif
rpnstack_init(&rpnstack);
followed by output without an intervening call to a file
positioning function, unless the input oepration encounters
end-of-file. */
+#ifdef HAVE_MMAP
+ fseek(rrd_file, 0, SEEK_END);
+ rrd_filesize = ftell(rrd_file);
+ fseek(rrd_file, rra_current, SEEK_SET);
+#else
fseek(rrd_file, 0, SEEK_CUR);
+#endif
/* get exclusive lock to whole file.
return(-1);
}
+#ifdef HAVE_MMAP
+ rrd_mmaped_file = mmap(0,
+ rrd_filesize,
+ PROT_READ | PROT_WRITE,
+ MAP_SHARED,
+ fileno(rrd_file),
+ 0);
+ if (rrd_mmaped_file == MAP_FAILED) {
+ rrd_set_error("error mmapping file %s", filename);
+ free(updvals);
+ free(pdp_temp);
+ free(tmpl_idx);
+ rrd_free(&rrd);
+ fclose(rrd_file);
+ return(-1);
+ }
+#endif
/* loop through the arguments. */
for(arg_i=0; arg_i<argc;arg_i++) {
char *stepper = malloc((strlen(argv[arg_i])+1)*sizeof(char));
char *p;
char *parsetime_error = NULL;
enum {atstyle, normal} timesyntax;
- struct time_value ds_tv;
+ struct rrd_time_value ds_tv;
if (stepper == NULL){
rrd_set_error("failed duplication argv entry");
free(updvals);
free(pdp_temp);
free(tmpl_idx);
rrd_free(&rrd);
+#ifdef HAVE_MMAP
+ munmap(rrd_mmaped_file, rrd_filesize);
+#endif
fclose(rrd_file);
return(-1);
}
/* seek to the beginning of the rra's */
if (rra_current != rra_begin) {
+#ifndef HAVE_MMAP
if(fseek(rrd_file, rra_begin, SEEK_SET) != 0) {
rrd_set_error("seek error in rrd");
free(step_start);
break;
}
+#endif
rra_current = rra_begin;
}
rra_start = rra_begin;
case DST_DERIVE:
if(rrd.pdp_prep[i].last_ds[0] != 'U'){
for(ii=0;updvals[i+1][ii] != '\0';ii++){
- if(updvals[i+1][ii] < '0' || updvals[i+1][ii] > '9' || (ii=0 && updvals[i+1][ii] == '-')){
+ if(updvals[i+1][ii] < '0' || updvals[i+1][ii] > '9' || (ii==0 && updvals[i+1][ii] == '-')){
rrd_set_error("not a simple integer: '%s'",updvals[i+1]);
break;
}
}
pdp_new[i]= rrd_diff(updvals[i+1],rrd.pdp_prep[i].last_ds);
if(dst_idx == DST_COUNTER) {
- /* simple overflow catcher sugestet by andres kroonmaa */
+ /* simple overflow catcher suggested by Andres Kroonmaa */
/* this will fail terribly for non 32 or 64 bit counters ... */
/* are there any others in SNMP land ? */
if (pdp_new[i] < (double)0.0 )
rra_pos_tmp = rra_start +
(rrd.stat_head->ds_cnt)*(rrd.rra_ptr[i].cur_row)*sizeof(rrd_value_t);
if(rra_pos_tmp != rra_current) {
+#ifndef HAVE_MMAP
if(fseek(rrd_file, rra_pos_tmp, SEEK_SET) != 0){
rrd_set_error("seek error in rrd");
break;
}
+#endif
rra_current = rra_pos_tmp;
}
% (rrd.rra_def[i].pdp_cnt*rrd.stat_head->pdp_step))
- ((rra_step_cnt[i]-1)*rrd.rra_def[i].pdp_cnt*rrd.stat_head->pdp_step);
}
+#ifdef HAVE_MMAP
+ pcdp_summary = write_RRA_row(&rrd, i, &rra_current, scratch_idx, rrd_file,
+ pcdp_summary, &rra_time, rrd_mmaped_file);
+#else
pcdp_summary = write_RRA_row(&rrd, i, &rra_current, scratch_idx, rrd_file,
pcdp_summary, &rra_time);
+#endif
if (rrd_test_error()) break;
/* write other rows of the bulk update, if any */
scratch_idx = CDP_secondary_val;
- for ( ; rra_step_cnt[i] > 1;
- rra_step_cnt[i]--, rrd.rra_ptr[i].cur_row++)
+ for ( ; rra_step_cnt[i] > 1; rra_step_cnt[i]--)
{
- if (rrd.rra_ptr[i].cur_row == rrd.rra_def[i].row_cnt)
+ if (++rrd.rra_ptr[i].cur_row == rrd.rra_def[i].row_cnt)
{
#ifdef DEBUG
fprintf(stderr,"Wraparound for RRA %s, %lu updates left\n",
% (rrd.rra_def[i].pdp_cnt*rrd.stat_head->pdp_step))
- ((rra_step_cnt[i]-2)*rrd.rra_def[i].pdp_cnt*rrd.stat_head->pdp_step);
}
+#ifdef HAVE_MMAP
+ pcdp_summary = write_RRA_row(&rrd, i, &rra_current, scratch_idx, rrd_file,
+ pcdp_summary, &rra_time, rrd_mmaped_file);
+#else
pcdp_summary = write_RRA_row(&rrd, i, &rra_current, scratch_idx, rrd_file,
pcdp_summary, &rra_time);
+#endif
}
if (rrd_test_error())
if (rra_step_cnt != NULL) free(rra_step_cnt);
rpnstack_free(&rpnstack);
+#ifdef HAVE_MMAP
+ if (munmap(rrd_mmaped_file, rrd_filesize) == -1) {
+ rrd_set_error("error writing(unmapping) file: %s", filename);
+ }
+#endif
/* if we got here and if there is an error and if the file has not been
* written to, then close things up and return. */
if (rrd_test_error()) {
* critical except during the burning cycles. */
if (schedule_smooth)
{
-#ifndef WIN32
- rrd_file = fopen(filename,"r+");
-#else
+#if defined(WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
rrd_file = fopen(filename,"rb+");
+#else
+ rrd_file = fopen(filename,"r+");
#endif
rra_start = rra_begin;
for (i = 0; i < rrd.stat_head -> rra_cnt; ++i)
LockRRD(FILE *rrdfile)
{
int rrd_fd; /* File descriptor for RRD */
- int stat;
+ int rcstat;
rrd_fd = fileno(rrdfile);
{
-#ifndef WIN32
- struct flock lock;
+#if defined(WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
+ struct _stat st;
+
+ if ( _fstat( rrd_fd, &st ) == 0 ) {
+ rcstat = _locking ( rrd_fd, _LK_NBLCK, st.st_size );
+ } else {
+ rcstat = -1;
+ }
+#else
+ struct flock lock;
lock.l_type = F_WRLCK; /* exclusive write lock */
lock.l_len = 0; /* whole file */
lock.l_start = 0; /* start of file */
lock.l_whence = SEEK_SET; /* end of file */
- stat = fcntl(rrd_fd, F_SETLK, &lock);
-#else
- struct _stat st;
-
- if ( _fstat( rrd_fd, &st ) == 0 ) {
- stat = _locking ( rrd_fd, _LK_NBLCK, st.st_size );
- } else {
- stat = -1;
- }
+ rcstat = fcntl(rrd_fd, F_SETLK, &lock);
#endif
}
- return(stat);
+ return(rcstat);
}
+#ifdef HAVE_MMAP
+info_t
+*write_RRA_row (rrd_t *rrd, unsigned long rra_idx, unsigned long *rra_current,
+ unsigned short CDP_scratch_idx, FILE *rrd_file,
+ info_t *pcdp_summary, time_t *rra_time, void *rrd_mmaped_file)
+#else
info_t
*write_RRA_row (rrd_t *rrd, unsigned long rra_idx, unsigned long *rra_current,
unsigned short CDP_scratch_idx, FILE *rrd_file,
info_t *pcdp_summary, time_t *rra_time)
+#endif
{
unsigned long ds_idx, cdp_idx;
infoval iv;
rrd->rra_def[rra_idx].pdp_cnt, rrd->ds_def[ds_idx].ds_nam),
RD_I_VAL, iv);
}
+#ifdef HAVE_MMAP
+ memcpy((char *)rrd_mmaped_file + *rra_current,
+ &(rrd -> cdp_prep[cdp_idx].scratch[CDP_scratch_idx].u_val),
+ sizeof(rrd_value_t));
+#else
if(fwrite(&(rrd -> cdp_prep[cdp_idx].scratch[CDP_scratch_idx].u_val),
sizeof(rrd_value_t),1,rrd_file) != 1)
{
rrd_set_error("writing rrd");
return 0;
}
+#endif
*rra_current += sizeof(rrd_value_t);
}
return (pcdp_summary);
projects / rrdtool.git / blobdiff