addition of RRDs::times -- Christophe Kalt <kalt@taranis.org>

[rrdtool.git] / bindings / perl-shared / RRDs.pm

diff --git a/bindings/perl-shared/RRDs.pm b/bindings/perl-shared/RRDs.pm
index 2cd3370..6ee4b3d 100644 (file)
--- a/bindings/perl-shared/RRDs.pm
+++ b/bindings/perl-shared/RRDs.pm
@@ -7,7 +7,7 @@ use vars qw(@ISA $VERSION);
 
 require DynaLoader;
 
-$VERSION = 1.000331;
+$VERSION = 1.100001;
 
 bootstrap RRDs $VERSION;
 
@@ -29,6 +29,7 @@ RRDs - Access rrdtool as a shared module
   RRDs::graph ...
   RRDs::fetch ...
   RRDs::tune ...
+  RRDs::times(start, end)
 
 =head1 DESCRIPTION
 
@@ -51,6 +52,11 @@ Note that
 is also valid.
 
 
+The RRDs::times function takes two parameters:  a "start" and "end" time.
+These should be specified in the U<AT-STYLE TIME SPECIFICATION> format
+used by rrdtool.  See the U<rrdfetch> documentation for a detailed
+explanation on how to specify time.
+
 =head2 Error Handling
 
 The RRD functions will not abort your program even when they can not make
@@ -67,8 +73,8 @@ then the previous function has completed its task successfully.
 
 =head2 Return Values
 
-The functions RRDs::last, RRDs::graph, RRDs::info and RRDs::fetch return their
-findings.
+The functions RRDs::last, RRDs::graph, RRDs::info, RRDs::fetch and RRDs::times
+return their findings.
 
 B<RRDs::last> returns a single INTEGER representing the last update time.
 
@@ -90,6 +96,11 @@ the values of the properties.
    print "$key = $$hash{$key}\n";
  }
 
+B<RRDs::updatev> also returns a pointer to hash. The keys of the hash
+are concatenated strings of a timestamp, RRA index, and data source name for
+each consolidated data point (CDP) written to disk as a result of the
+current update call. The hash values are CDP values.
+
 B<RRDs::fetch> is the most complex of
 the pack regarding return values. There are 4 values. Two normal
 integers, a pointer to an array and a pointer to a array of pointers.
@@ -109,8 +120,22 @@ integers, a pointer to an array and a pointer to a array of pointers.
     print "\n";
   }
 
+B<RRDs::times> returns two integers which are the number of seconds since
+epoch (1970-01-01) for the supplied "start" and "end" arguments, respectively.
+
 See the examples directory for more ways to use this extension.
 
+=head1 NOTE
+
+If you are manipulating the TZ variable you should also call the posixs
+function tzset to initialize all internal state of the library for properly
+operating in the timezone of your choice.
+
+ use POSIX qw(tzset);
+ $ENV{TZ} = 'CET';   
+ POSIX::tzset();     
+
+
 =head1 AUTHOR
 
 Tobias Oetiker E<lt>oetiker@ee.ethz.chE<gt>