[ViewVC] Diff of: cvs/BDB/BDB.pm

Comparing BDB/BDB.pm (file contents):
Revision 1.22 by root, Mon Dec 10 03:57:27 2007 UTC vs.
Revision 1.24 by root, Mon Dec 10 04:57:14 2007 UTC

 =head2 BERKELEYDB FUNCTIONS
 All of these are functions. The create functions simply return a new
 object and never block. All the remaining functions all take an optional
-callback as last argument that gets passed the return value. If it is
+callback as last argument. If it is missing, then the function will be
-missing, then the function will be executed synchronously, and the return
+executed synchronously. In both cases, C<$!> will reflect the return value
-value is returned as normally.
+of the function.
 BDB functions that cannot block (mostly functions that manipulate
 settings) are method calls on the relevant objects, so the rule of thumb
 is: if its a method, its not blocking, if its a function, it takes a
 callback as last argument.
 =head3 EVENT PROCESSING AND EVENT LOOP INTEGRATION
 =over 4
+=item $msg = BDB::strerror [$errno]
+Returns the string corresponding to the given errno value. If no argument
+is given, use C<$!>.
 =item $fileno = BDB::poll_fileno
 Return the I<request result pipe file descriptor>. This filehandle must be
 polled for reading by some mechanism outside this module (e.g. Event or
 select, see below or the SYNOPSIS). If the pipe becomes readable you have

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