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$Id$
This example shows how to store the state of CORBA servants in
persistent memory. The example is a variation of the Grid example in
$TAO_ROOT/examples/Simple/grid.
The server hosts the Grid servant. A client sets some values in the
grid. These values are written out by the server in to a
memory-mapped file, at which point the server shuts down. A new
server is then started, which reads from the same memory-mapped file.
Another client (named persistent_client) then reads and prints the
values from the locations where the original client stored the values.
server:
-------
server [-d debug] -o <ior_output_file> -m <memory_pool>
Options:
-------
-o Outputs the ior to the file
The ior is the reference using which the client can interact with
the target server object.
-m Name of the memory pool.
When the server is started, you should see as the first line of output
something that looks like
iiop:1.0//danzon.cs.wustl.edu:10015/P35ad159600081a38/child_poa/server
(-ORBobjrefstyle url)
or
IOR:000000000000001649444c3a43756269745...
(-ORBobjrefstyle ior)
client:
-------
client [-d] [-x] [-f <Server_ior_file>] [-k file://<ior_output_file>]
[-w] [-h] [-v]
Options:
-------
-d Debug flag
-x Tells the server to shutdown at the end of the test.
-f Reads the server ior from the file
-k IOR or The IOR can also be given in the format like file://[file.ior]
with the full path
-w Width of the grid
-h Height of the grid
-v Value that needs to be the starting point for storage. The value
that is stored will be this value + location id.
persistent_client:
-----------------
persistent_client [-d] [-x] [-f <Server_ior_file>] [-k file://<ior_output_file>]
[-w] [-h] [-v]
Options:
-------
-d Debug flag
-x Tells the server to shutdown at the end of the test.
-f Reads the server ior from the file
-k IOR or The IOR can also be given in the format like file://[file.ior]
with the full path
-w Width of the grid from where the values are to be read
-h Height of the grid from the where the values are to be read
run_test.pl:
------------
This perl script runs the server then the client. It shuts down the
server and restarts the server. It then starts the persistent_client
to read the values from the memory mapped file.
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