Tornado

C
Tornado Tools Reference
Using the -A option forces the target server to include all global and local symbols from
the core file in the target server symbol table.
Target Memory Management
The target server manages the target agent memory pool on the remote system. This
memory pool is mainly used by the loader when object files are downloaded. The target
server automatically increases the size of the agent memory pool when necessary (when
there is not enough room to load a file, for example). A cache is implemented so that
memory-related requests from Tornado tools may be satisfied at the target server level,
avoiding the transfer of data from the real target memory. This cache has a default
maximum size of 1 MB.
The -m option allows to specify a maximum size for the cache. This may be required when
the agent memory pool size becomes greater than the maximum size of the cache. In this
situation, the memory-related requests that fall outside the cache are satisfied at the target
level, and thus are substantially slower.
The Tornado browser provides a graphical view of the target agent memory pool
utilization.
C
Virtual Input/Output Mechanism
The target server can redirect data through virtual Input/Output channels. For target tasks
to have access to this mechanism, a Virtual I/O Driver must be included in the target
system. When this driver is included, any task on the target may open a virtual channel to
read from, or write to, that channel. On the host, any tool may open the same virtual
channel to write to, or read from, that channel. Thus the target server acts as an I/O
dispatcher, multiplexing whatever physical communications layer is available to allow
run-time tasks and host tools to communicate easily.
When the target server is started with the -C option, a console window attached to virtual
channel 0 is displayed. On UNIX, this window can be displayed on a specified X server
(including a host other than where the target server is running) with the -display option.
The number of buffered lines (default 88) can be changed by setting the environment
variable WTX_CONSOLE_LINES to the number of desired buffered line. Set this variable
before starting your UNIX target server.
This permits any task on the target to open virtual I/O channel 0 to send characters to, or
read characters from, this window. If started with -redirectIO, a redirection of target
standard I/O is automatically done. If -redirectIO is set, but -C flag is not set, the target
I/O will be redirected to the target server, but, since no console will be present to display
the informations, events will be sent to the connected WTX tools.
The target server can also be used as a virtual target shell console: The shell is running on
the target, and its I/O are done from the target server virtual console. To do this, use the -
redirectShell flag in conjunction with -C flag. The target server will automatically redirect
the target shell I/O into the default target server console. The shell must be included in
the target system. This feature is useful if target is only accessible through back end and
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