Node:Java Threads, Previous:SPTerm and Memory, Up:Mixing Java and Prolog
None of the pre-3.9 methods in se.sics.jasper are thread safe.
They can only be called from the thread that created the SICStus
object. (This is different from how se.sics.jasper used to work
in SICStus 3.8).
In 3.9 there are two ways to set up for calls to SICStus from multiple threads.
One way is to use the static method newProlog in the class
Jasper:
Prolog newProlog (String argv[], String bootPath)
|
Method on Jasper |
Creates a Prolog interface object. Starts a server thread which
will serve that Prolog. The server thread takes care of all
interaction with the Prolog runtime, making sure that all calls to the
Prolog runtime will be done from one and the same thread.
|
See the HTML documentation on the interface Prolog for details
on what methods are available for a client thread.
Another way is to create a SICStus object and use the following methods:
Prolog newProlog ()
|
Method on SICStus |
Returns the Prolog interface for this SICStus object.
Creates a server and a client (Prolog) interface for this
SICStus object. The server may be started by calling
startServer()
|
startServer ()
|
Method on SICStus |
Start serving requests from a Prolog client. This method does not
return until another thread calls stopServer(). Before calling
this method you should call newProlog() and hand the result
over to another Thread.
|
stopServer ()
|
Method on SICStus |
Stops the server. Calling this method causes the Thread running in
the startServer() method to return.
|
As with the first method, the interface Prolog defines the
methods available for the client threads.