How many threads does the bridge start?
Request-handling threads are started from a thread pool, which limits the number of user requests to 20 (default), see system property php.java.bridge.threads. All further requests have to wait until one of the worker threads returns to the pool. When running in a servlet engine, a ContextServer is started which handles the pipe or local socket communication channel. When java invokes local scripts outside of a HTTP environment, the bridge starts a HttpServer, a ContextServer and a HttpProxy. The HttpProxy represents the PHP continuation and the HttpServer the request-handling java continuation associated with the JSR223 script.
