Permission to use internal thread pools (see GetThreadPoolAction).
A ThreadPoolPermission contains a name (also referred to as a "target name") but no action list;
you either have the named permission or you don't.
ThreadPoolPermission defines two target names, "getSystemThreadPool" and "getUserThreadPool", for
permission to get the system thread group pool and permission to get the non-system thread group
A ThreadPoolPermission implies the following:
- permission to access the thread group designated by the target name; see
- permission to execute a NewThreadAction, which requires RuntimePermission("getClassLoader") and
RuntimePermission("setContextClassLoader"); more practically, this is permission to have a
Runnable executed with the system class loader as the context class loader
- permission to execute a Runnable without the caller's protection domain in force