Abstract:
A system and method are provided to allow demand loading and discarding of Java executable image (JXE) files. The virtual machine allocates an address space for a requested JXE program. The read-only portion of the JXE file is memory mapped from its nonvolatile location to the allocated memory space using read-only mapping and the read/write section of the JXE file are loaded into memory. When a page of the JXE program is needed, a page fault occurs if the read-only portion has not been loaded into memory. The operating system's page fault handler retrieves the needed page(s) from the nonvolatile storage location based upon the mapping data that resulted from the previously performed memory mapping. Because the read-only section of the JXE file is memory mapped using read-only mapping, the operating system's paging process is free to discard previously loaded memory pages that contain read-only portions of the JXE file.
Abstract:
Selective filtering of an incoming telephone call is provided wherein a caller ID information of a third party wishing to converse with a first party already engaged in conversation with a second party is retrieved. The priority level associated with the third party is then determined and compared to a priority level associated with the second party. In the event that the third party has a higher priority level than the second party, the first party is alerted to the occurrence of the incoming call. Alternatively, if the third party has a lower priority level than the second party, the incoming call to an alternate destination.