SYSTEM FREEZE DIAGNOSTICS AND RESTORATION TECHNIQUE APPLIED TO WIRELESS DEVICE

摘要

PPROBLEM TO BE SOLVED: To avoid freeze of the whole system by avoiding deadlock and restoring the system by detecting generated deadlock when the deadlock cannot be avoided in a wireless device. PSOLUTION: A diagnostic engine is made to reside in the wireless device to always observe an operating state of a process and a use state of a system resource, the deadlock is avoided when the process is started and the system resource is required, the deadlock is immediately diagnosed when the deadlock is generated between processes to specify a place (process) and a cause of the deadlock, when the deadlock can instantaneously be fixed, a countermeasure is taken to restore the system. For a bug on software, a diagnostic report in which detailed diagnostic data is recorded is transmitted to a diagnostic server. PCOPYRIGHT: (C)2007,JPO&INPIT