CDE Threads and Signal Handling

Terminal Widget Library (libDtTerm)

LibDtTerm currently takes ownership of both the SIGCHLD and SIGPIPE signals. The SIGCHLD signal is used by libDtTerm to update internal information regarding the state of the process spawned within the dtterm widget. This implies that an application which links with the libDtTerm library, and creates dtterm widgets, must not attempt to catch the SIGCHLD signal, and should block the signal in all other threads. The SIGPIPE signal is used by libDtTerm only if logging has been enabled. If an application uses the libDtTerm library, but does not take advantage of the logging facilities, then libDtTerm will not take control of the SIGPIPE handler.