| SYNOPSIS |
| #include <signals.h> |
| |
| int handle_external_signal(int signal) |
| |
| DESCRIPTION |
| If the driver receives a signal from the OS it forwards it to the |
| mudlib master by calling this function. The signal received by the |
| driver is given in <signal> and may be one of the following: |
| SIGHUP, SIGINT, SIGTERM, SIGUSR1, SIGUSR2. |
| |
| If this function returns != 0, the driver will assume the signal has |
| been dealt with and take NO further action. |
| The exception is SIGTERM, which can't be handled. The driver will |
| perform a graceful shutdown of the game after this function returns. |
| |
| If the master does not handle the signal (returns 0 or this function |
| doe not exit), the driver will perform the following default actions: |
| |
| SIGHUP: begin a graceful shutdown |
| SIGINT: send itself an unhandled SIGINT. This usually causes an |
| immediate and non-graceful shutdown. |
| SIGUSR1: the driver will reload the master object |
| SIGUSR2: the driver will re-open its debug log file |
| (this will happen the next time the driver writes to it) |
| |