1 /* -----------------------------------------------------------------------------
3 * (c) The GHC Team, 1998-2005
5 * Signal processing / handling.
7 * ---------------------------------------------------------------------------*/
12 #if !defined(PAR) && !defined(mingw32_HOST_OS)
14 #include "posix/Signals.h"
16 #elif defined(mingw32_HOST_OS)
18 #include "win32/ConsoleHandler.h"
22 #define signals_pending() (rtsFalse)
30 * Function: initUserSignals()
32 * Initialize the console handling substrate.
34 extern void initUserSignals(void);
37 * Function: initDefaultHandlers()
39 * Install any default signal/console handlers. Currently we install a
40 * Ctrl+C handler that shuts down the RTS in an orderly manner.
42 extern void initDefaultHandlers(void);
45 * Function: blockUserSignals()
47 * Temporarily block the delivery of further console events. Needed to
48 * avoid race conditions when GCing the queue of outstanding handlers or
49 * when emptying the queue by running the handlers.
52 extern void blockUserSignals(void);
55 * Function: unblockUserSignals()
57 * The inverse of blockUserSignals(); re-enable the deliver of console events.
59 extern void unblockUserSignals(void);
62 * Function: awaitUserSignals()
64 * Wait for the next console event. Currently a NOP (returns immediately.)
66 extern void awaitUserSignals(void);
69 * Function: markSignalHandlers()
71 * Evacuate the handler queue. _Assumes_ that console event delivery
72 * has already been blocked.
74 extern void markSignalHandlers (evac_fn evac);
76 #endif /* RTS_USER_SIGNALS */
78 #endif /* RTS_SIGNALS_H */