include/osmocom/core/signal.h

   1 #ifndef OSMO_SIGNAL_H
   2 #define OSMO_SIGNAL_H
   3
   4 #include <stdint.h>
   5
   6 /* subsystem signaling numbers: we split the numberspace for applications and
   7  * libraries: from 0 to UINT_MAX/2 for applications, from UINT_MAX/2 to
   8  * UINT_MAX for libraries. */
   9 #define OSMO_SIGNAL_SS_APPS             0
  10 #define OSMO_SIGNAL_SS_RESERVED         2147483648
  11
  12 /* signal subsystems. */
  13 enum {
  14         SS_GLOBAL               = OSMO_SIGNAL_SS_RESERVED,
  15         SS_INPUT,
  16 };
  17
  18 /* application-defined signal types. */
  19 #define OSMO_SIGNAL_T_APPS              0
  20 #define OSMO_SIGNAL_T_RESERVED          2147483648
  21
  22 /* signal types. */
  23 enum {
  24         S_GLOBAL_SHUTDOWN       = OSMO_SIGNAL_T_RESERVED,
  25 };
  26
  27 typedef int osmo_signal_cbfn(unsigned int subsys, unsigned int signal, void *handler_data, void *signal_data);
  28
  29
  30 /* Management */
  31 int osmo_signal_register_handler(unsigned int subsys, osmo_signal_cbfn *cbfn, void *data);
  32 void osmo_signal_unregister_handler(unsigned int subsys, osmo_signal_cbfn *cbfn, void *data);
  33
  34 /* Dispatch */
  35 void osmo_signal_dispatch(unsigned int subsys, unsigned int signal, void *signal_data);
  36
  37 #endif /* OSMO_SIGNAL_H */