src/shared/libosmocore/include/osmocom/core/signal.h

   1 #ifndef OSMO_SIGNAL_H
   2 #define OSMO_SIGNAL_H
   3
   4 #include <stdint.h>
   5
   6 /*! \defgroup signal Intra-application signals
   7  *  @{
   8  */
   9 /*! \file signal.h */
  10
  11 /* subsystem signaling numbers: we split the numberspace for applications and
  12  * libraries: from 0 to UINT_MAX/2 for applications, from UINT_MAX/2 to
  13  * UINT_MAX for libraries. */
  14 #define OSMO_SIGNAL_SS_APPS             0
  15 #define OSMO_SIGNAL_SS_RESERVED         2147483648u
  16
  17 /*! \brief signal subsystems */
  18 enum {
  19         SS_L_GLOBAL             = OSMO_SIGNAL_SS_RESERVED,
  20         SS_L_INPUT,
  21         SS_L_NS,
  22 };
  23
  24 /* application-defined signal types. */
  25 #define OSMO_SIGNAL_T_APPS              0
  26 #define OSMO_SIGNAL_T_RESERVED          2147483648u
  27
  28 /*! \brief signal types. */
  29 enum {
  30         S_L_GLOBAL_SHUTDOWN     = OSMO_SIGNAL_T_RESERVED,
  31 };
  32
  33 /*! signal callback function type */
  34 typedef int osmo_signal_cbfn(unsigned int subsys, unsigned int signal, void *handler_data, void *signal_data);
  35
  36
  37 /* Management */
  38 int osmo_signal_register_handler(unsigned int subsys, osmo_signal_cbfn *cbfn, void *data);
  39 void osmo_signal_unregister_handler(unsigned int subsys, osmo_signal_cbfn *cbfn, void *data);
  40
  41 /* Dispatch */
  42 void osmo_signal_dispatch(unsigned int subsys, unsigned int signal, void *signal_data);
  43
  44 /*! @} */
  45
  46 #endif /* OSMO_SIGNAL_H */