mirror of https://gerrit.osmocom.org/libosmocore
signal: reserve signal subsystems >= INT_MAX/2 for libraries
The first range (from 0 to INT_MAX/2) of signal subsystems can be used by client applications while the second range (from INT_MAX) is reserved for libraries. This is useful to support signals defined in libraries that may be used by different client applications.
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#ifndef OSMO_SIGNAL_H
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#define OSMO_SIGNAL_H
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#include <stdint.h>
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/* subsystem signaling numbers: we split the numberspace for applications and
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* libraries: from 0 to UINT_MAX/2 for applications, from UINT_MAX/2 to
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* UINT_MAX for libraries. */
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#define OSMO_SIGNAL_SS_APPS 0
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#define OSMO_SIGNAL_SS_RESERVED 2147483648
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/* signal subsystems. */
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enum {
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SS_GLOBAL = OSMO_SIGNAL_SS_RESERVED,
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SS_INPUT,
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};
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/* application-defined signal types. */
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#define OSMO_SIGNAL_T_APPS 0
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#define OSMO_SIGNAL_T_RESERVED 2147483648
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/* signal types. */
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enum {
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S_GLOBAL_SHUTDOWN = OSMO_SIGNAL_T_RESERVED,
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};
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typedef int osmo_signal_cbfn(unsigned int subsys, unsigned int signal, void *handler_data, void *signal_data);
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