observer.h
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999-2000, 2005, 2007, 2010-2012, 2014-2016 Free
Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef _MAILUTILS_SYS_OBSERVER_H
# define _MAILUTILS_SYS_OBSERVER_H
# include <mailutils/observer.h>
# ifdef __cplusplus
extern "C" {
# endif
struct _mu_observer
{
int flags;
void *owner;
int (*_action) (mu_observer_t, size_t, void *, void *);
void *_action_data;
int (*_destroy) (mu_observer_t, void *data);
};
struct _mu_observable
{
void *owner;
mu_list_t list;
};
struct _event
{
size_t type;
mu_observer_t observer;
};
typedef struct _event *event_t;
# ifdef __cplusplus
}
# endif
#endif /* _MAILUTILS_SYS_OBSERVER_H */