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signaller.c
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signaller.c
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/* Copyright (C) 2010 Mikhail Osipov <mike.osipov@gmail.com> */
/* Published under the GNU General Public License V.2, see file COPYING */
#include "signaller.h"
#include <pthread.h>
struct signaller {
gint signum;
pthread_t thread;
GMutex *mutex;
gboolean blocked;
};
Signaller *signaller_new(gint signum)
{
Signaller *s;
s = g_new(Signaller, 1);
s->signum = signum;
s->thread = pthread_self();
s->mutex = g_mutex_new();
s->blocked = FALSE;
return s;
}
void signaller_block(Signaller *s)
{
g_mutex_lock(s->mutex);
s->blocked = TRUE;
g_mutex_unlock(s->mutex);
}
void signaller_unblock(Signaller *s)
{
g_mutex_lock(s->mutex);
s->blocked = FALSE;
g_mutex_unlock(s->mutex);
}
void signaller_raise(Signaller *s)
{
g_mutex_lock(s->mutex);
if (s->blocked == FALSE)
pthread_kill(s->thread, s->signum);
g_mutex_unlock(s->mutex);
}
void signaller_free(Signaller *s)
{
g_mutex_free(s->mutex);
g_free(s);
}