3 * Copyright 2008 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
30 ring::ring(unsigned int entries)
31 : d_max(entries), d_read_ind(0), d_write_ind(0), d_ring(entries),
32 d_mutex(), d_not_empty(&d_mutex)
34 for (unsigned int i = 0; i < entries; i++) {
41 ring::wait_for_not_empty()
43 omni_mutex_lock l(d_mutex);
49 ring::enqueue(void *p, size_t len)
51 omni_mutex_lock l(d_mutex);
55 d_ring[d_write_ind].d_len = len;
56 d_ring[d_write_ind].d_base = p;
64 ring::dequeue(void **p, size_t *len)
66 omni_mutex_lock l(d_mutex);
70 *p = d_ring[d_read_ind].d_base;
71 *len = d_ring[d_read_ind].d_len;