diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/core/seq/seq_prioq.h |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'sound/core/seq/seq_prioq.h')
-rw-r--r-- | sound/core/seq/seq_prioq.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/sound/core/seq/seq_prioq.h b/sound/core/seq/seq_prioq.h new file mode 100644 index 00000000000..f12af79308b --- /dev/null +++ b/sound/core/seq/seq_prioq.h | |||
@@ -0,0 +1,62 @@ | |||
1 | /* | ||
2 | * ALSA sequencer Priority Queue | ||
3 | * Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl> | ||
4 | * | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation; either version 2 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * This program is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | * GNU General Public License for more details. | ||
15 | * | ||
16 | * You should have received a copy of the GNU General Public License | ||
17 | * along with this program; if not, write to the Free Software | ||
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
19 | * | ||
20 | */ | ||
21 | #ifndef __SND_SEQ_PRIOQ_H | ||
22 | #define __SND_SEQ_PRIOQ_H | ||
23 | |||
24 | #include "seq_memory.h" | ||
25 | |||
26 | |||
27 | /* === PRIOQ === */ | ||
28 | |||
29 | typedef struct { | ||
30 | snd_seq_event_cell_t* head; /* pointer to head of prioq */ | ||
31 | snd_seq_event_cell_t* tail; /* pointer to tail of prioq */ | ||
32 | int cells; | ||
33 | spinlock_t lock; | ||
34 | } prioq_t; | ||
35 | |||
36 | |||
37 | /* create new prioq (constructor) */ | ||
38 | extern prioq_t *snd_seq_prioq_new(void); | ||
39 | |||
40 | /* delete prioq (destructor) */ | ||
41 | extern void snd_seq_prioq_delete(prioq_t **fifo); | ||
42 | |||
43 | /* enqueue cell to prioq */ | ||
44 | extern int snd_seq_prioq_cell_in(prioq_t *f, snd_seq_event_cell_t *cell); | ||
45 | |||
46 | /* dequeue cell from prioq */ | ||
47 | extern snd_seq_event_cell_t *snd_seq_prioq_cell_out(prioq_t *f); | ||
48 | |||
49 | /* return number of events available in prioq */ | ||
50 | extern int snd_seq_prioq_avail(prioq_t *f); | ||
51 | |||
52 | /* peek at cell at the head of the prioq */ | ||
53 | extern snd_seq_event_cell_t *snd_seq_prioq_cell_peek(prioq_t *f); | ||
54 | |||
55 | /* client left queue */ | ||
56 | extern void snd_seq_prioq_leave(prioq_t *f, int client, int timestamp); | ||
57 | |||
58 | /* Remove events */ | ||
59 | void snd_seq_prioq_remove_events(prioq_t * f, int client, | ||
60 | snd_seq_remove_events_t *info); | ||
61 | |||
62 | #endif | ||