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!
diff --git a/sound/core/seq/seq_fifo.h b/sound/core/seq/seq_fifo.h
new file mode 100644
index 0000000..d677c26
--- /dev/null
+++ b/sound/core/seq/seq_fifo.h
@@ -0,0 +1,72 @@
+/*
+ * ALSA sequencer FIFO
+ * Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+#ifndef __SND_SEQ_FIFO_H
+#define __SND_SEQ_FIFO_H
+
+#include "seq_memory.h"
+#include "seq_lock.h"
+
+
+/* === FIFO === */
+
+typedef struct {
+ pool_t *pool; /* FIFO pool */
+ snd_seq_event_cell_t* head; /* pointer to head of fifo */
+ snd_seq_event_cell_t* tail; /* pointer to tail of fifo */
+ int cells;
+ spinlock_t lock;
+ snd_use_lock_t use_lock;
+ wait_queue_head_t input_sleep;
+ atomic_t overflow;
+
+} fifo_t;
+
+/* create new fifo (constructor) */
+extern fifo_t *snd_seq_fifo_new(int poolsize);
+
+/* delete fifo (destructor) */
+extern void snd_seq_fifo_delete(fifo_t **f);
+
+
+/* enqueue event to fifo */
+extern int snd_seq_fifo_event_in(fifo_t *f, snd_seq_event_t *event);
+
+/* lock fifo from release */
+#define snd_seq_fifo_lock(fifo) snd_use_lock_use(&(fifo)->use_lock)
+#define snd_seq_fifo_unlock(fifo) snd_use_lock_free(&(fifo)->use_lock)
+
+/* get a cell from fifo - fifo should be locked */
+int snd_seq_fifo_cell_out(fifo_t *f, snd_seq_event_cell_t **cellp, int nonblock);
+
+/* free dequeued cell - fifo should be locked */
+extern void snd_seq_fifo_cell_putback(fifo_t *f, snd_seq_event_cell_t *cell);
+
+/* clean up queue */
+extern void snd_seq_fifo_clear(fifo_t *f);
+
+/* polling */
+extern int snd_seq_fifo_poll_wait(fifo_t *f, struct file *file, poll_table *wait);
+
+/* resize pool in fifo */
+int snd_seq_fifo_resize(fifo_t *f, int poolsize);
+
+
+#endif