Add traces to help tracking subtle timing bugs often causing

underuns and overruns; such bugs are hard to debug with ktrace
or a debugger. They are also handy to debug or monitor code
using aucat.

To enable traces, compile aucat with ``make DEBUG=-DDEBUG'' and
use the -d option multiple times.

ok jakemsr

1 files changed, 45 insertions, 0 deletions

diff --git a/usr.bin/aucat/dbg.h b/usr.bin/aucat/dbg.h
new file mode 100644
index 00000000000..119aa5d546a
--- /dev/null
+++ b/usr.bin/aucat/dbg.h
@@ -0,0 +1,45 @@
+#ifdef DEBUG
+/*
+ * Copyright (c) 2003-2007 Alexandre Ratchov <alex@caoua.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 	- Redistributions of source code must retain the above
+ * 	  copyright notice, this list of conditions and the
+ * 	  following disclaimer.
+ *
+ * 	- Redistributions in binary form must reproduce the above
+ * 	  copyright notice, this list of conditions and the
+ * 	  following disclaimer in the documentation and/or other
+ * 	  materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef MIDISH_DBG_H
+#define MIDISH_DBG_H
+
+void	 dbg_puts(char *);
+void	 dbg_putx(unsigned long);
+void	 dbg_putu(unsigned long);
+void	 dbg_puti(long);
+void	 dbg_panic(void);
+void	 dbg_flush(void);
+
+extern unsigned dbg_sync;
+
+#endif /* MIDISH_DBG_H */
+#endif /* DEBUG */