1 files changed, 89 insertions, 0 deletions
diff --git a/Include/tostr.h b/Include/tostr.h
new file mode 100644
index 000000000000..6032f6afb323
--- /dev/null
+++ b/Include/tostr.h
@@ -0,0 +1,89 @@
+/*
+ * tostr.h - DTrace To-String include file.
+ *
+ * $Id: tostr.h 36 2007-09-15 06:51:18Z brendan $
+ *
+ * COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
+ *
+ * CDDL HEADER START
+ *
+ *  The contents of this file are subject to the terms of the
+ *  Common Development and Distribution License, Version 1.0 only
+ *  (the "License").  You may not use this file except in compliance
+ *  with the License.
+ *
+ *  You can obtain a copy of the license at Docs/cddl1.txt
+ *  or http://www.opensolaris.org/os/licensing.
+ *  See the License for the specific language governing permissions
+ *  and limitations under the License.
+ *
+ * CDDL HEADER END
+ *
+ * 16-Sep-2007	Brendan Gregg	Created this.
+ */
+
+/*
+ * NUM_TO_STR(n) - takes a number and returns a string with a prefix,
+ *	intended to fit withen 6 chars.
+ *
+ *	Input		Output
+ *	0		0
+ *	1		1
+ *	10		10
+ *	999		999
+ *	1000		1.0K
+ *	1100		1.1K
+ *	10000		10.0K
+ *	999999		999.0K
+ * 	1000000		1.0M
+ * 	10000000	10.0M
+ * 	999999999	999.9M
+ */
+#define	NUM_TO_STR(n)							\
+	n >= 1000000 ?							\
+	strjoin(strjoin(strjoin(lltostr(n / 1000000), "."), 		\
+	lltostr((n % 1000000) / 100000)), "M") : n >= 1000 ?		\
+	strjoin(strjoin(strjoin(lltostr(n / 1000), "."), 		\
+	lltostr((n % 1000) / 100)), "K") : lltostr(n)
+
+/*
+ * BYTES_TO_STR(n) - takes a byte count and returns a string with a prefix,
+ *	intended to fit withen 6 chars.
+ *
+ *	Input		Output
+ *	0		0
+ *	1		1
+ *	10		10
+ *	999		0.9K
+ *	1000		0.9K
+ *	1024		1.0K
+ *	10240		10.0K
+ *	1000000		976.5K
+ * 	1048576		1.0M
+ * 	1000000000	953.6M
+ */
+#define	BYTES_TO_STR(n)							\
+	n >= 1024000 ?							\
+	strjoin(strjoin(strjoin(lltostr(n / 1048576), "."), 		\
+	lltostr((n % 1048576) / 104858)), "M") : n >= 1000 ?		\
+	strjoin(strjoin(strjoin(lltostr(n / 1024), "."), 		\
+	lltostr((n % 1024) / 103)), "K") : lltostr(n)
+
+/*
+ * US_TO_STR(n) - takes microseconds and returns a string with a prefix,
+ *	intended to fit withen 6 chars.
+ *
+ *	Input		Output
+ *	0		0
+ *	1		1u
+ *	10		10u
+ *	999		999u
+ *	1000		1.0m
+ *	1100		1.1m
+ *	10000		10.0m
+ *	999999		999.0m
+ */
+#define	US_TO_STR(n)							\
+	n == 0 ? "0" : n >= 1000 ?					\
+	strjoin(lltostr(n / 1000), "m") : strjoin(lltostr(n), "u")
+