[CalendarServer-changes] [14992] CalendarServer/trunk/contrib/tools/flow.d

[source_changes at macosforge.org]

Revision: 14992
          http://trac.calendarserver.org//changeset/14992
Author:   cdaboo at apple.com
Date:     2015-07-24 10:15:32 -0700 (Fri, 24 Jul 2015)
Log Message:
-----------
Add dtrace function call tracer script.

Added Paths:
-----------
    CalendarServer/trunk/contrib/tools/flow.d

Added: CalendarServer/trunk/contrib/tools/flow.d
===================================================================
--- CalendarServer/trunk/contrib/tools/flow.d	                        (rev 0)
+++ CalendarServer/trunk/contrib/tools/flow.d	2015-07-24 17:15:32 UTC (rev 14992)
@@ -0,0 +1,74 @@
+#!/usr/sbin/dtrace -Zs
+/*
+ * py_flow.d - snoop Python execution showing function flow.
+ *             Written for the Python DTrace provider.
+ *
+ * $Id: py_flow.d 51 2007-09-24 00:55:23Z brendan $
+ *
+ * This traces Python activity from all Python programs on the system
+ * running with Python provider support.
+ *
+ * USAGE: flow.d <PID>			# hit Ctrl-C to end
+ *
+ * This watches Python function entries and returns, and indents child
+ * function calls.
+ *
+ * FIELDS:
+ *		C			CPU-id
+ *		TIME(us)	Time since boot, us
+ *		FILE		Filename that this function belongs to
+ *		FUNC		Function name
+ *
+ * LEGEND:
+ *		->		function entry
+ *		<-		function return
+ *
+ * WARNING: Watch the first column carefully, it prints the CPU-id. If it
+ * changes, then it is very likely that the output has been shuffled.
+ *
+ * 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
+ *
+ * 09-Sep-2007	Brendan Gregg	Created this.
+ *
+ * This is a variation of py_flow.d that takes a pid.
+ */
+
+#pragma D option quiet
+#pragma D option switchrate=10
+
+self int depth;
+
+dtrace:::BEGIN
+{
+	printf("%3s %-16s %-16s -- %s\n", "C", "TIME(us)", "FILE", "FUNC");
+}
+
+python*:::function-entry
+/pid == $1/
+{
+	printf("%3d %-16d %-16s %*s-> %s\n", cpu, timestamp / 1000,
+	    basename(copyinstr(arg0)), self->depth * 2, "", copyinstr(arg1));
+	self->depth++;
+}
+
+python*:::function-return
+/pid == $1/
+{
+	self->depth -= self->depth > 0 ? 1 : 0;
+	printf("%3d %-16d %-16s %*s<- %s\n", cpu, timestamp / 1000,
+	    basename(copyinstr(arg0)), self->depth * 2, "", copyinstr(arg1));
+}
\ No newline at end of file


Property changes on: CalendarServer/trunk/contrib/tools/flow.d
___________________________________________________________________
Added: svn:executable
   + *
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