Update to FreeBSD head 2018-06-01

Git mirror commit fb63610a69b0eb7f69a201ba05c4c1a7a2739cf9.

Update #3472.

testsuite/epoch01/epoch01.py

@@ -0,0 +1,79 @@
+#!/usr/bin/env python
+
+#
+# Copyright (c) 2018 embedded brains GmbH.  All rights reserved.
+#
+#  embedded brains GmbH
+#  Dornierstr. 4
+#  82178 Puchheim
+#  Germany
+#  <rtems@embedded-brains.de>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. 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 AUTHOR 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 AUTHOR 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.
+#
+
+import re
+import libxml2
+from libxml2 import xmlNode
+import matplotlib.pyplot as plt
+data = open('epoch01.scn').read()
+data = re.sub(r'\*\*\*.*\*\*\*', '', data)
+doc = libxml2.parseDoc(data)
+ctx = doc.xpathNewContext()
+
+plt.yscale('log')
+plt.title('Epoch Performance')
+plt.xlabel('Active Workers')
+plt.ylabel('Operation Count')
+
+def m(n):
+	return int(n.getContent())
+
+def getCounterSums(variant):
+	w = 1
+	y = []
+	while True:
+		c = map(m, ctx.xpathEval('/TestEpoch01/' + variant + '[@activeWorker="' + str(w) + '"]/Counter'))
+		if not c:
+			break
+		y.append(sum(c))
+		w = w + 1
+	return y
+
+y = getCounterSums('ThreadLocalMutex')
+x = range(1, len(y) + 1)
+plt.plot(x, y, label = 'Thread-Local Mutex', marker = 'o')
+
+y = getCounterSums('EnterExit')
+plt.plot(x, y, label = 'Enter Exit', marker = 'o')
+
+y = getCounterSums('EnterExitPreempt')
+plt.plot(x, y, label = 'Enter Exit Preempt', marker = 'o')
+
+y = getCounterSums('EnterListOpExit')
+plt.plot(x, y, label = 'Enter List Op Exit', marker = 'o')
+
+y = getCounterSums('EnterListOpExitPreempt')
+plt.plot(x, y, label = 'Enter List Op Exit Preempt', marker = 'o')
+
+plt.legend(loc = 'best')
+plt.show()