Quick program to time how long ccprintf takes to write

to a stream compared to sprintf to a buffer.

--HG--
extra : convert_revision : de80724943d18aa110aa39cde9414252d9a7944c

2 files changed, 93 insertions, 0 deletions

diff --git a/src/unittest/Makefile b/src/unittest/Makefile
index e22b80b48..e6a621a9e 100644
--- a/src/unittest/Makefile
+++ b/src/unittest/Makefile
@@ -56,6 +56,9 @@ circletest: unittest/circletest.cc base/circlebuf.cc
 cprintftest: unittest/cprintftest.cc base/cprintf.cc
 	$(CXX) $(CCFLAGS) -o $@ $^
 
+cprintftime: unittest/cprintftime.cc base/cprintf.cc
+	$(CXX) $(CCFLAGS) -o $@ $^
+
 initest: unittest/initest.cc base/str.cc base/inifile.cc base/cprintf.cc
 	$(CXX) $(CCFLAGS) -o $@ $^
 
diff --git a/src/unittest/cprintftime.cc b/src/unittest/cprintftime.cc
new file mode 100644
index 000000000..f35e0aa25
--- /dev/null
+++ b/src/unittest/cprintftime.cc
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2002-2005 The Regents of The University of Michigan
+ * 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;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * 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.
+ *
+ * Authors: Nathan Binkert
+ */
+
+#include <iostream>
+#include <list>
+#include <string>
+#include <sstream>
+
+#include "base/cprintf.hh"
+
+using namespace std;
+
+volatile int stop = false;
+
+void
+handle_alarm(int signal)
+{
+    stop = true;
+}
+
+void
+do_test(int seconds)
+{
+    stop = false;
+    alarm(seconds);
+}
+
+int
+main()
+{
+    stringstream result;
+    int iterations = 0;
+
+    signal(SIGALRM, handle_alarm);
+
+    do_test(10);
+    while (!stop) {
+        stringstream result;
+        ccprintf(result,
+                 "this is a %s of %d iterations %3.2f %#x\n",
+                 "test", iterations, 51.934, &result);
+
+        iterations += 1;
+    }
+
+    cprintf("completed %d iterations of ccprintf in 10s, %f iterations/s\n",
+            iterations, iterations / 10.0);
+
+    do_test(10);
+    while (!stop) {
+        char result[1024];
+        sprintf(result,
+                 "this is a %s of %d iterations %3.2f %#x\n",
+                 "test", iterations, 51.934, &result);
+
+        iterations += 1;
+    }
+
+    cprintf("completed %d iterations of sprintf in 10s, %f iterations/s\n",
+            iterations, iterations / 10.0);
+
+    return 0;
+}