>From 8bad3c9751cba151b5f4ad2108bf2b860705c6eb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20B=C3=ADlka?= <neleai@seznam.cz>
Date: Sun, 26 Jul 2015 10:15:56 +0200
Subject: [PATCH 2/4] dlopen benchmark

---
 benchtests/Makefile       |  3 ++-
 benchtests/bench-dlopen.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100644 benchtests/bench-dlopen.c

diff --git a/benchtests/Makefile b/benchtests/Makefile
index 8e615e5..9e82e43 100644
--- a/benchtests/Makefile
+++ b/benchtests/Makefile
@@ -30,7 +30,7 @@ bench-pthread := pthread_once
 bench := $(bench-math) $(bench-pthread)
 
 # String function benchmarks.
-string-bench := bcopy bzero memccpy memchr memcmp memcpy memmem memmove \
+string-bench := dlopen bcopy bzero memccpy memchr memcmp memcpy memmem memmove \
 		mempcpy memset rawmemchr stpcpy stpncpy strcasecmp strcasestr \
 		strcat strchr strchrnul strcmp strcpy strcspn strlen \
 		strncasecmp strncat strncmp strncpy strnlen strpbrk strrchr \
@@ -57,6 +57,7 @@ CFLAGS-bench-ffsll.c += -fno-builtin
 
 bench-malloc := malloc-thread
 
+$(objpfx)bench-dlopen: -ldl
 $(addprefix $(objpfx)bench-,$(bench-math)): $(libm)
 $(addprefix $(objpfx)bench-,$(bench-pthread)): $(shared-thread-library)
 $(objpfx)bench-malloc-thread: $(shared-thread-library)
diff --git a/benchtests/bench-dlopen.c b/benchtests/bench-dlopen.c
new file mode 100644
index 0000000..b47d18b
--- /dev/null
+++ b/benchtests/bench-dlopen.c
@@ -0,0 +1,47 @@
+/* Measure strcpy functions.
+   Copyright (C) 2013-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+#include <dlfcn.h>
+#include <string.h>
+#include "bench-timing.h"
+
+int
+main (void)
+{
+  long ret = 0;
+
+  size_t i, j,iters = 100;
+  timing_t start, stop, cur;
+  for (j=0;j<10;j++)
+    {
+      TIMING_NOW (start);
+      for (i = 0; i < iters; ++i)
+        {
+          ret += (long) dlsym (RTLD_DEFAULT, "strlen");
+          ret += (long) dlsym (RTLD_DEFAULT, "memcpy");
+        }
+      TIMING_NOW (stop);
+
+      TIMING_DIFF (cur, start, stop);
+
+      TIMING_PRINT_MEAN ((double) cur, (double) iters);
+    }
+
+  return ret;
+}
+
+
-- 
2.1.4