From 91e9d17c3f80a741db5e753c36c4c93922494897 Mon Sep 17 00:00:00 2001
From: Ingo Weinhold <ingo_weinhold@gmx.de>
Date: Mon, 8 Sep 2008 00:50:27 +0000
Subject: [PATCH] Small test program timing our path resolution. Which sucks
 badly...

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27364 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/tests/system/kernel/Jamfile               |  2 +
 .../system/kernel/path_resolution_test.cpp    | 48 +++++++++++++++++++
 2 files changed, 50 insertions(+)
 create mode 100644 src/tests/system/kernel/path_resolution_test.cpp

diff --git a/src/tests/system/kernel/Jamfile b/src/tests/system/kernel/Jamfile
index b841d855ed..fd85348d33 100644
--- a/src/tests/system/kernel/Jamfile
+++ b/src/tests/system/kernel/Jamfile
@@ -18,6 +18,8 @@ SimpleTest lock_node_test :
 
 SimpleTest page_fault_cache_merge_test : page_fault_cache_merge_test.cpp ;
 
+SimpleTest path_resolution_test : path_resolution_test.cpp ;
+
 SimpleTest port_close_test_1 : port_close_test_1.cpp ;
 SimpleTest port_close_test_2 : port_close_test_2.cpp ;
 
diff --git a/src/tests/system/kernel/path_resolution_test.cpp b/src/tests/system/kernel/path_resolution_test.cpp
new file mode 100644
index 0000000000..78d7776bc1
--- /dev/null
+++ b/src/tests/system/kernel/path_resolution_test.cpp
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2008, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+ */
+
+#include <stdio.h>
+#include <sys/stat.h>
+
+#include <OS.h>
+
+
+static void
+time_lstat(const char* path)
+{
+	printf("%-60s ...", path);
+	fflush(stdout);
+	bigtime_t startTime = system_time();
+
+	static const int32 iterations = 10000;
+	for (int32 i = 0; i < iterations; i++) {
+		struct stat st;
+		lstat(path, &st);
+	}
+
+	bigtime_t totalTime = system_time() - startTime;
+	printf(" %5.3f us/call\n", (double)totalTime / iterations);
+}
+
+
+int
+main()
+{
+	const char* const paths[] = {
+		"/",
+		"/boot",
+		"/boot/develop",
+		"/boot/develop/headers",
+		"/boot/develop/headers/posix",
+		"/boot/develop/headers/posix/sys",
+		"/boot/develop/headers/posix/sys/stat.h",
+		NULL
+	};
+
+	for (int32 i = 0; paths[i] != NULL; i++)
+		time_lstat(paths[i]);
+
+	return 0;
+}