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Posted to commits@stdcxx.apache.org by se...@apache.org on 2007/06/14 01:07:21 UTC
svn commit: r547057 -
/incubator/stdcxx/trunk/tests/strings/21.string.cons.mt.cpp
Author: sebor
Date: Wed Jun 13 16:07:20 2007
New Revision: 547057
URL: http://svn.apache.org/viewvc?view=rev&rev=547057
Log:
2007-06-13 Martin Sebor <se...@roguewave.com>
* 21.string.cons.mt.cpp: New test exercising the thread safety
of a small subset of basic_string ctors and assignment operators.
Added:
incubator/stdcxx/trunk/tests/strings/21.string.cons.mt.cpp
Added: incubator/stdcxx/trunk/tests/strings/21.string.cons.mt.cpp
URL: http://svn.apache.org/viewvc/incubator/stdcxx/trunk/tests/strings/21.string.cons.mt.cpp?view=auto&rev=547057
==============================================================================
--- incubator/stdcxx/trunk/tests/strings/21.string.cons.mt.cpp (added)
+++ incubator/stdcxx/trunk/tests/strings/21.string.cons.mt.cpp Wed Jun 13 16:07:20 2007
@@ -0,0 +1,246 @@
+/***************************************************************************
+ *
+ * 21.string.cons.mt.cpp:
+ *
+ * Test exercising the thread safety of basic_string constructors
+ * and assignment operators.
+ *
+ * $Id: 21.string.push_back.mt.cpp 425530 2006-07-25 21:39:50Z sebor $
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * permissions and limitations under the License.
+ *
+ **************************************************************************/
+
+#include <string> // for string
+
+#include <cstddef> // for size_t
+
+#include <driver.h> // for rw_test()
+#include <rw_thread.h> // for rw_thread_pool(), ...
+#include <valcmp.h> // for rw_strncmp()
+
+/**************************************************************************/
+
+#define MAX_THREADS 32
+#define MAX_LOOPS 100000
+
+const char* const
+data [] = {
+ /* 0 */ "",
+ /* 1 */ "a",
+ /* 2 */ "bc",
+ /* 3 */ "cde",
+ /* 4 */ "defg",
+ /* 5 */ "efghi",
+ /* 6 */ "fghijk",
+ /* 7 */ "ghijklm"
+};
+
+const std::size_t
+nstrings = sizeof data / sizeof *data;
+
+const std::string
+shared [nstrings] = {
+ data [0], data [1], data [2], data [3],
+ data [4], data [5], data [6], data [7]
+};
+
+
+#ifndef _RWSTD_NO_WCHAR_T
+
+const wchar_t* const
+wdata [] = {
+ /* 0 */ L"",
+ /* 1 */ L"a",
+ /* 2 */ L"bc",
+ /* 3 */ L"cde",
+ /* 4 */ L"defg",
+ /* 5 */ L"efghi",
+ /* 6 */ L"fghijk",
+ /* 7 */ L"ghijklm"
+};
+
+const std::wstring
+wshared [nstrings] = {
+ wdata [0], wdata [1], wdata [2], wdata [3],
+ wdata [4], wdata [5], wdata [6], wdata [7]
+};
+
+#endif // _RWSTD_NO_WCHAR_T
+
+/**************************************************************************/
+
+int rw_opt_nthreads = 4;
+int rw_opt_nloops = MAX_LOOPS;
+
+
+template <class T>
+void
+test_string_cons (const T* const *pdata,
+ const std::basic_string<T> *pshared,
+ std::size_t threadno)
+{
+ typedef std::basic_string<T> String;
+
+ for (std::size_t i = 0; i != std::size_t (rw_opt_nloops); ++i) {
+
+ const std::size_t inx1 = (i + threadno) % nstrings;
+ const std::size_t inx2 = (inx1 + 1) % nstrings;
+
+ // create a copy of the global string
+ const String copy (pshared [inx1]);
+
+ String assigned (pshared [inx2]);
+
+ {
+ // create another copy of the same global string
+ const String copy2 (pshared [inx1]);
+
+ // verify that this copy has the expected length...
+ RW_ASSERT (pshared [inx1].length () == copy2.length ());
+
+ // ...and the expected data
+ RW_ASSERT (0 == rw_strncmp (pdata [inx1], copy2.data ()));
+
+ assigned = pshared [inx1];
+
+ // copy2 gets destroyed...
+ }
+
+ // verify that local copy has the expected length...
+ RW_ASSERT (pshared [inx1].length () == copy.length ());
+
+ // ...and the expected data
+ RW_ASSERT (0 == rw_strncmp (pdata [inx1], copy.data ()));
+
+ // verify that assigned string has the expected length...
+ RW_ASSERT (pshared [inx1].length () == assigned.length ());
+
+ // ...and the expected data
+ RW_ASSERT (0 == rw_strncmp (pdata [inx1], assigned.data ()));
+
+ // reassign and verify again
+ assigned = pdata [inx2];
+
+ RW_ASSERT (pshared [inx2].length () == assigned.length ());
+ RW_ASSERT (0 == rw_strncmp (pdata [inx2], assigned.data ()));
+ }
+
+}
+
+
+extern "C" {
+
+bool test_wstring;
+
+static void*
+thread_func (void *arg)
+{
+ const rw_thread_t* const pthread = (rw_thread_t*)arg;
+
+ // get the 0-based thread number
+ const std::size_t threadno = std::size_t (pthread->threadno);
+
+ if (test_wstring) {
+
+#ifndef _RWSTD_NO_WCHAR_T
+
+ test_string_cons<wchar_t>(wdata, wshared, threadno);
+
+#endif // _RWSTD_NO_WCHAR_T
+
+ }
+ else {
+ test_string_cons (data, shared, threadno);
+ }
+
+ return 0;
+}
+
+} // extern "C"
+
+/**************************************************************************/
+
+static int
+run_test (int, char**)
+{
+ rw_info (0, 0, 0,
+ "testing std::string with %d thread%{?}s%{;}, "
+ "%zu iteration%{?}s%{;} each",
+ rw_opt_nthreads, 1 != rw_opt_nthreads,
+ rw_opt_nloops, 1 != rw_opt_nloops);
+
+ test_wstring = false;
+
+ // create and start a pool of threads and wait for them to finish
+ int result =
+ rw_thread_pool (0, std::size_t (rw_opt_nthreads), 0, thread_func, 0);
+
+ for (std::size_t i = 0; i != nstrings; ++i) {
+
+ const std::size_t size =
+ std::string::traits_type::length (data [i]);
+
+ rw_assert (size == shared [i].size (), 0, 0,
+ "shared string modifed from #s to %{#S}",
+ data [i], &shared [i]);
+ }
+
+#ifndef _RWSTD_NO_WCHAR_T
+
+ rw_info (0, 0, 0,
+ "testing std::wstring with %d thread%{?}s%{;}, "
+ "%zu iteration%{?}s%{;} each",
+ rw_opt_nthreads, 1 != rw_opt_nthreads,
+ rw_opt_nloops, 1 != rw_opt_nloops);
+
+ test_wstring = true;
+
+ // start a pool of threads to exercise wstring thread safety
+ result +=
+ rw_thread_pool (0, std::size_t (rw_opt_nthreads), 0, thread_func, 0);
+
+ for (std::size_t i = 0; i != nstrings; ++i) {
+
+ const std::size_t size =
+ std::wstring::traits_type::length (wdata [i]);
+
+ rw_assert (size == wshared [i].size (), 0, 0,
+ "shared string modifed from #ls to %{#lS}",
+ wdata [i], &wshared [i]);
+ }
+
+#endif // _RWSTD_NO_WCHAR_T
+
+ return result;
+}
+
+/**************************************************************************/
+
+int main (int argc, char *argv[])
+{
+ return rw_test (argc, argv, __FILE__,
+ "lib.string.cons",
+ "thread safety", run_test,
+ "|-nloops#0 " // must be non-negative
+ "|-nthreads#0-*", // must be in [0, MAX_THREADS]
+ &rw_opt_nloops,
+ int (MAX_THREADS),
+ &rw_opt_nthreads);
+}