Author: sebor
Date: Wed Dec 21 18:58:41 2005
New Revision: 358453
URL: http://svn.apache.org/viewcvs?rev=358453&view=rev
Log:
2005-12-21 Martin Sebor <[EMAIL PROTECTED]>
STDCXX-4
* 20.temp.buffer.mt.cpp: New test exercising the thread safety
of lib.temporary.buffer.
Added:
incubator/stdcxx/trunk/tests/utilities/
incubator/stdcxx/trunk/tests/utilities/20.temp.buffer.mt.cpp (with props)
Added: incubator/stdcxx/trunk/tests/utilities/20.temp.buffer.mt.cpp
URL:
http://svn.apache.org/viewcvs/incubator/stdcxx/trunk/tests/utilities/20.temp.buffer.mt.cpp?rev=358453&view=auto
==============================================================================
--- incubator/stdcxx/trunk/tests/utilities/20.temp.buffer.mt.cpp (added)
+++ incubator/stdcxx/trunk/tests/utilities/20.temp.buffer.mt.cpp Wed Dec 21
18:58:41 2005
@@ -0,0 +1,237 @@
+/***************************************************************************
+ *
+ * 20.temp.buffer.mt.cpp - test exercising the thread safety
+ * of std::get_temporary_buffer() and
+ * std::return_temporary_buffer()
+ *
+ * $Id$
+ *
+ ***************************************************************************
+ *
+ * Copyright (c) 1994-2005 Quovadx, Inc., acting through its Rogue Wave
+ * Software division. Licensed 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 <memory> // for get_temporary_buffer
+#include <utility> // for pair
+
+#include <cassert> // for assert
+#include <cstddef> // for ptrdiff_t
+#include <cstdio> // for printf()
+#include <cstring> // for memset()
+
+#include <driver.h>
+#include <rwthread.h>
+
+/**************************************************************************/
+
+#ifndef _RWSTD_REENTRANT
+# define MAX_THREADS 0
+#else
+# define MAX_THREADS 32
+#endif
+
+/* extern */ unsigned rw_opt_nthreads = 4 <= MAX_THREADS ? 4 : MAX_THREADS;
+/* extern */ unsigned rw_opt_nloops = 1024 * 1024;
+
+/**************************************************************************/
+
+struct thr_args
+{
+ unsigned threadno_; // thread ordinal number
+ unsigned ngets_; // number of calls to get_temporary_buffer
+ unsigned nreturns_; // number of calls to return_temporary_buffer
+};
+
+/**************************************************************************/
+
+template <class T>
+std::pair<T*, std::ptrdiff_t>
+test_get_buffer (thr_args *args, T*, unsigned nobjs)
+{
+ ++args->ngets_;
+
+ std::pair<T*, std::ptrdiff_t> buf =
+ std::get_temporary_buffer<T>(std::ptrdiff_t (nobjs));
+
+// std::printf ("T%u: get %s: { %p, %d } == %u\n",
+// args->threadno_, type_name (T ()),
+// buf.first, buf.second, buf.second * sizeof (T));
+
+ if (buf.first && buf.second) {
+
+ const std::size_t nbytes = buf.second * sizeof (T);
+
+ std::memset (buf.first, args->threadno_ + 1, nbytes);
+
+ *((char*)buf.first + nbytes - 1) = '\0';
+ }
+
+ return buf;
+}
+
+/**************************************************************************/
+
+template <class T>
+void
+test_return_buffer (thr_args *args, std::pair<T*, std::ptrdiff_t> &buf)
+{
+ ++args->nreturns_;
+
+ std::size_t len = 0;
+
+ if (buf.first) {
+
+ typedef unsigned char UChar;
+
+ for (const UChar *pb = (const UChar*)buf.first; ; ++pb, ++len) {
+
+ if (*pb != (args->threadno_ + 1)) {
+ if (0 == *pb)
+ ++len;
+ break;
+ }
+ }
+ }
+
+// std::printf ("T%u: return %s: { %p, %d } == %u\n",
+// args->threadno_, type_name (T ()),
+// buf.first, buf.second, len);
+
+ assert (len == buf.second * sizeof (T));
+
+ std::return_temporary_buffer<T>(buf.first);
+}
+
+/**************************************************************************/
+
+extern "C" void* thr_func (void *arg)
+{
+ thr_args* const targs = (thr_args*)arg;
+
+ std::printf ("thread %d starting...\n", targs->threadno_);
+
+#ifndef _RWSTD_INT64_T
+
+ typedef char Type64 [8];
+
+#else // if defined (_RWSTD_INT64_T)
+
+ typedef _RWSTD_INT64_T Type64;
+
+#endif // _RWSTD_INT64_T
+
+ std::pair<_RWSTD_INT8_T*, std::ptrdiff_t> buf0;
+ std::pair<_RWSTD_INT16_T*, std::ptrdiff_t> buf1;
+ std::pair<_RWSTD_INT32_T*, std::ptrdiff_t> buf2;
+ std::pair<Type64*, std::ptrdiff_t> buf3;
+
+ for (unsigned i = 0; i != rw_opt_nloops; ++i) {
+
+ const unsigned nelems = (i + targs->threadno_) % 32;
+
+ switch ((i + targs->threadno_) % 8) {
+
+ case 0:
+ buf0 = test_get_buffer (targs, (_RWSTD_INT8_T*)0, nelems);
+ break;
+
+ case 1:
+ buf1 = test_get_buffer (targs, (_RWSTD_INT16_T*)0, nelems);
+ break;
+
+ case 2:
+ buf2 = test_get_buffer (targs, (_RWSTD_INT32_T*)0, nelems);
+ break;
+
+ case 3:
+ buf3 = test_get_buffer (targs, (Type64*)0, nelems);
+ break;
+
+ case 4:
+ test_return_buffer (targs, buf0);
+ break;
+
+ case 5:
+ test_return_buffer (targs, buf2);
+ break;
+
+ case 6:
+ test_return_buffer (targs, buf1);
+ break;
+
+ case 7:
+ test_return_buffer (targs, buf3);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+/**************************************************************************/
+
+static int
+run_test (int, char*[])
+{
+ rw_info (0, 0, 0, "std::get_temporary_buffer(ptrdiff_t)");
+ rw_info (0, 0, 0, "std::return_temporary_buffer(ptrdiff_t)");
+
+ if (0 < rw_opt_nthreads) {
+
+ rw_thread_t tid [MAX_THREADS + 1];
+
+ thr_args targs [MAX_THREADS + 1];
+
+ std::memset (targs, 0, sizeof targs);
+
+ for (unsigned i = 0; i != rw_opt_nthreads; ++i) {
+
+ targs [i].threadno_ = i;
+
+ rw_fatal (0 == rw_thread_create (tid + i, 0, thr_func, targs + i),
+ 0, 0, "thread_create() failed");
+ }
+
+ for (unsigned i = 0; i != rw_opt_nthreads; ++i) {
+
+ rw_error (0 == rw_thread_join (tid [i], 0), 0, 0,
+ "thread_join() failed");
+ }
+ }
+ else {
+
+ thr_args targs;
+
+ std::memset (&targs, 0, sizeof targs);
+
+ thr_func (&targs);
+
+ }
+
+ return 0;
+}
+
+/**************************************************************************/
+
+int main (int argc, char *argv[])
+{
+ return rw_test (argc, argv, __FILE__,
+ "lib.temporary.buffer",
+ 0 /* no comment */,
+ run_test,
+ "|-nloops#0 " // must be non-negative
+ "|-nthreads#0-*", // must be in specified range
+ &rw_opt_nloops,
+ int (MAX_THREADS),
+ &rw_opt_nthreads);
+}
Propchange: incubator/stdcxx/trunk/tests/utilities/20.temp.buffer.mt.cpp
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Propchange: incubator/stdcxx/trunk/tests/utilities/20.temp.buffer.mt.cpp
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