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From se...@apache.org
Subject svn commit: r358453 - in /incubator/stdcxx/trunk/tests/utilities: ./ 20.temp.buffer.mt.cpp
Date Thu, 22 Dec 2005 02:58:44 GMT
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  <sebor@roguewave.com>

	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
------------------------------------------------------------------------------
    svn:eol-style = native

Propchange: incubator/stdcxx/trunk/tests/utilities/20.temp.buffer.mt.cpp
------------------------------------------------------------------------------
    svn:keywords = Id



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