first commit
This commit is contained in:
Jose Caban
251
extern/stdcxx/4.2.1/tests/utilities/20.temp.buffer.mt.cpp
vendored
Normal file
251
extern/stdcxx/4.2.1/tests/utilities/20.temp.buffer.mt.cpp
vendored
Normal file
@@ -0,0 +1,251 @@
|
||||
/***************************************************************************
|
||||
*
|
||||
* 20.temp.buffer.mt.cpp - test exercising the thread safety
|
||||
* of std::get_temporary_buffer() and
|
||||
* std::return_temporary_buffer()
|
||||
*
|
||||
* $Id: 20.temp.buffer.mt.cpp 650350 2008-04-22 01:35:17Z 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.
|
||||
*
|
||||
* Copyright 2005-2008 Rogue Wave Software, Inc.
|
||||
*
|
||||
**************************************************************************/
|
||||
|
||||
#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> // for rw_test(), ...
|
||||
#include <rw_thread.h> // for rw_thread_create(), ...
|
||||
|
||||
/**************************************************************************/
|
||||
|
||||
#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);
|
||||
buf.first = 0;
|
||||
}
|
||||
|
||||
/**************************************************************************/
|
||||
|
||||
extern "C" void* thr_func (void *arg)
|
||||
{
|
||||
thr_args* const targs = (thr_args*)arg;
|
||||
|
||||
std::printf ("thread %u 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;
|
||||
}
|
||||
}
|
||||
|
||||
// free any buffers that remain allocated
|
||||
if (buf0.first) test_return_buffer (targs, buf0);
|
||||
if (buf1.first) test_return_buffer (targs, buf1);
|
||||
if (buf2.first) test_return_buffer (targs, buf2);
|
||||
if (buf3.first) test_return_buffer (targs, buf3);
|
||||
|
||||
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);
|
||||
}
|
||||
Reference in New Issue
Block a user