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Jose Caban
2025-06-07 11:34:38 -04:00
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extern/stdcxx/4.2.1/tests/localization/22.locale.time.get.mt.cpp vendored Normal file
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/************************************************************************
*
* 22.locale.time.get.mt.cpp
*
* test exercising the thread safety of the time_get facet
*
* $Id: 22.locale.time.get.mt.cpp 648752 2008-04-16 17:01:56Z faridz $
*
***************************************************************************
*
* 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 2002-2007 Rogue Wave Software.
*
**************************************************************************/
#include <ios> // for ios
#include <iterator> // for ostreambuf_iterator
#include <locale> // for locale, time_put
#include <cstring> // for strlen ()
#include <ctime> // for tm
#include <rw_locale.h>
#include <rw_thread.h>
#include <driver.h> // for rw_assert ()
#include <valcmp.h> // for rw_strncmp ()
#define MAX_THREADS 32
#define MAX_LOOPS 100000
// default number of threads (will be adjusted to the number
// of processors/cores later)
int rw_opt_nthreads = 1;
// the number of times each thread should iterate
int rw_opt_nloops = 50000;
// number of locales to use
int rw_opt_nlocales = MAX_THREADS;
// should all threads share the same set of locale objects instead
// of creating their own?
int rw_opt_shared_locale;
/**************************************************************************/
// array of locale names to use for testing
static const char*
locales [MAX_THREADS];
// number of locale names in the array
static std::size_t
nlocales;
/**************************************************************************/
//
struct MyTimeData
{
enum { BufferSize = 64 };
// name of the locale the data corresponds to
const char* locale_name_;
// optionally set to the named locale for threads to share
std::locale locale_;
// the time struct used to generate strings below
std::tm time_;
// the type specifier
char format_;
// narrow representations of time_ given the
// locale_name_ and the format_
char ncs_ [BufferSize];
#ifndef _RWSTD_NO_WCHAR_T
// wide representations of time_
wchar_t wcs_ [BufferSize];
#endif // _RWSTD_NO_WCHAR_T
} my_time_data [MAX_THREADS];
template <class charT, class Traits>
struct MyIos: std::basic_ios<charT, Traits>
{
MyIos () {
this->init (0);
}
};
template <class charT, class Traits>
struct MyStreambuf: std::basic_streambuf<charT, Traits>
{
typedef std::basic_streambuf<charT, Traits> Base;
MyStreambuf ()
: Base () {
}
void pubsetg (const charT *gbeg, std::streamsize n) {
this->setg (_RWSTD_CONST_CAST (charT*, gbeg),
_RWSTD_CONST_CAST (charT*, gbeg),
_RWSTD_CONST_CAST (charT*, gbeg) + n);
}
void pubsetp (charT *pbeg, std::streamsize n) {
this->setp (pbeg, pbeg + n);
}
};
void verify_fields (const std::tm& a, const std::tm& b)
{
RW_ASSERT (a.tm_sec == b.tm_sec);
RW_ASSERT (a.tm_min == b.tm_min);
RW_ASSERT (a.tm_hour == b.tm_hour);
RW_ASSERT (a.tm_mday == b.tm_mday);
RW_ASSERT (a.tm_mon == b.tm_mon);
RW_ASSERT (a.tm_year == b.tm_year);
RW_ASSERT (a.tm_wday == b.tm_wday);
RW_ASSERT (a.tm_yday == b.tm_yday);
}
#define RW_ASSERT_FIELDS(a,b) verify_fields(a,b)
extern "C" {
bool test_char; // exercise time_get<char>
bool test_wchar; // exercise time_get<wchar_t>
static void*
thread_func (void*)
{
MyIos<char, std::char_traits<char> > nio;
MyStreambuf<char, std::char_traits<char> > nsb;
nio.rdbuf (&nsb);
#ifndef _RWSTD_NO_WCHAR_T
MyIos<wchar_t, std::char_traits<wchar_t> > wio;
MyStreambuf<wchar_t, std::char_traits<wchar_t> > wsb;
wio.rdbuf (&wsb);
#endif // _RWSTD_NO_WCHAR_T
std::ios_base::iostate state = std::ios_base::goodbit;
std::tm local;
for (int i = 0; i != rw_opt_nloops; ++i) {
// save the name of the locale
const MyTimeData& data = my_time_data [i % nlocales];
// construct a named locale, get a reference to the time_put
// facet from it and use it to format a random time value
// using a random conversion specifier
const std::locale loc =
rw_opt_shared_locale ? data.locale_
: std::locale (data.locale_name_);
if (test_char) {
// exercise the narrow char specialization of the facet
const std::time_get<char> &ng =
std::use_facet<std::time_get<char> >(loc);
nio.imbue (loc);
nsb.pubsetg (data.ncs_, RW_COUNT_OF (data.ncs_));
const std::istreambuf_iterator<char> iter (&nsb);
const std::istreambuf_iterator<char> end;
std::memset (&local, 0, sizeof local);
switch (data.format_) {
case 'X':
ng.get_time (iter, end, nio, state, &local);
break;
case 'x':
ng.get_date (iter, end, nio, state, &local);
break;
case 'a':
case 'A':
ng.get_weekday (iter, end, nio, state, &local);
break;
case 'b':
case 'B':
ng.get_monthname (iter, end, nio, state, &local);
break;
case 'y':
case 'Y':
ng.get_year (iter, end, nio, state, &local);
break;
default:
#ifndef _RWSTD_NO_EXT_TIME_GET
ng.get (iter, end, nio, state, &local, data.format_);
#endif // _RWSTD_NO_EXT_TIME_GET
break;
}
RW_ASSERT (! (state & std::ios_base::failbit));
RW_ASSERT_FIELDS (local, data.time_);
}
// both specializations may be tested at the same time
if (test_wchar) {
// exercise the wide char specialization of the facet
#ifndef _RWSTD_NO_WCHAR_T
const std::time_get<wchar_t> &wg =
std::use_facet<std::time_get<wchar_t> >(loc);
wio.imbue (loc);
wsb.pubsetg (data.wcs_, RW_COUNT_OF (data.wcs_));
const std::istreambuf_iterator<wchar_t> iter (&wsb);
const std::istreambuf_iterator<wchar_t> end;
std::memset (&local, 0, sizeof local);
switch (data.format_) {
case 'X':
wg.get_time (iter, end, wio, state, &local);
break;
case 'x':
wg.get_date (iter, end, wio, state, &local);
break;
case 'a':
case 'A':
wg.get_weekday (iter, end, wio, state, &local);
break;
case 'b':
case 'B':
wg.get_monthname (iter, end, wio, state, &local);
break;
case 'y':
case 'Y':
wg.get_year (iter, end, wio, state, &local);
break;
default:
#ifndef _RWSTD_NO_EXT_TIME_GET
wg.get (iter, end, wio, state, &local, data.format_);
#endif // _RWSTD_NO_EXT_TIME_GET
break;
}
RW_ASSERT (! (state & std::ios_base::failbit));
RW_ASSERT_FIELDS (local, data.time_);
#endif // _RWSTD_NO_WCHAR_T
}
}
return 0;
}
} // extern "C"
/**************************************************************************/
static int
run_test (int, char**)
{
MyIos<char, std::char_traits<char> > nio;
MyStreambuf<char, std::char_traits<char> > nsb;
nio.rdbuf (&nsb);
#ifndef _RWSTD_NO_WCHAR_T
MyIos<wchar_t, std::char_traits<wchar_t> > wio;
MyStreambuf<wchar_t, std::char_traits<wchar_t> > wsb;
wio.rdbuf (&wsb);
#endif // _RWSTD_NO_WCHAR_T
// find all installed locales for which setlocale (LC_ALL) succeeds
const char* const locale_list =
rw_opt_locales ? rw_opt_locales : rw_locales (_RWSTD_LC_ALL);
const std::size_t maxinx = RW_COUNT_OF (locales);
int j = 0;
for (const char* name = locale_list;
*name;
name += std::strlen (name) + 1) {
const std::size_t inx = nlocales;
locales [inx] = name;
// fill in the time and results for this locale
MyTimeData& data = my_time_data [inx];
data.locale_name_ = name;
// initialize tm with random but valid values
std::memset (&data.time_, 0, sizeof data.time_);
data.time_.tm_sec = ++j % 61;
data.time_.tm_min = ++j % 60;
data.time_.tm_hour = ++j % 12;
data.time_.tm_wday = ++j % 7;
data.time_.tm_mon = ++j % 12;
data.time_.tm_mday = ++j % 31;
data.time_.tm_yday = ++j % 366;
data.time_.tm_year = ++j;
#ifndef _RWSTD_NO_EXT_TIME_GET
// format specifiers that we can reliably parse
// get_weekday, get_monthname, get_date, get_time,
// get_year and the extension get.
const char formats [] = "aAbBCdhHjmMnRStTwxXyY";
#else
// formats that generate strings compatible with
// get_weekday, get_monthname, get_date, get_time
// and get_year.
const char formats [] = "aAbBxXyY";
#endif
// get the "random" data type used to generate representation
data.format_ = formats [nlocales % (sizeof formats - 1)];
try {
const std::locale loc (data.locale_name_);
const std::time_put<char> &np =
std::use_facet<std::time_put<char> >(loc);
const std::time_get<char> &ng =
std::use_facet<std::time_get<char> >(loc);
std::ios::iostate state = std::ios::goodbit;
nio.imbue (loc);
// put the time representation on the stream
nsb.pubsetp (data.ncs_, RW_COUNT_OF (data.ncs_));
*np.put (std::ostreambuf_iterator<char>(&nsb), nio, ' ',
&data.time_, data.format_) = '\0';
rw_fatal (!nio.fail (), __FILE__, __LINE__,
"time_put<char>::put(...) failed for locale(%#s)",
data.locale_name_);
// read the data back out. this is what the thread
// is expected to do, and the result it should get.
nsb.pubsetg (data.ncs_, RW_COUNT_OF (data.ncs_));
const std::istreambuf_iterator<char> iter (&nsb);
const std::istreambuf_iterator<char> end;
std::memset (&data.time_, 0, sizeof data.time_);
switch (data.format_) {
case 'a':
case 'A':
ng.get_weekday (iter, end, nio, state, &data.time_);
break;
case 'b':
case 'B':
case 'h':
ng.get_monthname (iter, end, nio, state, &data.time_);
break;
case 'y':
case 'Y':
ng.get_year (iter, end, nio, state, &data.time_);
break;
case 'x':
ng.get_date (iter, end, nio, state, &data.time_);
break;
case 'X':
ng.get_time (iter, end, nio, state, &data.time_);
break;
default:
#ifndef _RWSTD_NO_EXT_TIME_GET
ng.get (iter, end, nio, state, &data.time_, data.format_);
#endif // _RWSTD_NO_EXT_TIME_GET
break;
}
// we couldn't read the data back, so don't use this locale
if (state & std::ios_base::failbit)
continue;
#ifndef _RWSTD_NO_WCHAR_T
const std::time_put<wchar_t> &wp =
std::use_facet<std::time_put<wchar_t> >(loc);
wio.imbue (loc);
wsb.pubsetp (data.wcs_, RW_COUNT_OF (data.wcs_));
*wp.put (std::ostreambuf_iterator<wchar_t>(&wsb),
wio, L' ', &data.time_, data.format_) = L'\0';
rw_fatal (!wio.fail (), __FILE__, __LINE__,
"time_put<wchar_t>::put(...) failed for locale(%#s)",
data.locale_name_);
#endif // _RWSTD_NO_WCHAR_T
if (rw_opt_shared_locale)
data.locale_ = loc;
nlocales += 1;
}
catch (...) {
rw_warn (!rw_opt_locales, 0, __LINE__,
"failed to create locale(%#s)", name);
}
if (nlocales == maxinx || nlocales == std::size_t (rw_opt_nlocales))
break;
}
// avoid divide by zero in thread if there are no locales to test
rw_fatal (nlocales != 0, 0, __LINE__,
"failed to create one or more usable locales!");
rw_info (0, 0, 0,
"testing std::time_get<charT> with %d thread%{?}s%{;}, "
"%d iteration%{?}s%{;} each, in %zu locales { %{ .*A@} }",
rw_opt_nthreads, 1 != rw_opt_nthreads,
rw_opt_nloops, 1 != rw_opt_nloops,
nlocales, int (nlocales), "%#s", locales);
rw_info (0, 0, 0, "exercising std::time_get<char>");
test_char = true;
test_wchar = 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);
rw_error (result == 0, 0, __LINE__,
"rw_thread_pool(0, %d, 0, %{#f}, 0) failed",
rw_opt_nthreads, thread_func);
#ifndef _RWSTD_NO_WCHAR_T
rw_info (0, 0, 0, "exercising std::time_get<wchar_t>");
test_char = false;
test_wchar = 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);
rw_error (result == 0, 0, __LINE__,
"rw_thread_pool(0, %d, 0, %{#f}, 0) failed",
rw_opt_nthreads, thread_func);
// exercise both the char and the wchar_t specializations
// at the same time
rw_info (0, 0, 0,
"exercising both std::time_get<char> and std::time_get<wchar_t>");
test_char = true;
test_wchar = 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);
rw_error (result == 0, 0, __LINE__,
"rw_thread_pool(0, %d, 0, %{#f}, 0) failed",
rw_opt_nthreads, thread_func);
#endif // _RWSTD_NO_WCHAR_T
return result;
}
/**************************************************************************/
int main (int argc, char *argv[])
{
#ifdef _RWSTD_REENTRANT
// set nthreads to the greater of the number of processors
// and 2 (for uniprocessor systems) by default
rw_opt_nthreads = rw_get_cpus ();
if (rw_opt_nthreads < 2)
rw_opt_nthreads = 2;
#endif // _RWSTD_REENTRANT
return rw_test (argc, argv, __FILE__,
"lib.locale.time.get",
"thread safety", run_test,
"|-nloops#0 " // must be non-negative
"|-nthreads#0-* " // must be in [0, MAX_THREADS]
"|-nlocales#0 " // arg must be non-negative
"|-locales= " // must be provided
"|-shared-locale# ",
&rw_opt_nloops,
int (MAX_THREADS),
&rw_opt_nthreads,
&rw_opt_nlocales,
&rw_opt_setlocales,
&rw_opt_shared_locale);
}