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Use call_once in test code to avoid race condition which may otherwise occur.

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[SVN r65702]
This commit is contained in:
John Maddock
2010-10-01 08:03:51 +00:00
parent 383f3b2144
commit 77771ee209
1 changed files with 19 additions and 0 deletions
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19
test/regress/test.hpp
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@ -36,6 +36,9 @@
#include "test_icu.hpp"
#include "test_locale.hpp"
#ifdef TEST_THREADS
#include <boost/thread/once.hpp>
#endif
//
// define test entry proc, this forwards on to the appropriate
@ -62,6 +65,16 @@ void test(const wchar_t&, const test_regex_search_tag&);
void test(const wchar_t&, const test_invalid_regex_tag&);
#endif
template <class Regex>
struct call_once_func
{
Regex* pregex;
void operator()()const
{
return test_empty(*pregex);
}
};
template <class charT, class tagT>
void do_test(const charT& c, const tagT& tag)
{
@ -73,12 +86,18 @@ void do_test(const charT& c, const tagT& tag)
test_info<charT>::set_typename(typeid(boost::basic_regex<charT, boost::cpp_regex_traits<charT> >).name());
#endif
boost::basic_regex<charT, boost::cpp_regex_traits<charT> > e1;
#ifndef TEST_THREADS
static bool done_empty_test = false;
if(done_empty_test == false)
{
test_empty(e1);
done_empty_test = true;
}
#else
boost::once_flag f = BOOST_ONCE_INIT;
call_once_func<boost::basic_regex<charT, boost::cpp_regex_traits<charT> > > proc = { &e1 };
boost::call_once(f, proc);
#endif
if(test_locale::cpp_locale_state() == test_locale::test_with_locale)
e1.imbue(test_locale::cpp_locale());
if(test_locale::cpp_locale_state() != test_locale::no_test)