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named_thread: allow default constructor only with thread_name

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In C++20, lambdas may be default-constructible allowing nasty stuff.
This commit is contained in:
Nekotekina 2020-02-26 21:00:10 +03:00
parent e102dc2a94
commit a0d2bc9769
1 changed files with 2 additions and 14 deletions
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16
Utilities/Thread.h
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@ -361,26 +361,14 @@ class named_thread final : public Context, result_storage_t<Context>, thread_bas
return thread::finalize(0);
}
static decltype(auto) get_default_thread_name()
{
if constexpr (thread_thread_name<Context>())
{
return Context::thread_name;
}
else
{
return "Unnamed Thread";
}
}
friend class thread_ctrl;
public:
// Default constructor
template <bool Valid = std::is_default_constructible_v<Context>, typename = std::enable_if_t<Valid>>
template <bool Valid = std::is_default_constructible_v<Context> && thread_thread_name<Context>(), typename = std::enable_if_t<Valid>>
named_thread()
: Context()
, thread(get_default_thread_name())
, thread(Context::thread_name)
{
thread::start(&named_thread::entry_point);
}