C++ pimpI mutex preventing usage of std::condicition_variable

Question

C++/CLI is known to block the mutex header when a project is compiled using the -clr:pure or clr flag. The error is reported here https://social.msdn.microsoft.com/Forums/vstudio/en-US/d4d082ff-ce43-478d-8386-0effed04b108/ccli-and-stdmutex?forum=vclanguage

The recommended solution seems to be to use the pimpI pattern. See here Turn off clr option for header file with std::mutex

The problem I see is when using other std functions. For example consider the std::condition_variable

mutexPimpI _mut;
std::unique_lock<mutexPimpI> lk(_mut); //Fine std::unique_lock is templated.
std::condition_variable _gate1;
_gate1.wait(lk); //Error wait expects std::unique_lock<std::mutex> as argument

Is there any easy way to resolve / work around this problem?

score 0 · Answer 1 · answered Dec 08 '17 at 10:48

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you can try using recursive__mutex class since objects wont be locked. https://msdn.microsoft.com/en-us/library/hh921466.aspx refer this as well.

answered Dec 08 '17 at 10:48

AlSeEcS

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The problem is you are not allowed to at all include mutex if you compile with -clr:pure flag. – Johan Dec 08 '17 at 11:45

score 0 · Accepted Answer · answered Jan 29 '18 at 10:09

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I solved it by forward declare std::condition_variable. The problem with Visual Studio's compiler for mutex includes is only for headers. Including in the source files still worked.

answered Jan 29 '18 at 10:09

Johan

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C++ pimpI mutex preventing usage of std::condicition_variable

2 Answers2