Multithread problem in Named Mutexes

[Alex Sobral de Freitas <alexsobral@…>]

I was developing a test for named_mutex and the program began to close unexpectedly. The situation occurred with multiple threads simultaneously trying to create named_mutex objects. Investigating the problem more deeply I have identified that the builder tries to create the named_mutex control file (in file "/ boost_1_40_0/boost/interprocess/detail/managed_open_or_create_impl.hpp" line 264) and if the control file already exists an exception occurs, which ultimately call the operating system (FormatMessageA the file "/ boost_1_40_0/boost/interprocess/detail/win32_api.hpp" line 471) and the program quits after calling this function. This problem only occurs with multiple threads creating named_mutexes simultaneously, and I believe it is because this function OS is not multi-threaded safe.

[Alex Sobral de Freitas <alexsobral@…>]

I tried to correct the problem by using a anonymous mutex but I realized later that the problem did not occur anymore. I could no longer reproduce the problem. Maybe it was a problem specific to my machine, and a boot has resolved. I apologize for everything.