Does MinGW-w64 support std::thread out of the box when using the Win32 threading model?

问题

I have opted for the Win32 threading model when installing the MinGW-w64 toolchain, after reading that it provides better performance than the POSIX counterpart. I am not qualified for benchmarking this claim myself, but here\'s a source for it.

At first I thought this option would only affect the inner workings of the GCC runtime, while not preventing me from using C++11 threads in my code, based on this answer and this comment by fellow user rubenvb.
However, this doesn\'t seem to be the case. std::thread support appears to be non-existent in this MinGW-w64 installation.

I am invoking g++ from the command line with no options other than -std=c++11.

At this point I\'m not sure if:

• rubenvb was wrong, and it\'s actually necessary to install MinGW-w64 under the POSIX threading model in order to compile my code which depends on the C++11 thread library, or;
• I completely misunderstood it all, or;
• std::thread is actually supported in my scenario, it\'s just not intuitive.

I reinforce the \"out of the box\" part in the title. There exists a library called mingw-std-threads, as presented in this answer. However, as a third-party option, it is not relevant to this question.

So, as of today (May 2016), does MinGW-w64 nativelly support std::thread depending code, when installed with the Win32 internal threading model?

回答1:

To use the MinGW-w64 with Win32 native threads you can install the mingw-std-threads headers.

As described on that page, this is because MinGW-w64 is a port of GCC, but GCC does not include any native thread support. Instead GCC installations typically implement threading via either gthreads or pthreads as a part of glibc. MinGW-w64 does not include a port of glibc. (Instead it uses a combination of the MSVC runtime, plus its own code to fill in holes).

Also as described on that page, recent versions of MinGW-w64 do include a Win32 port of pthreads ("winpthreads"), which explains why you can have threads work "out of the box" by selecting the "pthread" model from the MinGW-w64 installer.

来源：https://stackoverflow.com/questions/37358856/does-mingw-w64-support-stdthread-out-of-the-box-when-using-the-win32-threading