boost::interprocess::named_condition compile error on Visual Studio 2022

[AlexisLeConte]

I am not able to compile this minimal example program on Visual Studio 2022 (v17.7.6) with Boost 1.83.0:

#include <boost/interprocess/sync/named_mutex.hpp>
#include <boost/interprocess/sync/named_condition.hpp>
#include <boost/interprocess/sync/scoped_lock.hpp>
#include <boost/chrono/chrono.hpp>

int main()
{
    boost::interprocess::named_mutex mtx(boost::interprocess::open_only, "mtx");
    boost::interprocess::named_condition cv(boost::interprocess::open_only, "cv");
    boost::interprocess::scoped_lock<boost::interprocess::named_mutex> lock(mtx);
    if (cv.wait_for(mtx, boost::chrono::milliseconds(100)) == boost::interprocess::cv_status::timeout) // build error
    {
        return 1;
    }
    return 0;
}

Build output:

>------ Build All started: Project: interprocess_named_mutex_minimal, Configuration: windows-x64-windows-x64 ------
  MSBuild version 17.7.2+d6990bcfa for .NET Framework

    main.cpp
D:\Code\Libraries\boost_1_83_0\boost\interprocess\sync\detail\locks.hpp(35,27): error C3083: 'mutex_type': the symbol to the left of a '::' must be a type 
  D:\Code\Libraries\boost_1_83_0\boost/interprocess/sync/named_condition.hpp(264,38): message : see reference to class template instantiation 'boost::interprocess::ipcdetail::internal_mutex_lock<L>' being compiled [D:\Code\interprocess_named_mutex_minimal\build_x64\minimal_example.vcxproj]
            with
            [
                L=boost::interprocess::named_mutex
            ]
  D:\Code\Libraries\boost_1_83_0\boost/interprocess/sync/named_condition.hpp(156,18): message : see reference to function template instantiation 'bool boost::interprocess::named_condition::timed_wait<L,TimePoint>(L &,const TimePoint &)' being compiled [D:\Code\interprocess_named_mutex_minimal\build_x64\minimal_example.vcxproj]
            with
            [
                L=boost::interprocess::named_mutex,
                TimePoint=boost::interprocess::ipcdetail::ustime
            ]
  D:\Code\Libraries\boost_1_83_0\boost/interprocess/sync/named_condition.hpp(168,18): message : see reference to function template instantiation 'boost::interprocess::cv_status boost::interprocess::named_condition::wait_until<L,boost::interprocess::ipcdetail::ustime>(L &,const TimePoint &)' being compiled [D:\Code\interprocess_named_mutex_minimal\build_x64\minimal_example.vcxproj]
            with
            [
                L=boost::interprocess::named_mutex,
                TimePoint=boost::interprocess::ipcdetail::ustime
            ]
  D:\Code\interprocess_named_mutex_minimal\main.cpp(11,11): message : see reference to function template instantiation 'boost::interprocess::cv_status boost::interprocess::named_condition::wait_for<boost::interprocess::named_mutex,boost::chrono::milliseconds>(L &,const Duration &)' being compiled [D:\Code\interprocess_named_mutex_minimal\build_x64\minimal_example.vcxproj]
            with
            [
                L=boost::interprocess::named_mutex,
                Duration=boost::chrono::milliseconds
            ]

Build All failed.

CMakeLists.txt:

cmake_minimum_required (VERSION 3.22)
project (minimal_example)

set (CMAKE_CXX_STANDARD 20)
set (CMAKE_CXX_STANDARD_REQUIRED TRUE)

set (BOOST_ROOT "" CACHE PATH "Preferred Boost root directory")
set (BOOST_INCLUDEDIR "" CACHE PATH "Preferred Boost include directory")
set (BOOST_LIBRARYDIR "" CACHE PATH "Preferred Boost library directory")
find_package (Boost 1.83.0 REQUIRED COMPONENTS system chrono date_time)

add_executable (minimal_example main.cpp)
target_link_libraries (minimal_example PRIVATE Boost::headers Boost::system Boost::chrono Boost::date_time)

# Visual Studio seems to have trouble finding the Boost library directory
target_link_directories (minimal_example PRIVATE ${BOOST_LIBRARYDIR})

[igaztanaga]

The problem is that cv.wait_for expects a Lock as the first parameter, and you are passing a mutex, not a Lock. If you change:

if (cv.wait_for(mtx,

with

if (cv.wait_for(lock, ....

it will work.