Eliminate dependence on boost::interprocess #8223

In this repo, `boost::interprocess` was being used soley to make `uint32_t` operations atomic. So I replaced each instance of
`boost::interprocess::ipcdetail::atomic(...)32` with `std::atomic` methods. I replaced member declarations as applicable. For example,
when I needed to change a `volatile uint32_t` into a `std::atomic<uint32_t>`. Sometimes, a member was being used a boolean flag, so
I replaced it with `std::atomic<bool>`.

You may notice that I didn't touch `levin_client_async.h`. That is because this file is entirely unused and will be deleted in PR monero-project#8211.

Additional changes from review:
* Make some local variables const
* Change postfix operators to prefix operators where value was not need

1 files changed, 1 insertions, 2 deletions

diff --git a/contrib/epee/include/net/abstract_tcp_server2.h b/contrib/epee/include/net/abstract_tcp_server2.h
index f40cd108a..51aa9f275 100644
--- a/contrib/epee/include/net/abstract_tcp_server2.h
+++ b/contrib/epee/include/net/abstract_tcp_server2.h
@@ -49,7 +49,6 @@
 #include <boost/asio/ssl.hpp>
 #include <boost/array.hpp>
 #include <boost/enable_shared_from_this.hpp>
-#include <boost/interprocess/detail/atomic.hpp>
 #include <boost/thread/thread.hpp>
 #include "byte_slice.h"
 #include "net_utils_base.h"
@@ -393,7 +392,7 @@ namespace net_utils
     std::vector<boost::shared_ptr<boost::thread> > m_threads;
     boost::thread::id m_main_thread_id;
     critical_section m_threads_lock;
-    volatile uint32_t m_thread_index; // TODO change to std::atomic
+    std::atomic<uint32_t> m_thread_index;
 
     t_connection_type m_connection_type;