Add automatic tss cleanup to statically linked Win32 Boost.Threads library (currently works only for VC++ 7.1).

[SVN r24235]

src/pe_tls.ipp

@@ -0,0 +1,45 @@
+// (C) Copyright Aaron W. LaFramboise 2004.
+// Use, modification and distribution are subject to the 
+// Boost Software License, Version 1.0. (See accompanying file 
+// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+extern "C" void tss_cleanup_implemented(void)
+{
+    //Don't need to do anything; this function's 
+    //sole purpose is to cause a link error in cases
+    //where tss cleanup is not implemented by Boost.Threads
+    //as a reminder that user code is responsible for calling
+    //on_process_enter(), on_thread_exit(), and
+    //on_process_exit() at the appropriate times
+    //and implementing an empty tss_cleanup_implemented()
+    //function to eliminate the link error.
+}
+
+//Force a TLS directory to be generated even when static TLS is not used.
+
+extern "C" int _tls_used;
+
+int dummy() 
+{
+    return _tls_used;
+}
+
+//Report thread and process detach events.
+
+void NTAPI tls_callback  (PVOID, DWORD Reason, PVOID) 
+{
+    if(Reason == DLL_THREAD_DETACH)
+        on_thread_exit();
+    else if(Reason == DLL_PROCESS_DETACH) 
+    {
+        on_thread_exit();
+        on_process_exit();
+    }
+}
+
+// Add callback to the TLS callback list in TLS directory.
+
+#pragma data_seg(push, old_seg)
+#pragma data_seg(".CRT$XLB")
+DWORD tls_callback_ptr = (DWORD)tls_callback;
+#pragma data_seg(pop, old_seg)

src/threadmon.cpp

@@ -176,6 +176,13 @@
             }
             return TRUE;
         }
+    #elif defined(BOOST_THREAD_BUILD_LIB)
+        #if defined(BOOST_MSVC) && (BOOST_MSVC >= 1310) //1310 == VC++ 7.1
+            //As currently defined, the following is known
+            //to work only for VC++ 7.1.
+            //It is known not to work with VC 6.
+            #include <libs/thread/src/pe_tls.ipp>
+        #endif
     #endif // BOOST_THREAD_BUILD_DLL
 #endif // BOOST_HAS_WINTHREADS