Make storing non-trivial data in wxThreadSpecificInfo possible.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74832 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/threadinfo.cpp

@@ -0,0 +1,63 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        src/common/threadinfo.cpp
+// Purpose:     declaration of wxThreadSpecificInfo: thread-specific information
+// Author:      Vaclav Slavik
+// Created:     2013-09-14
+// Copyright:   (c) 2013 Vaclav Slavik <vslavik@fastmail.fm>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#if defined(__BORLANDC__)
+    #pragma hdrstop
+#endif
+
+#include "wx/private/threadinfo.h"
+
+#if wxUSE_THREADS
+
+#include "wx/tls.h"
+#include "wx/thread.h"
+#include "wx/sharedptr.h"
+#include "wx/vector.h"
+
+namespace
+{
+
+// All thread info objects are stored in a global list so that they are
+// freed when global objects are destroyed and no memory leaks are reported.
+//
+// TODO: This could be made more efficient by freeing g_thisThreadInfo when
+//       wxThread terminates.
+wxCriticalSection g_csAllThreadInfos;
+wxVector< wxSharedPtr<wxThreadSpecificInfo> > g_allThreadInfos;
+
+// Pointer to currenct thread's instance
+wxTLS_TYPE(wxThreadSpecificInfo*) g_thisThreadInfo;
+
+} // anonymous namespace
+
+
+wxThreadSpecificInfo& wxThreadSpecificInfo::Get()
+{
+    if ( !wxTLS_VALUE(g_thisThreadInfo) )
+    {
+        wxTLS_VALUE(g_thisThreadInfo) = new wxThreadSpecificInfo;
+        wxCriticalSectionLocker lock(g_csAllThreadInfos);
+        g_allThreadInfos.push_back(
+                wxSharedPtr<wxThreadSpecificInfo>(wxTLS_VALUE(g_thisThreadInfo)));
+    }
+    return *wxTLS_VALUE(g_thisThreadInfo);
+}
+
+#else // !wxUSE_THREADS
+
+wxThreadSpecificInfo& wxThreadSpecificInfo::Get()
+{
+    static wxThreadSpecificInfo s_instance;
+    return s_instance;
+}
+
+#endif // wxUSE_THREADS/wxUSE_THREADS