src/common/threadinfo.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/threadinfo.cpp
   3 // Purpose:     declaration of wxThreadSpecificInfo: thread-specific information
   4 // Author:      Vaclav Slavik
   5 // Created:     2013-09-14
   6 // Copyright:   (c) 2013 Vaclav Slavik <vslavik@fastmail.fm>
   7 // Licence:     wxWindows licence
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if defined(__BORLANDC__)
  14     #pragma hdrstop
  15 #endif
  16
  17 #include "wx/private/threadinfo.h"
  18
  19 #if wxUSE_THREADS
  20
  21 #include "wx/tls.h"
  22 #include "wx/thread.h"
  23 #include "wx/sharedptr.h"
  24 #include "wx/vector.h"
  25
  26 namespace
  27 {
  28
  29 // All thread info objects are stored in a global list so that they are
  30 // freed when global objects are destroyed and no memory leaks are reported.
  31 //
  32 // TODO: This could be made more efficient by freeing g_thisThreadInfo when
  33 //       wxThread terminates.
  34 wxCriticalSection g_csAllThreadInfos;
  35 wxVector< wxSharedPtr<wxThreadSpecificInfo> > g_allThreadInfos;
  36
  37 // Pointer to currenct thread's instance
  38 wxTLS_TYPE(wxThreadSpecificInfo*) g_thisThreadInfo;
  39
  40 } // anonymous namespace
  41
  42
  43 wxThreadSpecificInfo& wxThreadSpecificInfo::Get()
  44 {
  45     if ( !wxTLS_VALUE(g_thisThreadInfo) )
  46     {
  47         wxTLS_VALUE(g_thisThreadInfo) = new wxThreadSpecificInfo;
  48         wxCriticalSectionLocker lock(g_csAllThreadInfos);
  49         g_allThreadInfos.push_back(
  50                 wxSharedPtr<wxThreadSpecificInfo>(wxTLS_VALUE(g_thisThreadInfo)));
  51     }
  52     return *wxTLS_VALUE(g_thisThreadInfo);
  53 }
  54
  55 #else // !wxUSE_THREADS
  56
  57 wxThreadSpecificInfo& wxThreadSpecificInfo::Get()
  58 {
  59     static wxThreadSpecificInfo s_instance;
  60     return s_instance;
  61 }
  62
  63 #endif // wxUSE_THREADS/wxUSE_THREADS