Deallocate wxThreadSpecificInfo when wxThread ends.

Cleanup wxThreadSpecificInfo after wxThread::Entry returns to be more
memory efficient.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74834 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/private/threadinfo.h

@@ -52,6 +52,13 @@ public:
     wxLocaleUntranslatedStrings untranslatedStrings;
 #endif
 
+#if wxUSE_THREADS
+    // Cleans up storage for the current thread. Should be called when a thread
+    // is being destroyed. If it's not called, the only bad thing that happens
+    // is that the memory is deallocated later, on process termination.
+    static void ThreadCleanUp();
+#endif
+
 private:
     wxThreadSpecificInfo() : logger(NULL), loggingDisabled(false) {}
 };

include/wx/thread.h

@@ -614,6 +614,8 @@ protected:
     // of this thread.
     virtual void *Entry() = 0;
 
+    // use this to call the Entry() virtual method
+    void *CallEntry();
 
     // Callbacks which may be overridden by the derived class to perform some
     // specific actions when the thread is deleted or killed. By default they

include/wx/thrimpl.cpp

@@ -342,8 +342,16 @@ wxSemaError wxSemaphore::Post()
 // ----------------------------------------------------------------------------
 
 #include "wx/utils.h"
+#include "wx/private/threadinfo.h"
+#include "wx/scopeguard.h"
 
 void wxThread::Sleep(unsigned long milliseconds)
 {
     wxMilliSleep(milliseconds);
 }
+
+void *wxThread::CallEntry()
+{
+    wxON_BLOCK_EXIT0(wxThreadSpecificInfo::ThreadCleanUp);
+    return Entry();
+}