Add wx headers and ext

wxheaders/wx/unix/tls.h

@@ -0,0 +1,65 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/unix/tls.h
+// Purpose:     Pthreads implementation of wxTlsValue<>
+// Author:      Vadim Zeitlin
+// Created:     2008-08-08
+// Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_UNIX_TLS_H_
+#define _WX_UNIX_TLS_H_
+
+#include <pthread.h>
+
+// ----------------------------------------------------------------------------
+// wxTlsKey is a helper class encapsulating the TLS value index
+// ----------------------------------------------------------------------------
+
+class wxTlsKey
+{
+public:
+    // ctor allocates a new key and possibly registering a destructor function
+    // for it
+    wxTlsKey(wxTlsDestructorFunction destructor)
+    {
+        m_destructor = destructor;
+        if ( pthread_key_create(&m_key, destructor) != 0 )
+            m_key = 0;
+    }
+
+    // return true if the key was successfully allocated
+    bool IsOk() const { return m_key != 0; }
+
+    // get the key value, there is no error return
+    void *Get() const
+    {
+        return pthread_getspecific(m_key);
+    }
+
+    // change the key value, return true if ok
+    bool Set(void *value)
+    {
+        void *old = Get();
+        if ( old )
+            m_destructor(old);
+
+        return pthread_setspecific(m_key, value) == 0;
+    }
+
+    // free the key
+    ~wxTlsKey()
+    {
+        if ( IsOk() )
+            pthread_key_delete(m_key);
+    }
+
+private:
+    wxTlsDestructorFunction m_destructor;
+    pthread_key_t m_key;
+
+    wxDECLARE_NO_COPY_CLASS(wxTlsKey);
+};
+
+#endif // _WX_UNIX_TLS_H_
+