added wxTLS_TYPE() macro

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55019 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/unix/tls.h

@@ -0,0 +1,70 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/unix/tls.h
+// Purpose:     Pthreads implementation of wxTlsValue<>
+// Author:      Vadim Zeitlin
+// Created:     2008-08-08
+// RCS-ID:      $Id$
+// Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_UNIX_TLS_H_
+#define _WX_UNIX_TLS_H_
+
+#include "wx/intl.h"
+#include "wx/log.h"
+
+#include <pthread.h>
+
+// ----------------------------------------------------------------------------
+// wxTlsKey is a helper class encapsulating the TLS value index
+// ----------------------------------------------------------------------------
+
+class wxTlsKey
+{
+public:
+    // ctor allocates a new key
+    wxTlsKey()
+    {
+        int rc = pthread_key_create(&m_key, NULL);
+        if ( rc )
+            wxLogSysError(_("Creating TLS key failed"), rc);
+    }
+
+    // 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)
+    {
+        int rc = pthread_setspecific(m_key, value);
+        if ( rc )
+        {
+            wxLogSysError(_("Failed to set TLS value"));
+            return false;
+        }
+
+        return true;
+    }
+
+    // free the key
+    ~wxTlsKey()
+    {
+        if ( IsOk() )
+            pthread_key_delete(m_key);
+    }
+
+private:
+    pthread_key_t m_key;
+
+    DECLARE_NO_COPY_CLASS(wxTlsKey)
+};
+
+#endif // _WX_UNIX_TLS_H_
+