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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is mozilla.org code.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- /* Dll
- *
- * Programmatic representation of a dll. Stores modifiedTime and size for
- * easy detection of change in dll.
- *
- * dp Suresh <dp@netscape.com>
- */
-
- #ifndef xcDll_h__
- #define xcDll_h__
-
- #include "prio.h"
- #include "prlink.h"
- #include "nsISupports.h"
- #include "nsILocalFile.h"
- #include "nsCOMPtr.h"
- #include "nsString.h"
-
- class nsNativeComponentLoader;
-
- #if defined(DEBUG) && !defined(XP_BEOS)
- #define SHOULD_IMPLEMENT_BREAKAFTERLOAD
- #endif
-
- class nsIModule;
- class nsIServiceManager;
-
- typedef enum nsDllStatus
- {
- DLL_OK = 0,
- DLL_NO_MEM = 1,
- DLL_STAT_ERROR = 2,
- DLL_NOT_FILE = 3,
- DLL_INVALID_PARAM = 4
- } nsDllStatus;
-
- class nsDll
- {
- private:
- nsCOMPtr<nsIFile> m_dllSpec;
- PRLibrary *m_instance;
- nsIModule *m_moduleObject;
- nsNativeComponentLoader *m_loader;
- PRBool m_markForUnload;
-
- void Init(nsIFile *dllSpec);
-
- #ifdef SHOULD_IMPLEMENT_BREAKAFTERLOAD
- void BreakAfterLoad(const char *nsprPath);
- #endif
-
- public:
-
- nsDll(nsIFile *dllSpec, nsNativeComponentLoader* loader);
- ~nsDll(void);
-
- // Dll Loading
- PRBool Load(void);
- PRBool Unload(void);
- PRBool IsLoaded(void)
- {
- return ((m_instance != 0) ? PR_TRUE : PR_FALSE);
- }
- void MarkForUnload(PRBool mark) { m_markForUnload = mark; }
- PRBool IsMarkedForUnload(void) { return m_markForUnload; }
-
- // Shutdown the dll. This will call any on unload hook for the dll.
- // This wont unload the dll. Unload() implicitly calls Shutdown().
- nsresult Shutdown(void);
-
- void *FindSymbol(const char *symbol);
-
- PRBool HasChanged(void);
-
- void GetDisplayPath(nsACString& string);
-
- PRLibrary *GetInstance(void) { return (m_instance); }
-
- // NS_RELEASE() is required to be done on objects returned
- nsresult GetDllSpec(nsIFile **dllSpec);
- nsresult GetModule(nsISupports *servMgr, nsIModule **mobj);
- };
-
- #endif /* xcDll_h__ */
-