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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__ */
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