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