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118 lines
3.4 KiB
C++
118 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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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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#include "prio.h"
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#include "prlink.h"
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#include "nsISupports.h"
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#ifndef xcDll_h__
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#define xcDll_h__
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class nsIFileSpec;
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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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char *m_dllName; // Stores the dllName to load.
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nsIFileSpec *m_dllSpec; // Filespec representing the component
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PRUint32 m_modDate; // last modified time at creation of this object
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PRUint32 m_size; // size of the dynamic library at creation of this object
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PRLibrary *m_instance; // Load instance
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nsDllStatus m_status; // holds current status
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nsIModule *m_moduleObject;
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// Cache frequent queries
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char *m_persistentDescriptor;
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char *m_nativePath;
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PRBool m_markForUnload;
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char *m_registryLocation;
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void Init(nsIFileSpec *dllSpec);
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void Init(const char *persistentDescriptor);
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public:
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nsDll(nsIFileSpec *dllSpec, const char *registryLocation);
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nsDll(nsIFileSpec *dllSpec, const char *registryLocation, PRUint32 modDate, PRUint32 fileSize);
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nsDll(const char *persistentDescriptor);
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nsDll(const char *persistentDescriptor, PRUint32 modDate, PRUint32 fileSize);
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nsDll(const char *dll, int type /* dummy */);
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~nsDll(void);
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// Sync : Causes update of file information
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nsresult Sync(void);
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// Status checking on operations completed
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nsDllStatus GetStatus(void) { return (m_status); }
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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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// WARNING: DONT FREE string returned.
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const char *GetNativePath(void);
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// WARNING: DONT FREE string returned.
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const char *GetPersistentDescriptorString(void);
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PRUint32 GetLastModifiedTime(void) { return(m_modDate); }
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PRUint32 GetSize(void) { return(m_size); }
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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(nsIFileSpec **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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