1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
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2 | /* ***** BEGIN LICENSE BLOCK ***** |
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3 | * Version: NPL 1.1/GPL 2.0/LGPL 2.1 |
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4 | * |
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5 | * The contents of this file are subject to the Netscape Public License |
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6 | * Version 1.1 (the "License"); you may not use this file except in |
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7 | * compliance with the License. You may obtain a copy of the License at |
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8 | * http://www.mozilla.org/NPL/ |
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9 | * |
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10 | * Software distributed under the License is distributed on an "AS IS" basis, |
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11 | * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
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12 | * for the specific language governing rights and limitations under the |
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13 | * License. |
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14 | * |
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15 | * The Original Code is mozilla.org code. |
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16 | * |
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17 | * The Initial Developer of the Original Code is |
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18 | * Netscape Communications Corporation. |
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19 | * Portions created by the Initial Developer are Copyright (C) 1998 |
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20 | * the Initial Developer. All Rights Reserved. |
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21 | * |
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22 | * Contributor(s): |
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23 | * |
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24 | * Alternatively, the contents of this file may be used under the terms of |
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25 | * either the GNU General Public License Version 2 or later (the "GPL"), or |
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26 | * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
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27 | * in which case the provisions of the GPL or the LGPL are applicable instead |
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28 | * of those above. If you wish to allow use of your version of this file only |
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29 | * under the terms of either the GPL or the LGPL, and not to allow others to |
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30 | * use your version of this file under the terms of the NPL, indicate your |
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31 | * decision by deleting the provisions above and replace them with the notice |
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32 | * and other provisions required by the GPL or the LGPL. If you do not delete |
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33 | * the provisions above, a recipient may use your version of this file under |
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34 | * the terms of any one of the NPL, the GPL or the LGPL. |
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35 | * |
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36 | * ***** END LICENSE BLOCK ***** */ |
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37 | |
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38 | /* Dll |
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39 | * |
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40 | * Programmatic representation of a dll. Stores modifiedTime and size for |
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41 | * easy detection of change in dll. |
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42 | * |
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43 | * dp Suresh <dp@netscape.com> |
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44 | */ |
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45 | |
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46 | #ifndef xcDll_h__ |
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47 | #define xcDll_h__ |
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48 | |
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49 | #include "prio.h" |
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50 | #include "prlink.h" |
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51 | #include "nsISupports.h" |
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52 | #include "nsILocalFile.h" |
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53 | #include "nsCOMPtr.h" |
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54 | #include "nsString.h" |
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55 | |
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56 | class nsNativeComponentLoader; |
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57 | |
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58 | #if defined(DEBUG) && !defined(XP_BEOS) |
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59 | #define SHOULD_IMPLEMENT_BREAKAFTERLOAD |
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60 | #endif |
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61 | |
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62 | class nsIModule; |
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63 | class nsIServiceManager; |
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64 | |
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65 | typedef enum nsDllStatus |
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66 | { |
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67 | DLL_OK = 0, |
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68 | DLL_NO_MEM = 1, |
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69 | DLL_STAT_ERROR = 2, |
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70 | DLL_NOT_FILE = 3, |
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71 | DLL_INVALID_PARAM = 4 |
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72 | } nsDllStatus; |
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73 | |
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74 | class nsDll |
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75 | { |
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76 | private: |
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77 | nsCOMPtr<nsIFile> m_dllSpec; |
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78 | PRLibrary *m_instance; |
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79 | nsIModule *m_moduleObject; |
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80 | nsNativeComponentLoader *m_loader; |
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81 | PRBool m_markForUnload; |
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82 | |
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83 | void Init(nsIFile *dllSpec); |
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84 | |
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85 | #ifdef SHOULD_IMPLEMENT_BREAKAFTERLOAD |
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86 | void BreakAfterLoad(const char *nsprPath); |
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87 | #endif |
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88 | |
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89 | public: |
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90 | |
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91 | nsDll(nsIFile *dllSpec, nsNativeComponentLoader* loader); |
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92 | ~nsDll(void); |
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93 | |
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94 | // Dll Loading |
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95 | PRBool Load(void); |
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96 | PRBool Unload(void); |
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97 | PRBool IsLoaded(void) |
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98 | { |
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99 | return ((m_instance != 0) ? PR_TRUE : PR_FALSE); |
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100 | } |
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101 | void MarkForUnload(PRBool mark) { m_markForUnload = mark; } |
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102 | PRBool IsMarkedForUnload(void) { return m_markForUnload; } |
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103 | |
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104 | // Shutdown the dll. This will call any on unload hook for the dll. |
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105 | // This wont unload the dll. Unload() implicitly calls Shutdown(). |
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106 | nsresult Shutdown(void); |
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107 | |
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108 | void *FindSymbol(const char *symbol); |
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109 | |
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110 | PRBool HasChanged(void); |
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111 | |
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112 | void GetDisplayPath(nsACString& string); |
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113 | |
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114 | PRLibrary *GetInstance(void) { return (m_instance); } |
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115 | |
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116 | // NS_RELEASE() is required to be done on objects returned |
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117 | nsresult GetDllSpec(nsIFile **dllSpec); |
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118 | nsresult GetModule(nsISupports *servMgr, nsIModule **mobj); |
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119 | }; |
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120 | |
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121 | #endif /* xcDll_h__ */ |
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