/[pcsx2_0.9.7]/branch/r3113_0.9.7_beta/3rdparty/wxWidgets/include/wx/dynload.h
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Contents of /branch/r3113_0.9.7_beta/3rdparty/wxWidgets/include/wx/dynload.h

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Revision 32 - (show annotations) (download)
Tue Sep 7 03:29:01 2010 UTC (9 years, 5 months ago) by william
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File size: 5300 byte(s)
branching from upstream revision (http://pcsx2.googlecode.com/svn/trunk
): r3113 to
https://svn.netsolutions.dnsalias.com/websvn/ps2/pcsx2/pcsx2_0.9.7/branch/r3113_0.9.7_beta
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: dynload.h
3 // Purpose: Dynamic loading framework
4 // Author: Ron Lee, David Falkinder, Vadim Zeitlin and a cast of 1000's
5 // (derived in part from dynlib.cpp (c) 1998 Guilhem Lavaux)
6 // Modified by:
7 // Created: 03/12/01
8 // RCS-ID: $Id: dynload.h 53135 2008-04-12 02:31:04Z VZ $
9 // Copyright: (c) 2001 Ron Lee <ron@debian.org>
10 // Licence: wxWindows licence
11 /////////////////////////////////////////////////////////////////////////////
12
13 #ifndef _WX_DYNAMICLOADER_H__
14 #define _WX_DYNAMICLOADER_H__
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 #include "wx/defs.h"
21
22 #if wxUSE_DYNAMIC_LOADER
23
24 #include "wx/dynlib.h"
25 #include "wx/hashmap.h"
26 #include "wx/module.h"
27
28 class WXDLLIMPEXP_FWD_BASE wxPluginLibrary;
29
30
31 WX_DECLARE_STRING_HASH_MAP_WITH_DECL(wxPluginLibrary *, wxDLManifest,
32 class WXDLLIMPEXP_BASE);
33 typedef wxDLManifest wxDLImports;
34
35 // ---------------------------------------------------------------------------
36 // wxPluginLibrary
37 // ---------------------------------------------------------------------------
38
39 // NOTE: Do not attempt to use a base class pointer to this class.
40 // wxDL is not virtual and we deliberately hide some of it's
41 // methods here.
42 //
43 // Unless you know exacty why you need to, you probably shouldn't
44 // instantiate this class directly anyway, use wxPluginManager
45 // instead.
46
47 class WXDLLIMPEXP_BASE wxPluginLibrary : public wxDynamicLibrary
48 {
49 public:
50
51 static wxDLImports* ms_classes; // Static hash of all imported classes.
52
53 wxPluginLibrary( const wxString &libname, int flags = wxDL_DEFAULT );
54 ~wxPluginLibrary();
55
56 wxPluginLibrary *RefLib();
57 bool UnrefLib();
58
59 // These two are called by the PluginSentinel on (PLUGGABLE) object
60 // creation/destruction. There is usually no reason for the user to
61 // call them directly. We have to separate this from the link count,
62 // since the two are not interchangeable.
63
64 // FIXME: for even better debugging PluginSentinel should register
65 // the name of the class created too, then we can state
66 // exactly which object was not destroyed which may be
67 // difficult to find otherwise. Also this code should
68 // probably only be active in DEBUG mode, but let's just
69 // get it right first.
70
71 void RefObj() { ++m_objcount; }
72 void UnrefObj()
73 {
74 wxASSERT_MSG( m_objcount > 0, _T("Too many objects deleted??") );
75 --m_objcount;
76 }
77
78 // Override/hide some base class methods
79
80 bool IsLoaded() const { return m_linkcount > 0; }
81 void Unload() { UnrefLib(); }
82
83 private:
84
85 wxClassInfo *m_before; // sm_first before loading this lib
86 wxClassInfo *m_after; // ..and after.
87
88 size_t m_linkcount; // Ref count of library link calls
89 size_t m_objcount; // ..and (pluggable) object instantiations.
90 wxModuleList m_wxmodules; // any wxModules that we initialised.
91
92 void UpdateClasses(); // Update ms_classes
93 void RestoreClasses(); // Removes this library from ms_classes
94 void RegisterModules(); // Init any wxModules in the lib.
95 void UnregisterModules(); // Cleanup any wxModules we installed.
96
97 DECLARE_NO_COPY_CLASS(wxPluginLibrary)
98 };
99
100
101 class WXDLLIMPEXP_BASE wxPluginManager
102 {
103 public:
104
105 // Static accessors.
106
107 static wxPluginLibrary *LoadLibrary( const wxString &libname,
108 int flags = wxDL_DEFAULT );
109 static bool UnloadLibrary(const wxString &libname);
110
111 // Instance methods.
112
113 wxPluginManager() : m_entry(NULL) {}
114 wxPluginManager(const wxString &libname, int flags = wxDL_DEFAULT)
115 {
116 Load(libname, flags);
117 }
118 ~wxPluginManager() { if ( IsLoaded() ) Unload(); }
119
120 bool Load(const wxString &libname, int flags = wxDL_DEFAULT);
121 void Unload();
122
123 bool IsLoaded() const { return m_entry && m_entry->IsLoaded(); }
124 void *GetSymbol(const wxString &symbol, bool *success = 0)
125 {
126 return m_entry->GetSymbol( symbol, success );
127 }
128
129 static void CreateManifest() { ms_manifest = new wxDLManifest(wxKEY_STRING); }
130 static void ClearManifest() { delete ms_manifest; ms_manifest = NULL; }
131
132 private:
133 // return the pointer to the entry for the library with given name in
134 // ms_manifest or NULL if none
135 static wxPluginLibrary *FindByName(const wxString& name)
136 {
137 const wxDLManifest::iterator i = ms_manifest->find(name);
138
139 return i == ms_manifest->end() ? NULL : i->second;
140 }
141
142 static wxDLManifest* ms_manifest; // Static hash of loaded libs.
143 wxPluginLibrary* m_entry; // Cache our entry in the manifest.
144
145 // We could allow this class to be copied if we really
146 // wanted to, but not without modification.
147 DECLARE_NO_COPY_CLASS(wxPluginManager)
148 };
149
150
151 #endif // wxUSE_DYNAMIC_LOADER
152 #endif // _WX_DYNAMICLOADER_H__
153

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