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28 #ifndef TALK_BASE_LATEBINDINGSYMBOLTABLE_H_
29 #define TALK_BASE_LATEBINDINGSYMBOLTABLE_H_
33 #include "talk/base/common.h"
38 typedef void *DllHandle;
40 #error Not implemented for this platform
43 // This is the base class for "symbol table" classes to simplify the dynamic
44 // loading of symbols from DLLs. Currently the implementation only supports
45 // Linux and OS X, and pure C symbols (or extern "C" symbols that wrap C++
46 // functions). Sub-classes for specific DLLs are generated via the "supermacro"
47 // files latebindingsymboltable.h.def and latebindingsymboltable.cc.def. See
48 // talk/sound/pulseaudiosymboltable.(h|cc) for an example.
49 class LateBindingSymbolTable {
54 // Array of size num_symbols.
55 const char *const *symbol_names;
58 LateBindingSymbolTable(const TableInfo *info, void **table);
59 ~LateBindingSymbolTable();
61 bool IsLoaded() const;
62 // Loads the DLL and the symbol table. Returns true iff the DLL and symbol
63 // table loaded successfully.
65 // Like load, but allows overriding the dll path for when the dll path is
67 bool LoadFromPath(const char *dll_path);
70 // Gets the raw OS handle to the DLL. Be careful what you do with it.
71 DllHandle GetDllHandle() const { return handle_; }
76 const TableInfo *info_;
79 bool undefined_symbols_;
81 DISALLOW_COPY_AND_ASSIGN(LateBindingSymbolTable);
84 } // namespace talk_base
86 #endif // TALK_BASE_LATEBINDINGSYMBOLTABLE_H_