1// Copyright (c) 2006, Google Inc.
2// All rights reserved.
3//
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17//
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29
30// The caller may implement the SymbolSupplier abstract base class
31// to provide symbols for a given module.
32
33#ifndef GOOGLE_BREAKPAD_PROCESSOR_SYMBOL_SUPPLIER_H__
34#define GOOGLE_BREAKPAD_PROCESSOR_SYMBOL_SUPPLIER_H__
35
36#include <string>
37#include "common/using_std_string.h"
38
39namespace google_breakpad {
40
41class CodeModule;
42struct SystemInfo;
43
44class SymbolSupplier {
45 public:
46 // Result type for GetSymbolFile
47 enum SymbolResult {
48 // no symbols were found, but continue processing
49 NOT_FOUND,
50
51 // symbols were found, and the path has been placed in symbol_file
52 FOUND,
53
54 // stops processing the minidump immediately
55 INTERRUPT
56 };
57
58 virtual ~SymbolSupplier() {}
59
60 // Retrieves the symbol file for the given CodeModule, placing the
61 // path in symbol_file if successful. system_info contains strings
62 // identifying the operating system and CPU; SymbolSupplier may use
63 // to help locate the symbol file. system_info may be NULL or its
64 // fields may be empty if these values are unknown. symbol_file
65 // must be a pointer to a valid string
66 virtual SymbolResult GetSymbolFile(const CodeModule* module,
67 const SystemInfo* system_info,
68 string* symbol_file) = 0;
69 // Same as above, except also places symbol data into symbol_data.
70 // If symbol_data is NULL, the data is not returned.
71 // TODO(nealsid) Once we have symbol data caching behavior implemented
72 // investigate making all symbol suppliers implement all methods,
73 // and make this pure virtual
74 virtual SymbolResult GetSymbolFile(const CodeModule* module,
75 const SystemInfo* system_info,
76 string* symbol_file,
77 string* symbol_data) = 0;
78
79 // Same as above, except allocates data buffer on heap and then places the
80 // symbol data into the buffer as C-string.
81 // SymbolSupplier is responsible for deleting the data buffer. After the call
82 // to GetCStringSymbolData(), the caller should call FreeSymbolData(const
83 // Module* module) once the data buffer is no longer needed.
84 // If symbol_data is not NULL, symbol supplier won't return FOUND unless it
85 // returns a valid buffer in symbol_data, e.g., returns INTERRUPT on memory
86 // allocation failure.
87 virtual SymbolResult GetCStringSymbolData(const CodeModule* module,
88 const SystemInfo* system_info,
89 string* symbol_file,
90 char** symbol_data,
91 size_t* symbol_data_size) = 0;
92
93 // Frees the data buffer allocated for the module in GetCStringSymbolData.
94 virtual void FreeSymbolData(const CodeModule* module) = 0;
95};
96
97} // namespace google_breakpad
98
99#endif // GOOGLE_BREAKPAD_PROCESSOR_SYMBOL_SUPPLIER_H__
100