1 | // Copyright (c) 2011, Google Inc. |
2 | // All rights reserved. |
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5 | // modification, are permitted provided that the following conditions are |
6 | // met: |
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29 | |
30 | // minidump_memory_range.h: Define the google_breakpad::MinidumpMemoryRange |
31 | // class, which adds methods for handling minidump specific data structures |
32 | // on top of google_breakpad::MemoryRange. See common/memory_range.h for |
33 | // more details on MemoryRange. |
34 | |
35 | #ifndef TOOLS_LINUX_MD2CORE_MINIDUMP_MEMORY_RANGE_H_ |
36 | #define TOOLS_LINUX_MD2CORE_MINIDUMP_MEMORY_RANGE_H_ |
37 | |
38 | #include <string> |
39 | |
40 | #include "common/memory_range.h" |
41 | #include "google_breakpad/common/minidump_format.h" |
42 | |
43 | namespace google_breakpad { |
44 | |
45 | // A derived class of MemoryRange with added methods for handling minidump |
46 | // specific data structures. To avoid virtual functions, it is not designed |
47 | // to be used polymorphically. |
48 | class MinidumpMemoryRange : public MemoryRange { |
49 | public: |
50 | MinidumpMemoryRange() {} |
51 | |
52 | MinidumpMemoryRange(const void* data, size_t length) |
53 | : MemoryRange(data, length) {} |
54 | |
55 | // Returns a subrange of |length| bytes at |offset| bytes of this memory |
56 | // range, or an empty range if the subrange is out of bounds. |
57 | // This methods overrides the base implemementation in order to return |
58 | // an instance of MinidumpMemoryRange instead of MemoryRange. |
59 | MinidumpMemoryRange Subrange(size_t sub_offset, size_t sub_length) const { |
60 | if (Covers(sub_offset, sub_length)) |
61 | return MinidumpMemoryRange(data() + sub_offset, sub_length); |
62 | return MinidumpMemoryRange(); |
63 | } |
64 | |
65 | // Returns a subrange that covers the offset and length specified by |
66 | // |location|, or an empty range if the subrange is out of bounds. |
67 | MinidumpMemoryRange Subrange(const MDLocationDescriptor& location) const { |
68 | return MinidumpMemoryRange::Subrange(location.rva, location.data_size); |
69 | } |
70 | |
71 | // Gets a STL string from a MDString at |sub_offset| bytes of this memory |
72 | // range. This method only works correctly for ASCII characters and does |
73 | // not convert between UTF-16 and UTF-8. |
74 | const std::string GetAsciiMDString(size_t sub_offset) const { |
75 | std::string str; |
76 | const MDString* md_str = GetData<MDString>(sub_offset); |
77 | if (md_str) { |
78 | const uint16_t* buffer = &md_str->buffer[0]; |
79 | for (uint32_t i = 0; i < md_str->length && buffer[i]; ++i) { |
80 | str.push_back(buffer[i]); |
81 | } |
82 | } |
83 | return str; |
84 | } |
85 | }; |
86 | |
87 | } // namespace google_breakpad |
88 | |
89 | #endif // TOOLS_LINUX_MD2CORE_MINIDUMP_MEMORY_RANGE_H_ |
90 | |