1 // Copyright (c) 2011, Google Inc. 2 // All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions are 6 // met: 7 // 8 // * Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // * Redistributions in binary form must reproduce the above 11 // copyright notice, this list of conditions and the following disclaimer 12 // in the documentation and/or other materials provided with the 13 // distribution. 14 // * Neither the name of Google Inc. nor the names of its 15 // contributors may be used to endorse or promote products derived from 16 // this software without specific prior written permission. 17 // 18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 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
