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1 // Copyright (c) 2006, 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 // basic_code_modules.h: Contains all of the CodeModule objects that
31 // were loaded into a single process.
32 //
33 // This is a basic concrete implementation of CodeModules.  It cannot be
34 // instantiated directly, only based on other objects that implement
35 // the CodeModules interface.  It exists to provide a CodeModules
36 // implementation a place to store information when the life of the original
37 // object (such as a MinidumpModuleList) cannot be guaranteed.
38 //
39 // Author: Mark Mentovai
40 
41 #ifndef PROCESSOR_BASIC_CODE_MODULES_H__
42 #define PROCESSOR_BASIC_CODE_MODULES_H__
43 
44 #include <stddef.h>
45 
46 #include <vector>
47 
48 #include "google_breakpad/processor/code_modules.h"
49 #include "processor/linked_ptr.h"
50 #include "processor/range_map.h"
51 
52 namespace google_breakpad {
53 
54 class BasicCodeModules : public CodeModules {
55  public:
56   // Creates a new BasicCodeModules object given any existing CodeModules
57   // implementation.  This is useful to make a copy of the data relevant to
58   // the CodeModules and CodeModule interfaces without requiring all of the
59   // resources that other implementations may require.  A copy will be
60   // made of each contained CodeModule using CodeModule::Copy.
61   BasicCodeModules(const CodeModules *that, MergeRangeStrategy strategy);
62 
63   virtual ~BasicCodeModules();
64 
65   // See code_modules.h for descriptions of these methods.
66   virtual unsigned int module_count() const;
67   virtual const CodeModule* GetModuleForAddress(uint64_t address) const;
68   virtual const CodeModule* GetMainModule() const;
69   virtual const CodeModule* GetModuleAtSequence(unsigned int sequence) const;
70   virtual const CodeModule* GetModuleAtIndex(unsigned int index) const;
71   virtual const CodeModules* Copy() const;
72   virtual std::vector<linked_ptr<const CodeModule> >
73   GetShrunkRangeModules() const;
74 
75  protected:
76   BasicCodeModules();
77 
78   // The base address of the main module.
79   uint64_t main_address_;
80 
81   // The map used to contain each CodeModule, keyed by each CodeModule's
82   // address range.
83   RangeMap<uint64_t, linked_ptr<const CodeModule> > map_;
84 
85   // A vector of all CodeModules that were shrunk downs due to
86   // address range conflicts.
87   std::vector<linked_ptr<const CodeModule> > shrunk_range_modules_;
88 
89  private:
90   // Disallow copy constructor and assignment operator.
91   BasicCodeModules(const BasicCodeModules &that);
92   void operator=(const BasicCodeModules &that);
93 };
94 
95 }  // namespace google_breakpad
96 
97 #endif  // PROCESSOR_BASIC_CODE_MODULES_H__
98