* Added breakpad support for Linux.

thirdparty/breakpad/processor/simple_symbol_supplier.h

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+// Copyright (c) 2006, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// simple_symbol_supplier.h: A simple SymbolSupplier implementation
+//
+// SimpleSymbolSupplier is a straightforward implementation of SymbolSupplier
+// that stores symbol files in a filesystem tree.  A SimpleSymbolSupplier is
+// created with one or more base directories, which are the root paths for all
+// symbol files.  Each symbol file contained therein has a directory entry in
+// the base directory with a name identical to the corresponding debugging 
+// file (pdb).  Within each of these directories, there are subdirectories
+// named for the debugging file's identifier.  For recent pdb files, this is
+// a concatenation of the pdb's uuid and age, presented in hexadecimal form,
+// without any dashes or separators.  The uuid is in uppercase hexadecimal
+// and the age is in lowercase hexadecimal.  Within that subdirectory,
+// SimpleSymbolSupplier expects to find the symbol file, which is named
+// identically to the debug file, but with a .sym extension.  If the original
+// debug file had a name ending in .pdb, the .pdb extension will be replaced
+// with .sym.  This sample hierarchy is rooted at the "symbols" base
+// directory:
+//
+// symbols
+// symbols/test_app.pdb
+// symbols/test_app.pdb/63FE4780728D49379B9D7BB6460CB42A1
+// symbols/test_app.pdb/63FE4780728D49379B9D7BB6460CB42A1/test_app.sym
+// symbols/kernel32.pdb
+// symbols/kernel32.pdb/BCE8785C57B44245A669896B6A19B9542
+// symbols/kernel32.pdb/BCE8785C57B44245A669896B6A19B9542/kernel32.sym
+//
+// In this case, the uuid of test_app.pdb is
+// 63fe4780-728d-4937-9b9d-7bb6460cb42a and its age is 1.
+//
+// This scheme was chosen to be roughly analogous to the way that
+// symbol files may be accessed from Microsoft Symbol Server.  A hierarchy
+// used for Microsoft Symbol Server storage is usable as a hierarchy for
+// SimpleSymbolServer, provided that the pdb files are transformed to dumped
+// format using a tool such as dump_syms, and given a .sym extension.
+//
+// SimpleSymbolSupplier will iterate over all root paths searching for
+// a symbol file existing in that path.
+//
+// SimpleSymbolSupplier supports any debugging file which can be identified
+// by a CodeModule object's debug_file and debug_identifier accessors.  The
+// expected ultimate source of these CodeModule objects are MinidumpModule
+// objects; it is this class that is responsible for assigning appropriate
+// values for debug_file and debug_identifier.
+//
+// Author: Mark Mentovai
+
+#ifndef PROCESSOR_SIMPLE_SYMBOL_SUPPLIER_H__
+#define PROCESSOR_SIMPLE_SYMBOL_SUPPLIER_H__
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "google_breakpad/processor/symbol_supplier.h"
+
+namespace google_breakpad {
+
+using std::map;
+using std::string;
+using std::vector;
+
+class CodeModule;
+
+class SimpleSymbolSupplier : public SymbolSupplier {
+ public:
+  // Creates a new SimpleSymbolSupplier, using path as the root path where
+  // symbols are stored.
+  explicit SimpleSymbolSupplier(const string &path) : paths_(1, path) {}
+
+  // Creates a new SimpleSymbolSupplier, using paths as a list of root
+  // paths where symbols may be stored.
+  explicit SimpleSymbolSupplier(const vector<string> &paths) : paths_(paths) {}
+
+  virtual ~SimpleSymbolSupplier() {}
+
+  // Returns the path to the symbol file for the given module.  See the
+  // description above.
+  virtual SymbolResult GetSymbolFile(const CodeModule *module,
+                                     const SystemInfo *system_info,
+                                     string *symbol_file);
+
+  virtual SymbolResult GetSymbolFile(const CodeModule *module,
+                                     const SystemInfo *system_info,
+                                     string *symbol_file,
+                                     string *symbol_data);
+
+  // Allocates data buffer on heap and writes symbol data into buffer.
+  // Symbol supplier ALWAYS takes ownership of the data buffer.
+  virtual SymbolResult GetCStringSymbolData(const CodeModule *module,
+                                            const SystemInfo *system_info,
+                                            string *symbol_file,
+                                            char **symbol_data);
+
+  // Free the data buffer allocated in the above GetCStringSymbolData();
+  virtual void FreeSymbolData(const CodeModule *module);
+
+ protected:
+  SymbolResult GetSymbolFileAtPathFromRoot(const CodeModule *module,
+                                           const SystemInfo *system_info,
+                                           const string &root_path,
+                                           string *symbol_file);
+
+ private:
+  map<string, char *> memory_buffers_;
+  vector<string> paths_;
+};
+
+}  // namespace google_breakpad
+
+#endif  // PROCESSOR_SIMPLE_SYMBOL_SUPPLIER_H__