1 /* Copyright (c) 2007-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #ifndef SIMGRID_MC_OBJECT_INFORMATION_HPP
8 #define SIMGRID_MC_OBJECT_INFORMATION_HPP
11 #include <unordered_map>
14 #include "mc/mc_forward.h"
15 #include "mc/Type.hpp"
16 #include "mc/Frame.hpp"
18 #include "smpi/private.h"
23 /** An entry in the functions index
25 * See the code of ObjectInformation::find_function.
27 struct FunctionIndexEntry {
29 simgrid::mc::Frame* function;
32 /** Information about an (ELF) executable/sharedobject
34 * This contain sall the information we have at runtime about an
35 * executable/shared object in the target (modelchecked) process:
36 * - where it is located in the virtual address space;
37 * - where are located it's different memory mapping in the the
38 * virtual address space ;
39 * - all the debugging (DWARF) information,
40 * - location of the functions,
44 * It is not copyable because we are taking pointers to Types/Frames.
45 * We'd have to update/rebuild some data structures in order to copy
49 class ObjectInformation {
54 ObjectInformation(ObjectInformation const&) = delete;
55 ObjectInformation& operator=(ObjectInformation const&) = delete;
58 static const int Executable = 1;
60 /** Bitfield of flags */
62 std::string file_name;
66 char *end_exec; // Executable segment
68 char *end_rw; // Read-write segment
70 char *end_ro; // read-only segment
71 std::unordered_map<std::uint64_t, simgrid::mc::Frame> subprograms;
72 // TODO, remove the mutable (to remove it we'll have to add a lot of const everywhere)
73 mutable std::vector<simgrid::mc::Variable> global_variables;
74 std::unordered_map<std::uint64_t, simgrid::mc::Type> types;
75 std::unordered_map<std::string, simgrid::mc::Type*> full_types_by_name;
77 /** Index of functions by IP
79 * The entries are sorted by low_pc and a binary search can be used to look
80 * them up. Should we used a binary tree instead?
82 std::vector<FunctionIndexEntry> functions_index;
84 bool executable() const
86 return this->flags & simgrid::mc::ObjectInformation::Executable;
89 bool privatized() const
92 return this->executable() && smpi_privatize_global_variables;
98 void* base_address() const;
100 simgrid::mc::Frame* find_function(const void *ip) const;
101 simgrid::mc::Variable* find_variable(const char* name) const;