src/gallium/state_trackers/clover/core/module.cpp

   1 //
   2 // Copyright 2012 Francisco Jerez
   3 //
   4 // Permission is hereby granted, free of charge, to any person obtaining a
   5 // copy of this software and associated documentation files (the "Software"),
   6 // to deal in the Software without restriction, including without limitation
   7 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 // and/or sell copies of the Software, and to permit persons to whom the
   9 // Software is furnished to do so, subject to the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be included in
  12 // all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 // OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 // OTHER DEALINGS IN THE SOFTWARE.
  21 //
  22
  23 #include <type_traits>
  24 #include <algorithm>
  25
  26 #include "core/module.hpp"
  27
  28 using namespace clover;
  29
  30 namespace {
  31    template<typename T, typename = void>
  32    struct __serializer;
  33
  34    /// Serialize the specified object.
  35    template<typename T>
  36    void
  37    __proc(compat::ostream &os, const T &x) {
  38       __serializer<T>::proc(os, x);
  39    }
  40
  41    /// Deserialize the specified object.
  42    template<typename T>
  43    void
  44    __proc(compat::istream &is, T &x) {
  45       __serializer<T>::proc(is, x);
  46    }
  47
  48    template<typename T>
  49    T
  50    __proc(compat::istream &is) {
  51       T x;
  52       __serializer<T>::proc(is, x);
  53       return x;
  54    }
  55
  56    /// (De)serialize a scalar value.
  57    template<typename T>
  58    struct __serializer<T, typename std::enable_if<
  59                              std::is_scalar<T>::value>::type> {
  60       static void
  61       proc(compat::ostream &os, const T &x) {
  62          os.write(reinterpret_cast<const char *>(&x), sizeof(x));
  63       }
  64
  65       static void
  66       proc(compat::istream &is, T &x) {
  67          is.read(reinterpret_cast<char *>(&x), sizeof(x));
  68       }
  69    };
  70
  71    /// (De)serialize a vector.
  72    template<typename T>
  73    struct __serializer<compat::vector<T>> {
  74       static void
  75       proc(compat::ostream &os, const compat::vector<T> &v) {
  76          __proc<uint32_t>(os, v.size());
  77
  78          for (size_t i = 0; i < v.size(); i++)
  79             __proc<T>(os, v[i]);
  80       }
  81
  82       static void
  83       proc(compat::istream &is, compat::vector<T> &v) {
  84          v.reserve(__proc<uint32_t>(is));
  85
  86          for (size_t i = 0; i < v.size(); i++)
  87             new(&v[i]) T(__proc<T>(is));
  88       }
  89    };
  90
  91    /// (De)serialize a module::section.
  92    template<>
  93    struct __serializer<module::section> {
  94       template<typename S, typename QT>
  95       static void
  96       proc(S &s, QT &x) {
  97          __proc(s, x.id);
  98          __proc(s, x.type);
  99          __proc(s, x.size);
 100          __proc(s, x.data);
 101       }
 102    };
 103
 104    /// (De)serialize a module::argument.
 105    template<>
 106    struct __serializer<module::argument> {
 107       template<typename S, typename QT>
 108       static void
 109       proc(S &s, QT &x) {
 110          __proc(s, x.type);
 111          __proc(s, x.size);
 112       }
 113    };
 114
 115    /// (De)serialize a module::symbol.
 116    template<>
 117    struct __serializer<module::symbol> {
 118       template<typename S, typename QT>
 119       static void
 120       proc(S &s, QT &x) {
 121          __proc(s, x.name);
 122          __proc(s, x.section);
 123          __proc(s, x.offset);
 124          __proc(s, x.args);
 125       }
 126    };
 127
 128    /// (De)serialize a module.
 129    template<>
 130    struct __serializer<module> {
 131       template<typename S, typename QT>
 132       static void
 133       proc(S &s, QT &x) {
 134          __proc(s, x.syms);
 135          __proc(s, x.secs);
 136       }
 137    };
 138 };
 139
 140 namespace clover {
 141    void
 142    module::serialize(compat::ostream &os) const {
 143       __proc(os, *this);
 144    }
 145
 146    module
 147    module::deserialize(compat::istream &is) {
 148       return __proc<module>(is);
 149    }
 150
 151    const module::symbol &
 152    module::sym(compat::string name) const {
 153       auto it = std::find_if(syms.begin(), syms.end(), [&](const symbol &x) {
 154             return compat::string(x.name) == name;
 155          });
 156
 157       if (it == syms.end())
 158          throw noent_error();
 159
 160       return *it;
 161    }
 162
 163    const module::section &
 164    module::sec(typename section::type type) const {
 165       auto it = std::find_if(secs.begin(), secs.end(), [&](const section &x) {
 166             return x.type == type;
 167          });
 168
 169       if (it == secs.end())
 170          throw noent_error();
 171
 172       return *it;
 173    }
 174 }