base/posix/global_descriptors.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/posix/global_descriptors.h"
   6
   7 #include <vector>
   8 #include <utility>
   9
  10 #include "base/logging.h"
  11
  12 namespace base {
  13
  14 // static
  15 GlobalDescriptors* GlobalDescriptors::GetInstance() {
  16   typedef Singleton<base::GlobalDescriptors,
  17                     LeakySingletonTraits<base::GlobalDescriptors> >
  18       GlobalDescriptorsSingleton;
  19   return GlobalDescriptorsSingleton::get();
  20 }
  21
  22 int GlobalDescriptors::Get(Key key) const {
  23   const int ret = MaybeGet(key);
  24
  25   if (ret == -1)
  26     DLOG(FATAL) << "Unknown global descriptor: " << key;
  27   return ret;
  28 }
  29
  30 int GlobalDescriptors::MaybeGet(Key key) const {
  31   for (Mapping::const_iterator
  32        i = descriptors_.begin(); i != descriptors_.end(); ++i) {
  33     if (i->first == key)
  34       return i->second;
  35   }
  36
  37   return -1;
  38 }
  39
  40 void GlobalDescriptors::Set(Key key, int fd) {
  41   for (Mapping::iterator
  42        i = descriptors_.begin(); i != descriptors_.end(); ++i) {
  43     if (i->first == key) {
  44       i->second = fd;
  45       return;
  46     }
  47   }
  48
  49   descriptors_.push_back(std::make_pair(key, fd));
  50 }
  51
  52 void GlobalDescriptors::Reset(const Mapping& mapping) {
  53   descriptors_ = mapping;
  54 }
  55
  56 GlobalDescriptors::GlobalDescriptors() {}
  57
  58 GlobalDescriptors::~GlobalDescriptors() {}
  59
  60 }  // namespace base