global_descriptors.cc 1.37 KB
Newer Older
gejun's avatar
gejun committed
1 2 3 4
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

5
#include "butil/posix/global_descriptors.h"
gejun's avatar
gejun committed
6 7 8 9

#include <vector>
#include <utility>

10
#include "butil/logging.h"
gejun's avatar
gejun committed
11

12
namespace butil {
gejun's avatar
gejun committed
13 14 15

// static
GlobalDescriptors* GlobalDescriptors::GetInstance() {
16 17
  typedef Singleton<butil::GlobalDescriptors,
                    LeakySingletonTraits<butil::GlobalDescriptors> >
gejun's avatar
gejun committed
18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59
      GlobalDescriptorsSingleton;
  return GlobalDescriptorsSingleton::get();
}

int GlobalDescriptors::Get(Key key) const {
  const int ret = MaybeGet(key);

  if (ret == -1)
    DLOG(FATAL) << "Unknown global descriptor: " << key;
  return ret;
}

int GlobalDescriptors::MaybeGet(Key key) const {
  for (Mapping::const_iterator
       i = descriptors_.begin(); i != descriptors_.end(); ++i) {
    if (i->first == key)
      return i->second;
  }

  return -1;
}

void GlobalDescriptors::Set(Key key, int fd) {
  for (Mapping::iterator
       i = descriptors_.begin(); i != descriptors_.end(); ++i) {
    if (i->first == key) {
      i->second = fd;
      return;
    }
  }

  descriptors_.push_back(std::make_pair(key, fd));
}

void GlobalDescriptors::Reset(const Mapping& mapping) {
  descriptors_ = mapping;
}

GlobalDescriptors::GlobalDescriptors() {}

GlobalDescriptors::~GlobalDescriptors() {}

60
}  // namespace butil