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// Copyright (c) 2009 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.
#include "base/global_descriptors_posix.h"
#include <vector>
#include <utility>
#include "base/logging.h"
namespace base {
GlobalDescriptors::GlobalDescriptors() {}
GlobalDescriptors::~GlobalDescriptors() {}
// static
GlobalDescriptors* GlobalDescriptors::GetInstance() {
typedef Singleton<base::GlobalDescriptors,
LeakySingletonTraits<base::GlobalDescriptors> >
GlobalDescriptorsSingleton;
return GlobalDescriptorsSingleton::get();
}
int GlobalDescriptors::MaybeGet(Key key) const {
for (Mapping::const_iterator
i = descriptors_.begin(); i != descriptors_.end(); ++i) {
if (i->first == key)
return i->second;
}
// In order to make unittests pass, we define a default mapping from keys to
// descriptors by adding a fixed offset:
return kBaseDescriptor + key;
}
int GlobalDescriptors::Get(Key key) const {
const int ret = MaybeGet(key);
if (ret == -1)
LOG(FATAL) << "Unknown global descriptor: " << key;
return ret;
}
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));
}
} // namespace base
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