57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "mojo/edk/system/watcher_set.h"
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#include "mojo/edk/system/request_context.h"
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#include "mojo/public/c/system/types.h"
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namespace mojo {
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namespace edk {
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WatcherSet::WatcherSet() {}
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WatcherSet::~WatcherSet() {}
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void WatcherSet::NotifyForStateChange(const HandleSignalsState& state) {
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for (const auto& entry : watchers_)
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entry.second->NotifyForStateChange(state);
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}
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void WatcherSet::NotifyClosed() {
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for (const auto& entry : watchers_)
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entry.second->NotifyClosed();
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}
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MojoResult WatcherSet::Add(MojoHandleSignals signals,
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const Watcher::WatchCallback& callback,
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uintptr_t context,
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const HandleSignalsState& current_state) {
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auto it = watchers_.find(context);
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if (it != watchers_.end())
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return MOJO_RESULT_ALREADY_EXISTS;
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if (!current_state.can_satisfy(signals))
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return MOJO_RESULT_FAILED_PRECONDITION;
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scoped_refptr<Watcher> watcher(new Watcher(signals, callback));
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watchers_.insert(std::make_pair(context, watcher));
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watcher->NotifyForStateChange(current_state);
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return MOJO_RESULT_OK;
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}
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MojoResult WatcherSet::Remove(uintptr_t context) {
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auto it = watchers_.find(context);
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if (it == watchers_.end())
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return MOJO_RESULT_INVALID_ARGUMENT;
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RequestContext::current()->AddWatchCancelFinalizer(it->second);
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watchers_.erase(it);
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return MOJO_RESULT_OK;
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}
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} // namespace edk
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} // namespace mojo
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