84 lines
1.8 KiB
C
84 lines
1.8 KiB
C
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2012.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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sortix/kernel/poll.h
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Kernel declarations for event polling.
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*******************************************************************************/
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#ifndef INCLUDE_SORTIX_KERNEL_POLL_H
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#define INCLUDE_SORTIX_KERNEL_POLL_H
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#include <sortix/kernel/kthread.h>
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namespace Sortix {
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class PollChannel;
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class PollNode;
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class PollChannel
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{
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public:
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PollChannel();
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~PollChannel();
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void Signal(short events);
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void Register(PollNode* node);
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void Unregister(PollNode* node);
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private:
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void SignalUnlocked(short events);
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private:
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struct PollNode* first;
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struct PollNode* last;
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kthread_mutex_t channel_lock;
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kthread_cond_t no_pending_cond;
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};
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class PollNode
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{
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friend class PollChannel;
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public:
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PollNode() { next = NULL; prev = NULL; channel = NULL; }
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private:
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PollNode* next;
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PollNode* prev;
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public:
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PollChannel* channel;
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public:
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kthread_mutex_t* wake_mutex;
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kthread_cond_t* wake_cond;
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short events;
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short revents;
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bool* woken;
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public:
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void Cancel();
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};
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} // namespace Sortix
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#endif
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