//
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// Copyright 2020 Staysail Systems, Inc. <info@staysail.tech>
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//
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// This software is supplied under the terms of the MIT License, a
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// copy of which should be located in the distribution where this
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// file was obtained (LICENSE.txt). A copy of the license may also be
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// found online at https://opensource.org/licenses/MIT.
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//
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#ifndef CORE_POLLABLE_H
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#define CORE_POLLABLE_H
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#include "core/defs.h"
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#include "core/list.h"
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typedef struct nni_pollable nni_pollable;
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extern int nni_pollable_alloc(nni_pollable **);
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extern void nni_pollable_free(nni_pollable *);
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extern void nni_pollable_raise(nni_pollable *);
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extern void nni_pollable_clear(nni_pollable *);
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extern int nni_pollable_getfd(nni_pollable *, int *);
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// nni_pollable implementation details are private. Only here for inlining.
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// We have joined to the write and read file descriptors into a a single
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// atomic 64 so we can update them together (and we can use cas to be sure
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// that such updates are always safe.)
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struct nni_pollable {
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nni_atomic_u64 p_fds;
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nni_atomic_bool p_raised;
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};
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extern void nni_pollable_init(nni_pollable *);
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extern void nni_pollable_fini(nni_pollable *);
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#endif // CORE_POLLABLE_H
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