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54 lines
1.8 KiB
54 lines
1.8 KiB
4 years ago
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/*
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* Copyright 2018 Simon Ser
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* Copyright 2021 Collabora, Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef WESTON_SIGNAL_H
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#define WESTON_SIGNAL_H
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#include <wayland-server-core.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* A safer version of wl_signal_emit() which can gracefully handle additions
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* and deletions of any signal listener from within listener notification
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* callbacks.
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*
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* Listeners deleted during a signal emission and which have not already been
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* notified at the time of deletion are not notified by that emission.
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*
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* Listeners added (or readded) during signal emission are ignored by that
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* emission.
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*
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* Note that repurposing a listener without explicitly removing it and readding
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* it is not supported and can lead to unexpected behavior.
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*/
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void
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weston_signal_emit_mutable(struct wl_signal *signal, void *data);
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#ifdef __cplusplus
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}
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#endif
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#endif /* WESTON_SIGNAL_H */
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