99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
/******************************************************************************
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Copyright (C) 2017 by Hugh Bailey <jim@obsproject.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#pragma once
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#include <callback/calldata.h>
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#include <util/threading.h>
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#include <util/bmem.h>
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#include "obs-scripting-internal.h"
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extern pthread_mutex_t detach_mutex;
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extern struct script_callback *detached_callbacks;
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struct script_callback {
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struct script_callback *next;
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struct script_callback **p_prev_next;
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void (*on_remove)(void *p_cb);
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obs_script_t *script;
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calldata_t extra;
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volatile bool removed;
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};
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static inline bool script_callback_removed(struct script_callback *cb)
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{
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return os_atomic_load_bool(&cb->removed);
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}
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static inline void *add_script_callback(struct script_callback **first,
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obs_script_t *script, size_t extra_size)
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{
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struct script_callback *cb = bzalloc(sizeof(*cb) + extra_size);
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cb->script = script;
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struct script_callback *next = *first;
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cb->next = next;
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cb->p_prev_next = first;
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if (next)
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next->p_prev_next = &cb->next;
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*first = cb;
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return cb;
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}
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static inline void remove_script_callback(struct script_callback *cb)
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{
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os_atomic_set_bool(&cb->removed, true);
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struct script_callback *next = cb->next;
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if (next)
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next->p_prev_next = cb->p_prev_next;
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*cb->p_prev_next = cb->next;
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pthread_mutex_lock(&detach_mutex);
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next = detached_callbacks;
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cb->next = next;
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if (next)
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next->p_prev_next = &cb->next;
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cb->p_prev_next = &detached_callbacks;
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detached_callbacks = cb;
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pthread_mutex_unlock(&detach_mutex);
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if (cb->on_remove)
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cb->on_remove(cb);
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}
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static inline void just_free_script_callback(struct script_callback *cb)
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{
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calldata_free(&cb->extra);
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bfree(cb);
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}
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static inline void free_script_callback(struct script_callback *cb)
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{
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pthread_mutex_lock(&detach_mutex);
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struct script_callback *next = cb->next;
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if (next)
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next->p_prev_next = cb->p_prev_next;
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*cb->p_prev_next = cb->next;
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pthread_mutex_unlock(&detach_mutex);
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just_free_script_callback(cb);
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}
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