96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2013, Digium, Inc.
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*
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* David M. Lee, II <dlee@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Stasis application command support.
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*
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* \author David M. Lee, II <dlee@digium.com>
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "command.h"
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#include "asterisk/lock.h"
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#include "asterisk/stasis_app_impl.h"
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struct stasis_app_command {
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ast_mutex_t lock;
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ast_cond_t condition;
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stasis_app_command_cb callback;
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void *data;
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void *retval;
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int is_done:1;
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};
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static void command_dtor(void *obj)
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{
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struct stasis_app_command *command = obj;
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ast_mutex_destroy(&command->lock);
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ast_cond_destroy(&command->condition);
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}
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struct stasis_app_command *command_create(
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stasis_app_command_cb callback, void *data)
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{
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RAII_VAR(struct stasis_app_command *, command, NULL, ao2_cleanup);
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command = ao2_alloc(sizeof(*command), command_dtor);
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if (!command) {
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return NULL;
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}
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ast_mutex_init(&command->lock);
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ast_cond_init(&command->condition, 0);
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command->callback = callback;
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command->data = data;
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ao2_ref(command, +1);
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return command;
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}
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static void command_complete(struct stasis_app_command *command, void *retval)
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{
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SCOPED_MUTEX(lock, &command->lock);
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command->is_done = 1;
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command->retval = retval;
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ast_cond_signal(&command->condition);
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}
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void *command_join(struct stasis_app_command *command)
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{
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SCOPED_MUTEX(lock, &command->lock);
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while (!command->is_done) {
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ast_cond_wait(&command->condition, &command->lock);
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}
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return command->retval;
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}
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void command_invoke(struct stasis_app_command *command,
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struct stasis_app_control *control, struct ast_channel *chan)
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{
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void *retval = command->callback(control, chan, command->data);
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command_complete(command, retval);
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}
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