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209 lines
8.4 KiB
209 lines
8.4 KiB
5 years ago
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/*
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Calf Box, an open source musical instrument.
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Copyright (C) 2010-2013 Krzysztof Foltman
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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 3 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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#ifndef CBOX_RT_H
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#define CBOX_RT_H
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#include <stdint.h>
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#include "cmd.h"
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#include "dom.h"
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#include "fifo.h"
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#include "ioenv.h"
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#include "midi.h"
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#include "mididest.h"
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#define RT_CMD_QUEUE_ITEMS 1024
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#define RT_MAX_COST_PER_CALL 100
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struct cbox_instruments;
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struct cbox_scene;
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struct cbox_io;
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struct cbox_midi_pattern;
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struct cbox_song;
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struct cbox_rt_cmd_instance;
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struct cbox_rt_cmd_definition
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{
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int (*prepare)(void *user_data); // non-zero to skip the whole thing
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int (*execute)(void *user_data); // returns cost
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void (*cleanup)(void *user_data);
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};
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CBOX_EXTERN_CLASS(cbox_rt)
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struct cbox_rt
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{
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CBOX_OBJECT_HEADER()
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struct cbox_io *io;
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struct cbox_io_callbacks *cbs;
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struct cbox_fifo *rb_execute, *rb_cleanup;
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struct cbox_command_target cmd_target;
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int started, disconnected;
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struct cbox_io_env io_env;
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struct cbox_engine *engine;
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};
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extern struct cbox_rt *cbox_rt_new(struct cbox_document *doc);
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extern void cbox_rt_set_io(struct cbox_rt *rt, struct cbox_io *io);
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extern void cbox_rt_set_offline(struct cbox_rt *rt, int sample_rate, int buffer_size);
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extern void cbox_rt_start(struct cbox_rt *rt, struct cbox_command_target *fb);
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extern void cbox_rt_handle_cmd_queue(struct cbox_rt *rt);
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// This one should be called from RT thread process function to execute the queued RT commands
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extern void cbox_rt_handle_rt_commands(struct cbox_rt *rt);
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extern void cbox_rt_stop(struct cbox_rt *rt);
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// Those are for calling from the main thread. I will add a RT-thread version later.
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extern void cbox_rt_execute_cmd_sync(struct cbox_rt *rt, struct cbox_rt_cmd_definition *cmd, void *user_data);
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extern int cbox_rt_execute_cmd_async(struct cbox_rt *rt, struct cbox_rt_cmd_definition *cmd, void *user_data);
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extern void *cbox_rt_swap_pointers(struct cbox_rt *rt, void **ptr, void *new_value);
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extern void cbox_rt_swap_pointers_into(struct cbox_rt *rt, void **ptr, void *new_value, void **old_value_ptr);
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extern void *cbox_rt_swap_pointers_and_update_count(struct cbox_rt *rt, void **ptr, void *new_value, uint32_t *pcount, uint32_t new_count);
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extern void cbox_rt_array_insert(struct cbox_rt *rt, void ***ptr, uint32_t *pcount, int index, void *new_value);
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extern void *cbox_rt_array_remove(struct cbox_rt *rt, void ***ptr, uint32_t *pcount, int index);
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extern gboolean cbox_rt_array_remove_by_value(struct cbox_rt *rt, void ***ptr, uint32_t *pcount, void *value_to_remove);
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extern struct cbox_midi_merger *cbox_rt_get_midi_output(struct cbox_rt *rt, struct cbox_uuid *uuid);
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///////////////////////////////////////////////////////////////////////////////
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#define GET_RT_FROM_cbox_rt(ptr) (ptr)
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#define RT_FUNC_ARG_MEMBER(type, name) type name;
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#define RT_FUNC_ARG_LIST(type, name) , type name
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#define RT_FUNC_ARG_PASS(type, name) _args.name = name;
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#define RT_FUNC_ARG_PASS2(type, name) , _args.name
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#define RT_FUNC_ARG_PASS3(type, name) , _args->name
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#define RT_FUNC_ARG_PASS4(type, name) , name
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#define RT_FUNC_ARG_PASS5(type, name) _args->name = name;
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#define DEFINE_RT_FUNC(restype, objtype, argname, name) \
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struct rt_function_args_##name { \
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struct objtype *_obj; \
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restype _result; \
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name##_args(RT_FUNC_ARG_MEMBER) \
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}; \
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static restype RT_IMPL_##name(struct objtype *_obj, int *_cost name##_args(RT_FUNC_ARG_LIST)); \
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int exec_##name(void *user_data) { \
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int cost = 1; \
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struct rt_function_args_##name *_args = user_data;\
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_args->_result = RT_IMPL_##name(_args->_obj, &cost name##_args(RT_FUNC_ARG_PASS3)); \
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return cost; \
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} \
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restype name(struct objtype *_obj name##_args(RT_FUNC_ARG_LIST)) \
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{ \
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struct cbox_rt *rt = GET_RT_FROM_##objtype(_obj); \
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if (rt) { \
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struct rt_function_args_##name _args; \
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static struct cbox_rt_cmd_definition _cmd = { .prepare = NULL, .execute = exec_##name, .cleanup = NULL }; \
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_args._obj = _obj; \
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name##_args(RT_FUNC_ARG_PASS) \
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cbox_rt_execute_cmd_sync(rt, &_cmd, &_args); \
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return _args._result; \
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} else { \
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int cost; \
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restype _result; \
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do { \
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cost = 1; \
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_result = RT_IMPL_##name(_obj, &cost name##_args(RT_FUNC_ARG_PASS4)); \
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} while(!cost); \
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return _result; \
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} \
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} \
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restype RT_IMPL_##name(struct objtype *argname, int *_cost name##_args(RT_FUNC_ARG_LIST))
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#define DEFINE_RT_VOID_FUNC(objtype, argname, name) \
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struct rt_function_args_##name { \
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struct objtype *_obj; \
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name##_args(RT_FUNC_ARG_MEMBER) \
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}; \
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static void RT_IMPL_##name(struct objtype *_obj, int *_cost name##_args(RT_FUNC_ARG_LIST)); \
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int exec_##name(void *user_data) { \
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int cost = 1; \
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struct rt_function_args_##name *_args = user_data;\
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RT_IMPL_##name(_args->_obj, &cost name##_args(RT_FUNC_ARG_PASS3)); \
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return cost; \
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} \
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void name(struct objtype *_obj name##_args(RT_FUNC_ARG_LIST)) \
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{ \
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struct cbox_rt *rt = GET_RT_FROM_##objtype(_obj); \
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if (rt) { \
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struct rt_function_args_##name _args = { ._obj = _obj }; \
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static struct cbox_rt_cmd_definition _cmd = { .prepare = NULL, .execute = exec_##name, .cleanup = NULL }; \
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name##_args(RT_FUNC_ARG_PASS) \
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cbox_rt_execute_cmd_sync(rt, &_cmd, &_args); \
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} else { \
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int cost; \
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do { \
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cost = 1; \
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RT_IMPL_##name(_obj, &cost name##_args(RT_FUNC_ARG_PASS4)); \
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} while(!cost); \
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} \
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} \
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void RT_IMPL_##name(struct objtype *argname, int *_cost name##_args(RT_FUNC_ARG_LIST))
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#define DEFINE_ASYNC_RT_FUNC(objtype, argname, name) \
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struct rt_function_args_##name { \
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struct objtype *_obj; \
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name##_args(RT_FUNC_ARG_MEMBER) \
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}; \
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static void RT_IMPL_##name(struct objtype *_obj, int *_cost name##_args(RT_FUNC_ARG_LIST)); \
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static int prepare_##name(void *user_data); \
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static void cleanup_##name(void *user_data); \
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static int exec_##name(void *user_data) { \
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int cost = 1; \
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struct rt_function_args_##name *_args = user_data;\
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RT_IMPL_##name(_args->_obj, &cost name##_args(RT_FUNC_ARG_PASS3)); \
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return cost; \
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} \
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void name(struct objtype *_obj name##_args(RT_FUNC_ARG_LIST)) \
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{ \
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struct cbox_rt *rt = GET_RT_FROM_##objtype(_obj); \
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struct rt_function_args_##name *_args = malloc(sizeof(struct rt_function_args_##name)); \
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_args->_obj = _obj; \
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name##_args(RT_FUNC_ARG_PASS5) \
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static struct cbox_rt_cmd_definition _cmd = { .prepare = prepare_##name, .execute = exec_##name, .cleanup = cleanup_##name }; \
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if (cbox_rt_execute_cmd_async(rt, &_cmd, _args)) \
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free(_args); \
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} \
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void RT_IMPL_##name(struct objtype *argname, int *_cost name##_args(RT_FUNC_ARG_LIST))
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#define ASYNC_PREPARE_FUNC(objtype, argname, name) \
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static int PREPARE_IMPL_##name(struct objtype *argname, struct rt_function_args_##name *args); \
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int prepare_##name(void *user_data) {\
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struct rt_function_args_##name *_args = user_data;\
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return PREPARE_IMPL_##name(_args->_obj, _args); \
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} \
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int PREPARE_IMPL_##name(struct objtype *argname, struct rt_function_args_##name *args)
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#define ASYNC_CLEANUP_FUNC(objtype, argname, name) \
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static void CLEANUP_IMPL_##name(struct objtype *argname, struct rt_function_args_##name *args); \
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void cleanup_##name(void *user_data) {\
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struct rt_function_args_##name *_args = user_data;\
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CLEANUP_IMPL_##name(_args->_obj, _args); \
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free(_args); \
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} \
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void CLEANUP_IMPL_##name(struct objtype *argname, struct rt_function_args_##name *args)
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#define RT_CALL_AGAIN_LATER() ((*_cost) = 0)
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#define RT_SET_COST(n) ((*_cost) = (n))
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#endif
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