source: mainline/uspace/lib/c/include/async.h@ 58cbf8d5

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 58cbf8d5 was 58cbf8d5, checked in by Martin Decky <martin@…>, 14 years ago

basic support for tracking a client replica of the remote state in stateful protocols

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1/*
2 * Copyright (c) 2006 Ondrej Palkovsky
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup libc
30 * @{
31 */
32/** @file
33 */
34
35#if ((defined(LIBC_IPC_H_)) && (!defined(LIBC_ASYNC_C_)))
36 #error Do not intermix low-level IPC interface and async framework
37#endif
38
39#ifndef LIBC_ASYNC_H_
40#define LIBC_ASYNC_H_
41
42#include <ipc/common.h>
43#include <fibril.h>
44#include <sys/time.h>
45#include <atomic.h>
46#include <bool.h>
47#include <task.h>
48
49typedef ipc_callid_t aid_t;
50
51typedef void *(*async_client_data_ctor_t)(void);
52typedef void (*async_client_data_dtor_t)(void *);
53
54/** Client connection handler
55 *
56 * @param callid ID of incoming call or 0 if connection initiated from
57 * inside using async_connect_to_me()
58 * @param call Incoming call or 0 if connection initiated from inside
59 * @param arg Local argument passed from async_new_connection() or
60 * async_connect_to_me()
61 */
62typedef void (*async_client_conn_t)(ipc_callid_t, ipc_call_t *, void *);
63
64/** Interrupt handler */
65typedef void (*async_interrupt_handler_t)(ipc_callid_t, ipc_call_t *);
66
67/** Exchange management style
68 *
69 */
70typedef enum {
71 /** No explicit exchange management
72 *
73 * Suitable for protocols which use a single
74 * IPC message per exchange only.
75 *
76 */
77 EXCHANGE_ATOMIC = 0,
78
79 /** Exchange management via phone cloning
80 *
81 * Suitable for servers which support client
82 * data tracking by task hashes and do not
83 * mind cloned phones.
84 *
85 */
86 EXCHANGE_PARALLEL,
87
88 /** Exchange management via mutual exclusion
89 *
90 * Suitable for any kind of client/server communication,
91 * but can limit parallelism.
92 *
93 */
94 EXCHANGE_SERIALIZE
95} exch_mgmt_t;
96
97/** Forward declarations */
98struct _async_exch;
99struct _async_sess;
100
101typedef struct _async_sess async_sess_t;
102typedef struct _async_exch async_exch_t;
103
104extern atomic_t threads_in_ipc_wait;
105
106#define async_manager() \
107 fibril_switch(FIBRIL_TO_MANAGER)
108
109#define async_get_call(data) \
110 async_get_call_timeout(data, 0)
111
112extern ipc_callid_t async_get_call_timeout(ipc_call_t *, suseconds_t);
113
114/*
115 * User-friendly wrappers for async_send_fast() and async_send_slow(). The
116 * macros are in the form async_send_m(), where m denotes the number of payload
117 * arguments. Each macros chooses between the fast and the slow version based
118 * on m.
119 */
120
121#define async_send_0(exch, method, dataptr) \
122 async_send_fast(exch, method, 0, 0, 0, 0, dataptr)
123#define async_send_1(exch, method, arg1, dataptr) \
124 async_send_fast(exch, method, arg1, 0, 0, 0, dataptr)
125#define async_send_2(exch, method, arg1, arg2, dataptr) \
126 async_send_fast(exch, method, arg1, arg2, 0, 0, dataptr)
127#define async_send_3(exch, method, arg1, arg2, arg3, dataptr) \
128 async_send_fast(exch, method, arg1, arg2, arg3, 0, dataptr)
129#define async_send_4(exch, method, arg1, arg2, arg3, arg4, dataptr) \
130 async_send_fast(exch, method, arg1, arg2, arg3, arg4, dataptr)
131#define async_send_5(exch, method, arg1, arg2, arg3, arg4, arg5, dataptr) \
132 async_send_slow(exch, method, arg1, arg2, arg3, arg4, arg5, dataptr)
133
134extern aid_t async_send_fast(async_exch_t *, sysarg_t, sysarg_t, sysarg_t,
135 sysarg_t, sysarg_t, ipc_call_t *);
136extern aid_t async_send_slow(async_exch_t *, sysarg_t, sysarg_t, sysarg_t,
137 sysarg_t, sysarg_t, sysarg_t, ipc_call_t *);
138
139extern void async_wait_for(aid_t, sysarg_t *);
140extern int async_wait_timeout(aid_t, sysarg_t *, suseconds_t);
141
142extern fid_t async_new_connection(task_id_t, sysarg_t, ipc_callid_t,
143 ipc_call_t *, async_client_conn_t, void *);
144
145extern void async_usleep(suseconds_t);
146extern void async_create_manager(void);
147extern void async_destroy_manager(void);
148
149extern void async_set_client_data_constructor(async_client_data_ctor_t);
150extern void async_set_client_data_destructor(async_client_data_dtor_t);
151extern void *async_get_client_data(void);
152extern void *async_get_client_data_by_id(task_id_t);
153extern void async_put_client_data_by_id(task_id_t);
154
155extern void async_set_client_connection(async_client_conn_t);
156extern void async_set_interrupt_received(async_interrupt_handler_t);
157
158/*
159 * Wrappers for simple communication.
160 */
161
162extern void async_msg_0(async_exch_t *, sysarg_t);
163extern void async_msg_1(async_exch_t *, sysarg_t, sysarg_t);
164extern void async_msg_2(async_exch_t *, sysarg_t, sysarg_t, sysarg_t);
165extern void async_msg_3(async_exch_t *, sysarg_t, sysarg_t, sysarg_t, sysarg_t);
166extern void async_msg_4(async_exch_t *, sysarg_t, sysarg_t, sysarg_t, sysarg_t,
167 sysarg_t);
168extern void async_msg_5(async_exch_t *, sysarg_t, sysarg_t, sysarg_t, sysarg_t,
169 sysarg_t, sysarg_t);
170
171/*
172 * Wrappers for answer routines.
173 */
174
175extern sysarg_t async_answer_0(ipc_callid_t, sysarg_t);
176extern sysarg_t async_answer_1(ipc_callid_t, sysarg_t, sysarg_t);
177extern sysarg_t async_answer_2(ipc_callid_t, sysarg_t, sysarg_t, sysarg_t);
178extern sysarg_t async_answer_3(ipc_callid_t, sysarg_t, sysarg_t, sysarg_t,
179 sysarg_t);
180extern sysarg_t async_answer_4(ipc_callid_t, sysarg_t, sysarg_t, sysarg_t,
181 sysarg_t, sysarg_t);
182extern sysarg_t async_answer_5(ipc_callid_t, sysarg_t, sysarg_t, sysarg_t,
183 sysarg_t, sysarg_t, sysarg_t);
184
185/*
186 * Wrappers for forwarding routines.
187 */
188
189extern int async_forward_fast(ipc_callid_t, async_exch_t *, sysarg_t, sysarg_t,
190 sysarg_t, unsigned int);
191extern int async_forward_slow(ipc_callid_t, async_exch_t *, sysarg_t, sysarg_t,
192 sysarg_t, sysarg_t, sysarg_t, sysarg_t, unsigned int);
193
194/*
195 * User-friendly wrappers for async_req_fast() and async_req_slow(). The macros
196 * are in the form async_req_m_n(), where m is the number of payload arguments
197 * and n is the number of return arguments. The macros decide between the fast
198 * and slow verion based on m.
199 */
200
201#define async_req_0_0(exch, method) \
202 async_req_fast(exch, method, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)
203#define async_req_0_1(exch, method, r1) \
204 async_req_fast(exch, method, 0, 0, 0, 0, r1, NULL, NULL, NULL, NULL)
205#define async_req_0_2(exch, method, r1, r2) \
206 async_req_fast(exch, method, 0, 0, 0, 0, r1, r2, NULL, NULL, NULL)
207#define async_req_0_3(exch, method, r1, r2, r3) \
208 async_req_fast(exch, method, 0, 0, 0, 0, r1, r2, r3, NULL, NULL)
209#define async_req_0_4(exch, method, r1, r2, r3, r4) \
210 async_req_fast(exch, method, 0, 0, 0, 0, r1, r2, r3, r4, NULL)
211#define async_req_0_5(exch, method, r1, r2, r3, r4, r5) \
212 async_req_fast(exch, method, 0, 0, 0, 0, r1, r2, r3, r4, r5)
213
214#define async_req_1_0(exch, method, arg1) \
215 async_req_fast(exch, method, arg1, 0, 0, 0, NULL, NULL, NULL, NULL, \
216 NULL)
217#define async_req_1_1(exch, method, arg1, rc1) \
218 async_req_fast(exch, method, arg1, 0, 0, 0, rc1, NULL, NULL, NULL, \
219 NULL)
220#define async_req_1_2(exch, method, arg1, rc1, rc2) \
221 async_req_fast(exch, method, arg1, 0, 0, 0, rc1, rc2, NULL, NULL, \
222 NULL)
223#define async_req_1_3(exch, method, arg1, rc1, rc2, rc3) \
224 async_req_fast(exch, method, arg1, 0, 0, 0, rc1, rc2, rc3, NULL, \
225 NULL)
226#define async_req_1_4(exch, method, arg1, rc1, rc2, rc3, rc4) \
227 async_req_fast(exch, method, arg1, 0, 0, 0, rc1, rc2, rc3, rc4, \
228 NULL)
229#define async_req_1_5(exch, method, arg1, rc1, rc2, rc3, rc4, rc5) \
230 async_req_fast(exch, method, arg1, 0, 0, 0, rc1, rc2, rc3, rc4, \
231 rc5)
232
233#define async_req_2_0(exch, method, arg1, arg2) \
234 async_req_fast(exch, method, arg1, arg2, 0, 0, NULL, NULL, NULL, \
235 NULL, NULL)
236#define async_req_2_1(exch, method, arg1, arg2, rc1) \
237 async_req_fast(exch, method, arg1, arg2, 0, 0, rc1, NULL, NULL, \
238 NULL, NULL)
239#define async_req_2_2(exch, method, arg1, arg2, rc1, rc2) \
240 async_req_fast(exch, method, arg1, arg2, 0, 0, rc1, rc2, NULL, NULL, \
241 NULL)
242#define async_req_2_3(exch, method, arg1, arg2, rc1, rc2, rc3) \
243 async_req_fast(exch, method, arg1, arg2, 0, 0, rc1, rc2, rc3, NULL, \
244 NULL)
245#define async_req_2_4(exch, method, arg1, arg2, rc1, rc2, rc3, rc4) \
246 async_req_fast(exch, method, arg1, arg2, 0, 0, rc1, rc2, rc3, rc4, \
247 NULL)
248#define async_req_2_5(exch, method, arg1, arg2, rc1, rc2, rc3, rc4, rc5) \
249 async_req_fast(exch, method, arg1, arg2, 0, 0, rc1, rc2, rc3, rc4, \
250 rc5)
251
252#define async_req_3_0(exch, method, arg1, arg2, arg3) \
253 async_req_fast(exch, method, arg1, arg2, arg3, 0, NULL, NULL, NULL, \
254 NULL, NULL)
255#define async_req_3_1(exch, method, arg1, arg2, arg3, rc1) \
256 async_req_fast(exch, method, arg1, arg2, arg3, 0, rc1, NULL, NULL, \
257 NULL, NULL)
258#define async_req_3_2(exch, method, arg1, arg2, arg3, rc1, rc2) \
259 async_req_fast(exch, method, arg1, arg2, arg3, 0, rc1, rc2, NULL, \
260 NULL, NULL)
261#define async_req_3_3(exch, method, arg1, arg2, arg3, rc1, rc2, rc3) \
262 async_req_fast(exch, method, arg1, arg2, arg3, 0, rc1, rc2, rc3, \
263 NULL, NULL)
264#define async_req_3_4(exch, method, arg1, arg2, arg3, rc1, rc2, rc3, rc4) \
265 async_req_fast(exch, method, arg1, arg2, arg3, 0, rc1, rc2, rc3, \
266 rc4, NULL)
267#define async_req_3_5(exch, method, arg1, arg2, arg3, rc1, rc2, rc3, rc4, \
268 rc5) \
269 async_req_fast(exch, method, arg1, arg2, arg3, 0, rc1, rc2, rc3, \
270 rc4, rc5)
271
272#define async_req_4_0(exch, method, arg1, arg2, arg3, arg4) \
273 async_req_fast(exch, method, arg1, arg2, arg3, arg4, NULL, NULL, \
274 NULL, NULL, NULL)
275#define async_req_4_1(exch, method, arg1, arg2, arg3, arg4, rc1) \
276 async_req_fast(exch, method, arg1, arg2, arg3, arg4, rc1, NULL, \
277 NULL, NULL, NULL)
278#define async_req_4_2(exch, method, arg1, arg2, arg3, arg4, rc1, rc2) \
279 async_req_fast(exch, method, arg1, arg2, arg3, arg4, rc1, rc2, NULL, \
280 NULL, NULL)
281#define async_req_4_3(exch, method, arg1, arg2, arg3, arg4, rc1, rc2, rc3) \
282 async_req_fast(exch, method, arg1, arg2, arg3, arg4, rc1, rc2, rc3, \
283 NULL, NULL)
284#define async_req_4_4(exch, method, arg1, arg2, arg3, arg4, rc1, rc2, rc3, \
285 rc4) \
286 async_req_fast(exch, method, arg1, arg2, arg3, arg4, rc1, rc2, rc3, \
287 rc4, NULL)
288#define async_req_4_5(exch, method, arg1, arg2, arg3, arg4, rc1, rc2, rc3, \
289 rc4, rc5) \
290 async_req_fast(exch, method, arg1, arg2, arg3, arg4, rc1, rc2, rc3, \
291 rc4, rc5)
292
293#define async_req_5_0(exch, method, arg1, arg2, arg3, arg4, arg5) \
294 async_req_slow(exch, method, arg1, arg2, arg3, arg4, arg5, NULL, \
295 NULL, NULL, NULL, NULL)
296#define async_req_5_1(exch, method, arg1, arg2, arg3, arg4, arg5, rc1) \
297 async_req_slow(exch, method, arg1, arg2, arg3, arg4, arg5, rc1, \
298 NULL, NULL, NULL, NULL)
299#define async_req_5_2(exch, method, arg1, arg2, arg3, arg4, arg5, rc1, rc2) \
300 async_req_slow(exch, method, arg1, arg2, arg3, arg4, arg5, rc1, rc2, \
301 NULL, NULL, NULL)
302#define async_req_5_3(exch, method, arg1, arg2, arg3, arg4, arg5, rc1, rc2, \
303 rc3) \
304 async_req_slow(exch, method, arg1, arg2, arg3, arg4, arg5, rc1, rc2, \
305 rc3, NULL, NULL)
306#define async_req_5_4(exch, method, arg1, arg2, arg3, arg4, arg5, rc1, rc2, \
307 rc3, rc4) \
308 async_req_slow(exch, method, arg1, arg2, arg3, arg4, arg5, rc1, rc2, \
309 rc3, rc4, NULL)
310#define async_req_5_5(exch, method, arg1, arg2, arg3, arg4, arg5, rc1, rc2, \
311 rc3, rc4, rc5) \
312 async_req_slow(exch, method, arg1, arg2, arg3, arg4, arg5, rc1, rc2, \
313 rc3, rc4, rc5)
314
315extern sysarg_t async_req_fast(async_exch_t *, sysarg_t, sysarg_t, sysarg_t,
316 sysarg_t, sysarg_t, sysarg_t *, sysarg_t *, sysarg_t *, sysarg_t *,
317 sysarg_t *);
318extern sysarg_t async_req_slow(async_exch_t *, sysarg_t, sysarg_t, sysarg_t,
319 sysarg_t, sysarg_t, sysarg_t, sysarg_t *, sysarg_t *, sysarg_t *,
320 sysarg_t *, sysarg_t *);
321
322extern async_sess_t *async_connect_me(exch_mgmt_t, async_exch_t *);
323extern async_sess_t *async_connect_me_to(exch_mgmt_t, async_exch_t *, sysarg_t,
324 sysarg_t, sysarg_t);
325extern async_sess_t *async_connect_me_to_blocking(exch_mgmt_t, async_exch_t *,
326 sysarg_t, sysarg_t, sysarg_t);
327extern async_sess_t *async_connect_kbox(task_id_t);
328
329extern int async_connect_to_me(async_exch_t *, sysarg_t, sysarg_t, sysarg_t,
330 async_client_conn_t, void *);
331
332extern int async_hangup(async_sess_t *);
333extern void async_poke(void);
334
335extern async_exch_t *async_exchange_begin(async_sess_t *);
336extern void async_exchange_end(async_exch_t *);
337
338/*
339 * User-friendly wrappers for async_share_in_start().
340 */
341
342#define async_share_in_start_0_0(exch, dst, size) \
343 async_share_in_start(exch, dst, size, 0, NULL)
344#define async_share_in_start_0_1(exch, dst, size, flags) \
345 async_share_in_start(exch, dst, size, 0, flags)
346#define async_share_in_start_1_0(exch, dst, size, arg) \
347 async_share_in_start(exch, dst, size, arg, NULL)
348#define async_share_in_start_1_1(exch, dst, size, arg, flags) \
349 async_share_in_start(exch, dst, size, arg, flags)
350
351extern int async_share_in_start(async_exch_t *, void *, size_t, sysarg_t,
352 unsigned int *);
353extern bool async_share_in_receive(ipc_callid_t *, size_t *);
354extern int async_share_in_finalize(ipc_callid_t, void *, unsigned int);
355
356extern int async_share_out_start(async_exch_t *, void *, unsigned int);
357extern bool async_share_out_receive(ipc_callid_t *, size_t *, unsigned int *);
358extern int async_share_out_finalize(ipc_callid_t, void *);
359
360/*
361 * User-friendly wrappers for async_data_read_forward_fast().
362 */
363
364#define async_data_read_forward_0_0(exch, method, answer) \
365 async_data_read_forward_fast(exch, method, 0, 0, 0, 0, NULL)
366#define async_data_read_forward_0_1(exch, method, answer) \
367 async_data_read_forward_fast(exch, method, 0, 0, 0, 0, answer)
368#define async_data_read_forward_1_0(exch, method, arg1, answer) \
369 async_data_read_forward_fast(exch, method, arg1, 0, 0, 0, NULL)
370#define async_data_read_forward_1_1(exch, method, arg1, answer) \
371 async_data_read_forward_fast(exch, method, arg1, 0, 0, 0, answer)
372#define async_data_read_forward_2_0(exch, method, arg1, arg2, answer) \
373 async_data_read_forward_fast(exch, method, arg1, arg2, 0, 0, NULL)
374#define async_data_read_forward_2_1(exch, method, arg1, arg2, answer) \
375 async_data_read_forward_fast(exch, method, arg1, arg2, 0, 0, answer)
376#define async_data_read_forward_3_0(exch, method, arg1, arg2, arg3, answer) \
377 async_data_read_forward_fast(exch, method, arg1, arg2, arg3, 0, NULL)
378#define async_data_read_forward_3_1(exch, method, arg1, arg2, arg3, answer) \
379 async_data_read_forward_fast(exch, method, arg1, arg2, arg3, 0, \
380 answer)
381#define async_data_read_forward_4_0(exch, method, arg1, arg2, arg3, arg4, \
382 answer) \
383 async_data_read_forward_fast(exch, method, arg1, arg2, arg3, arg4, \
384 NULL)
385#define async_data_read_forward_4_1(exch, method, arg1, arg2, arg3, arg4, \
386 answer) \
387 async_data_read_forward_fast(exch, method, arg1, arg2, arg3, arg4, \
388 answer)
389
390extern aid_t async_data_read(async_exch_t *, void *, size_t, ipc_call_t *);
391extern int async_data_read_start(async_exch_t *, void *, size_t);
392extern bool async_data_read_receive(ipc_callid_t *, size_t *);
393extern int async_data_read_finalize(ipc_callid_t, const void *, size_t);
394
395extern int async_data_read_forward_fast(async_exch_t *, sysarg_t, sysarg_t,
396 sysarg_t, sysarg_t, sysarg_t, ipc_call_t *);
397
398/*
399 * User-friendly wrappers for async_data_write_forward_fast().
400 */
401
402#define async_data_write_forward_0_0(exch, method, answer) \
403 async_data_write_forward_fast(exch, method, 0, 0, 0, 0, NULL)
404#define async_data_write_forward_0_1(exch, method, answer) \
405 async_data_write_forward_fast(exch, method, 0, 0, 0, 0, answer)
406#define async_data_write_forward_1_0(exch, method, arg1, answer) \
407 async_data_write_forward_fast(exch, method, arg1, 0, 0, 0, NULL)
408#define async_data_write_forward_1_1(exch, method, arg1, answer) \
409 async_data_write_forward_fast(exch, method, arg1, 0, 0, 0, answer)
410#define async_data_write_forward_2_0(exch, method, arg1, arg2, answer) \
411 async_data_write_forward_fast(exch, method, arg1, arg2, 0, 0, NULL)
412#define async_data_write_forward_2_1(exch, method, arg1, arg2, answer) \
413 async_data_write_forward_fast(exch, method, arg1, arg2, 0, 0, answer)
414#define async_data_write_forward_3_0(exch, method, arg1, arg2, arg3, answer) \
415 async_data_write_forward_fast(exch, method, arg1, arg2, arg3, 0, \
416 NULL)
417#define async_data_write_forward_3_1(exch, method, arg1, arg2, arg3, answer) \
418 async_data_write_forward_fast(exch, method, arg1, arg2, arg3, 0, \
419 answer)
420#define async_data_write_forward_4_0(exch, method, arg1, arg2, arg3, arg4, \
421 answer) \
422 async_data_write_forward_fast(exch, method, arg1, arg2, arg3, arg4, \
423 NULL)
424#define async_data_write_forward_4_1(exch, method, arg1, arg2, arg3, arg4, \
425 answer) \
426 async_data_write_forward_fast(exch, method, arg1, arg2, arg3, arg4, \
427 answer)
428
429extern int async_data_write_start(async_exch_t *, const void *, size_t);
430extern bool async_data_write_receive(ipc_callid_t *, size_t *);
431extern int async_data_write_finalize(ipc_callid_t, void *, size_t);
432
433extern int async_data_write_accept(void **, const bool, const size_t,
434 const size_t, const size_t, size_t *);
435extern void async_data_write_void(sysarg_t);
436
437extern int async_data_write_forward_fast(async_exch_t *, sysarg_t, sysarg_t,
438 sysarg_t, sysarg_t, sysarg_t, ipc_call_t *);
439
440extern int async_exchange_clone(async_exch_t *, async_exch_t *);
441extern async_sess_t *async_clone_receive(exch_mgmt_t);
442extern async_sess_t *async_callback_receive(exch_mgmt_t);
443extern async_sess_t *async_callback_receive_start(exch_mgmt_t, ipc_call_t *);
444
445extern int async_state_change_start(async_exch_t *, sysarg_t, sysarg_t,
446 sysarg_t, async_exch_t *);
447extern bool async_state_change_receive(ipc_callid_t *, sysarg_t *, sysarg_t *,
448 sysarg_t *);
449extern int async_state_change_finalize(ipc_callid_t, async_exch_t *);
450
451extern void *async_remote_state_acquire(async_sess_t *);
452extern void async_remote_state_update(async_sess_t *, void *);
453extern void async_remote_state_release(async_sess_t *);
454extern void async_remote_state_release_exchange(async_exch_t *);
455
456#endif
457
458/** @}
459 */
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