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1472 palkovsky 1 
/*
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 * Copyright (c) 2006 Ondrej Palkovsky
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup libc
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 * @{
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 */
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/** @file
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 */
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#ifndef LIBC_ASYNC_H_
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#define LIBC_ASYNC_H_
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#include <ipc/ipc.h>
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#include <psthread.h>
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#include <sys/time.h>
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#include <atomic.h>
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typedef ipc_callid_t aid_t;
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typedef void (*async_client_conn_t)(ipc_callid_t callid, ipc_call_t *call);
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static inline void async_manager(void)
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{
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    psthread_schedule_next_adv(PS_TO_MANAGER);
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}
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ipc_callid_t async_get_call_timeout(ipc_call_t *call, suseconds_t usecs);
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static inline ipc_callid_t async_get_call(ipc_call_t *data)
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{
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    return async_get_call_timeout(data, 0);
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}
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aid_t async_send_2(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2,
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           ipc_call_t *dataptr);
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aid_t async_send_3(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2,
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           ipcarg_t arg3, ipc_call_t *dataptr);
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void async_wait_for(aid_t amsgid, ipcarg_t *result);
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int async_wait_timeout(aid_t amsgid, ipcarg_t *retval, suseconds_t timeout);
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/** Pseudo-synchronous message sending
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 *
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 * Send message through IPC, wait in the event loop, until it is received
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 *
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 * @return Return code of message
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 */
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static inline ipcarg_t async_req_2(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2, ipcarg_t *r1, ipcarg_t *r2)
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{
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    ipc_call_t result;
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    ipcarg_t rc;
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    aid_t eid = async_send_2(phoneid, method, arg1, arg2, &result);
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    async_wait_for(eid, &rc);
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    if (r1)
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        *r1 = IPC_GET_ARG1(result);
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    if (r2)
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        *r2 = IPC_GET_ARG2(result);
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    return rc;
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}
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#define async_req(phoneid, method, arg1, r1) async_req_2(phoneid, method, arg1, 0, r1, 0)
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static inline ipcarg_t async_req_3(int phoneid, ipcarg_t method, ipcarg_t arg1,
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                   ipcarg_t arg2, ipcarg_t arg3, ipcarg_t *r1,
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                   ipcarg_t *r2, ipcarg_t *r3)
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{
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    ipc_call_t result;
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    ipcarg_t rc;
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    aid_t eid = async_send_3(phoneid, method, arg1, arg2, arg3, &result);
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    async_wait_for(eid, &rc);
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    if (r1)
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        *r1 = IPC_GET_ARG1(result);
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    if (r2)
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        *r2 = IPC_GET_ARG2(result);
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    if (r3)
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        *r3 = IPC_GET_ARG3(result);
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    return rc;
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}
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pstid_t async_new_connection(ipcarg_t in_phone_hash,ipc_callid_t callid,
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                 ipc_call_t *call,
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                 void (*cthread)(ipc_callid_t,ipc_call_t *));
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void async_usleep(suseconds_t timeout);
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void async_create_manager(void);
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void async_destroy_manager(void);
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void async_set_client_connection(async_client_conn_t conn);
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void async_set_interrupt_received(async_client_conn_t conn);
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int _async_init(void);
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/* Primitve functions for IPC communication */
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void async_msg_3(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2,
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         ipcarg_t arg3);
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void async_msg_2(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2);
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#define async_msg(ph,m,a1) async_msg_2(ph,m,a1,0)
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static inline void async_serialize_start(void)
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{
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    psthread_inc_sercount();
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}
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static inline void async_serialize_end(void)
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{
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    psthread_dec_sercount();
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}
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extern atomic_t async_futex;
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#endif
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/** @}
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 */