Subversion Repositories HelenOS

/*

 * Copyright (c) 2006 Ondrej Palkovsky

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - Redistributions in binary form must reproduce the above copyright

 *   notice, this list of conditions and the following disclaimer in the

 *   documentation and/or other materials provided with the distribution.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

/** @addtogroup libc

 * @{

 */

/** @file

 */

#ifndef LIBC_ASYNC_H_

#define LIBC_ASYNC_H_

#include <ipc/ipc.h>

#include <psthread.h>

#include <sys/time.h>

#include <atomic.h>

typedef ipc_callid_t aid_t;

typedef void (*async_client_conn_t)(ipc_callid_t callid, ipc_call_t *call);

static inline void async_manager(void)

{

    psthread_schedule_next_adv(PS_TO_MANAGER);

}

ipc_callid_t async_get_call_timeout(ipc_call_t *call, suseconds_t usecs);

static inline ipc_callid_t async_get_call(ipc_call_t *data)

{

    return async_get_call_timeout(data, 0);

}

aid_t async_send_2(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2,

           ipc_call_t *dataptr);

aid_t async_send_3(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2,

           ipcarg_t arg3, ipc_call_t *dataptr);

void async_wait_for(aid_t amsgid, ipcarg_t *result);

int async_wait_timeout(aid_t amsgid, ipcarg_t *retval, suseconds_t timeout);

/** Pseudo-synchronous message sending

 *

 * Send message through IPC, wait in the event loop, until it is received

 *

 * @return Return code of message

 */

static inline ipcarg_t async_req_2(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2, ipcarg_t *r1, ipcarg_t *r2)

{

    ipc_call_t result;

    ipcarg_t rc;

    aid_t eid = async_send_2(phoneid, method, arg1, arg2, &result);

    async_wait_for(eid, &rc);

    if (r1)

        *r1 = IPC_GET_ARG1(result);

    if (r2)

        *r2 = IPC_GET_ARG2(result);

    return rc;

}

#define async_req(phoneid, method, arg1, r1) async_req_2(phoneid, method, arg1, 0, r1, 0)

static inline ipcarg_t async_req_3(int phoneid, ipcarg_t method, ipcarg_t arg1,

                   ipcarg_t arg2, ipcarg_t arg3, ipcarg_t *r1,

                   ipcarg_t *r2, ipcarg_t *r3)

{

    ipc_call_t result;

    ipcarg_t rc;

    aid_t eid = async_send_3(phoneid, method, arg1, arg2, arg3, &result);

    async_wait_for(eid, &rc);

    if (r1)

        *r1 = IPC_GET_ARG1(result);

    if (r2)

        *r2 = IPC_GET_ARG2(result);

    if (r3)

        *r3 = IPC_GET_ARG3(result);

    return rc;

}

pstid_t async_new_connection(ipcarg_t in_phone_hash,ipc_callid_t callid,

                 ipc_call_t *call,

                 void (*cthread)(ipc_callid_t,ipc_call_t *));

void async_usleep(suseconds_t timeout);

void async_create_manager(void);

void async_destroy_manager(void);

void async_set_client_connection(async_client_conn_t conn);

void async_set_interrupt_received(async_client_conn_t conn);

int _async_init(void);

/* Primitve functions for IPC communication */

void async_msg_3(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2,

         ipcarg_t arg3);

void async_msg_2(int phoneid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2);

#define async_msg(ph, m, a1) async_msg_2(ph, m, a1, 0)

static inline void async_serialize_start(void)

{

    psthread_inc_sercount();

}

static inline void async_serialize_end(void)

{

    psthread_dec_sercount();

}

extern atomic_t async_futex;

#endif

/** @}

 */