source: mainline/uspace/lib/c/include/async.h@ c1c0184

/*
 * 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 <async_sess.h>
#include <fibril.h>
#include <sys/time.h>
#include <atomic.h>
#include <bool.h>

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

extern atomic_t async_futex;

extern atomic_t threads_in_ipc_wait;

extern int __async_init(void);
extern 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);
}

static inline void async_manager(void)
{
        fibril_switch(FIBRIL_TO_MANAGER);
}

/*
 * User-friendly wrappers for async_send_fast() and async_send_slow(). The
 * macros are in the form async_send_m(), where m denotes the number of payload
 * arguments.  Each macros chooses between the fast and the slow version based
 * on m.
 */

#define async_send_0(phoneid, method, dataptr) \
        async_send_fast((phoneid), (method), 0, 0, 0, 0, (dataptr))
#define async_send_1(phoneid, method, arg1, dataptr) \
        async_send_fast((phoneid), (method), (arg1), 0, 0, 0, (dataptr))
#define async_send_2(phoneid, method, arg1, arg2, dataptr) \
        async_send_fast((phoneid), (method), (arg1), (arg2), 0, 0, (dataptr))
#define async_send_3(phoneid, method, arg1, arg2, arg3, dataptr) \
        async_send_fast((phoneid), (method), (arg1), (arg2), (arg3), 0, (dataptr))
#define async_send_4(phoneid, method, arg1, arg2, arg3, arg4, dataptr) \
        async_send_fast((phoneid), (method), (arg1), (arg2), (arg3), (arg4), \
            (dataptr))
#define async_send_5(phoneid, method, arg1, arg2, arg3, arg4, arg5, dataptr) \
        async_send_slow((phoneid), (method), (arg1), (arg2), (arg3), (arg4), \
            (arg5), (dataptr))

extern aid_t async_send_fast(int phoneid, sysarg_t method, sysarg_t arg1,
    sysarg_t arg2, sysarg_t arg3, sysarg_t arg4, ipc_call_t *dataptr);
extern aid_t async_send_slow(int phoneid, sysarg_t method, sysarg_t arg1,
    sysarg_t arg2, sysarg_t arg3, sysarg_t arg4, sysarg_t arg5,
    ipc_call_t *dataptr);
extern void async_wait_for(aid_t amsgid, sysarg_t *result);
extern int async_wait_timeout(aid_t amsgid, sysarg_t *retval,
    suseconds_t timeout);

extern fid_t async_new_connection(sysarg_t in_phone_hash, ipc_callid_t callid,
    ipc_call_t *call, void (*cthread)(ipc_callid_t, ipc_call_t *));
extern void async_usleep(suseconds_t timeout);
extern void async_create_manager(void);
extern void async_destroy_manager(void);

extern void async_set_client_connection(async_client_conn_t conn);
extern void async_set_interrupt_received(async_client_conn_t conn);

/* Wrappers for simple communication */
#define async_msg_0(phone, method) \
        ipc_call_async_0((phone), (method), NULL, NULL, true)
#define async_msg_1(phone, method, arg1) \
        ipc_call_async_1((phone), (method), (arg1), NULL, NULL, \
            true)
#define async_msg_2(phone, method, arg1, arg2) \
        ipc_call_async_2((phone), (method), (arg1), (arg2), NULL, NULL, \
            true)
#define async_msg_3(phone, method, arg1, arg2, arg3) \
        ipc_call_async_3((phone), (method), (arg1), (arg2), (arg3), NULL, NULL, \
            true)
#define async_msg_4(phone, method, arg1, arg2, arg3, arg4) \
        ipc_call_async_4((phone), (method), (arg1), (arg2), (arg3), (arg4), NULL, \
            NULL, true)
#define async_msg_5(phone, method, arg1, arg2, arg3, arg4, arg5) \
        ipc_call_async_5((phone), (method), (arg1), (arg2), (arg3), (arg4), \
            (arg5), NULL, NULL, true)

/*
 * User-friendly wrappers for async_req_fast() and async_req_slow(). The macros
 * are in the form async_req_m_n(), where m is the number of payload arguments
 * and n is the number of return arguments. The macros decide between the fast
 * and slow verion based on m.
 */
#define async_req_0_0(phoneid, method) \
        async_req_fast((phoneid), (method), 0, 0, 0, 0, NULL, NULL, NULL, NULL, \
            NULL)
#define async_req_0_1(phoneid, method, r1) \
        async_req_fast((phoneid), (method), 0, 0, 0, 0, (r1), NULL, NULL, NULL, \
            NULL)
#define async_req_0_2(phoneid, method, r1, r2) \
        async_req_fast((phoneid), (method), 0, 0, 0, 0, (r1), (r2), NULL, NULL, \
            NULL)
#define async_req_0_3(phoneid, method, r1, r2, r3) \
        async_req_fast((phoneid), (method), 0, 0, 0, 0, (r1), (r2), (r3), NULL, \
            NULL)
#define async_req_0_4(phoneid, method, r1, r2, r3, r4) \
        async_req_fast((phoneid), (method), 0, 0, 0, 0, (r1), (r2), (r3), (r4), \
            NULL)
#define async_req_0_5(phoneid, method, r1, r2, r3, r4, r5) \
        async_req_fast((phoneid), (method), 0, 0, 0, 0, (r1), (r2), (r3), (r4), \
            (r5))
#define async_req_1_0(phoneid, method, arg1) \
        async_req_fast((phoneid), (method), (arg1), 0, 0, 0, NULL, NULL, NULL, \
            NULL, NULL)
#define async_req_1_1(phoneid, method, arg1, rc1) \
        async_req_fast((phoneid), (method), (arg1), 0, 0, 0, (rc1), NULL, NULL, \
            NULL, NULL)
#define async_req_1_2(phoneid, method, arg1, rc1, rc2) \
        async_req_fast((phoneid), (method), (arg1), 0, 0, 0, (rc1), (rc2), NULL, \
            NULL, NULL)
#define async_req_1_3(phoneid, method, arg1, rc1, rc2, rc3) \
        async_req_fast((phoneid), (method), (arg1), 0, 0, 0, (rc1), (rc2), (rc3), \
            NULL, NULL)
#define async_req_1_4(phoneid, method, arg1, rc1, rc2, rc3, rc4) \
        async_req_fast((phoneid), (method), (arg1), 0, 0, 0, (rc1), (rc2), (rc3), \
            (rc4), NULL)
#define async_req_1_5(phoneid, method, arg1, rc1, rc2, rc3, rc4, rc5) \
        async_req_fast((phoneid), (method), (arg1), 0, 0, 0, (rc1), (rc2), (rc3), \
            (rc4), (rc5))
#define async_req_2_0(phoneid, method, arg1, arg2) \
        async_req_fast((phoneid), (method), (arg1), (arg2), 0, 0, NULL, NULL, \
            NULL, NULL, NULL)
#define async_req_2_1(phoneid, method, arg1, arg2, rc1) \
        async_req_fast((phoneid), (method), (arg1), (arg2), 0, 0, (rc1), NULL, \
            NULL, NULL, NULL)
#define async_req_2_2(phoneid, method, arg1, arg2, rc1, rc2) \
        async_req_fast((phoneid), (method), (arg1), (arg2), 0, 0, (rc1), (rc2), \
            NULL, NULL, NULL)
#define async_req_2_3(phoneid, method, arg1, arg2, rc1, rc2, rc3) \
        async_req_fast((phoneid), (method), (arg1), (arg2), 0, 0, (rc1), (rc2), \
            (rc3), NULL, NULL)
#define async_req_2_4(phoneid, method, arg1, arg2, rc1, rc2, rc3, rc4) \
        async_req_fast((phoneid), (method), (arg1), (arg2), 0, 0, (rc1), (rc2), \
            (rc3), (rc4), NULL)
#define async_req_2_5(phoneid, method, arg1, arg2, rc1, rc2, rc3, rc4, rc5) \
        async_req_fast((phoneid), (method), (arg1), (arg2), 0, 0, (rc1), (rc2), \
            (rc3), (rc4), (rc5))
#define async_req_3_0(phoneid, method, arg1, arg2, arg3) \
        async_req_fast((phoneid), (method), (arg1), (arg2), (arg3), 0, NULL, NULL, \
            NULL, NULL, NULL)
#define async_req_3_1(phoneid, method, arg1, arg2, arg3, rc1) \
        async_req_fast((phoneid), (method), (arg1), (arg2), (arg3), 0, (rc1), \
            NULL, NULL, NULL, NULL)
#define async_req_3_2(phoneid, method, arg1, arg2, arg3, rc1, rc2) \
        async_req_fast((phoneid), (method), (arg1), (arg2), (arg3), 0, (rc1), \
            (rc2), NULL, NULL, NULL)
#define async_req_3_3(phoneid, method, arg1, arg2, arg3, rc1, rc2, rc3) \
        async_req_fast((phoneid), (method), (arg1), (arg2), (arg3), 0, (rc1), \
            (rc2), (rc3), NULL, NULL)
#define async_req_3_4(phoneid, method, arg1, arg2, arg3, rc1, rc2, rc3, rc4) \
        async_req_fast((phoneid), (method), (arg1), (arg2), (arg3), 0, (rc1), \
            (rc2), (rc3), (rc4), NULL)
#define async_req_3_5(phoneid, method, arg1, arg2, arg3, rc1, rc2, rc3, rc4, \
    rc5) \
        async_req_fast((phoneid), (method), (arg1), (arg2), (arg3), 0, (rc1), \
            (rc2), (rc3), (rc4), (rc5))
#define async_req_4_0(phoneid, method, arg1, arg2, arg3, arg4) \
        async_req_fast((phoneid), (method), (arg1), (arg2), (arg3), (arg4), NULL, \
            NULL, NULL, NULL, NULL)
#define async_req_4_1(phoneid, method, arg1, arg2, arg3, arg4, rc1) \
        async_req_fast((phoneid), (method), (arg1), (arg2), (arg3), (arg4), (rc1), \
            NULL, NULL, NULL, NULL)
#define async_req_4_2(phoneid, method, arg1, arg2, arg3, arg4, rc1, rc2) \
        async_req_fast((phoneid), (method), (arg1), (arg2), (arg3), (arg4), (rc1), \
            (rc2), NULL, NULL, NULL)
#define async_req_4_3(phoneid, method, arg1, arg2, arg3, arg4, rc1, rc2, rc3) \
        async_req_fast((phoneid), (method), (arg1), (arg2), (arg3), (arg4), (rc1), \
            (rc2), (rc3), NULL, NULL)
#define async_req_4_4(phoneid, method, arg1, arg2, arg3, arg4, rc1, rc2, rc3, \
    rc4) \
        async_req_fast((phoneid), (method), (arg1), (arg2), (arg3), (arg4), \
            (rc1), (rc2), (rc3), (rc4), NULL)
#define async_req_4_5(phoneid, method, arg1, arg2, arg3, arg4, rc1, rc2, rc3, \
    rc4, rc5) \
        async_req_fast((phoneid), (method), (arg1), (arg2), (arg3), (arg4), \
            (rc1), (rc2), (rc3), (rc4), (rc5))
#define async_req_5_0(phoneid, method, arg1, arg2, arg3, arg4, arg5) \
        async_req_slow((phoneid), (method), (arg1), (arg2), (arg3), (arg4), \
            (arg5), NULL, NULL, NULL, NULL, NULL)
#define async_req_5_1(phoneid, method, arg1, arg2, arg3, arg4, arg5, rc1) \
        async_req_slow((phoneid), (method), (arg1), (arg2), (arg3), (arg4), \
            (arg5), (rc1), NULL, NULL, NULL, NULL)
#define async_req_5_2(phoneid, method, arg1, arg2, arg3, arg4, arg5, rc1, rc2) \
        async_req_slow((phoneid), (method), (arg1), (arg2), (arg3), (arg4), \
            (arg5), (rc1), (rc2), NULL, NULL, NULL)
#define async_req_5_3(phoneid, method, arg1, arg2, arg3, arg4, arg5, rc1, rc2, \
    rc3) \
        async_req_slow((phoneid), (method), (arg1), (arg2), (arg3), (arg4), \
            (arg5), (rc1), (rc2), (rc3), NULL, NULL)
#define async_req_5_4(phoneid, method, arg1, arg2, arg3, arg4, arg5, rc1, rc2, \
    rc3, rc4) \
        async_req_slow((phoneid), (method), (arg1), (arg2), (arg3), (arg4), \
            (arg5), (rc1), (rc2), (rc3), (rc4), NULL)
#define async_req_5_5(phoneid, method, arg1, arg2, arg3, arg4, arg5, rc1, rc2, \
    rc3, rc4, rc5) \
        async_req_slow((phoneid), (method), (arg1), (arg2), (arg3), (arg4), \
            (arg5), (rc1), (rc2), (rc3), (rc4), (rc5))

extern sysarg_t async_req_fast(int phoneid, sysarg_t method, sysarg_t arg1,
    sysarg_t arg2, sysarg_t arg3, sysarg_t arg4, sysarg_t *r1, sysarg_t *r2,
    sysarg_t *r3, sysarg_t *r4, sysarg_t *r5);
extern sysarg_t async_req_slow(int phoneid, sysarg_t method, sysarg_t arg1,
    sysarg_t arg2, sysarg_t arg3, sysarg_t arg4, sysarg_t arg5, sysarg_t *r1,
    sysarg_t *r2, sysarg_t *r3, sysarg_t *r4, sysarg_t *r5);

static inline void async_serialize_start(void)
{
        fibril_inc_sercount();
}

static inline void async_serialize_end(void)
{
        fibril_dec_sercount();
}

extern int async_connect_me_to(int, sysarg_t, sysarg_t, sysarg_t);
extern int async_connect_me_to_blocking(int, sysarg_t, sysarg_t, sysarg_t);

/*
 * User-friendly wrappers for async_share_in_start().
 */
#define async_share_in_start_0_0(phoneid, dst, size) \
        async_share_in_start((phoneid), (dst), (size), 0, NULL)
#define async_share_in_start_0_1(phoneid, dst, size, flags) \
        async_share_in_start((phoneid), (dst), (size), 0, (flags))
#define async_share_in_start_1_0(phoneid, dst, size, arg) \
        async_share_in_start((phoneid), (dst), (size), (arg), NULL)
#define async_share_in_start_1_1(phoneid, dst, size, arg, flags) \
        async_share_in_start((phoneid), (dst), (size), (arg), (flags))

extern int async_share_in_start(int, void *, size_t, sysarg_t, int *);
extern int async_share_in_receive(ipc_callid_t *, size_t *);
extern int async_share_in_finalize(ipc_callid_t, void *, int );
extern int async_share_out_start(int, void *, int);
extern int async_share_out_receive(ipc_callid_t *, size_t *, int *);
extern int async_share_out_finalize(ipc_callid_t, void *);

/*
 * User-friendly wrappers for async_data_read_forward_fast().
 */
#define async_data_read_forward_0_0(phoneid, method, answer) \
        async_data_read_forward_fast((phoneid), (method), 0, 0, 0, 0, NULL)
#define async_data_read_forward_0_1(phoneid, method, answer) \
        async_data_read_forward_fast((phoneid), (method), 0, 0, 0, 0, (answer))
#define async_data_read_forward_1_0(phoneid, method, arg1, answer) \
        async_data_read_forward_fast((phoneid), (method), (arg1), 0, 0, 0, NULL)
#define async_data_read_forward_1_1(phoneid, method, arg1, answer) \
        async_data_read_forward_fast((phoneid), (method), (arg1), 0, 0, 0, (answer))
#define async_data_read_forward_2_0(phoneid, method, arg1, arg2, answer) \
        async_data_read_forward_fast((phoneid), (method), (arg1), (arg2), 0, 0, NULL)
#define async_data_read_forward_2_1(phoneid, method, arg1, arg2, answer) \
        async_data_read_forward_fast((phoneid), (method), (arg1), (arg2), 0, 0, \
            (answer))
#define async_data_read_forward_3_0(phoneid, method, arg1, arg2, arg3, answer) \
        async_data_read_forward_fast((phoneid), (method), (arg1), (arg2), (arg3), 0, \
            NULL)
#define async_data_read_forward_3_1(phoneid, method, arg1, arg2, arg3, answer) \
        async_data_read_forward_fast((phoneid), (method), (arg1), (arg2), (arg3), 0, \
            (answer))
#define async_data_read_forward_4_0(phoneid, method, arg1, arg2, arg3, arg4, answer) \
        async_data_read_forward_fast((phoneid), (method), (arg1), (arg2), (arg3), \
            (arg4), NULL)
#define async_data_read_forward_4_1(phoneid, method, arg1, arg2, arg3, arg4, answer) \
        async_data_read_forward_fast((phoneid), (method), (arg1), (arg2), (arg3), \
            (arg4), (answer))

extern int async_data_read_start(int, void *, size_t);
extern int async_data_read_receive(ipc_callid_t *, size_t *);
extern int async_data_read_finalize(ipc_callid_t, const void *, size_t);

extern int async_data_read_forward_fast(int, sysarg_t, sysarg_t, sysarg_t,
    sysarg_t, sysarg_t, ipc_call_t *);

/*
 * User-friendly wrappers for async_data_write_forward_fast().
 */
#define async_data_write_forward_0_0(phoneid, method, answer) \
        async_data_write_forward_fast((phoneid), (method), 0, 0, 0, 0, NULL)
#define async_data_write_forward_0_1(phoneid, method, answer) \
        async_data_write_forward_fast((phoneid), (method), 0, 0, 0, 0, (answer))
#define async_data_write_forward_1_0(phoneid, method, arg1, answer) \
        async_data_write_forward_fast((phoneid), (method), (arg1), 0, 0, 0, NULL)
#define async_data_write_forward_1_1(phoneid, method, arg1, answer) \
        async_data_write_forward_fast((phoneid), (method), (arg1), 0, 0, 0, \
            (answer))
#define async_data_write_forward_2_0(phoneid, method, arg1, arg2, answer) \
        async_data_write_forward_fast((phoneid), (method), (arg1), (arg2), 0, 0, \
            NULL)
#define async_data_write_forward_2_1(phoneid, method, arg1, arg2, answer) \
        async_data_write_forward_fast((phoneid), (method), (arg1), (arg2), 0, 0, \
            (answer))
#define async_data_write_forward_3_0(phoneid, method, arg1, arg2, arg3, answer) \
        async_data_write_forward_fast((phoneid), (method), (arg1), (arg2), (arg3), \
            0, NULL)
#define async_data_write_forward_3_1(phoneid, method, arg1, arg2, arg3, answer) \
        async_data_write_forward_fast((phoneid), (method), (arg1), (arg2), (arg3), \
            0, (answer))
#define async_data_write_forward_4_0(phoneid, method, arg1, arg2, arg3, arg4, answer) \
        async_data_write_forward_fast((phoneid), (method), (arg1), (arg2), (arg3), \
            (arg4), NULL)
#define async_data_write_forward_4_1(phoneid, method, arg1, arg2, arg3, arg4, answer) \
        async_data_write_forward_fast((phoneid), (method), (arg1), (arg2), (arg3), \
            (arg4), (answer))

extern int async_data_write_start(int, const void *, size_t);
extern int async_data_write_receive(ipc_callid_t *, size_t *);
extern int async_data_write_finalize(ipc_callid_t, void *, size_t);

extern int async_data_write_accept(void **, const bool, const size_t,
    const size_t, const size_t, size_t *);
extern void async_data_write_void(const int);

extern int async_data_write_forward_fast(int, sysarg_t, sysarg_t, sysarg_t,
    sysarg_t, sysarg_t, ipc_call_t *);

#endif

/** @}
 */