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.
 */ 

ipc_wait_t call_func(args)
{
}

ipc_wait_t fire_function(args)
{
    stack = malloc(stacksize);
    setup(stack);
    add_to_list_of_ready_funcs(stack);
    if (threads_waiting_for_message)
        send_message_to_self_to_one_up();
}

void discard_result(ipc_wait_t funcid)
{
}

int wait_result(ipc_wait_t funcid);
{
    save_context(self);
restart:
    if result_available() {
        if in_list_of_ready(self):
            tear_off_list(self);
        return retval;
    }
    add_to_waitlist_of(funcid);

    take_something_from_list_of_ready();
    if something {
        
        restore_context(something);
        } else { /* nothing */
        wait_for_call();
        if (answer) {
            mark_result_ready();
            put_waiting_thread_to_waitlist();

            goto restart;
        }
    }
    
}


int ipc_call_sync(args)
{
    return ipc_wait(call_func(args));
}