Rev 1392 | Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1351 | palkovsky | 1 | /* |
| 2 | * Copyright (C) 2006 Ondrej Palkovsky |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | ipc_wait_t call_func(args) |
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| 30 | { |
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| 31 | } |
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| 32 | |||
| 33 | ipc_wait_t fire_function(args) |
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| 34 | { |
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| 35 | stack = malloc(stacksize); |
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| 36 | setup(stack); |
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| 37 | add_to_list_of_ready_funcs(stack); |
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| 38 | if (threads_waiting_for_message) |
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| 39 | send_message_to_self_to_one_up(); |
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| 40 | } |
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| 41 | |||
| 42 | void discard_result(ipc_wait_t funcid) |
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| 43 | { |
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| 44 | } |
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| 45 | |||
| 46 | int wait_result(ipc_wait_t funcid); |
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| 47 | { |
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| 48 | save_context(self); |
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| 49 | restart: |
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| 50 | if result_available() { |
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| 51 | if in_list_of_ready(self): |
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| 52 | tear_off_list(self); |
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| 53 | return retval; |
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| 54 | } |
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| 55 | add_to_waitlist_of(funcid); |
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| 56 | |||
| 57 | take_something_from_list_of_ready(); |
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| 58 | if something { |
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| 59 | |||
| 60 | restore_context(something); |
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| 61 | } else { /* nothing */ |
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| 62 | wait_for_call(); |
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| 63 | if (answer) { |
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| 64 | mark_result_ready(); |
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| 65 | put_waiting_thread_to_waitlist(); |
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| 66 | |||
| 67 | goto restart; |
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| 68 | } |
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| 69 | } |
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| 70 | |||
| 71 | } |
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| 72 | |||
| 73 | |||
| 74 | int ipc_call_sync(args) |
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| 75 | { |
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| 76 | return ipc_wait(call_func(args)); |
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| 77 | } |