| 1 | /*
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| 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 |
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| 29 | /** @addtogroup libc
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #ifndef LIBC_PRIVATE_ASYNC_H_
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| 36 | #define LIBC_PRIVATE_ASYNC_H_
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| 37 |
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| 38 | #include <ipc/common.h>
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| 39 | #include <adt/list.h>
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| 40 | #include <fibril.h>
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| 41 | #include <sys/time.h>
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| 42 | #include <bool.h>
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| 43 |
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| 44 | /** Structures of this type are used to track the timeout events. */
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| 45 | typedef struct {
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| 46 | /** If true, this struct is in the timeout list. */
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| 47 | bool inlist;
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| 48 |
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| 49 | /** Timeout list link. */
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| 50 | link_t link;
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| 51 |
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| 52 | /** If true, we have timed out. */
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| 53 | bool occurred;
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| 54 |
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| 55 | /** Expiration time. */
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| 56 | struct timeval expires;
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| 57 | } to_event_t;
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| 58 |
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| 59 | /** Structures of this type are used to track the wakeup events. */
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| 60 | typedef struct {
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| 61 | /** If true, this struct is in a synchronization object wait queue. */
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| 62 | bool inlist;
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| 63 |
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| 64 | /** Wait queue linkage. */
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| 65 | link_t link;
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| 66 | } wu_event_t;
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| 67 |
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| 68 | /** Structures of this type represent a waiting fibril. */
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| 69 | typedef struct {
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| 70 | /** Identification of and link to the waiting fibril. */
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| 71 | fid_t fid;
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| 72 |
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| 73 | /** If true, this fibril is currently active. */
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| 74 | bool active;
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| 75 |
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| 76 | /** Timeout wait data. */
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| 77 | to_event_t to_event;
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| 78 | /** Wakeup wait data. */
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| 79 | wu_event_t wu_event;
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| 80 | } awaiter_t;
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| 81 |
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| 82 | /** Message data */
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| 83 | typedef struct {
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| 84 | awaiter_t wdata;
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| 85 |
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| 86 | /** If reply was received. */
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| 87 | bool done;
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| 88 |
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| 89 | /** Pointer to where the answer data is stored. */
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| 90 | ipc_call_t *dataptr;
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| 91 |
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| 92 | sysarg_t retval;
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| 93 | } amsg_t;
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| 94 |
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| 95 | extern void __async_init(void);
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| 96 | extern void async_insert_timeout(awaiter_t *);
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| 97 | extern void reply_received(void *, int, ipc_call_t *);
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| 98 |
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| 99 | #endif
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| 100 |
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| 101 | /** @}
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| 102 | */
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