0,0 → 1,91 |
/* |
* 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. |
*/ |
|
#ifndef __IPC_H__ |
#define __IPC_H__ |
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#define IPC_CALL_LEN 2 |
|
/* Flags for calls */ |
#define IPC_CALL_ANSWERED 1 |
/* Flags for ipc_wait_for_call */ |
#define IPC_WAIT_NONBLOCKING 1 |
|
#ifdef KERNEL |
|
#include <synch/waitq.h> |
#include <synch/spinlock.h> |
#include <adt/list.h> |
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#define IPC_MAX_PHONES 16 |
|
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typedef struct answerbox answerbox_t; |
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typedef struct { |
link_t list; |
answerbox_t *callerbox; |
int flags; |
__native data[IPC_CALL_LEN]; |
} call_t; |
|
struct answerbox { |
SPINLOCK_DECLARE(lock); |
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waitq_t wq; |
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link_t connected_phones; /**< Phones connected to this answerbox */ |
link_t calls; /**< Received calls */ |
link_t dispatched_calls; /* Should be hash table in the future */ |
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link_t answers; /**< Answered calls */ |
}; |
|
typedef struct { |
SPINLOCK_DECLARE(lock); |
link_t list; |
answerbox_t *callee; |
} phone_t; |
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extern void ipc_create_phonecompany(void); |
extern void ipc_init(void); |
extern call_t * ipc_wait_for_call(answerbox_t *box, int flags); |
extern void ipc_answer(answerbox_t *box, call_t *request); |
extern void ipc_call(phone_t *phone, call_t *request); |
extern void ipc_phone_destroy(phone_t *phone); |
extern void ipc_phone_init(phone_t *phone, answerbox_t *box); |
extern void ipc_call_free(call_t *call); |
extern call_t * ipc_call_alloc(void); |
void ipc_answerbox_init(answerbox_t *box); |
void ipc_phone_init(phone_t *phone, answerbox_t *box); |
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extern answerbox_t *ipc_central_box; |
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#endif |
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#endif |