| 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__ |
| |
| #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> |
| |
| #define IPC_MAX_PHONES 16 |
| |
| |
| typedef struct answerbox answerbox_t; |
| |
| typedef struct { |
| link_t list; |
| answerbox_t *callerbox; |
| int flags; |
| __native data[IPC_CALL_LEN]; |
| } call_t; |
| |
| struct answerbox { |
| SPINLOCK_DECLARE(lock); |
| |
| waitq_t wq; |
| |
| 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 */ |
| |
| link_t answers; /**< Answered calls */ |
| }; |
| |
| typedef struct { |
| SPINLOCK_DECLARE(lock); |
| link_t list; |
| answerbox_t *callee; |
| } phone_t; |
| |
| 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); |
| |
| extern answerbox_t *ipc_central_box; |
| |
| #endif |
| |
| #endif |