WebSVN – HelenOS-historic – Diff – /uspace/trunk/libipc/generic/ipc.c


/*
 * 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.
 */
 
#include <ipc.h>
#include <libc.h>
#include <malloc.h>
#include <errno.h>
#include <list.h>
#include <stdio.h>
#include <unistd.h>
 
/** Structure used for keeping track of sent async msgs
 * and queing unsent msgs
 *
 */
typedef struct {
    link_t list;
 
    ipc_async_callback_t callback;
    void *private;
    union {
        ipc_callid_t callid;
        struct {
            int phoneid;
            ipc_data_t data;
        } msg;
    }u;
} async_call_t;
 
LIST_INITIALIZE(dispatched_calls);
LIST_INITIALIZE(queued_calls);
 
int ipc_call_sync(int phoneid, ipcarg_t method, ipcarg_t arg1,
          ipcarg_t *result)
{
    ipc_data_t resdata;
    int callres;
   
    callres = __SYSCALL4(SYS_IPC_CALL_SYNC_FAST, phoneid, method, arg1,
                 (sysarg_t)&resdata);
    if (callres)
        return callres;
    if (result)
        *result = IPC_GET_ARG1(resdata);
    return IPC_GET_RETVAL(resdata);
}
 
int ipc_call_sync_3(int phoneid, ipcarg_t method, ipcarg_t arg1,
            ipcarg_t arg2, ipcarg_t arg3,
            ipcarg_t *result1, ipcarg_t *result2, ipcarg_t *result3)
{
    ipc_data_t data;
    int callres;
 
    IPC_SET_METHOD(data, method);
    IPC_SET_ARG1(data, arg1);
    IPC_SET_ARG2(data, arg2);
    IPC_SET_ARG3(data, arg3);
 
    callres = __SYSCALL3(SYS_IPC_CALL_SYNC, phoneid, (sysarg_t)&data,
                 (sysarg_t)&data);
    if (callres)
        return callres;
 
    if (result1)
        *result1 = IPC_GET_ARG1(data);
    if (result2)
        *result2 = IPC_GET_ARG2(data);
    if (result3)
        *result3 = IPC_GET_ARG3(data);
    return IPC_GET_RETVAL(data);
}
 
/** Syscall to send asynchronous message */
static  ipc_callid_t _ipc_call_async(int phoneid, ipc_data_t *data)
{
    return __SYSCALL2(SYS_IPC_CALL_ASYNC, phoneid, (sysarg_t)data);
}
 
/** Send asynchronous message
 *
 * - if fatal error, call callback handler with proper error code
 * - if message cannot be temporarily sent, add to queue
 */
void ipc_call_async_2(int phoneid, ipcarg_t method, ipcarg_t arg1,
              ipcarg_t arg2, void *private,
              ipc_async_callback_t callback)
{
    async_call_t *call;
    ipc_callid_t callid;
 
    call = malloc(sizeof(*call));
    if (!call) {
        callback(private, ENOMEM, NULL);
    }
       
    callid = __SYSCALL4(SYS_IPC_CALL_ASYNC_FAST, phoneid, method, arg1, arg2);
    if (callid == IPC_CALLRET_FATAL) {
        /* Call asynchronous handler with error code */
 
        callback(private, ENOENT, NULL);
        free(call);
        return;
    }
 
    call->callback = callback;
    call->private = private;
 
    if (callid == IPC_CALLRET_TEMPORARY) {
        /* Add asynchronous call to queue of non-dispatched async calls */
        call->u.msg.phoneid = phoneid;
        IPC_SET_METHOD(call->u.msg.data, method);
        IPC_SET_ARG1(call->u.msg.data, arg1);
        IPC_SET_ARG2(call->u.msg.data, arg2);
 
        list_append(&call->list, &queued_calls);
        return;
    }
    call->u.callid = callid;
    /* Add call to list of dispatched calls */
    list_append(&call->list, &dispatched_calls);
}
 
 
/** Send answer to a received call */
void ipc_answer(ipc_callid_t callid, ipcarg_t retval, ipcarg_t arg1,
        ipcarg_t arg2)
{
    __SYSCALL4(SYS_IPC_ANSWER_FAST, callid, retval, arg1, arg2);
}
 
 
/** Call syscall function sys_ipc_wait_for_call */
static inline ipc_callid_t _ipc_wait_for_call(ipc_call_t *call, int flags)
{
    return __SYSCALL3(SYS_IPC_WAIT, (sysarg_t)&call->data,
              (sysarg_t)&call->taskid, flags);
}
 
/** Try to dispatch queed calls from async queue */
static void try_dispatch_queued_calls(void)
{
    async_call_t *call;
    ipc_callid_t callid;
 
    while (!list_empty(&queued_calls)) {
        call = list_get_instance(queued_calls.next, async_call_t,
                     list);
 
        callid = _ipc_call_async(call->u.msg.phoneid,
                     &call->u.msg.data);
        if (callid == IPC_CALLRET_TEMPORARY)
            break;
        list_remove(&call->list);
        if (callid == IPC_CALLRET_FATAL) {
            call->callback(call->private, ENOENT, NULL);
            free(call);
        } else {
            call->u.callid = callid;
            list_append(&call->list, &dispatched_calls);
        }
    }
}
 
/** Handle received answer
 *
 * TODO: Make it use hash table
 *
 * @param callid Callid (with first bit set) of the answered call
 */
static void handle_answer(ipc_callid_t callid, ipc_data_t *data)
{
    link_t *item;
    async_call_t *call;
 
    callid &= ~IPC_CALLID_ANSWERED;
   
    for (item = dispatched_calls.next; item != &dispatched_calls;
         item = item->next) {
        call = list_get_instance(item, async_call_t, list);
        if (call->u.callid == callid) {
            list_remove(&call->list);
            call->callback(call->private,
                       IPC_GET_RETVAL(*data),
                       data);
            return;
        }
    }
    printf("Received unidentified answer: %P!!!\n", callid);
}
 
 
/** Wait for IPC call and return
 *
 * - dispatch ASYNC reoutines in the background
 * @param data Space where the message is stored
 * @return Callid or 0 if nothing available and started with
 *         IPC_WAIT_NONBLOCKING
 */
int ipc_wait_for_call(ipc_call_t *call, int flags)
{
    ipc_callid_t callid;
 
    do {
        try_dispatch_queued_calls();
 
        callid = _ipc_wait_for_call(call, flags);
        /* Handle received answers */
        if (callid & IPC_CALLID_ANSWERED)
            handle_answer(callid, &call->data);
    } while (callid & IPC_CALLID_ANSWERED);
 
    return callid;
}
 

Rev 999	Rev 1006
1	/*	1	/*
2	* Copyright (C) 2006 Ondrej Palkovsky	2	* Copyright (C) 2006 Ondrej Palkovsky
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <ipc.h>	29	#include <ipc.h>
30	#include <libc.h>	30	#include <libc.h>
31	#include <malloc.h>	31	#include <malloc.h>
32	#include <errno.h>	32	#include <errno.h>
33	#include <list.h>	33	#include <list.h>
34	#include <stdio.h>	34	#include <stdio.h>
35	#include <unistd.h>	35	#include <unistd.h>
36		36
37	/** Structure used for keeping track of sent async msgs	37	/** Structure used for keeping track of sent async msgs
38	* and queing unsent msgs	38	* and queing unsent msgs
39	*	39	*
40	*/	40	*/
41	typedef struct {	41	typedef struct {
42	link_t list;	42	link_t list;
43		43
44	ipc_async_callback_t callback;	44	ipc_async_callback_t callback;
45	void *private;	45	void *private;
46	union {	46	union {
47	ipc_callid_t callid;	47	ipc_callid_t callid;
48	struct {	48	struct {
49	int phoneid;	49	int phoneid;
50	ipc_data_t data;	50	ipc_data_t data;
51	} msg;	51	} msg;
52	}u;	52	}u;
53	} async_call_t;	53	} async_call_t;
54		54
55	LIST_INITIALIZE(dispatched_calls);	55	LIST_INITIALIZE(dispatched_calls);
56	LIST_INITIALIZE(queued_calls);	56	LIST_INITIALIZE(queued_calls);
57		57
58	int ipc_call_sync(int phoneid, ipcarg_t method, ipcarg_t arg1,	58	int ipc_call_sync(int phoneid, ipcarg_t method, ipcarg_t arg1,
59	ipcarg_t *result)	59	ipcarg_t *result)
60	{	60	{
61	ipc_data_t resdata;	61	ipc_data_t resdata;
62	int callres;	62	int callres;
63		63
64	callres = __SYSCALL4(SYS_IPC_CALL_SYNC_FAST, phoneid, method, arg1,	64	callres = __SYSCALL4(SYS_IPC_CALL_SYNC_FAST, phoneid, method, arg1,
65	(sysarg_t)&resdata);	65	(sysarg_t)&resdata);
66	if (callres)	66	if (callres)
67	return callres;	67	return callres;
68	if (result)	68	if (result)
69	*result = IPC_GET_ARG1(resdata);	69	*result = IPC_GET_ARG1(resdata);
70	return IPC_GET_RETVAL(resdata);	70	return IPC_GET_RETVAL(resdata);
71	}	71	}
72		72
73	int ipc_call_sync_3(int phoneid, ipcarg_t method, ipcarg_t arg1,	73	int ipc_call_sync_3(int phoneid, ipcarg_t method, ipcarg_t arg1,
74	ipcarg_t arg2, ipcarg_t arg3,	74	ipcarg_t arg2, ipcarg_t arg3,
75	ipcarg_t result1, ipcarg_t result2, ipcarg_t *result3)	75	ipcarg_t result1, ipcarg_t result2, ipcarg_t *result3)
76	{	76	{
77	ipc_data_t data;	77	ipc_data_t data;
78	int callres;	78	int callres;
79		79
80	IPC_SET_METHOD(data, method);	80	IPC_SET_METHOD(data, method);
81	IPC_SET_ARG1(data, arg1);	81	IPC_SET_ARG1(data, arg1);
82	IPC_SET_ARG2(data, arg2);	82	IPC_SET_ARG2(data, arg2);
83	IPC_SET_ARG3(data, arg3);	83	IPC_SET_ARG3(data, arg3);
84		84
85	callres = __SYSCALL2(SYS_IPC_CALL_SYNC, phoneid, (sysarg_t)&data);	85	callres = __SYSCALL3(SYS_IPC_CALL_SYNC, phoneid, (sysarg_t)&data,
-		86	(sysarg_t)&data);
86	if (callres)	87	if (callres)
87	return callres;	88	return callres;
88		89
89	if (result1)	90	if (result1)
90	*result1 = IPC_GET_ARG1(data);	91	*result1 = IPC_GET_ARG1(data);
91	if (result2)	92	if (result2)
92	*result2 = IPC_GET_ARG2(data);	93	*result2 = IPC_GET_ARG2(data);
93	if (result3)	94	if (result3)
94	*result3 = IPC_GET_ARG3(data);	95	*result3 = IPC_GET_ARG3(data);
95	return IPC_GET_RETVAL(data);	96	return IPC_GET_RETVAL(data);
96	}	97	}
97		98
98	/** Syscall to send asynchronous message */	99	/** Syscall to send asynchronous message */
99	static ipc_callid_t _ipc_call_async(int phoneid, ipc_data_t *data)	100	static ipc_callid_t _ipc_call_async(int phoneid, ipc_data_t *data)
100	{	101	{
101	return __SYSCALL2(SYS_IPC_CALL_ASYNC, phoneid, (sysarg_t)data);	102	return __SYSCALL2(SYS_IPC_CALL_ASYNC, phoneid, (sysarg_t)data);
102	}	103	}
103		104
104	/** Send asynchronous message	105	/** Send asynchronous message
105	*	106	*
106	* - if fatal error, call callback handler with proper error code	107	* - if fatal error, call callback handler with proper error code
107	* - if message cannot be temporarily sent, add to queue	108	* - if message cannot be temporarily sent, add to queue
108	*/	109	*/
109	void ipc_call_async_2(int phoneid, ipcarg_t method, ipcarg_t arg1,	110	void ipc_call_async_2(int phoneid, ipcarg_t method, ipcarg_t arg1,
110	ipcarg_t arg2, void *private,	111	ipcarg_t arg2, void *private,
111	ipc_async_callback_t callback)	112	ipc_async_callback_t callback)
112	{	113	{
113	async_call_t *call;	114	async_call_t *call;
114	ipc_callid_t callid;	115	ipc_callid_t callid;
115		116
116	call = malloc(sizeof(*call));	117	call = malloc(sizeof(*call));
117	if (!call) {	118	if (!call) {
118	callback(private, ENOMEM, NULL);	119	callback(private, ENOMEM, NULL);
119	}	120	}
120		121
121	callid = __SYSCALL4(SYS_IPC_CALL_ASYNC_FAST, phoneid, method, arg1, arg2);	122	callid = __SYSCALL4(SYS_IPC_CALL_ASYNC_FAST, phoneid, method, arg1, arg2);
122	if (callid == IPC_CALLRET_FATAL) {	123	if (callid == IPC_CALLRET_FATAL) {
123	/* Call asynchronous handler with error code */	124	/* Call asynchronous handler with error code */
124	IPC_SET_RETVAL(call->u.msg.data, ENOENT);	-
125	callback(private, ENOENT, NULL);	125	callback(private, ENOENT, NULL);
126	free(call);	126	free(call);
127	return;	127	return;
128	}	128	}
129		129
130	call->callback = callback;	130	call->callback = callback;
131	call->private = private;	131	call->private = private;
132		132
133	if (callid == IPC_CALLRET_TEMPORARY) {	133	if (callid == IPC_CALLRET_TEMPORARY) {
134	/* Add asynchronous call to queue of non-dispatched async calls */	134	/* Add asynchronous call to queue of non-dispatched async calls */
135	call->u.msg.phoneid = phoneid;	135	call->u.msg.phoneid = phoneid;
136	IPC_SET_METHOD(call->u.msg.data, method);	136	IPC_SET_METHOD(call->u.msg.data, method);
137	IPC_SET_ARG1(call->u.msg.data, arg1);	137	IPC_SET_ARG1(call->u.msg.data, arg1);
138	IPC_SET_ARG2(call->u.msg.data, arg2);	138	IPC_SET_ARG2(call->u.msg.data, arg2);
139		139
140	list_append(&call->list, &queued_calls);	140	list_append(&call->list, &queued_calls);
141	return;	141	return;
142	}	142	}
143	call->u.callid = callid;	143	call->u.callid = callid;
144	/* Add call to list of dispatched calls */	144	/* Add call to list of dispatched calls */
145	list_append(&call->list, &dispatched_calls);	145	list_append(&call->list, &dispatched_calls);
146	}	146	}
147		147
148		148
149	/** Send answer to a received call */	149	/** Send answer to a received call */
150	void ipc_answer(ipc_callid_t callid, ipcarg_t retval, ipcarg_t arg1,	150	void ipc_answer(ipc_callid_t callid, ipcarg_t retval, ipcarg_t arg1,
151	ipcarg_t arg2)	151	ipcarg_t arg2)
152	{	152	{
153	__SYSCALL4(SYS_IPC_ANSWER, callid, retval, arg1, arg2);	153	__SYSCALL4(SYS_IPC_ANSWER_FAST, callid, retval, arg1, arg2);
154	}	154	}
155		155
156		156
157	/** Call syscall function sys_ipc_wait_for_call */	157	/** Call syscall function sys_ipc_wait_for_call */
158	static inline ipc_callid_t _ipc_wait_for_call(ipc_data_t *data, int flags)	158	static inline ipc_callid_t _ipc_wait_for_call(ipc_call_t *call, int flags)
159	{	159	{
160	return __SYSCALL2(SYS_IPC_WAIT, (sysarg_t)data, flags);	160	return __SYSCALL3(SYS_IPC_WAIT, (sysarg_t)&call->data,
-		161	(sysarg_t)&call->taskid, flags);
161	}	162	}
162		163
163	/** Try to dispatch queed calls from async queue */	164	/** Try to dispatch queed calls from async queue */
164	static void try_dispatch_queued_calls(void)	165	static void try_dispatch_queued_calls(void)
165	{	166	{
166	async_call_t *call;	167	async_call_t *call;
167	ipc_callid_t callid;	168	ipc_callid_t callid;
168		169
169	while (!list_empty(&queued_calls)) {	170	while (!list_empty(&queued_calls)) {
170	call = list_get_instance(queued_calls.next, async_call_t,	171	call = list_get_instance(queued_calls.next, async_call_t,
171	list);	172	list);
172		173
173	callid = _ipc_call_async(call->u.msg.phoneid,	174	callid = _ipc_call_async(call->u.msg.phoneid,
174	&call->u.msg.data);	175	&call->u.msg.data);
175	if (callid == IPC_CALLRET_TEMPORARY)	176	if (callid == IPC_CALLRET_TEMPORARY)
176	break;	177	break;
177	list_remove(&call->list);	178	list_remove(&call->list);
178	if (callid == IPC_CALLRET_FATAL) {	179	if (callid == IPC_CALLRET_FATAL) {
179	call->callback(call->private, ENOENT, NULL);	180	call->callback(call->private, ENOENT, NULL);
180	free(call);	181	free(call);
181	} else {	182	} else {
182	call->u.callid = callid;	183	call->u.callid = callid;
183	list_append(&call->list, &dispatched_calls);	184	list_append(&call->list, &dispatched_calls);
184	}	185	}
185	}	186	}
186	}	187	}
187		188
188	/** Handle received answer	189	/** Handle received answer
189	*	190	*
190	* TODO: Make it use hash table	191	* TODO: Make it use hash table
191	*	192	*
192	* @param callid Callid (with first bit set) of the answered call	193	* @param callid Callid (with first bit set) of the answered call
193	*/	194	*/
194	static void handle_answer(ipc_callid_t callid, ipc_data_t *data)	195	static void handle_answer(ipc_callid_t callid, ipc_data_t *data)
195	{	196	{
196	link_t *item;	197	link_t *item;
197	async_call_t *call;	198	async_call_t *call;
198		199
199	callid &= ~IPC_CALLID_ANSWERED;	200	callid &= ~IPC_CALLID_ANSWERED;
200		201
201	for (item = dispatched_calls.next; item != &dispatched_calls;	202	for (item = dispatched_calls.next; item != &dispatched_calls;
202	item = item->next) {	203	item = item->next) {
203	call = list_get_instance(item, async_call_t, list);	204	call = list_get_instance(item, async_call_t, list);
204	if (call->u.callid == callid) {	205	if (call->u.callid == callid) {
205	list_remove(&call->list);	206	list_remove(&call->list);
206	call->callback(call->private,	207	call->callback(call->private,
207	IPC_GET_RETVAL(*data),	208	IPC_GET_RETVAL(*data),
208	data);	209	data);
209	return;	210	return;
210	}	211	}
211	}	212	}
212	printf("Received unidentified answer: %P!!!\n", callid);	213	printf("Received unidentified answer: %P!!!\n", callid);
213	}	214	}
214		215
215		216
216	/** Wait for IPC call and return	217	/** Wait for IPC call and return
217	*	218	*
218	* - dispatch ASYNC reoutines in the background	219	* - dispatch ASYNC reoutines in the background
219	* @param data Space where the message is stored	220	* @param data Space where the message is stored
220	* @return Callid or 0 if nothing available and started with	221	* @return Callid or 0 if nothing available and started with
221	* IPC_WAIT_NONBLOCKING	222	* IPC_WAIT_NONBLOCKING
222	*/	223	*/
223	int ipc_wait_for_call(ipc_data_t *data, int flags)	224	int ipc_wait_for_call(ipc_call_t *call, int flags)
224	{	225	{
225	ipc_callid_t callid;	226	ipc_callid_t callid;
226		227
227	do {	228	do {
228	try_dispatch_queued_calls();	229	try_dispatch_queued_calls();
229		230
230	callid = _ipc_wait_for_call(data, flags);	231	callid = _ipc_wait_for_call(call, flags);
231	/* Handle received answers */	232	/* Handle received answers */
232	if (callid & IPC_CALLID_ANSWERED)	233	if (callid & IPC_CALLID_ANSWERED)
233	handle_answer(callid, data);	234	handle_answer(callid, &call->data);
234	} while (callid & IPC_CALLID_ANSWERED);	235	} while (callid & IPC_CALLID_ANSWERED);
235		236
236	return callid;	237	return callid;
237	}	238	}
238		239

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(root)/uspace/trunk/libipc/generic/ipc.c – Rev 999 → 1006