1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/*
* $Header$
*
* Copyright 2006 Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#include "ccs_common.h"
struct ccs_client_d {
ccs_pipe_t client_pipe;
ccs_callbackref_array_t callbacks; /* references, not owner */
};
struct ccs_client_d ccs_client_initializer = { CCS_PIPE_NULL, NULL };
/* ------------------------------------------------------------------------ */
cc_int32 ccs_client_new (ccs_client_t *out_client,
ccs_pipe_t in_client_pipe)
{
cc_int32 err = ccNoError;
ccs_client_t client = NULL;
if (!out_client ) { err = cci_check_error (ccErrBadParam); }
if (!ccs_pipe_valid (in_client_pipe)) { err = cci_check_error (ccErrBadParam); }
if (!err) {
client = malloc (sizeof (*client));
if (client) {
*client = ccs_client_initializer;
} else {
err = cci_check_error (ccErrNoMem);
}
}
if (!err) {
err = ccs_callbackref_array_new (&client->callbacks);
}
if (!err) {
err = ccs_pipe_copy (&client->client_pipe, in_client_pipe);
}
if (!err) {
*out_client = client;
client = NULL;
}
ccs_client_release (client);
return cci_check_error (err);
}
/* ------------------------------------------------------------------------ */
cc_int32 ccs_client_release (ccs_client_t io_client)
{
cc_int32 err = ccNoError;
if (!err && io_client) {
cc_uint64 i;
cc_uint64 lock_count = ccs_callbackref_array_count (io_client->callbacks);
for (i = 0; !err && i < lock_count; i++) {
ccs_callback_t callback = ccs_callbackref_array_object_at_index (io_client->callbacks, i);
cci_debug_printf ("%s: Invalidating callback reference %p.", __FUNCTION__, callback);
ccs_callback_invalidate (callback);
}
ccs_callbackref_array_release (io_client->callbacks);
ccs_pipe_release (io_client->client_pipe);
free (io_client);
}
return cci_check_error (err);
}
/* ------------------------------------------------------------------------ */
cc_int32 ccs_client_add_callback (ccs_client_t io_client,
ccs_callback_t in_callback)
{
cc_int32 err = ccNoError;
if (!io_client ) { err = cci_check_error (ccErrBadParam); }
if (!in_callback) { err = cci_check_error (ccErrBadParam); }
if (!err) {
err = ccs_callbackref_array_insert (io_client->callbacks, in_callback,
ccs_callback_array_count (io_client->callbacks));
}
return cci_check_error (err);
}
/* ------------------------------------------------------------------------ */
cc_int32 ccs_client_remove_callback (ccs_client_t io_client,
ccs_callback_t in_callback)
{
cc_int32 err = ccNoError;
cc_uint32 found_callback = 0;
if (!io_client) { err = cci_check_error (ccErrBadParam); }
if (!err) {
cc_uint64 i;
cc_uint64 lock_count = ccs_callbackref_array_count (io_client->callbacks);
for (i = 0; !err && i < lock_count; i++) {
ccs_callback_t callback = ccs_callbackref_array_object_at_index (io_client->callbacks, i);
if (callback == in_callback) {
cci_debug_printf ("%s: Removing callback reference %p.", __FUNCTION__, callback);
found_callback = 1;
err = ccs_callbackref_array_remove (io_client->callbacks, i);
break;
}
}
}
if (!err && !found_callback) {
cci_debug_printf ("%s: WARNING! callback not found.", __FUNCTION__);
}
return cci_check_error (err);
}
/* ------------------------------------------------------------------------ */
cc_int32 ccs_client_uses_pipe (ccs_client_t in_client,
ccs_pipe_t in_pipe,
cc_uint32 *out_uses_pipe)
{
cc_int32 err = ccNoError;
if (!in_client ) { err = cci_check_error (ccErrBadParam); }
if (!in_pipe ) { err = cci_check_error (ccErrBadParam); }
if (!out_uses_pipe) { err = cci_check_error (ccErrBadParam); }
if (!err) {
err = ccs_pipe_compare (in_client->client_pipe, in_pipe, out_uses_pipe);
}
return cci_check_error (err);
}
|
