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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
/*
Copyright (c) 2008-2009 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
GlusterFS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
GlusterFS is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#include "saved-frames.h"
#include "common-utils.h"
#include "protocol.h"
#include "xlator.h"
struct saved_frames *
saved_frames_new (void)
{
struct saved_frames *saved_frames = NULL;
saved_frames = CALLOC (sizeof (*saved_frames), 1);
if (!saved_frames) {
return NULL;
}
INIT_LIST_HEAD (&saved_frames->fops.list);
INIT_LIST_HEAD (&saved_frames->mops.list);
INIT_LIST_HEAD (&saved_frames->cbks.list);
return saved_frames;
}
struct saved_frame *
get_head_frame_for_type (struct saved_frames *frames, int8_t type)
{
struct saved_frame *head_frame = NULL;
switch (type) {
case GF_OP_TYPE_FOP_REQUEST:
case GF_OP_TYPE_FOP_REPLY:
head_frame = &frames->fops;
break;
case GF_OP_TYPE_MOP_REQUEST:
case GF_OP_TYPE_MOP_REPLY:
head_frame = &frames->mops;
break;
case GF_OP_TYPE_CBK_REQUEST:
case GF_OP_TYPE_CBK_REPLY:
head_frame = &frames->cbks;
break;
}
return head_frame;
}
int
saved_frames_put (struct saved_frames *frames, call_frame_t *frame,
int32_t op, int8_t type, int64_t callid)
{
struct saved_frame *saved_frame = NULL;
struct saved_frame *head_frame = NULL;
head_frame = get_head_frame_for_type (frames, type);
saved_frame = CALLOC (sizeof (*saved_frame), 1);
if (!saved_frame) {
return -ENOMEM;
}
INIT_LIST_HEAD (&saved_frame->list);
saved_frame->frame = frame;
saved_frame->op = op;
saved_frame->type = type;
saved_frame->callid = callid;
gettimeofday (&saved_frame->saved_at, NULL);
list_add_tail (&saved_frame->list, &head_frame->list);
frames->count++;
return 0;
}
call_frame_t *
saved_frames_get (struct saved_frames *frames, int32_t op,
int8_t type, int64_t callid)
{
struct saved_frame *saved_frame = NULL;
struct saved_frame *tmp = NULL;
struct saved_frame *head_frame = NULL;
call_frame_t *frame = NULL;
head_frame = get_head_frame_for_type (frames, type);
list_for_each_entry (tmp, &head_frame->list, list) {
if (tmp->callid == callid) {
list_del_init (&tmp->list);
frames->count--;
saved_frame = tmp;
break;
}
}
if (saved_frame)
frame = saved_frame->frame;
FREE (saved_frame);
return frame;
}
struct saved_frame *
saved_frames_get_timedout (struct saved_frames *frames, int8_t type,
uint32_t timeout, struct timeval *current)
{
struct saved_frame *bailout_frame = NULL, *tmp = NULL;
struct saved_frame *head_frame = NULL;
head_frame = get_head_frame_for_type (frames, type);
if (!list_empty(&head_frame->list)) {
tmp = list_entry (head_frame->list.next, typeof (*tmp), list);
if ((tmp->saved_at.tv_sec + timeout) < current->tv_sec) {
bailout_frame = tmp;
list_del_init (&bailout_frame->list);
frames->count--;
}
}
return bailout_frame;
}
void
saved_frames_unwind (xlator_t *this, struct saved_frames *saved_frames,
struct saved_frame *head,
gf_op_t gf_ops[], char *gf_op_list[])
{
struct saved_frame *trav = NULL;
struct saved_frame *tmp = NULL;
gf_hdr_common_t hdr = {0, };
call_frame_t *frame = NULL;
hdr.rsp.op_ret = hton32 (-1);
hdr.rsp.op_errno = hton32 (ENOTCONN);
list_for_each_entry_safe (trav, tmp, &head->list, list) {
gf_log (this->name, GF_LOG_ERROR,
"forced unwinding frame type(%d) op(%s)",
trav->type, gf_op_list[trav->op]);
hdr.type = hton32 (trav->type);
hdr.op = hton32 (trav->op);
frame = trav->frame;
saved_frames->count--;
gf_ops[trav->op] (frame, &hdr, sizeof (hdr), NULL);
list_del_init (&trav->list);
FREE (trav);
}
}
void
saved_frames_destroy (xlator_t *this, struct saved_frames *frames,
gf_op_t gf_fops[], gf_op_t gf_mops[], gf_op_t gf_cbks[])
{
saved_frames_unwind (this, frames, &frames->fops, gf_fops, gf_fop_list);
saved_frames_unwind (this, frames, &frames->mops, gf_mops, gf_mop_list);
saved_frames_unwind (this, frames, &frames->cbks, gf_cbks, gf_cbk_list);
FREE (frames);
}
|
