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
|
/*
*
* Copyright 2015, Google Inc.
* 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER OR CONTRIBUTORS 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 "src/core/transport/stream_op.h"
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <string.h>
/* Exponential growth function: Given x, return a larger x.
Currently we grow by 1.5 times upon reallocation. */
#define GROW(x) (3 * (x) / 2)
void grpc_sopb_init(grpc_stream_op_buffer *sopb) {
sopb->ops = sopb->inlined_ops;
sopb->nops = 0;
sopb->capacity = GRPC_SOPB_INLINE_ELEMENTS;
}
void grpc_sopb_destroy(grpc_stream_op_buffer *sopb) {
grpc_stream_ops_unref_owned_objects(sopb->ops, sopb->nops);
if (sopb->ops != sopb->inlined_ops) gpr_free(sopb->ops);
}
void grpc_sopb_reset(grpc_stream_op_buffer *sopb) {
grpc_stream_ops_unref_owned_objects(sopb->ops, sopb->nops);
sopb->nops = 0;
}
void grpc_sopb_swap(grpc_stream_op_buffer *a, grpc_stream_op_buffer *b) {
grpc_stream_op_buffer temp = *a;
*a = *b;
*b = temp;
if (a->ops == b->inlined_ops) {
a->ops = a->inlined_ops;
}
if (b->ops == a->inlined_ops) {
b->ops = b->inlined_ops;
}
}
void grpc_stream_ops_unref_owned_objects(grpc_stream_op *ops, size_t nops) {
size_t i;
for (i = 0; i < nops; i++) {
switch (ops[i].type) {
case GRPC_OP_SLICE:
gpr_slice_unref(ops[i].data.slice);
break;
case GRPC_OP_METADATA:
grpc_mdelem_unref(ops[i].data.metadata);
break;
case GRPC_OP_FLOW_CTL_CB:
ops[i].data.flow_ctl_cb.cb(ops[i].data.flow_ctl_cb.arg, GRPC_OP_ERROR);
break;
case GRPC_NO_OP:
case GRPC_OP_DEADLINE:
case GRPC_OP_METADATA_BOUNDARY:
case GRPC_OP_BEGIN_MESSAGE:
break;
}
}
}
static void expandto(grpc_stream_op_buffer *sopb, size_t new_capacity) {
sopb->capacity = new_capacity;
if (sopb->ops == sopb->inlined_ops) {
sopb->ops = gpr_malloc(sizeof(grpc_stream_op) * new_capacity);
memcpy(sopb->ops, sopb->inlined_ops, sopb->nops * sizeof(grpc_stream_op));
} else {
sopb->ops = gpr_realloc(sopb->ops, sizeof(grpc_stream_op) * new_capacity);
}
}
static grpc_stream_op *add(grpc_stream_op_buffer *sopb) {
grpc_stream_op *out;
if (sopb->nops == sopb->capacity) {
expandto(sopb, GROW(sopb->capacity));
}
out = sopb->ops + sopb->nops;
sopb->nops++;
return out;
}
void grpc_sopb_add_no_op(grpc_stream_op_buffer *sopb) {
add(sopb)->type = GRPC_NO_OP;
}
void grpc_sopb_add_begin_message(grpc_stream_op_buffer *sopb, gpr_uint32 length,
gpr_uint32 flags) {
grpc_stream_op *op = add(sopb);
op->type = GRPC_OP_BEGIN_MESSAGE;
op->data.begin_message.length = length;
op->data.begin_message.flags = flags;
}
void grpc_sopb_add_metadata_boundary(grpc_stream_op_buffer *sopb) {
grpc_stream_op *op = add(sopb);
op->type = GRPC_OP_METADATA_BOUNDARY;
}
void grpc_sopb_add_metadata(grpc_stream_op_buffer *sopb, grpc_mdelem *md) {
grpc_stream_op *op = add(sopb);
op->type = GRPC_OP_METADATA;
op->data.metadata = md;
}
void grpc_sopb_add_deadline(grpc_stream_op_buffer *sopb,
gpr_timespec deadline) {
grpc_stream_op *op = add(sopb);
op->type = GRPC_OP_DEADLINE;
op->data.deadline = deadline;
}
void grpc_sopb_add_slice(grpc_stream_op_buffer *sopb, gpr_slice slice) {
grpc_stream_op *op = add(sopb);
op->type = GRPC_OP_SLICE;
op->data.slice = slice;
}
void grpc_sopb_add_flow_ctl_cb(grpc_stream_op_buffer *sopb,
void (*cb)(void *arg, grpc_op_error error),
void *arg) {
grpc_stream_op *op = add(sopb);
op->type = GRPC_OP_FLOW_CTL_CB;
op->data.flow_ctl_cb.cb = cb;
op->data.flow_ctl_cb.arg = arg;
}
void grpc_sopb_append(grpc_stream_op_buffer *sopb, grpc_stream_op *ops,
size_t nops) {
size_t orig_nops = sopb->nops;
size_t new_nops = orig_nops + nops;
if (new_nops > sopb->capacity) {
expandto(sopb, GPR_MAX(GROW(sopb->capacity), new_nops));
}
memcpy(sopb->ops + orig_nops, ops, sizeof(grpc_stream_op) * nops);
sopb->nops = new_nops;
}
|
