1 /*
2 * nghttp2 - HTTP/2 C Library
3 *
4 * Copyright (c) 2012 Tatsuhiro Tsujikawa
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be
15 * included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25 #include "nghttp2_outbound_item.h"
26
27 #include <assert.h>
28 #include <string.h>
29
nghttp2_outbound_item_init(nghttp2_outbound_item * item)30 void nghttp2_outbound_item_init(nghttp2_outbound_item *item)
31 {
32 item->cycle = 0;
33 item->qnext = NULL;
34 item->queued = 0;
35
36 memset(&item->aux_data, 0, sizeof(nghttp2_aux_data));
37 }
38
nghttp2_outbound_item_free(nghttp2_outbound_item * item,nghttp2_mem * mem)39 void nghttp2_outbound_item_free(nghttp2_outbound_item *item, nghttp2_mem *mem)
40 {
41 nghttp2_frame *frame;
42
43 if (item == NULL) {
44 return;
45 }
46
47 frame = &item->frame;
48
49 switch (frame->hd.type) {
50 case NGHTTP2_DATA:
51 nghttp2_frame_data_free(&frame->data);
52 break;
53 case NGHTTP2_HEADERS:
54 nghttp2_frame_headers_free(&frame->headers, mem);
55 break;
56 case NGHTTP2_PRIORITY:
57 nghttp2_frame_priority_free(&frame->priority);
58 break;
59 case NGHTTP2_RST_STREAM:
60 nghttp2_frame_rst_stream_free(&frame->rst_stream);
61 break;
62 case NGHTTP2_SETTINGS:
63 nghttp2_frame_settings_free(&frame->settings, mem);
64 break;
65 case NGHTTP2_PUSH_PROMISE:
66 nghttp2_frame_push_promise_free(&frame->push_promise, mem);
67 break;
68 case NGHTTP2_PING:
69 nghttp2_frame_ping_free(&frame->ping);
70 break;
71 case NGHTTP2_GOAWAY:
72 nghttp2_frame_goaway_free(&frame->goaway, mem);
73 break;
74 case NGHTTP2_WINDOW_UPDATE:
75 nghttp2_frame_window_update_free(&frame->window_update);
76 break;
77 default:
78 {
79 nghttp2_ext_aux_data *aux_data;
80
81 aux_data = &item->aux_data.ext;
82
83 if (aux_data->builtin == 0) {
84 nghttp2_frame_extension_free(&frame->ext);
85 break;
86 }
87
88 switch (frame->hd.type) {
89 case NGHTTP2_ALTSVC:
90 nghttp2_frame_altsvc_free(&frame->ext, mem);
91 break;
92 default:
93 assert(0);
94 break;
95 }
96 }
97 }
98 }
99
nghttp2_outbound_queue_init(nghttp2_outbound_queue * q)100 void nghttp2_outbound_queue_init(nghttp2_outbound_queue *q)
101 {
102 q->head = q->tail = NULL;
103 q->n = 0;
104 }
105
nghttp2_outbound_queue_push(nghttp2_outbound_queue * q,nghttp2_outbound_item * item)106 void nghttp2_outbound_queue_push(nghttp2_outbound_queue *q,
107 nghttp2_outbound_item *item)
108 {
109 if (q->tail) {
110 q->tail = q->tail->qnext = item;
111 } else {
112 q->head = q->tail = item;
113 }
114 ++q->n;
115 }
116
nghttp2_outbound_queue_pop(nghttp2_outbound_queue * q)117 void nghttp2_outbound_queue_pop(nghttp2_outbound_queue *q)
118 {
119 nghttp2_outbound_item *item;
120 if (!q->head) {
121 return;
122 }
123 item = q->head;
124 q->head = q->head->qnext;
125 item->qnext = NULL;
126 if (!q->head) {
127 q->tail = NULL;
128 }
129 --q->n;
130 }
131