XCB  1.9.1
xcbint.h
1 /*
2  * Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
3  * All Rights Reserved.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining a
6  * copy of this software and associated documentation files (the "Software"),
7  * to deal in the Software without restriction, including without limitation
8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9  * and/or sell copies of the Software, and to permit persons to whom the
10  * Software is furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be included in
13  * all copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18  * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
19  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Except as contained in this notice, the names of the authors or their
23  * institutions shall not be used in advertising or otherwise to promote the
24  * sale, use or other dealings in this Software without prior written
25  * authorization from the authors.
26  */
27 
28 #ifndef __XCBINT_H
29 #define __XCBINT_H
30 
31 #include "bigreq.h"
32 
33 #ifdef HAVE_CONFIG_H
34 #include "config.h"
35 #endif
36 
37 #ifdef GCC_HAS_VISIBILITY
38 #pragma GCC visibility push(hidden)
39 #endif
40 
41 enum workarounds {
42  WORKAROUND_NONE,
43  WORKAROUND_GLX_GET_FB_CONFIGS_BUG,
44  WORKAROUND_EXTERNAL_SOCKET_OWNER
45 };
46 
47 enum lazy_reply_tag
48 {
49  LAZY_NONE = 0,
50  LAZY_COOKIE,
51  LAZY_FORCED
52 };
53 
54 #define XCB_PAD(i) (-(i) & 3)
55 
56 #define XCB_SEQUENCE_COMPARE(a,op,b) ((int64_t) ((a) - (b)) op 0)
57 
58 #ifndef offsetof
59 #define offsetof(type,member) ((size_t) &((type *)0)->member)
60 #endif
61 
62 #ifndef MIN
63 #define MIN(x,y) ((x) < (y) ? (x) : (y))
64 #endif
65 
66 #define container_of(pointer,type,member) ((type *)(((char *)(pointer)) - offsetof(type, member)))
67 
68 /* xcb_list.c */
69 
70 typedef void (*xcb_list_free_func_t)(void *);
71 
72 typedef struct _xcb_map _xcb_map;
73 
74 _xcb_map *_xcb_map_new(void);
75 void _xcb_map_delete(_xcb_map *q, xcb_list_free_func_t do_free);
76 int _xcb_map_put(_xcb_map *q, unsigned int key, void *data);
77 void *_xcb_map_remove(_xcb_map *q, unsigned int key);
78 
79 
80 /* xcb_out.c */
81 
82 typedef struct _xcb_out {
83  pthread_cond_t cond;
84  int writing;
85 
86  pthread_cond_t socket_cond;
87  void (*return_socket)(void *closure);
88  void *socket_closure;
89  int socket_moving;
90 
91  char queue[XCB_QUEUE_BUFFER_SIZE];
92  int queue_len;
93 
94  uint64_t request;
95  uint64_t request_written;
96 
97  pthread_mutex_t reqlenlock;
98  enum lazy_reply_tag maximum_request_length_tag;
99  union {
101  uint32_t value;
102  } maximum_request_length;
103 } _xcb_out;
104 
105 int _xcb_out_init(_xcb_out *out);
106 void _xcb_out_destroy(_xcb_out *out);
107 
108 int _xcb_out_send(xcb_connection_t *c, struct iovec *vector, int count);
109 void _xcb_out_send_sync(xcb_connection_t *c);
110 int _xcb_out_flush_to(xcb_connection_t *c, uint64_t request);
111 
112 
113 /* xcb_in.c */
114 
115 typedef struct _xcb_in {
116  pthread_cond_t event_cond;
117  int reading;
118 
119  char queue[4096];
120  int queue_len;
121 
122  uint64_t request_expected;
123  uint64_t request_read;
124  uint64_t request_completed;
125  struct reply_list *current_reply;
126  struct reply_list **current_reply_tail;
127 
128  _xcb_map *replies;
129  struct event_list *events;
130  struct event_list **events_tail;
131  struct reader_list *readers;
132 
133  struct pending_reply *pending_replies;
134  struct pending_reply **pending_replies_tail;
135 } _xcb_in;
136 
137 int _xcb_in_init(_xcb_in *in);
138 void _xcb_in_destroy(_xcb_in *in);
139 
140 void _xcb_in_wake_up_next_reader(xcb_connection_t *c);
141 
142 int _xcb_in_expect_reply(xcb_connection_t *c, uint64_t request, enum workarounds workaround, int flags);
143 void _xcb_in_replies_done(xcb_connection_t *c);
144 
145 int _xcb_in_read(xcb_connection_t *c);
146 int _xcb_in_read_block(xcb_connection_t *c, void *buf, int nread);
147 
148 
149 /* xcb_xid.c */
150 
151 typedef struct _xcb_xid {
152  pthread_mutex_t lock;
153  uint32_t last;
154  uint32_t base;
155  uint32_t max;
156  uint32_t inc;
157 } _xcb_xid;
158 
159 int _xcb_xid_init(xcb_connection_t *c);
160 void _xcb_xid_destroy(xcb_connection_t *c);
161 
162 
163 /* xcb_ext.c */
164 
165 typedef struct _xcb_ext {
166  pthread_mutex_t lock;
167  struct lazyreply *extensions;
168  int extensions_size;
169 } _xcb_ext;
170 
171 int _xcb_ext_init(xcb_connection_t *c);
172 void _xcb_ext_destroy(xcb_connection_t *c);
173 
174 
175 /* xcb_conn.c */
176 
178  int has_error;
179 
180  /* constant data */
181  xcb_setup_t *setup;
182  int fd;
183 
184  /* I/O data */
185  pthread_mutex_t iolock;
186  _xcb_in in;
187  _xcb_out out;
188 
189  /* misc data */
190  _xcb_ext ext;
191  _xcb_xid xid;
192 };
193 
194 void _xcb_conn_shutdown(xcb_connection_t *c, int err);
195 
196 xcb_connection_t *_xcb_conn_ret_error(int err);
197 
198 int _xcb_conn_wait(xcb_connection_t *c, pthread_cond_t *cond, struct iovec **vector, int *count);
199 
200 
201 /* xcb_auth.c */
202 
203 int _xcb_get_auth_info(int fd, xcb_auth_info_t *info, int display);
204 
205 #ifdef GCC_HAS_VISIBILITY
206 #pragma GCC visibility pop
207 #endif
208 
209 #endif