XCB  1.13.1
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 #if HAVE_SENDMSG
83 #define XCB_MAX_PASS_FD 16
84 
85 typedef struct _xcb_fd {
86  int fd[XCB_MAX_PASS_FD];
87  int nfd;
88  int ifd;
89 } _xcb_fd;
90 #endif
91 
92 typedef struct _xcb_out {
93  pthread_cond_t cond;
94  int writing;
95 
96  pthread_cond_t socket_cond;
97  void (*return_socket)(void *closure);
98  void *socket_closure;
99  int socket_moving;
100 
101  char queue[XCB_QUEUE_BUFFER_SIZE];
102  int queue_len;
103 
104  uint64_t request;
105  uint64_t request_written;
106 
107  pthread_mutex_t reqlenlock;
108  enum lazy_reply_tag maximum_request_length_tag;
109  union {
111  uint32_t value;
112  } maximum_request_length;
113 #if HAVE_SENDMSG
114  _xcb_fd out_fd;
115 #endif
116 } _xcb_out;
117 
118 int _xcb_out_init(_xcb_out *out);
119 void _xcb_out_destroy(_xcb_out *out);
120 
121 int _xcb_out_send(xcb_connection_t *c, struct iovec *vector, int count);
122 void _xcb_out_send_sync(xcb_connection_t *c);
123 int _xcb_out_flush_to(xcb_connection_t *c, uint64_t request);
124 
125 
126 /* xcb_in.c */
127 
128 typedef struct _xcb_in {
129  pthread_cond_t event_cond;
130  int reading;
131 
132  char queue[4096];
133  int queue_len;
134 
135  uint64_t request_expected;
136  uint64_t request_read;
137  uint64_t request_completed;
138  struct reply_list *current_reply;
139  struct reply_list **current_reply_tail;
140 
141  _xcb_map *replies;
142  struct event_list *events;
143  struct event_list **events_tail;
144  struct reader_list *readers;
145  struct special_list *special_waiters;
146 
147  struct pending_reply *pending_replies;
148  struct pending_reply **pending_replies_tail;
149 #if HAVE_SENDMSG
150  _xcb_fd in_fd;
151 #endif
152  struct xcb_special_event *special_events;
153 } _xcb_in;
154 
155 int _xcb_in_init(_xcb_in *in);
156 void _xcb_in_destroy(_xcb_in *in);
157 
158 void _xcb_in_wake_up_next_reader(xcb_connection_t *c);
159 
160 int _xcb_in_expect_reply(xcb_connection_t *c, uint64_t request, enum workarounds workaround, int flags);
161 void _xcb_in_replies_done(xcb_connection_t *c);
162 
163 int _xcb_in_read(xcb_connection_t *c);
164 int _xcb_in_read_block(xcb_connection_t *c, void *buf, int nread);
165 
166 
167 /* xcb_xid.c */
168 
169 typedef struct _xcb_xid {
170  pthread_mutex_t lock;
171  uint32_t last;
172  uint32_t base;
173  uint32_t max;
174  uint32_t inc;
175 } _xcb_xid;
176 
177 int _xcb_xid_init(xcb_connection_t *c);
178 void _xcb_xid_destroy(xcb_connection_t *c);
179 
180 
181 /* xcb_ext.c */
182 
183 typedef struct _xcb_ext {
184  pthread_mutex_t lock;
185  struct lazyreply *extensions;
186  int extensions_size;
187 } _xcb_ext;
188 
189 int _xcb_ext_init(xcb_connection_t *c);
190 void _xcb_ext_destroy(xcb_connection_t *c);
191 
192 
193 /* xcb_conn.c */
194 
196  /* This must be the first field; see _xcb_conn_ret_error(). */
197  int has_error;
198 
199  /* constant data */
200  xcb_setup_t *setup;
201  int fd;
202 
203  /* I/O data */
204  pthread_mutex_t iolock;
205  _xcb_in in;
206  _xcb_out out;
207 
208  /* misc data */
209  _xcb_ext ext;
210  _xcb_xid xid;
211 };
212 
213 void _xcb_conn_shutdown(xcb_connection_t *c, int err);
214 
215 xcb_connection_t *_xcb_conn_ret_error(int err);
216 
217 int _xcb_conn_wait(xcb_connection_t *c, pthread_cond_t *cond, struct iovec **vector, int *count);
218 
219 
220 /* xcb_auth.c */
221 
222 int _xcb_get_auth_info(int fd, xcb_auth_info_t *info, int display);
223 
224 #ifdef GCC_HAS_VISIBILITY
225 #pragma GCC visibility pop
226 #endif
227 
228 #endif
_xcb_in
Definition: xcbint.h:128
special_list
Definition: xcb_in.c:100
_xcb_ext
Definition: xcbint.h:183
xcb_special_event
Definition: xcb_in.c:64
_xcb_xid
Definition: xcbint.h:169
xcb_auth_info_t
Container for authorization information.
Definition: xcb.h:228
xcb_connection_t
Definition: xcbint.h:195
pending_reply
Definition: xcb_in.c:86
lazyreply
Definition: xcb_ext.c:39
iovec
Definition: xcb_windefs.h:38
reader_list
Definition: xcb_in.c:94
event_list
Definition: xcb_in.c:59
_xcb_out
Definition: xcbint.h:92
reply_list
Definition: xcb_in.c:81
_xcb_map
Definition: xcb_list.c:43
xcb_setup_t
xcb_setup_t
Definition: xproto.h:475