xcbint.h revision 602e473d 
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
41enum workarounds {
42    WORKAROUND_NONE,
43    WORKAROUND_GLX_GET_FB_CONFIGS_BUG,
44    WORKAROUND_EXTERNAL_SOCKET_OWNER
45};
46
47enum 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#define XCB_SEQUENCE_COMPARE_32(a,op,b)	(((int) (a) - (int) (b)) op 0)
58
59#ifndef offsetof
60#define offsetof(type,member) ((size_t) &((type *)0)->member)
61#endif
62
63#ifndef MIN
64#define MIN(x,y) ((x) < (y) ? (x) : (y))
65#endif
66
67#define container_of(pointer,type,member) ((type *)(((char *)(pointer)) - offsetof(type, member)))
68
69/* xcb_list.c */
70
71typedef void (*xcb_list_free_func_t)(void *);
72
73typedef struct _xcb_map _xcb_map;
74
75_xcb_map *_xcb_map_new(void);
76void _xcb_map_delete(_xcb_map *q, xcb_list_free_func_t do_free);
77int _xcb_map_put(_xcb_map *q, unsigned int key, void *data);
78void *_xcb_map_remove(_xcb_map *q, unsigned int key);
79
80
81/* xcb_out.c */
82
83typedef struct _xcb_out {
84    pthread_cond_t cond;
85    int writing;
86
87    pthread_cond_t socket_cond;
88    void (*return_socket)(void *closure);
89    void *socket_closure;
90    int socket_moving;
91
92    char queue[XCB_QUEUE_BUFFER_SIZE];
93    int queue_len;
94
95    uint64_t request;
96    uint64_t request_written;
97
98    pthread_mutex_t reqlenlock;
99    enum lazy_reply_tag maximum_request_length_tag;
100    union {
101        xcb_big_requests_enable_cookie_t cookie;
102        uint32_t value;
103    } maximum_request_length;
104} _xcb_out;
105
106int _xcb_out_init(_xcb_out *out);
107void _xcb_out_destroy(_xcb_out *out);
108
109int _xcb_out_send(xcb_connection_t *c, struct iovec **vector, int *count);
110int _xcb_out_flush_to(xcb_connection_t *c, uint64_t request);
111
112
113/* xcb_in.c */
114
115typedef 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
137int _xcb_in_init(_xcb_in *in);
138void _xcb_in_destroy(_xcb_in *in);
139
140int _xcb_in_expect_reply(xcb_connection_t *c, uint64_t request, enum workarounds workaround, int flags);
141void _xcb_in_replies_done(xcb_connection_t *c);
142
143int _xcb_in_read(xcb_connection_t *c);
144int _xcb_in_read_block(xcb_connection_t *c, void *buf, int nread);
145
146
147/* xcb_xid.c */
148
149typedef struct _xcb_xid {
150    pthread_mutex_t lock;
151    uint32_t last;
152    uint32_t base;
153    uint32_t max;
154    uint32_t inc;
155} _xcb_xid;
156
157int _xcb_xid_init(xcb_connection_t *c);
158void _xcb_xid_destroy(xcb_connection_t *c);
159
160
161/* xcb_ext.c */
162
163typedef struct _xcb_ext {
164    pthread_mutex_t lock;
165    struct lazyreply *extensions;
166    int extensions_size;
167} _xcb_ext;
168
169int _xcb_ext_init(xcb_connection_t *c);
170void _xcb_ext_destroy(xcb_connection_t *c);
171
172
173/* xcb_conn.c */
174
175struct xcb_connection_t {
176    int has_error;
177
178    /* constant data */
179    xcb_setup_t *setup;
180    int fd;
181
182    /* I/O data */
183    pthread_mutex_t iolock;
184    _xcb_in in;
185    _xcb_out out;
186
187    /* misc data */
188    _xcb_ext ext;
189    _xcb_xid xid;
190};
191
192void _xcb_conn_shutdown(xcb_connection_t *c);
193int _xcb_conn_wait(xcb_connection_t *c, pthread_cond_t *cond, struct iovec **vector, int *count);
194
195
196/* xcb_auth.c */
197
198int _xcb_get_auth_info(int fd, xcb_auth_info_t *info, int display);
199
200#ifdef GCC_HAS_VISIBILITY
201#pragma GCC visibility pop
202#endif
203
204#endif
205