xcbint.h revision 21298544 
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
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
70typedef void (*xcb_list_free_func_t)(void *);
71
72typedef struct _xcb_map _xcb_map;
73
74_xcb_map *_xcb_map_new(void);
75void _xcb_map_delete(_xcb_map *q, xcb_list_free_func_t do_free);
76int _xcb_map_put(_xcb_map *q, unsigned int key, void *data);
77void *_xcb_map_remove(_xcb_map *q, unsigned int key);
78
79
80/* xcb_out.c */
81
82typedef 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 {
100        xcb_big_requests_enable_cookie_t cookie;
101        uint32_t value;
102    } maximum_request_length;
103} _xcb_out;
104
105int _xcb_out_init(_xcb_out *out);
106void _xcb_out_destroy(_xcb_out *out);
107
108int _xcb_out_send(xcb_connection_t *c, struct iovec *vector, int count);
109void _xcb_out_send_sync(xcb_connection_t *c);
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
140void _xcb_in_wake_up_next_reader(xcb_connection_t *c);
141
142int _xcb_in_expect_reply(xcb_connection_t *c, uint64_t request, enum workarounds workaround, int flags);
143void _xcb_in_replies_done(xcb_connection_t *c);
144
145int _xcb_in_read(xcb_connection_t *c);
146int _xcb_in_read_block(xcb_connection_t *c, void *buf, int nread);
147
148
149/* xcb_xid.c */
150
151typedef 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
159int _xcb_xid_init(xcb_connection_t *c);
160void _xcb_xid_destroy(xcb_connection_t *c);
161
162
163/* xcb_ext.c */
164
165typedef struct _xcb_ext {
166    pthread_mutex_t lock;
167    struct lazyreply *extensions;
168    int extensions_size;
169} _xcb_ext;
170
171int _xcb_ext_init(xcb_connection_t *c);
172void _xcb_ext_destroy(xcb_connection_t *c);
173
174
175/* xcb_conn.c */
176
177struct xcb_connection_t {
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
194void _xcb_conn_shutdown(xcb_connection_t *c, int err);
195
196xcb_connection_t *_xcb_conn_ret_error(int err);
197
198int _xcb_conn_wait(xcb_connection_t *c, pthread_cond_t *cond, struct iovec **vector, int *count);
199
200
201/* xcb_auth.c */
202
203int _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
210