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 uint64_t total_written; 107 108 pthread_mutex_t reqlenlock; 109 enum lazy_reply_tag maximum_request_length_tag; 110 union { 111 xcb_big_requests_enable_cookie_t cookie; 112 uint32_t value; 113 } maximum_request_length; 114 #if HAVE_SENDMSG 115 _xcb_fd out_fd; 116 #endif 117 } _xcb_out; 118 119 int _xcb_out_init(_xcb_out *out); 120 void _xcb_out_destroy(_xcb_out *out); 121 122 int _xcb_out_send(xcb_connection_t *c, struct iovec *vector, int count); 123 void _xcb_out_send_sync(xcb_connection_t *c); 124 int _xcb_out_flush_to(xcb_connection_t *c, uint64_t request); 125 126 127 /* xcb_in.c */ 128 129 typedef struct _xcb_in { 130 pthread_cond_t event_cond; 131 int reading; 132 133 char queue[4096]; 134 int queue_len; 135 136 uint64_t request_expected; 137 uint64_t request_read; 138 uint64_t request_completed; 139 uint64_t total_read; 140 struct reply_list *current_reply; 141 struct reply_list **current_reply_tail; 142 143 _xcb_map *replies; 144 struct event_list *events; 145 struct event_list **events_tail; 146 struct reader_list *readers; 147 struct special_list *special_waiters; 148 149 struct pending_reply *pending_replies; 150 struct pending_reply **pending_replies_tail; 151 #if HAVE_SENDMSG 152 _xcb_fd in_fd; 153 #endif 154 struct xcb_special_event *special_events; 155 } _xcb_in; 156 157 int _xcb_in_init(_xcb_in *in); 158 void _xcb_in_destroy(_xcb_in *in); 159 160 void _xcb_in_wake_up_next_reader(xcb_connection_t *c); 161 162 int _xcb_in_expect_reply(xcb_connection_t *c, uint64_t request, enum workarounds workaround, int flags); 163 void _xcb_in_replies_done(xcb_connection_t *c); 164 165 int _xcb_in_read(xcb_connection_t *c); 166 int _xcb_in_read_block(xcb_connection_t *c, void *buf, int nread); 167 168 169 /* xcb_xid.c */ 170 171 typedef struct _xcb_xid { 172 pthread_mutex_t lock; 173 uint32_t last; 174 uint32_t base; 175 uint32_t max; 176 uint32_t inc; 177 } _xcb_xid; 178 179 int _xcb_xid_init(xcb_connection_t *c); 180 void _xcb_xid_destroy(xcb_connection_t *c); 181 182 183 /* xcb_ext.c */ 184 185 typedef struct _xcb_ext { 186 pthread_mutex_t lock; 187 struct lazyreply *extensions; 188 int extensions_size; 189 } _xcb_ext; 190 191 int _xcb_ext_init(xcb_connection_t *c); 192 void _xcb_ext_destroy(xcb_connection_t *c); 193 194 195 /* xcb_conn.c */ 196 197 struct xcb_connection_t { 198 /* This must be the first field; see _xcb_conn_ret_error(). */ 199 int has_error; 200 201 /* constant data */ 202 xcb_setup_t *setup; 203 int fd; 204 205 /* I/O data */ 206 pthread_mutex_t iolock; 207 _xcb_in in; 208 _xcb_out out; 209 210 /* misc data */ 211 _xcb_ext ext; 212 _xcb_xid xid; 213 }; 214 215 void _xcb_conn_shutdown(xcb_connection_t *c, int err); 216 217 xcb_connection_t *_xcb_conn_ret_error(int err); 218 219 int _xcb_conn_wait(xcb_connection_t *c, pthread_cond_t *cond, struct iovec **vector, int *count); 220 221 222 /* xcb_auth.c */ 223 224 int _xcb_get_auth_info(int fd, xcb_auth_info_t *info, int display); 225 226 #ifdef GCC_HAS_VISIBILITY 227 #pragma GCC visibility pop 228 #endif 229 230 #endif 231