XCB  1.11.1
xcbint.h
00001 /*
00002  * Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
00003  * All Rights Reserved.
00004  *
00005  * Permission is hereby granted, free of charge, to any person obtaining a
00006  * copy of this software and associated documentation files (the "Software"),
00007  * to deal in the Software without restriction, including without limitation
00008  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
00009  * and/or sell copies of the Software, and to permit persons to whom the
00010  * Software is furnished to do so, subject to the following conditions:
00011  * 
00012  * The above copyright notice and this permission notice shall be included in
00013  * all copies or substantial portions of the Software.
00014  * 
00015  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00016  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00017  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00018  * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
00019  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
00020  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00021  * 
00022  * Except as contained in this notice, the names of the authors or their
00023  * institutions shall not be used in advertising or otherwise to promote the
00024  * sale, use or other dealings in this Software without prior written
00025  * authorization from the authors.
00026  */
00027 
00028 #ifndef __XCBINT_H
00029 #define __XCBINT_H
00030 
00031 #include "bigreq.h"
00032 
00033 #ifdef HAVE_CONFIG_H
00034 #include "config.h"
00035 #endif
00036 
00037 #ifdef GCC_HAS_VISIBILITY
00038 #pragma GCC visibility push(hidden)
00039 #endif
00040 
00041 enum workarounds {
00042     WORKAROUND_NONE,
00043     WORKAROUND_GLX_GET_FB_CONFIGS_BUG,
00044     WORKAROUND_EXTERNAL_SOCKET_OWNER
00045 };
00046 
00047 enum lazy_reply_tag
00048 {
00049     LAZY_NONE = 0,
00050     LAZY_COOKIE,
00051     LAZY_FORCED
00052 };
00053 
00054 #define XCB_PAD(i) (-(i) & 3)
00055 
00056 #define XCB_SEQUENCE_COMPARE(a,op,b)    ((int64_t) ((a) - (b)) op 0)
00057 
00058 #ifndef offsetof
00059 #define offsetof(type,member) ((size_t) &((type *)0)->member)
00060 #endif
00061 
00062 #ifndef MIN
00063 #define MIN(x,y) ((x) < (y) ? (x) : (y))
00064 #endif
00065 
00066 #define container_of(pointer,type,member) ((type *)(((char *)(pointer)) - offsetof(type, member)))
00067 
00068 /* xcb_list.c */
00069 
00070 typedef void (*xcb_list_free_func_t)(void *);
00071 
00072 typedef struct _xcb_map _xcb_map;
00073 
00074 _xcb_map *_xcb_map_new(void);
00075 void _xcb_map_delete(_xcb_map *q, xcb_list_free_func_t do_free);
00076 int _xcb_map_put(_xcb_map *q, unsigned int key, void *data);
00077 void *_xcb_map_remove(_xcb_map *q, unsigned int key);
00078 
00079 
00080 /* xcb_out.c */
00081 
00082 #if HAVE_SENDMSG
00083 #define XCB_MAX_PASS_FD 16
00084 
00085 typedef struct _xcb_fd {
00086     int fd[XCB_MAX_PASS_FD];
00087     int nfd;
00088     int ifd;
00089 } _xcb_fd;
00090 #endif
00091 
00092 typedef struct _xcb_out {
00093     pthread_cond_t cond;
00094     int writing;
00095 
00096     pthread_cond_t socket_cond;
00097     void (*return_socket)(void *closure);
00098     void *socket_closure;
00099     int socket_moving;
00100 
00101     char queue[XCB_QUEUE_BUFFER_SIZE];
00102     int queue_len;
00103 
00104     uint64_t request;
00105     uint64_t request_written;
00106 
00107     pthread_mutex_t reqlenlock;
00108     enum lazy_reply_tag maximum_request_length_tag;
00109     union {
00110         xcb_big_requests_enable_cookie_t cookie;
00111         uint32_t value;
00112     } maximum_request_length;
00113 #if HAVE_SENDMSG
00114     _xcb_fd out_fd;
00115 #endif
00116 } _xcb_out;
00117 
00118 int _xcb_out_init(_xcb_out *out);
00119 void _xcb_out_destroy(_xcb_out *out);
00120 
00121 int _xcb_out_send(xcb_connection_t *c, struct iovec *vector, int count);
00122 void _xcb_out_send_sync(xcb_connection_t *c);
00123 int _xcb_out_flush_to(xcb_connection_t *c, uint64_t request);
00124 
00125 
00126 /* xcb_in.c */
00127 
00128 typedef struct _xcb_in {
00129     pthread_cond_t event_cond;
00130     int reading;
00131 
00132     char queue[4096];
00133     int queue_len;
00134 
00135     uint64_t request_expected;
00136     uint64_t request_read;
00137     uint64_t request_completed;
00138     struct reply_list *current_reply;
00139     struct reply_list **current_reply_tail;
00140 
00141     _xcb_map *replies;
00142     struct event_list *events;
00143     struct event_list **events_tail;
00144     struct reader_list *readers;
00145     struct special_list *special_waiters;
00146 
00147     struct pending_reply *pending_replies;
00148     struct pending_reply **pending_replies_tail;
00149 #if HAVE_SENDMSG
00150     _xcb_fd in_fd;
00151 #endif
00152     struct xcb_special_event *special_events;
00153 } _xcb_in;
00154 
00155 int _xcb_in_init(_xcb_in *in);
00156 void _xcb_in_destroy(_xcb_in *in);
00157 
00158 void _xcb_in_wake_up_next_reader(xcb_connection_t *c);
00159 
00160 int _xcb_in_expect_reply(xcb_connection_t *c, uint64_t request, enum workarounds workaround, int flags);
00161 void _xcb_in_replies_done(xcb_connection_t *c);
00162 
00163 int _xcb_in_read(xcb_connection_t *c);
00164 int _xcb_in_read_block(xcb_connection_t *c, void *buf, int nread);
00165 
00166 
00167 /* xcb_xid.c */
00168 
00169 typedef struct _xcb_xid {
00170     pthread_mutex_t lock;
00171     uint32_t last;
00172     uint32_t base;
00173     uint32_t max;
00174     uint32_t inc;
00175 } _xcb_xid;
00176 
00177 int _xcb_xid_init(xcb_connection_t *c);
00178 void _xcb_xid_destroy(xcb_connection_t *c);
00179 
00180 
00181 /* xcb_ext.c */
00182 
00183 typedef struct _xcb_ext {
00184     pthread_mutex_t lock;
00185     struct lazyreply *extensions;
00186     int extensions_size;
00187 } _xcb_ext;
00188 
00189 int _xcb_ext_init(xcb_connection_t *c);
00190 void _xcb_ext_destroy(xcb_connection_t *c);
00191 
00192 
00193 /* xcb_conn.c */
00194 
00195 struct xcb_connection_t {
00196     /* This must be the first field; see _xcb_conn_ret_error(). */
00197     int has_error;
00198 
00199     /* constant data */
00200     xcb_setup_t *setup;
00201     int fd;
00202 
00203     /* I/O data */
00204     pthread_mutex_t iolock;
00205     _xcb_in in;
00206     _xcb_out out;
00207 
00208     /* misc data */
00209     _xcb_ext ext;
00210     _xcb_xid xid;
00211 };
00212 
00213 void _xcb_conn_shutdown(xcb_connection_t *c, int err);
00214 
00215 xcb_connection_t *_xcb_conn_ret_error(int err);
00216 
00217 int _xcb_conn_wait(xcb_connection_t *c, pthread_cond_t *cond, struct iovec **vector, int *count);
00218 
00219 
00220 /* xcb_auth.c */
00221 
00222 int _xcb_get_auth_info(int fd, xcb_auth_info_t *info, int display);
00223 
00224 #ifdef GCC_HAS_VISIBILITY
00225 #pragma GCC visibility pop
00226 #endif
00227 
00228 #endif