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# 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 #define XCB_SEQUENCE_COMPARE_32(a,op,b) (((int) (a) - (int) (b)) op 0)
    00058
    00059 #ifndef offsetof
    00060 #define offsetof(type,member) ((size_t) &((type *)0)->member)
    00061 #endif
    00062
    00063 #ifndef MIN
    00064 #define MIN(x,y) ((x) < (y) ? (x) : (y))
    00065 #endif
    00066
    00067 #define container_of(pointer,type,member) ((type *)(((char *)(pointer)) - offsetof(type, member)))
    00068
    00069 /* xcb_list.c */
    00070
    00071 typedef void (*xcb_list_free_func_t)(void *);
    00072
    00073 typedef struct _xcb_map _xcb_map;
    00074
    00075 _xcb_map *_xcb_map_new(void);
    00076 void _xcb_map_delete(_xcb_map *q, xcb_list_free_func_t do_free);
    00077 int _xcb_map_put(_xcb_map *q, unsigned int key, void *data);
    00078 void *_xcb_map_remove(_xcb_map *q, unsigned int key);
    00079
    00080
    00081 /* xcb_out.c */
    00082
    00083 typedef struct _xcb_out {
    00084     pthread_cond_t cond;
    00085     int writing;
    00086
    00087     pthread_cond_t socket_cond;
    00088     void (*return_socket)(void *closure);
    00089     void *socket_closure;
    00090     int socket_moving;
    00091
    00092     char queue[XCB_QUEUE_BUFFER_SIZE];
    00093     int queue_len;
    00094
    00095     uint64_t request;
    00096     uint64_t request_written;
    00097
    00098     pthread_mutex_t reqlenlock;
    00099     enum lazy_reply_tag maximum_request_length_tag;
    00100     union {
    00101         xcb_big_requests_enable_cookie_t cookie;
    00102         uint32_t value;
    00103     } maximum_request_length;
    00104 } _xcb_out;
    00105
    00106 int _xcb_out_init(_xcb_out *out);
    00107 void _xcb_out_destroy(_xcb_out *out);
    00108
    00109 int _xcb_out_send(xcb_connection_t *c, struct iovec *vector, int count);
    00110 int _xcb_out_flush_to(xcb_connection_t *c, uint64_t request);
    00111
    00112
    00113 /* xcb_in.c */
    00114
    00115 typedef struct _xcb_in {
    00116     pthread_cond_t event_cond;
    00117     int reading;
    00118
    00119     char queue[4096];
    00120     int queue_len;
    00121
    00122     uint64_t request_expected;
    00123     uint64_t request_read;
    00124     uint64_t request_completed;
    00125     struct reply_list *current_reply;
    00126     struct reply_list **current_reply_tail;
    00127
    00128     _xcb_map *replies;
    00129     struct event_list *events;
    00130     struct event_list **events_tail;
    00131     struct reader_list *readers;
    00132
    00133     struct pending_reply *pending_replies;
    00134     struct pending_reply **pending_replies_tail;
    00135 } _xcb_in;
    00136
    00137 int _xcb_in_init(_xcb_in *in);
    00138 void _xcb_in_destroy(_xcb_in *in);
    00139
    00140 void _xcb_in_wake_up_next_reader(xcb_connection_t *c);
    00141
    00142 int _xcb_in_expect_reply(xcb_connection_t *c, uint64_t request, enum workarounds workaround, int flags);
    00143 void _xcb_in_replies_done(xcb_connection_t *c);
    00144
    00145 int _xcb_in_read(xcb_connection_t *c);
    00146 int _xcb_in_read_block(xcb_connection_t *c, void *buf, int nread);
    00147
    00148
    00149 /* xcb_xid.c */
    00150
    00151 typedef struct _xcb_xid {
    00152     pthread_mutex_t lock;
    00153     uint32_t last;
    00154     uint32_t base;
    00155     uint32_t max;
    00156     uint32_t inc;
    00157 } _xcb_xid;
    00158
    00159 int _xcb_xid_init(xcb_connection_t *c);
    00160 void _xcb_xid_destroy(xcb_connection_t *c);
    00161
    00162
    00163 /* xcb_ext.c */
    00164
    00165 typedef struct _xcb_ext {
    00166     pthread_mutex_t lock;
    00167     struct lazyreply *extensions;
    00168     int extensions_size;
    00169 } _xcb_ext;
    00170
    00171 int _xcb_ext_init(xcb_connection_t *c);
    00172 void _xcb_ext_destroy(xcb_connection_t *c);
    00173
    00174
    00175 /* xcb_conn.c */
    00176
    00177 struct xcb_connection_t {
    00178     int has_error;
    00179
    00180     /* constant data */
    00181     xcb_setup_t *setup;
    00182     int fd;
    00183
    00184     /* I/O data */
    00185     pthread_mutex_t iolock;
    00186     _xcb_in in;
    00187     _xcb_out out;
    00188
    00189     /* misc data */
    00190     _xcb_ext ext;
    00191     _xcb_xid xid;
    00192 };
    00193
    00194 void _xcb_conn_shutdown(xcb_connection_t *c);
    00195 int _xcb_conn_wait(xcb_connection_t *c, pthread_cond_t *cond, struct iovec **vector, int *count);
    00196
    00197
    00198 /* xcb_auth.c */
    00199
    00200 int _xcb_get_auth_info(int fd, xcb_auth_info_t *info, int display);
    00201
    00202 #ifdef GCC_HAS_VISIBILITY
    00203 #pragma GCC visibility pop
    00204 #endif
    00205
    00206 #endif