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/*
* Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the names of the authors or their
* institutions shall not be used in advertising or otherwise to promote the
* sale, use or other dealings in this Software without prior written
* authorization from the authors.
*/
#ifndef __XCBINT_H
#define __XCBINT_H
/* Not simply (a <= b) because eventually the 32-bit sequence number
* will wrap, causing earlier sequence numbers to be higher than later
* ones for a brief but fatal period. (a and b must be unsigned.) */
#define _xcb_assert_sequence_less(a,b) assert((b) - (a) < 65536)
#define _xcb_assert_valid_sequence(c) do { \
_xcb_assert_sequence_less((c)->in.request_read, (c)->out.request_written); \
_xcb_assert_sequence_less((c)->out.request_written, (c)->out.request); \
} while(0)
/* xcb_list.c */
typedef struct _xcb_list _xcb_list;
typedef void (*XCBListFreeFunc)(void *);
_xcb_list *_xcb_list_new(void);
void _xcb_list_delete(_xcb_list *list, XCBListFreeFunc do_free);
int _xcb_list_insert(_xcb_list *list, void *data);
int _xcb_list_append(_xcb_list *list, void *data);
void *_xcb_list_peek_head(_xcb_list *list);
void *_xcb_list_remove_head(_xcb_list *list);
void *_xcb_list_remove(_xcb_list *list, int (*cmp)(const void *, const void *), const void *data);
void *_xcb_list_find(_xcb_list *list, int (*cmp)(const void *, const void *), const void *data);
typedef _xcb_list _xcb_queue;
_xcb_queue *_xcb_queue_new(void);
void _xcb_queue_delete(_xcb_queue *q, XCBListFreeFunc do_free);
int _xcb_queue_enqueue(_xcb_queue *q, void *data);
void *_xcb_queue_dequeue(_xcb_queue *q);
int _xcb_queue_is_empty(_xcb_queue *q);
typedef _xcb_list _xcb_map;
_xcb_map *_xcb_map_new(void);
void _xcb_map_delete(_xcb_map *q, XCBListFreeFunc do_free);
int _xcb_map_put(_xcb_map *q, unsigned int key, void *data);
void *_xcb_map_get(_xcb_map *q, unsigned int key);
void *_xcb_map_remove(_xcb_map *q, unsigned int key);
/* xcb_util.c */
/* Index of nearest 4-byte boundary following E. */
#define XCB_CEIL(E) (((E)+3)&~3)
#define XCB_PAD(i) ((4 - (i & 3)) & 3)
int _xcb_set_fd_flags(const int fd);
int _xcb_readn(const int fd, void *buf, const int buflen, int *count);
int _xcb_read_block(const int fd, void *buf, const size_t len);
int _xcb_write(const int fd, char (*buf)[], int *count);
int _xcb_writev(const int fd, struct iovec *vec, int count);
/* xcb_out.c */
typedef struct _xcb_out {
pthread_cond_t cond;
int writing;
char queue[4096];
int queue_len;
struct iovec *vec;
int vec_len;
void *last_request;
unsigned int request;
unsigned int request_written;
pthread_mutex_t reqlenlock;
CARD32 maximum_request_length;
} _xcb_out;
int _xcb_out_init(_xcb_out *out);
void _xcb_out_destroy(_xcb_out *out);
int _xcb_out_write(XCBConnection *c);
int _xcb_out_write_block(XCBConnection *c, struct iovec *vector, size_t count);
int _xcb_out_flush(XCBConnection *c);
/* xcb_in.c */
typedef struct _xcb_in {
pthread_cond_t event_cond;
int reading;
char queue[4096];
int queue_len;
unsigned int request_read;
_xcb_queue *current_reply;
_xcb_map *replies;
_xcb_queue *events;
_xcb_list *readers;
} _xcb_in;
int _xcb_in_init(_xcb_in *in);
void _xcb_in_destroy(_xcb_in *in);
int _xcb_in_expect_reply(XCBConnection *c, unsigned int request);
int _xcb_in_read_packet(XCBConnection *c);
int _xcb_in_read(XCBConnection *c);
int _xcb_in_read_block(XCBConnection *c, void *buf, int nread);
/* xcb_xid.c */
typedef struct _xcb_xid {
pthread_mutex_t lock;
CARD32 last;
CARD32 base;
CARD32 max;
CARD32 inc;
} _xcb_xid;
int _xcb_xid_init(XCBConnection *c);
void _xcb_xid_destroy(XCBConnection *c);
/* xcb_ext.c */
typedef struct _xcb_ext {
pthread_mutex_t lock;
_xcb_map *extensions;
} _xcb_ext;
int _xcb_ext_init(XCBConnection *c);
void _xcb_ext_destroy(XCBConnection *c);
/* xcb_conn.c */
struct XCBConnection {
/* constant data */
XCBConnSetupSuccessRep *setup;
int fd;
/* I/O data */
pthread_mutex_t iolock;
_xcb_in in;
_xcb_out out;
/* misc data */
_xcb_ext ext;
_xcb_xid xid;
};
int _xcb_conn_wait(XCBConnection *c, const int should_write, pthread_cond_t *cond);
#endif
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