/*

 * 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

#include "bigreq.h"

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#ifdef GCC_HAS_VISIBILITY

#pragma GCC visibility push(hidden)

#endif

enum workarounds {

    WORKAROUND_NONE,

    WORKAROUND_GLX_GET_FB_CONFIGS_BUG,

    WORKAROUND_EXTERNAL_SOCKET_OWNER

};

enum lazy_reply_tag

{

    LAZY_NONE = 0,

    LAZY_COOKIE,

    LAZY_FORCED

};

#define XCB_PAD(i) (-(i) & 3)

#define XCB_SEQUENCE_COMPARE(a,op,b)    ((int64_t) ((a) - (b)) op 0)

#ifndef offsetof

#define offsetof(type,member) ((size_t) &((type *)0)->member)

#endif

#ifndef MIN

#define MIN(x,y) ((x) < (y) ? (x) : (y))

#endif

#define container_of(pointer,type,member) ((type *)(((char *)(pointer)) - offsetof(type, member)))

/* xcb_list.c */

typedef void (*xcb_list_free_func_t)(void *);

typedef struct _xcb_map _xcb_map;

_xcb_map *_xcb_map_new(void);

void _xcb_map_delete(_xcb_map *q, xcb_list_free_func_t do_free);

int _xcb_map_put(_xcb_map *q, unsigned int key, void *data);

void *_xcb_map_remove(_xcb_map *q, unsigned int key);

/* xcb_out.c */

#if HAVE_SENDMSG

#define XCB_MAX_PASS_FD 16

typedef struct _xcb_fd {

    int fd[XCB_MAX_PASS_FD];

    int nfd;

    int ifd;

} _xcb_fd;

#endif

typedef struct _xcb_out {

    pthread_cond_t cond;

    int writing;

    pthread_cond_t socket_cond;

    void (*return_socket)(void *closure);

    void *socket_closure;

    int socket_moving;

    char queue[XCB_QUEUE_BUFFER_SIZE];

    int queue_len;

    uint64_t request;

    uint64_t request_written;

    pthread_mutex_t reqlenlock;

    enum lazy_reply_tag maximum_request_length_tag;

    union {

        xcb_big_requests_enable_cookie_t cookie;

        uint32_t value;

    } maximum_request_length;

#if HAVE_SENDMSG

    _xcb_fd out_fd;

#endif

} _xcb_out;

int _xcb_out_init(_xcb_out *out);

void _xcb_out_destroy(_xcb_out *out);

int _xcb_out_send(xcb_connection_t *c, struct iovec *vector, int count);

void _xcb_out_send_sync(xcb_connection_t *c);

int _xcb_out_flush_to(xcb_connection_t *c, uint64_t request);

/* xcb_in.c */

typedef struct _xcb_in {

    pthread_cond_t event_cond;

    int reading;

    char queue[4096];

    int queue_len;

    uint64_t request_expected;

    uint64_t request_read;

    uint64_t request_completed;

    struct reply_list *current_reply;

    struct reply_list **current_reply_tail;

    _xcb_map *replies;

    struct event_list *events;

    struct event_list **events_tail;

    struct reader_list *readers;

    struct special_list *special_waiters;

    struct pending_reply *pending_replies;

    struct pending_reply **pending_replies_tail;

#if HAVE_SENDMSG

    _xcb_fd in_fd;

#endif

    struct xcb_special_event *special_events;

} _xcb_in;

int _xcb_in_init(_xcb_in *in);

void _xcb_in_destroy(_xcb_in *in);

void _xcb_in_wake_up_next_reader(xcb_connection_t *c);

int _xcb_in_expect_reply(xcb_connection_t *c, uint64_t request, enum workarounds workaround, int flags);

void _xcb_in_replies_done(xcb_connection_t *c);

int _xcb_in_read(xcb_connection_t *c);

int _xcb_in_read_block(xcb_connection_t *c, void *buf, int nread);

/* xcb_xid.c */

typedef struct _xcb_xid {

    pthread_mutex_t lock;

    uint32_t last;

    uint32_t base;

    uint32_t max;

    uint32_t inc;

} _xcb_xid;

int _xcb_xid_init(xcb_connection_t *c);

void _xcb_xid_destroy(xcb_connection_t *c);

/* xcb_ext.c */

typedef struct _xcb_ext {

    pthread_mutex_t lock;

    struct lazyreply *extensions;

    int extensions_size;

} _xcb_ext;

int _xcb_ext_init(xcb_connection_t *c);

void _xcb_ext_destroy(xcb_connection_t *c);

/* xcb_conn.c */

struct xcb_connection_t {

    /* This must be the first field; see _xcb_conn_ret_error(). */

    int has_error;

    /* constant data */

    xcb_setup_t *setup;

    int fd;

    /* I/O data */

    pthread_mutex_t iolock;

    _xcb_in in;

    _xcb_out out;

    /* misc data */

    _xcb_ext ext;

    _xcb_xid xid;

};

void _xcb_conn_shutdown(xcb_connection_t *c, int err);

xcb_connection_t *_xcb_conn_ret_error(int err);

int _xcb_conn_wait(xcb_connection_t *c, pthread_cond_t *cond, struct iovec **vector, int *count);

/* xcb_auth.c */

int _xcb_get_auth_info(int fd, xcb_auth_info_t *info, int display);

#ifdef GCC_HAS_VISIBILITY

#pragma GCC visibility pop

#endif

#endif