Spade
Mini Shell
/*
* 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 __XCBEXT_H
#define __XCBEXT_H
#include "xcb.h"
#ifdef __cplusplus
extern "C" {
#endif
/* xcb_ext.c */
struct xcb_extension_t {
const char *name;
int global_id;
};
/* xcb_out.c */
typedef struct {
size_t count;
xcb_extension_t *ext;
uint8_t opcode;
uint8_t isvoid;
} xcb_protocol_request_t;
enum xcb_send_request_flags_t {
XCB_REQUEST_CHECKED = 1 << 0,
XCB_REQUEST_RAW = 1 << 1,
XCB_REQUEST_DISCARD_REPLY = 1 << 2,
XCB_REQUEST_REPLY_FDS = 1 << 3
};
/**
* @brief Send a request to the server.
* @param c The connection to the X server.
* @param flags A combination of flags from the xcb_send_request_flags_t
enumeration.
* @param vector Data to send; must have two iovecs before start for
internal use.
* @param request Information about the request to be sent.
* @return The request's sequence number on success, 0 otherwise.
*
* This function sends a new request to the X server. The data of the
request is
* given as an array of @c iovecs in the @p vector argument. The length of
that
* array and the necessary management information are given in the @p
request
* argument.
*
* When this function returns, the request might or might not be sent
already.
* Use xcb_flush() to make sure that it really was sent.
*
* Please note that this function is not the preferred way for sending
requests.
* It's better to use the generated wrapper functions.
*
* Please note that xcb might use index -1 and -2 of the @p vector array
internally,
* so they must be valid!
*/
unsigned int xcb_send_request(xcb_connection_t *c, int flags, struct iovec
*vector, const xcb_protocol_request_t *request);
/**
* @brief Send a request to the server.
* @param c The connection to the X server.
* @param flags A combination of flags from the xcb_send_request_flags_t
enumeration.
* @param vector Data to send; must have two iovecs before start for
internal use.
* @param request Information about the request to be sent.
* @param num_fds Number of additional file descriptors to send to the
server
* @param fds Additional file descriptors that should be send to the
server.
* @return The request's sequence number on success, 0 otherwise.
*
* This function sends a new request to the X server. The data of the
request is
* given as an array of @c iovecs in the @p vector argument. The length of
that
* array and the necessary management information are given in the @p
request
* argument.
*
* If @p num_fds is non-zero, @p fds points to an array of file descriptors
that
* will be sent to the X server along with this request. After this
function
* returns, all file descriptors sent are owned by xcb and will be closed
* eventually.
*
* When this function returns, the request might or might not be sent
already.
* Use xcb_flush() to make sure that it really was sent.
*
* Please note that this function is not the preferred way for sending
requests.
*
* Please note that xcb might use index -1 and -2 of the @p vector array
internally,
* so they must be valid!
*/
unsigned int xcb_send_request_with_fds(xcb_connection_t *c, int flags,
struct iovec *vector,
const xcb_protocol_request_t *request, unsigned int
num_fds, int *fds);
/**
* @brief Send a request to the server, with 64-bit sequence number
returned.
* @param c The connection to the X server.
* @param flags A combination of flags from the xcb_send_request_flags_t
enumeration.
* @param vector Data to send; must have two iovecs before start for
internal use.
* @param request Information about the request to be sent.
* @return The request's sequence number on success, 0 otherwise.
*
* This function sends a new request to the X server. The data of the
request is
* given as an array of @c iovecs in the @p vector argument. The length of
that
* array and the necessary management information are given in the @p
request
* argument.
*
* When this function returns, the request might or might not be sent
already.
* Use xcb_flush() to make sure that it really was sent.
*
* Please note that this function is not the preferred way for sending
requests.
* It's better to use the generated wrapper functions.
*
* Please note that xcb might use index -1 and -2 of the @p vector array
internally,
* so they must be valid!
*/
uint64_t xcb_send_request64(xcb_connection_t *c, int flags, struct iovec
*vector, const xcb_protocol_request_t *request);
/**
* @brief Send a request to the server, with 64-bit sequence number
returned.
* @param c The connection to the X server.
* @param flags A combination of flags from the xcb_send_request_flags_t
enumeration.
* @param vector Data to send; must have two iovecs before start for
internal use.
* @param request Information about the request to be sent.
* @param num_fds Number of additional file descriptors to send to the
server
* @param fds Additional file descriptors that should be send to the
server.
* @return The request's sequence number on success, 0 otherwise.
*
* This function sends a new request to the X server. The data of the
request is
* given as an array of @c iovecs in the @p vector argument. The length of
that
* array and the necessary management information are given in the @p
request
* argument.
*
* If @p num_fds is non-zero, @p fds points to an array of file descriptors
that
* will be sent to the X server along with this request. After this
function
* returns, all file descriptors sent are owned by xcb and will be closed
* eventually.
*
* When this function returns, the request might or might not be sent
already.
* Use xcb_flush() to make sure that it really was sent.
*
* Please note that this function is not the preferred way for sending
requests.
* It's better to use the generated wrapper functions.
*
* Please note that xcb might use index -1 and -2 of the @p vector array
internally,
* so they must be valid!
*/
uint64_t xcb_send_request_with_fds64(xcb_connection_t *c, int flags, struct
iovec *vector,
const xcb_protocol_request_t *request, unsigned int
num_fds, int *fds);
/**
* @brief Send a file descriptor to the server in the next call to
xcb_send_request.
* @param c The connection to the X server.
* @param fd The file descriptor to send.
*
* After this function returns, the file descriptor given is owned by xcb
and
* will be closed eventually.
*
* @deprecated This function cannot be used in a thread-safe way. Two
threads
* that run xcb_send_fd(); xcb_send_request(); could mix up their file
* descriptors. Instead, xcb_send_request_with_fds() should be used.
*/
void xcb_send_fd(xcb_connection_t *c, int fd);
/**
* @brief Take over the write side of the socket
* @param c The connection to the X server.
* @param return_socket Callback function that will be called when xcb
wants
* to use the socket again.
* @param closure Argument to the callback function.
* @param flags A combination of flags from the xcb_send_request_flags_t
enumeration.
* @param sent Location to the sequence number of the last sequence
request.
* Must not be NULL.
* @return 1 on success, else 0.
*
* xcb_take_socket allows external code to ask XCB for permission to
* take over the write side of the socket and send raw data with
* xcb_writev. xcb_take_socket provides the sequence number of the last
* request XCB sent. The caller of xcb_take_socket must supply a
* callback which XCB can call when it wants the write side of the
* socket back to make a request. This callback synchronizes with the
* external socket owner and flushes any output queues if appropriate.
* If you are sending requests which won't cause a reply, please note
the
* comment for xcb_writev which explains some sequence number wrap issues.
*
* All replies that are generated while the socket is owned externally have
* @p flags applied to them. For example, use XCB_REQUEST_CHECK if you
don't
* want errors to go to xcb's normal error handling, but instead
having to be
* picked up via xcb_wait_for_reply(), xcb_poll_for_reply() or
* xcb_request_check().
*/
int xcb_take_socket(xcb_connection_t *c, void (*return_socket)(void
*closure), void *closure, int flags, uint64_t *sent);
/**
* @brief Send raw data to the X server.
* @param c The connection to the X server.
* @param vector Array of data to be sent.
* @param count Number of entries in @p vector.
* @param requests Number of requests that are being sent.
* @return 1 on success, else 0.
*
* You must own the write-side of the socket (you've called
* xcb_take_socket, and haven't returned from return_socket yet) to
call
* xcb_writev. Also, the iovec must have at least 1 byte of data in it.
* You have to make sure that xcb can detect sequence number wraps
correctly.
* This means that the first request you send after xcb_take_socket must
cause a
* reply (e.g. just insert a GetInputFocus request). After every (1
<< 16) - 1
* requests without a reply, you have to insert a request which will cause
a
* reply. You can again use GetInputFocus for this. You do not have to wait
for
* any of the GetInputFocus replies, but can instead handle them via
* xcb_discard_reply().
*/
int xcb_writev(xcb_connection_t *c, struct iovec *vector, int count,
uint64_t requests);
/* xcb_in.c */
/**
* @brief Wait for the reply of a given request.
* @param c The connection to the X server.
* @param request Sequence number of the request as returned by
xcb_send_request().
* @param e Location to store errors in, or NULL. Ignored for unchecked
requests.
*
* Returns the reply to the given request or returns null in the event of
* errors. Blocks until the reply or error for the request arrives, or an
I/O
* error occurs.
*/
void *xcb_wait_for_reply(xcb_connection_t *c, unsigned int request,
xcb_generic_error_t **e);
/**
* @brief Wait for the reply of a given request, with 64-bit sequence
number
* @param c The connection to the X server.
* @param request 64-bit sequence number of the request as returned by
xcb_send_request64().
* @param e Location to store errors in, or NULL. Ignored for unchecked
requests.
*
* Returns the reply to the given request or returns null in the event of
* errors. Blocks until the reply or error for the request arrives, or an
I/O
* error occurs.
*
* Unlike its xcb_wait_for_reply() counterpart, the given sequence number
is not
* automatically "widened" to 64-bit.
*/
void *xcb_wait_for_reply64(xcb_connection_t *c, uint64_t request,
xcb_generic_error_t **e);
/**
* @brief Poll for the reply of a given request.
* @param c The connection to the X server.
* @param request Sequence number of the request as returned by
xcb_send_request().
* @param reply Location to store the reply in, must not be NULL.
* @param error Location to store errors in, or NULL. Ignored for unchecked
requests.
* @return 1 when the reply to the request was returned, else 0.
*
* Checks if the reply to the given request already received. Does not
block.
*/
int xcb_poll_for_reply(xcb_connection_t *c, unsigned int request, void
**reply, xcb_generic_error_t **error);
/**
* @brief Poll for the reply of a given request, with 64-bit sequence
number.
* @param c The connection to the X server.
* @param request 64-bit sequence number of the request as returned by
xcb_send_request().
* @param reply Location to store the reply in, must not be NULL.
* @param error Location to store errors in, or NULL. Ignored for unchecked
requests.
* @return 1 when the reply to the request was returned, else 0.
*
* Checks if the reply to the given request already received. Does not
block.
*
* Unlike its xcb_poll_for_reply() counterpart, the given sequence number
is not
* automatically "widened" to 64-bit.
*/
int xcb_poll_for_reply64(xcb_connection_t *c, uint64_t request, void
**reply, xcb_generic_error_t **error);
/**
* @brief Don't use this, only needed by the generated code.
* @param c The connection to the X server.
* @param reply A reply that was received from the server
* @param replylen The size of the reply.
* @return Pointer to the location where received file descriptors are
stored.
*/
int *xcb_get_reply_fds(xcb_connection_t *c, void *reply, size_t replylen);
/* xcb_util.c */
/**
* @param mask The mask to check
* @return The number of set bits in the mask
*/
int xcb_popcount(uint32_t mask);
/**
* @param list The base of an array
* @param len The length of the array
* @return The sum of all entries in the array.
*/
int xcb_sumof(uint8_t *list, int len);
#ifdef __cplusplus
}
#endif
#endif