#include <stdint.h>
#endif
+#ifndef _WIN32
#include <sys/uio.h>
+#else
+#include "xcb_windefs.h"
+#endif
#include <pthread.h>
/** X_TCP_PORT + display number = server port for TCP transport */
#define X_TCP_PORT 6000
+/** xcb connection errors because of socket, pipe and other stream errors. */
+#define XCB_CONN_ERROR 1
+
+/** xcb connection shutdown because of extension not supported */
+#define XCB_CONN_CLOSED_EXT_NOTSUPPORTED 2
+
+/** malloc(), calloc() and realloc() error upon failure, for eg ENOMEM */
+#define XCB_CONN_CLOSED_MEM_INSUFFICIENT 3
+
+/** Connection closed, exceeding request length that server accepts. */
+#define XCB_CONN_CLOSED_REQ_LEN_EXCEED 4
+
+/** Connection closed, error during parsing display string. */
+#define XCB_CONN_CLOSED_PARSE_ERR 5
+
+/** Connection closed because the server does not have a screen matching the display. */
+#define XCB_CONN_CLOSED_INVALID_SCREEN 6
+
+/** Connection closed because some FD passing operation failed */
+#define XCB_CONN_CLOSED_FDPASSING_FAILED 7
+
#define XCB_TYPE_PAD(T,I) (-(I) & (sizeof(T) > 4 ? 3 : sizeof(T) - 1))
/* Opaque structures */
uint8_t pad0; /**< Padding */
uint16_t sequence; /**< Sequence number */
uint32_t pad[7]; /**< Padding */
- uint32_t full_sequence;
+ uint32_t full_sequence; /**< full sequence */
} xcb_generic_event_t;
/**
uint8_t response_type; /**< Type of the response */
uint8_t error_code; /**< Error code */
uint16_t sequence; /**< Sequence number */
- uint32_t pad[7]; /**< Padding */
- uint32_t full_sequence;
+ uint32_t resource_id; /** < Resource ID for requests with side effects only */
+ uint16_t minor_code; /** < Minor opcode of the failed request */
+ uint8_t major_code; /** < Major opcode of the failed request */
+ uint8_t pad0;
+ uint32_t pad[5]; /**< Padding */
+ uint32_t full_sequence; /**< full sequence */
} xcb_generic_error_t;
/**
int xcb_flush(xcb_connection_t *c);
/**
- * @brief Returns the maximum request length field from the connection
- * setup data.
+ * @brief Returns the maximum request length that this server accepts.
* @param c: The connection to the X server.
* @return The maximum request length field.
*
*/
uint32_t xcb_get_maximum_request_length(xcb_connection_t *c);
+/**
+ * @brief Prefetch the maximum request length without blocking.
+ * @param c: The connection to the X server.
+ *
+ * Without blocking, does as much work as possible toward computing
+ * the maximum request length accepted by the X server.
+ *
+ * Invoking this function may cause a call to xcb_big_requests_enable,
+ * but will not block waiting for the reply.
+ * xcb_get_maximum_request_length will return the prefetched data
+ * after possibly blocking while the reply is retrieved.
+ *
+ * Note that in order for this function to be fully non-blocking, the
+ * application must previously have called
+ * xcb_prefetch_extension_data(c, &xcb_big_requests_id) and the reply
+ * must have already arrived.
+ */
+void xcb_prefetch_maximum_request_length(xcb_connection_t *c);
+
/* xcb_in.c */
/**
* @brief Returns the next event or error from the server.
* @param c: The connection to the X server.
- * @param error: A pointer to an int to be filled in with the I/O
- * error status of the operation.
* @return The next event from the server.
*
* Returns the next event or error from the server, if one is
* available, or returns @c NULL otherwise. If no event is available, that
* might be because an I/O error like connection close occurred while
- * attempting to read the next event. The @p error parameter is a
- * pointer to an int to be filled in with the I/O error status of the
- * operation. If @p error is @c NULL, terminates the application when an
- * I/O error occurs.
+ * attempting to read the next event, in which case the connection is
+ * shut down when this function returns.
+ */
+xcb_generic_event_t *xcb_poll_for_event(xcb_connection_t *c);
+
+/**
+ * @brief Returns the next event without reading from the connection.
+ * @param c: The connection to the X server.
+ * @return The next already queued event from the server.
+ *
+ * This is a version of xcb_poll_for_event that only examines the
+ * event queue for new events. The function doesn't try to read new
+ * events from the connection if no queued events are found.
+ *
+ * This function is useful for callers that know in advance that all
+ * interesting events have already been read from the connection. For
+ * example, callers might use xcb_wait_for_reply and be interested
+ * only of events that preceded a specific reply.
*/
-xcb_generic_event_t *xcb_poll_for_event(xcb_connection_t *c, int *error);
+xcb_generic_event_t *xcb_poll_for_queued_event(xcb_connection_t *c);
+
+typedef struct xcb_special_event xcb_special_event_t;
+
+/**
+ * @brief Returns the next event from a special queue
+ */
+xcb_generic_event_t *xcb_poll_for_special_event(xcb_connection_t *c,
+ xcb_special_event_t *se);
+
+/**
+ * @brief Returns the next event from a special queue, blocking until one arrives
+ */
+xcb_generic_event_t *xcb_wait_for_special_event(xcb_connection_t *c,
+ xcb_special_event_t *se);
+/**
+ * @typedef typedef struct xcb_extension_t xcb_extension_t
+ */
+typedef struct xcb_extension_t xcb_extension_t; /**< Opaque structure used as key for xcb_get_extension_data_t. */
+
+
+/**
+ * @brief Listen for a special event
+ */
+xcb_special_event_t *xcb_register_for_special_xge(xcb_connection_t *c,
+ xcb_extension_t *ext,
+ uint32_t eid,
+ uint32_t *stamp);
+
+/**
+ * @brief Stop listening for a special event
+ */
+void xcb_unregister_for_special_event(xcb_connection_t *c,
+ xcb_special_event_t *se);
/**
* @brief Return the error for a request, or NULL if none can ever arrive.
* @param cookie: The request cookie.
* @return The error for the request, or NULL if none can ever arrive.
*
- * The xcb_void_cookie_t cookie supplied to this function must have resulted from
- * a call to XCB[RequestName]Checked(). This function will block until one of
- * two conditions happens. If an error is received, it will be returned. If
- * a reply to a subsequent request has already arrived, no error can arrive
- * for this request, so this function will return NULL.
+ * The xcb_void_cookie_t cookie supplied to this function must have resulted
+ * from a call to xcb_[request_name]_checked(). This function will block
+ * until one of two conditions happens. If an error is received, it will be
+ * returned. If a reply to a subsequent request has already arrived, no error
+ * can arrive for this request, so this function will return NULL.
*
* Note that this function will perform a sync if needed to ensure that the
* sequence number will advance beyond that provided in cookie; this is a
*/
xcb_generic_error_t *xcb_request_check(xcb_connection_t *c, xcb_void_cookie_t cookie);
-
-/* xcb_ext.c */
-
/**
- * @typedef typedef struct xcb_extension_t xcb_extension_t
+ * @brief Discards the reply for a request.
+ * @param c: The connection to the X server.
+ * @param sequence: The request sequence number from a cookie.
+ *
+ * Discards the reply for a request. Additionally, any error generated
+ * by the request is also discarded (unless it was an _unchecked request
+ * and the error has already arrived).
+ *
+ * This function will not block even if the reply is not yet available.
+ *
+ * Note that the sequence really does have to come from an xcb cookie;
+ * this function is not designed to operate on socket-handoff replies.
*/
-typedef struct xcb_extension_t xcb_extension_t; /**< Opaque structure used as key for xcb_get_extension_data_t. */
+void xcb_discard_reply(xcb_connection_t *c, unsigned int sequence);
+
+
+/* xcb_ext.c */
/**
* @brief Caches reply information from QueryExtension requests.
* This function is the primary interface to the "extension cache",
* which caches reply information from QueryExtension
* requests. Invoking this function may cause a call to
- * xcb_query_extension_t to retrieve extension information from the
+ * xcb_query_extension to retrieve extension information from the
* server, and may block until extension data is received from the
* server.
*
*
* This function allows a "prefetch" of extension data into the
* extension cache. Invoking the function may cause a call to
- * xcb_query_extension_t, but will not block waiting for the
- * reply. xcb_get_extension_data_t will return the prefetched data after
+ * xcb_query_extension, but will not block waiting for the
+ * reply. xcb_get_extension_data will return the prefetched data after
* possibly blocking while it is retrieved.
*/
void xcb_prefetch_extension_data(xcb_connection_t *c, xcb_extension_t *ext);
* @return The file descriptor.
*
* Accessor for the file descriptor that was passed to the
- * xcb_connect_to_fd_t call that returned @p c.
+ * xcb_connect_to_fd call that returned @p c.
*/
int xcb_get_file_descriptor(xcb_connection_t *c);
/**
* @brief Test whether the connection has shut down due to a fatal error.
* @param c: The connection.
- * @return 1 if the connection is in an error state; 0 otherwise.
+ * @return > 0 if the connection is in an error state; 0 otherwise.
*
* Some errors that occur in the context of an xcb_connection_t
* are unrecoverable. When such an error occurs, the
* connection is shut down and further operations on the
* xcb_connection_t have no effect.
*
- * @todo Other functions should document the conditions in
- * which they shut down the connection.
+ * @return XCB_CONN_ERROR, because of socket errors, pipe errors or other stream errors.
+ * @return XCB_CONN_CLOSED_EXT_NOTSUPPORTED, when extension not supported.
+ * @return XCB_CONN_CLOSED_MEM_INSUFFICIENT, when memory not available.
+ * @return XCB_CONN_CLOSED_REQ_LEN_EXCEED, exceeding request length that server accepts.
+ * @return XCB_CONN_CLOSED_PARSE_ERR, error during parsing display string.
+ * @return XCB_CONN_CLOSED_INVALID_SCREEN, because the server does not have a screen matching the display.
*/
int xcb_connection_has_error(xcb_connection_t *c);
*
* Connects to an X server, given the open socket @p fd and the
* xcb_auth_info_t @p auth_info. The file descriptor @p fd is
- * bidirectionally connected to an X server. xcb_get_tcpfd_t and
- * xcb_get_unix_fd_t return appropriate file descriptors. If the connection
+ * bidirectionally connected to an X server. If the connection
* should be unauthenticated, @p auth_info must be @c
- * NULL. xcb_get_auth_info_t returns appropriate authentication data.
+ * NULL.
*/
xcb_connection_t *xcb_connect_to_fd(int fd, xcb_auth_info_t *auth_info);
/**
* @brief Parses a display string name in the form documented by X(7x).
- * @param displayname: The name of the display.
- * @param hostp: A pointer to a malloc'd copy of the hostname.
- * @param displayp: A pointer to the display number.
- * @param screenp: A pointer to the screen number.
+ * @param name: The name of the display.
+ * @param host: A pointer to a malloc'd copy of the hostname.
+ * @param display: A pointer to the display number.
+ * @param screen: A pointer to the screen number.
* @return 0 on failure, non 0 otherwise.
*
* Parses the display string name @p display_name in the form
/**
* @brief Connects to the X server, using an authorization information.
- * @param displayname: The name of the display.
+ * @param display: The name of the display.
* @param auth: The authorization information.
- * @param screenp: A pointer to a preferred screen number.
+ * @param screen: A pointer to a preferred screen number.
* @return A newly allocated xcb_connection_t structure.
*
* Connects to the X server specified by @p displayname, using the
xcb_connection_t *xcb_connect_to_display_with_auth_info(const char *display, xcb_auth_info_t *auth, int *screen);
+/* xcb_xid.c */
+
+/**
+ * @brief Allocates an XID for a new object.
+ * @param c: The connection.
+ * @return A newly allocated XID.
+ *
+ * Allocates an XID for a new object. Typically used just prior to
+ * various object creation functions, such as xcb_create_window.
+ */
+uint32_t xcb_generate_id(xcb_connection_t *c);
+
+
/**
* @}
*/
projects / free-sw / xcb / libxcb / blobdiff