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xcb_sync_query_fence(3) XCB Requests xcb_sync_query_fence(3)
NAME
xcb_sync_query_fence -
SYNOPSIS
#include <xcb/sync.h>
Request function
xcb_sync_query_fence_cookie_t
xcb_sync_query_fence(xcb_connection_t *conn,
xcb_sync_fence_t fence);
Reply datastructure
typedef struct xcb_sync_query_fence_reply_t {
uint8_t response_type;
uint8_t pad0;
uint16_t sequence;
uint32_t length;
uint8_t triggered;
uint8_t pad1[23];
} xcb_sync_query_fence_reply_t;
Reply function
xcb_sync_query_fence_reply_t
*xcb_sync_query_fence_reply(xcb_connection_t *conn,
xcb_sync_query_fence_cookie_t cookie, xcb_generic_error_t **e);
REQUEST ARGUMENTS
conn The XCB connection to X11.
fence TODO: NOT YET DOCUMENTED.
REPLY FIELDS
response_type
The type of this reply, in this case XCB_SYNC_QUERY_FENCE.
This field is also present in the xcb_generic_reply_t and can
be used to tell replies apart from each other.
sequence The sequence number of the last request processed by the X11
server.
length The length of the reply, in words (a word is 4 bytes).
triggered TODO: NOT YET DOCUMENTED.
DESCRIPTION
RETURN VALUE
Returns an xcb_sync_query_fence_cookie_t. Errors have to be handled
when calling the reply function xcb_sync_query_fence_reply.
If you want to handle errors in the event loop instead, use
xcb_sync_query_fence_unchecked. See xcb-requests(3) for details.
ERRORS
This request does never generate any errors.
SEE ALSO