FreeBSD Manual Pages
xcb_shm_create_segment(3) XCB Requests xcb_shm_create_segment(3) NAME xcb_shm_create_segment - Asks the server to allocate a shared memory seg- ment. SYNOPSIS #include <xcb/shm.h> Request function xcb_shm_create_segment_cookie_t xcb_shm_create_segment(xcb_connec- tion_t *conn, xcb_shm_seg_t shmseg, uint32_t size, uint8_t read_only); Reply datastructure typedef struct xcb_shm_create_segment_reply_t { uint8_t response_type; uint8_t nfd; uint16_t sequence; uint32_t length; uint8_t pad0[24]; } xcb_shm_create_segment_reply_t; Reply function xcb_shm_create_segment_reply_t *xcb_shm_create_segment_reply(xcb_connec- tion_t *conn, xcb_shm_create_segment_cookie_t cookie, xcb_generic_error_t **e); REQUEST ARGUMENTS conn The XCB connection to X11. shmseg A shared memory segment ID created with xcb_generate_id(). size The size of the segment to create. read_only True if the server should map the segment read-only; otherwise false. REPLY FIELDS response_type The type of this reply, in this case XCB_SHM_CREATE_SEGMENT. 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). nfd The number of file descriptors sent by the server. Will always be 1. shm_fd TODO: NOT YET DOCUMENTED. DESCRIPTION Asks the server to allocate a shared memory segment. The serveras reply will include a file descriptor for the client to pass to mmap(). RETURN VALUE Returns an xcb_shm_create_segment_cookie_t. Errors have to be handled when calling the reply function xcb_shm_create_segment_reply. If you want to handle errors in the event loop instead, use xcb_shm_cre- ate_segment_unchecked. See xcb-requests(3) for details. ERRORS This request does never generate any errors. SEE ALSO xcb-requests(3) AUTHOR Generated from shm.xml. Contact xcb@lists.freedesktop.org for corrections and improvements. X Version 11 libxcb 1.17.0 xcb_shm_create_segment(3)
NAME | SYNOPSIS | REQUEST ARGUMENTS | REPLY FIELDS | DESCRIPTION | RETURN VALUE | ERRORS | SEE ALSO | AUTHOR
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=xcb_shm_create_segment&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>