xcb_shm_attach3
Attach a system v shared memory segment.
Usage
#include <xcb/shm.h>
Request function
xcb_void_cookie_t xcb_shm_attach(xcb_connection_t *conn, xcb_shm_seg_t shmseg, uint32_t shmid, uint8_t read_only);
Request arguments
- conn
-
The XCB connection to X11.
- shmseg
-
A shared memory segment ID created with xcb_generate_id().
- shmid
-
The System V shared memory segment the server should map.
- read_only
-
True if the segment shall be mapped read only by the X11 server, otherwise false.
Overview
Attach a System V shared memory segment to the server. This will fail unless the server has permission to map the segment. The client may destroy the segment as soon as it receives a XCB_SHM_COMPLETION event with the shmseg value in this request and with the appropriate serial number.
Return value
Returns an xcb_void_cookie_t. Errors (if any) have to be handled in the event loop.
If you want to handle errors directly with xcb_request_check instead, use xcb_shm_attach_checked. See xcb-requests(3) for details.
Errors
This request does never generate any errors.
Releases
6 releases since Debian 9 (Stretch); the text changed 4 times.