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7d52b4d0b5
Our internal state machine gets screwed up if selection events are not monotonically increasing in time, and we can enter a self-copy loop from the proxy window that exhausts all pipes. Snippet of logs when this occurs: 00:00:46.238 [wlr] [xwayland/selection/incoming.c:487] XCB_XFIXES_SELECTION_NOTIFY (selection=277, owner=4194626) 00:00:46.238 [wlr] [xwayland/selection/incoming.c:487] XCB_XFIXES_SELECTION_NOTIFY (selection=277, owner=2097153) 00:00:46.238 [wlr] [xwayland/selection/outgoing.c:378] XCB_SELECTION_REQUEST (time=58979563 owner=2097153, requestor=2097153 selection=277, target=279, property=278) 00:00:46.238 [wlr] [xwayland/selection/outgoing.c:397] ignoring old request from timestamp 58979563; expecting > 58979563 00:00:46.238 [wlr] [xwayland/selection/outgoing.c:29] SendEvent destination=2097153 SelectionNotify(31) time=58979563 requestor=2097153 selection=277 target=279 property=0 00:00:46.238 [wlr] [xwayland/selection/incoming.c:453] XCB_SELECTION_NOTIFY (selection=277, property=0, target=279) Note that 2097153 is `selection->window`, and 4194626 is Emacs. The race occurs if the selection owner changes back to our proxy window between when we get `XCB_XFIXES_SELECTION_NOTIFY` for Emacs and when we call `xcb_convert_selection` in `incoming.c:source_send` -- the ConvertSelection request can end up hitting our proxy window, but the timestamp will be rejected. Fixes #2192. |
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| .. | ||
| selection | ||
| meson.build | ||
| server.c | ||
| sockets.c | ||
| sockets.h | ||
| xwayland.c | ||
| xwm.c | ||