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We want to avoid any static files that are shared between multiple
programs but are not part of SHL. These make the build-process just more
complex.
Move log.[ch] to SHL so we have a known context.
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
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Internally, we already support immediate buffer-swaps but this hasn't been
exported in the API. This patch adds an "immediate" argument that causes
the flip to be immediate and not synchronized with vertical-blanks.
Please note that this might block if there is a pending page-flip.
However, this is mostly a delay of 16ms so we can ignore it as this is
acceptable if you want immediate swaps while there is still a
pending-buffer.
You can listen for the UTERM_PAGE_FLIP event if you don't want this
behavior.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
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We use structures to pass information in all callbacks so we always get 3
arguments: parent, parameters, data
Also change the return type to int so we can catch errors when changing
session stati.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
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The dummy session is a very simply session implementation that simply
draws a black background. It will be used by each seat as fallback if no
other session is available. If we didn't do that, we wouldn't be able to
guarantee that the screen is cleared after a session is unregistered.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
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