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Add events to the watch list allocates memory. Add a cleanup function to
free all memory at cleanup time without having to remove all events
explicitly one by one.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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If a single file descriptor is being watch for multiple event types, it
will be present in multiple entries in the watch list. The
events_unwatch_fd() function will remove the first entry regardless of
its type, not allowing removal of a particular event type.
Fix this by extending the events_unwatch_fd() API to take an event type,
and remove the corresponding entry.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The omap3-isp-live project [1] includes a generic event handling library
that implements a select-based loop. Instead of reinventing the wheel,
import the library and use it.
The original license hasn't been modified, and includes both GPL-2.0+
and LGPL-2.1+ code. The sole copyright owner is Laurent Pinchart.
[1] git://git.ideasonboard.org/omap3-isp-live.git
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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