c3ef36d6b5
Commit 4b8e3a885b makes it so only one
transaction is committed (ie. configures sent) at a time. This commit
removes the now-unnecessary code which was used to support concurrent
committed transactions.
* Instead of containers storing a list of instructions which they've
been sent, it now stores a single instruction.
* Containers now have an ntxnrefs property. Previously we knew how many
references there were by the length of the instruction list.
* Instructions no longer need a ready property. It was used to avoid
marking an instruction ready twice when they were in a list, but this is
now avoided because there is only one instruction and we nullify the
container->instruction pointer when it's ready.
* When a transaction applies, we no longer need to consider releasing
and resaving the surface, as we know there are no other committed
transactions.
* transaction_notify_view_ready has been renamed to
view_notify_view_ready_by_serial to make it consistent with
transaction_notify_view_ready_by_size.
* Out-of-memory checks have been added when creating transactions and
instructions.
49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
#ifndef _SWAY_TRANSACTION_H
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#define _SWAY_TRANSACTION_H
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#include <wlr/render/wlr_texture.h>
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#include "sway/tree/container.h"
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/**
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* Transactions enable us to perform atomic layout updates.
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*
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* A transaction contains a list of containers and their new state.
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* A state might contain a new size, or new border settings, or new parent/child
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* relationships.
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*
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* Committing a transaction makes sway notify of all the affected clients with
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* their new sizes. We then wait for all the views to respond with their new
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* surface sizes. When all are ready, or when a timeout has passed, we apply the
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* updates all at the same time.
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*
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* When we want to make adjustments to the layout, we change the pending state
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* in containers, mark them as dirty and call transaction_commit_dirty(). This
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* create and commits a transaction from the dirty containers.
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*/
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struct sway_transaction_instruction;
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/**
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* Find all dirty containers, create and commit a transaction containing them,
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* and unmark them as dirty.
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*/
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void transaction_commit_dirty(void);
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/**
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* Notify the transaction system that a view is ready for the new layout.
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*
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* When all views in the transaction are ready, the layout will be applied.
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*/
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void transaction_notify_view_ready_by_serial(struct sway_view *view,
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uint32_t serial);
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/**
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* Notify the transaction system that a view is ready for the new layout, but
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* identifying the instruction by width and height rather than by serial.
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*
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* This is used by xwayland views, as they don't have serials.
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*/
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void transaction_notify_view_ready_by_size(struct sway_view *view,
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int width, int height);
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#endif
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