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Merge pull request #2458 from RyanDwyer/cleanup-transactions

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Simplify transactions
master
Drew DeVault 6 years ago committed by GitHub
parent 647ace1d6d c3ef36d6b5
commit 98ed05225e
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 51 additions and 80 deletions
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5
include/sway/desktop/transaction.h
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@ -20,6 +20,8 @@
* create and commits a transaction from the dirty containers.
*/
struct sway_transaction_instruction;
/**
* Find all dirty containers, create and commit a transaction containing them,
* and unmark them as dirty.
@ -31,7 +33,8 @@ void transaction_commit_dirty(void);
*
* When all views in the transaction are ready, the layout will be applied.
*/
void transaction_notify_view_ready(struct sway_view *view, uint32_t serial);
void transaction_notify_view_ready_by_serial(struct sway_view *view,
uint32_t serial);
/**
* Notify the transaction system that a view is ready for the new layout, but

7
include/sway/tree/container.h
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@ -151,7 +151,12 @@ struct sway_container {
struct wlr_texture *title_urgent;
size_t title_height;
list_t *instructions; // struct sway_transaction_instruction *
// The number of transactions which reference this container.
size_t ntxnrefs;
// If this container is a view and is waiting for the client to respond to a
// configure then this will be populated, otherwise NULL.
struct sway_transaction_instruction *instruction;
bool destroying;

99
sway/desktop/transaction.c
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@ -43,12 +43,14 @@ struct sway_transaction_instruction {
struct sway_container *container;
struct sway_container_state state;
uint32_t serial;
bool ready;
};
static struct sway_transaction *transaction_create() {
struct sway_transaction *transaction =
calloc(1, sizeof(struct sway_transaction));
if (!sway_assert(transaction, "Unable to allocate transaction")) {
return NULL;
}
transaction->instructions = create_list();
if (server.debug_txn_timings) {
clock_gettime(CLOCK_MONOTONIC, &transaction->create_time);
@ -62,13 +64,11 @@ static void transaction_destroy(struct sway_transaction *transaction) {
struct sway_transaction_instruction *instruction =
transaction->instructions->items[i];
struct sway_container *con = instruction->container;
for (int j = 0; j < con->instructions->length; ++j) {
if (con->instructions->items[j] == instruction) {
list_del(con->instructions, j);
break;
}
con->ntxnrefs--;
if (con->instruction == instruction) {
con->instruction = NULL;
}
if (con->destroying && !con->instructions->length) {
if (con->destroying && con->ntxnrefs == 0) {
container_free(con);
}
free(instruction);
@ -130,12 +130,16 @@ static void transaction_add_container(struct sway_transaction *transaction,
struct sway_container *container) {
struct sway_transaction_instruction *instruction =
calloc(1, sizeof(struct sway_transaction_instruction));
if (!sway_assert(instruction, "Unable to allocate instruction")) {
return;
}
instruction->transaction = transaction;
instruction->container = container;
copy_pending_state(container, &instruction->state);
list_add(transaction->instructions, instruction);
container->ntxnrefs++;
}
/**
@ -195,21 +199,11 @@ static void transaction_apply(struct sway_transaction *transaction) {
memcpy(&container->current, &instruction->state,
sizeof(struct sway_container_state));
if (container->type == C_VIEW) {
if (container->destroying) {
if (container->instructions->length == 1 &&
container->sway_view->saved_buffer) {
view_remove_saved_buffer(container->sway_view);
}
} else {
if (container->sway_view->saved_buffer) {
view_remove_saved_buffer(container->sway_view);
}
if (container->instructions->length > 1) {
view_save_buffer(container->sway_view);
}
}
if (container->type == C_VIEW && container->sway_view->saved_buffer) {
view_remove_saved_buffer(container->sway_view);
}
container->instruction = NULL;
}
}
@ -269,20 +263,8 @@ static bool should_configure(struct sway_container *con,
if (con->destroying) {
return false;
}
// The settled dimensions are what size the view will be once any pending
// configures have applied (excluding the one we might be configuring now).
// If these match the dimensions that this transaction wants then we don't
// need to configure it.
int settled_width = con->current.view_width;
int settled_height = con->current.view_height;
if (con->instructions->length) {
struct sway_transaction_instruction *last_instruction =
con->instructions->items[con->instructions->length - 1];
settled_width = last_instruction->state.view_width;
settled_height = last_instruction->state.view_height;
}
if (settled_width == instruction->state.view_width &&
settled_height == instruction->state.view_height) {
if (con->current.view_width == instruction->state.view_width &&
con->current.view_height == instruction->state.view_height) {
return false;
}
return true;
@ -312,10 +294,10 @@ static void transaction_commit(struct sway_transaction *transaction) {
struct timespec when;
wlr_surface_send_frame_done(con->sway_view->surface, &when);
}
if (con->type == C_VIEW && !con->sway_view->saved_buffer) {
if (con->type == C_VIEW) {
view_save_buffer(con->sway_view);
}
list_add(con->instructions, instruction);
con->instruction = instruction;
}
transaction->num_configures = transaction->num_waiting;
if (server.debug_txn_timings) {
@ -347,7 +329,6 @@ static void transaction_commit(struct sway_transaction *transaction) {
static void set_instruction_ready(
struct sway_transaction_instruction *instruction) {
instruction->ready = true;
struct sway_transaction *transaction = instruction->transaction;
if (server.debug_txn_timings) {
@ -371,44 +352,25 @@ static void set_instruction_ready(
wl_event_source_timer_update(transaction->timer, 0);
}
}
}
/**
* Mark all of the view's instructions as ready up to and including the
* instruction at the given index. This allows the view to skip a configure.
*/
static void set_instructions_ready(struct sway_view *view, int index) {
for (int i = 0; i <= index; ++i) {
struct sway_transaction_instruction *instruction =
view->swayc->instructions->items[i];
if (!instruction->ready) {
set_instruction_ready(instruction);
}
}
instruction->container->instruction = NULL;
transaction_progress_queue();
}
void transaction_notify_view_ready(struct sway_view *view, uint32_t serial) {
for (int i = 0; i < view->swayc->instructions->length; ++i) {
struct sway_transaction_instruction *instruction =
view->swayc->instructions->items[i];
if (instruction->serial == serial && !instruction->ready) {
set_instructions_ready(view, i);
return;
}
void transaction_notify_view_ready_by_serial(struct sway_view *view,
uint32_t serial) {
struct sway_transaction_instruction *instruction = view->swayc->instruction;
if (view->swayc->instruction->serial == serial) {
set_instruction_ready(instruction);
}
}
void transaction_notify_view_ready_by_size(struct sway_view *view,
int width, int height) {
for (int i = 0; i < view->swayc->instructions->length; ++i) {
struct sway_transaction_instruction *instruction =
view->swayc->instructions->items[i];
if (!instruction->ready && instruction->state.view_width == width &&
instruction->state.view_height == height) {
set_instructions_ready(view, i);
return;
}
struct sway_transaction_instruction *instruction = view->swayc->instruction;
if (instruction->state.view_width == width &&
instruction->state.view_height == height) {
set_instruction_ready(instruction);
}
}
@ -417,6 +379,9 @@ void transaction_commit_dirty(void) {
return;
}
struct sway_transaction *transaction = transaction_create();
if (!transaction) {
return;
}
for (int i = 0; i < server.dirty_containers->length; ++i) {
struct sway_container *container = server.dirty_containers->items[i];
transaction_add_container(transaction, container);

5
sway/desktop/xdg_shell.c
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@ -254,8 +254,9 @@ static void handle_commit(struct wl_listener *listener, void *data) {
return;
}
if (view->swayc->instructions->length) {
transaction_notify_view_ready(view, xdg_surface->configure_serial);
if (view->swayc->instruction) {
transaction_notify_view_ready_by_serial(view,
xdg_surface->configure_serial);
}
view_damage_from(view);

5
sway/desktop/xdg_shell_v6.c
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@ -250,8 +250,9 @@ static void handle_commit(struct wl_listener *listener, void *data) {
if (!view->swayc) {
return;
}
if (view->swayc->instructions->length) {
transaction_notify_view_ready(view, xdg_surface_v6->configure_serial);
if (view->swayc->instruction) {
transaction_notify_view_ready_by_serial(view,
xdg_surface_v6->configure_serial);
}
view_damage_from(view);

2
sway/desktop/xwayland.c
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@ -284,7 +284,7 @@ static void handle_commit(struct wl_listener *listener, void *data) {
struct wlr_xwayland_surface *xsurface = view->wlr_xwayland_surface;
struct wlr_surface_state *surface_state = &xsurface->surface->current;
if (view->swayc->instructions->length) {
if (view->swayc->instruction) {
transaction_notify_view_ready_by_size(view,
surface_state->width, surface_state->height);
} else if (container_is_floating(view->swayc)) {

6
sway/tree/container.c
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@ -108,7 +108,6 @@ struct sway_container *container_create(enum sway_container_type type) {
c->layout = L_NONE;
c->type = type;
c->alpha = 1.0f;
c->instructions = create_list();
if (type != C_VIEW) {
c->children = create_list();
@ -140,8 +139,8 @@ void container_free(struct sway_container *cont) {
"Tried to free container which wasn't marked as destroying")) {
return;
}
if (!sway_assert(cont->instructions->length == 0,
"Tried to free container with pending instructions")) {
if (!sway_assert(cont->ntxnrefs == 0, "Tried to free container "
"which is still referenced by transactions")) {
return;
}
free(cont->name);
@ -150,7 +149,6 @@ void container_free(struct sway_container *cont) {
wlr_texture_destroy(cont->title_focused_inactive);
wlr_texture_destroy(cont->title_unfocused);
wlr_texture_destroy(cont->title_urgent);
list_free(cont->instructions);
list_free(cont->children);
list_free(cont->current.children);

2
sway/tree/root.c
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@ -26,7 +26,6 @@ void root_create(void) {
root_container.type = C_ROOT;
root_container.layout = L_NONE;
root_container.name = strdup("root");
root_container.instructions = create_list();
root_container.children = create_list();
root_container.current.children = create_list();
wl_signal_init(&root_container.events.destroy);
@ -55,7 +54,6 @@ void root_destroy(void) {
free(root_container.sway_root);
// root_container
list_free(root_container.instructions);
list_free(root_container.children);
list_free(root_container.current.children);
free(root_container.name);

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