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win: merge win::pending_updates and win::flags 

These two flags are intended for subtly different things. I can probably
justify the distinction, but it's definitely difficult to explain. And
there is no obvious benefits to keep them separate.

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This commit is contained in:
Yuxuan Shui 2020-04-06 20:52:32 +01:00
parent df0be9e990
commit 32754b0262
No known key found for this signature in database
GPG Key ID: 37C999F617EA1A47
5 changed files with 79 additions and 90 deletions
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2
src/event.c
View File

@ -287,7 +287,7 @@ static inline void ev_map_notify(session_t *ps, xcb_map_notify_event_t *ev) {
return;
}
win_queue_update(w, WIN_UPDATE_MAP);
win_set_flags(w, WIN_FLAGS_MAPPED);
// FocusIn/Out may be ignored when the window is unmapped, so we must
// recheck focus here

23
src/picom.c
View File

@ -1309,12 +1309,6 @@ static void handle_new_windows(session_t *ps) {
}
static void refresh_windows(session_t *ps) {
win_stack_foreach_managed_safe(w, &ps->window_stack) {
win_process_updates(ps, w);
}
}
static void refresh_stale_images(session_t *ps) {
win_stack_foreach_managed(w, &ps->window_stack) {
win_process_flags(ps, w);
}
@ -1351,7 +1345,13 @@ static void handle_pending_updates(EV_P_ struct session *ps) {
// Call fill_win on new windows
handle_new_windows(ps);
// Process window updates
// Handle screen changes
// This HAS TO be called before refresh_windows, as handle_root_flags
// could call configure_root, which will release images and mark them
// stale.
handle_root_flags(ps);
// Process window flags
refresh_windows(ps);
{
@ -1363,15 +1363,6 @@ static void handle_pending_updates(EV_P_ struct session *ps) {
free(r);
}
// Handle screen changes
// This HAS TO be called before refresh_stale_images, as handle_root_flags
// could call configure_root, which will release images and mark them
// stale.
handle_root_flags(ps);
// Refresh pixmaps and shadows
refresh_stale_images(ps);
e = xcb_request_check(ps->c, xcb_ungrab_server_checked(ps->c));
if (e) {
log_fatal_x_error(e, "failed to ungrab x server");

121
src/win.c
View File

@ -46,9 +46,6 @@
// TODO Make more window states internal
struct managed_win_internal {
struct managed_win base;
/// A bit mask of unhandled window updates
uint_fast32_t pending_updates;
};
#define OPAQUE (0xffffffff)
@ -247,6 +244,7 @@ static inline void win_release_pixmap(backend_t *base, struct managed_win *w) {
if (w->win_image) {
base->ops->release_image(base, w->win_image);
w->win_image = NULL;
// Bypassing win_set_flags, because `w` might have been destroyed
w->flags |= WIN_FLAGS_PIXMAP_NONE;
}
}
@ -256,6 +254,7 @@ static inline void win_release_shadow(backend_t *base, struct managed_win *w) {
if (w->shadow_image) {
base->ops->release_image(base, w->shadow_image);
w->shadow_image = NULL;
// Bypassing win_set_flags, because `w` might have been destroyed
w->flags |= WIN_FLAGS_SHADOW_NONE;
}
}
@ -276,11 +275,11 @@ static inline bool win_bind_pixmap(struct backend_base *b, struct managed_win *w
b->ops->bind_pixmap(b, pixmap, x_get_visual_info(b->c, w->a.visual), true);
if (!w->win_image) {
log_error("Failed to bind pixmap");
w->flags |= WIN_FLAGS_IMAGE_ERROR;
win_set_flags(w, WIN_FLAGS_IMAGE_ERROR);
return false;
}
w->flags &= ~WIN_FLAGS_PIXMAP_NONE;
win_clear_flags(w, WIN_FLAGS_PIXMAP_NONE);
return true;
}
@ -294,13 +293,13 @@ bool win_bind_shadow(struct backend_base *b, struct managed_win *w, struct color
log_error("Failed to bind shadow image, shadow will be disabled for "
"%#010x (%s)",
w->base.id, w->name);
w->flags |= WIN_FLAGS_SHADOW_NONE;
win_set_flags(w, WIN_FLAGS_SHADOW_NONE);
w->shadow = false;
return false;
}
log_debug("New shadow for %#010x (%s)", w->base.id, w->name);
w->flags &= ~WIN_FLAGS_SHADOW_NONE;
win_clear_flags(w, WIN_FLAGS_SHADOW_NONE);
return true;
}
@ -310,40 +309,38 @@ void win_release_images(struct backend_base *backend, struct managed_win *w) {
// But if we are not releasing any images anyway, we don't care about the stale
// flags.
if ((w->flags & WIN_FLAGS_PIXMAP_NONE) == 0) {
assert((w->flags & WIN_FLAGS_PIXMAP_STALE) == 0);
if (!win_check_flags_all(w, WIN_FLAGS_PIXMAP_NONE)) {
assert(!win_check_flags_all(w, WIN_FLAGS_PIXMAP_STALE));
win_release_pixmap(backend, w);
}
if ((w->flags & WIN_FLAGS_SHADOW_NONE) == 0) {
assert((w->flags & WIN_FLAGS_SHADOW_STALE) == 0);
if (!win_check_flags_all(w, WIN_FLAGS_SHADOW_NONE)) {
assert(!win_check_flags_all(w, WIN_FLAGS_SHADOW_STALE));
win_release_shadow(backend, w);
}
}
void win_process_flags(session_t *ps, struct managed_win *w) {
// Make sure all pending window updates are processed before this. Making this
// assumption simplifies some checks (e.g. whether window is mapped)
assert(((struct managed_win_internal *)w)->pending_updates == 0);
if (!w->flags || (w->flags & WIN_FLAGS_IMAGE_ERROR) != 0) {
return;
if (win_check_flags_all(w, WIN_FLAGS_MAPPED)) {
map_win_start(ps, w);
}
win_clear_flags(w, WIN_FLAGS_MAPPED);
// Not a loop
while ((w->flags & WIN_FLAGS_IMAGES_STALE) != 0) {
while (win_check_flags_any(w, WIN_FLAGS_IMAGES_STALE) &&
!win_check_flags_all(w, WIN_FLAGS_IMAGE_ERROR)) {
// Image needs to be updated, update it.
if (!ps->backend_data) {
// We are using legacy backend, nothing to do here.
break;
}
if ((w->flags & WIN_FLAGS_PIXMAP_STALE) != 0) {
if (win_check_flags_all(w, WIN_FLAGS_PIXMAP_STALE)) {
// Check to make sure the window is still mapped, otherwise we
// won't be able to rebind pixmap after releasing it, yet we might
// still need the pixmap for rendering.
assert(w->state != WSTATE_UNMAPPING && w->state != WSTATE_DESTROYING);
if ((w->flags & WIN_FLAGS_PIXMAP_NONE) == 0) {
if (!win_check_flags_all(w, WIN_FLAGS_PIXMAP_NONE)) {
// Must release images first, otherwise breaks
// NVIDIA driver
win_release_pixmap(ps->backend_data, w);
@ -351,8 +348,8 @@ void win_process_flags(session_t *ps, struct managed_win *w) {
win_bind_pixmap(ps->backend_data, w);
}
if ((w->flags & WIN_FLAGS_SHADOW_STALE) != 0) {
if ((w->flags & WIN_FLAGS_SHADOW_NONE) == 0) {
if (win_check_flags_all(w, WIN_FLAGS_SHADOW_STALE)) {
if (!win_check_flags_all(w, WIN_FLAGS_SHADOW_NONE)) {
win_release_shadow(ps->backend_data, w);
}
if (w->shadow) {
@ -370,7 +367,7 @@ void win_process_flags(session_t *ps, struct managed_win *w) {
}
// Clear stale image flags
w->flags &= ~WIN_FLAGS_IMAGES_STALE;
win_clear_flags(w, WIN_FLAGS_IMAGES_STALE);
}
/**
@ -694,7 +691,7 @@ static void win_set_shadow(session_t *ps, struct managed_win *w, bool shadow_new
w->shadow = shadow_new;
assert(!w->shadow_image);
assert(!w->win_image);
assert(w->flags & WIN_FLAGS_IMAGES_NONE);
assert(win_check_flags_all(w, WIN_FLAGS_IMAGES_NONE));
return;
}
@ -720,14 +717,14 @@ static void win_set_shadow(session_t *ps, struct managed_win *w, bool shadow_new
// asserting the existence of the shadow image.
if (w->shadow) {
// Mark the new extents as damaged if the shadow is added
assert(!w->shadow_image || (w->flags & WIN_FLAGS_SHADOW_STALE) ||
assert(!w->shadow_image || win_check_flags_all(w, WIN_FLAGS_SHADOW_STALE) ||
!ps->o.experimental_backends);
pixman_region32_clear(&extents);
win_extents(w, &extents);
add_damage_from_win(ps, w);
} else {
// Mark the old extents as damaged if the shadow is removed
assert(w->shadow_image || (w->flags & WIN_FLAGS_SHADOW_STALE) ||
assert(w->shadow_image || win_check_flags_all(w, WIN_FLAGS_SHADOW_STALE) ||
!ps->o.experimental_backends);
add_damage(ps, &extents);
}
@ -737,7 +734,7 @@ static void win_set_shadow(session_t *ps, struct managed_win *w, bool shadow_new
// Delayed update of shadow image
// By setting WIN_FLAGS_SHADOW_STALE, we ask win_process_flags to re-create or
// release the shaodw in based on whether w->shadow is set.
w->flags |= WIN_FLAGS_SHADOW_STALE;
win_set_flags(w, WIN_FLAGS_SHADOW_STALE);
ps->pending_updates = true;
}
@ -945,7 +942,7 @@ void win_on_win_size_change(session_t *ps, struct managed_win *w) {
// Invalidate the shadow we built
if (w->state == WSTATE_MAPPED || w->state == WSTATE_MAPPING ||
w->state == WSTATE_FADING) {
w->flags |= WIN_FLAGS_IMAGES_STALE;
win_set_flags(w, WIN_FLAGS_IMAGES_STALE);
ps->pending_updates = true;
} else {
assert(w->state == WSTATE_UNMAPPED);
@ -1301,7 +1298,6 @@ struct win *fill_win(session_t *ps, struct win *w) {
// Allocate and initialize the new win structure
auto new_internal = cmalloc(struct managed_win_internal);
auto new = (struct managed_win *)new_internal;
new_internal->pending_updates = 0;
// Fill structure
// We only need to initialize the part that are not initialized
@ -1599,7 +1595,7 @@ void win_update_bounding_shape(session_t *ps, struct managed_win *w) {
// Note we only do this when screen is redirected, because
// otherwise win_data is not valid
assert(w->state != WSTATE_UNMAPPING && w->state != WSTATE_DESTROYING);
w->flags |= WIN_FLAGS_IMAGES_STALE;
win_set_flags(w, WIN_FLAGS_IMAGES_STALE);
ps->pending_updates = true;
}
free_paint(ps, &w->paint);
@ -1713,7 +1709,7 @@ static void unmap_win_finish(session_t *ps, struct managed_win *w) {
free_paint(ps, &w->shadow_paint);
// Try again at binding images when the window is mapped next time
w->flags &= ~WIN_FLAGS_IMAGE_ERROR;
win_clear_flags(w, WIN_FLAGS_IMAGE_ERROR);
}
/// Finish the destruction of a window (e.g. after fading has finished).
@ -1886,14 +1882,15 @@ bool destroy_win_start(session_t *ps, struct win *w) {
}
if (w->managed) {
// Clear PIXMAP_STALE flag, since the window is destroyed there is no
// pixmap available so STALE doesn't make sense.
// Do this before changing the window state to destroying
win_clear_flags(mw, WIN_FLAGS_PIXMAP_STALE);
// Update state flags of a managed window
mw->state = WSTATE_DESTROYING;
mw->a.map_state = XCB_MAP_STATE_UNMAPPED;
mw->in_openclose = true;
// Clear PIXMAP_STALE flag, since the window is destroyed there is no
// pixmap available so STALE doesn't make sense.
mw->flags &= ~WIN_FLAGS_PIXMAP_STALE;
}
// don't need win_ev_stop because the window is gone anyway
@ -1913,7 +1910,6 @@ bool destroy_win_start(session_t *ps, struct win *w) {
}
void unmap_win_start(session_t *ps, struct managed_win *w) {
auto internal_w = (struct managed_win_internal *)w;
assert(w);
assert(w->base.managed);
assert(w->a._class != XCB_WINDOW_CLASS_INPUT_ONLY);
@ -1926,8 +1922,9 @@ void unmap_win_start(session_t *ps, struct managed_win *w) {
}
if (unlikely(w->state == WSTATE_UNMAPPING || w->state == WSTATE_UNMAPPED)) {
if (internal_w->pending_updates & WIN_UPDATE_MAP) {
internal_w->pending_updates &= ~(unsigned long)WIN_UPDATE_MAP;
if (win_check_flags_all(w, WIN_FLAGS_MAPPED)) {
// Clear the pending map as this window is now unmapped
win_clear_flags(w, WIN_FLAGS_MAPPED);
} else {
log_warn("Trying to unmapping an already unmapped window %#010x "
"\"%s\"",
@ -1946,7 +1943,7 @@ void unmap_win_start(session_t *ps, struct managed_win *w) {
// Clear PIXMAP_STALE flag, since the window is unmapped there is no pixmap
// available so STALE doesn't make sense.
w->flags &= ~WIN_FLAGS_PIXMAP_STALE;
win_clear_flags(w, WIN_FLAGS_PIXMAP_STALE);
// don't care about properties anymore
win_ev_stop(ps, &w->base);
@ -2053,8 +2050,7 @@ void map_win_start(session_t *ps, struct managed_win *w) {
}
assert(w->state == WSTATE_UNMAPPED);
assert((w->flags & WIN_FLAGS_IMAGES_NONE) == WIN_FLAGS_IMAGES_NONE ||
!ps->o.experimental_backends);
assert(win_check_flags_all(w, WIN_FLAGS_IMAGES_NONE) || !ps->o.experimental_backends);
// We stopped processing window size change when we were unmapped, refresh the
// size of the window
@ -2148,7 +2144,7 @@ void map_win_start(session_t *ps, struct managed_win *w) {
// the window's image will be bound
win_update_bounding_shape(ps, w);
assert((w->flags & WIN_FLAGS_IMAGES_STALE) == WIN_FLAGS_IMAGES_STALE);
assert(win_check_flags_all(w, WIN_FLAGS_IMAGES_STALE));
#ifdef CONFIG_DBUS
// Send D-Bus signal
@ -2284,31 +2280,33 @@ win_is_fullscreen_xcb(xcb_connection_t *c, const struct atom *a, const xcb_windo
return false;
}
/// Queue an update on a window. A series of sanity checks are performed
void win_queue_update(struct managed_win *_w, enum win_update update) {
auto w = (struct managed_win_internal *)_w;
assert(popcount(update) == 1);
assert(update == WIN_UPDATE_MAP); // Currently the only supported update
if (unlikely(_w->state == WSTATE_DESTROYING)) {
log_error("Updates queued on a destroyed window %#010x (%s)", _w->base.id,
_w->name);
/// Set flags on a window. Some sanity checks are performed
void win_set_flags(struct managed_win *w, uint64_t flags) {
if (unlikely(w->state == WSTATE_DESTROYING)) {
log_error("Flags set on a destroyed window %#010x (%s)", w->base.id, w->name);
return;
}
w->pending_updates |= update;
w->flags |= flags;
}
/// Process pending updates on a window. Has to be called in X critical section
void win_process_updates(struct session *ps, struct managed_win *_w) {
assert(ps->server_grabbed);
auto w = (struct managed_win_internal *)_w;
if (w->pending_updates & WIN_UPDATE_MAP) {
map_win_start(ps, _w);
/// Clear flags on a window. Some sanity checks are performed
void win_clear_flags(struct managed_win *w, uint64_t flags) {
if (unlikely(w->state == WSTATE_DESTROYING)) {
log_error("Flags cleared on a destroyed window %#010x (%s)", w->base.id,
w->name);
return;
}
w->pending_updates = 0;
w->flags = w->flags & (~flags);
}
bool win_check_flags_any(struct managed_win *w, uint64_t flags) {
return (w->flags & flags) != 0;
}
bool win_check_flags_all(struct managed_win *w, uint64_t flags) {
return (w->flags & flags) == flags;
}
/**
@ -2364,7 +2362,6 @@ win_stack_find_next_managed(const session_t *ps, const struct list_node *i) {
/// Return whether this window is mapped on the X server side
bool win_is_mapped_in_x(const struct managed_win *w) {
auto iw = (const struct managed_win_internal *)w;
return w->state == WSTATE_MAPPING || w->state == WSTATE_FADING ||
w->state == WSTATE_MAPPED || (iw->pending_updates & WIN_UPDATE_MAP);
w->state == WSTATE_MAPPED || (w->flags & WIN_FLAGS_MAPPED);
}

14
src/win.h
View File

@ -131,7 +131,7 @@ struct managed_win {
/// See above about coordinate systems.
region_t bounding_shape;
/// Window flags. Definitions above.
int_fast16_t flags;
uint64_t flags;
/// The region of screen that will be obscured when windows above is painted,
/// in global coordinates.
/// We use this to reduce the pixels that needed to be paint when painting
@ -252,12 +252,8 @@ struct managed_win {
#endif
};
/// Process pending updates on a window. Has to be called in X critical section
void win_process_updates(struct session *ps, struct managed_win *_w);
/// Process pending images flags on a window. Has to be called in X critical section
void win_process_flags(session_t *ps, struct managed_win *w);
/// Queue an update on a window. A series of sanity checks are performed
void win_queue_update(struct managed_win *_w, enum win_update update);
/// Bind a shadow to the window, with color `c` and shadow kernel `kernel`
bool win_bind_shadow(struct backend_base *b, struct managed_win *w, struct color c,
struct conv *kernel);
@ -434,6 +430,14 @@ bool win_is_mapped_in_x(const struct managed_win *w);
// Find the managed window immediately below `w` in the window stack
struct managed_win *attr_pure win_stack_find_next_managed(const session_t *ps,
const struct list_node *w);
/// Set flags on a window. Some sanity checks are performed
void win_set_flags(struct managed_win *w, uint64_t flags);
/// Clear flags on a window. Some sanity checks are performed
void win_clear_flags(struct managed_win *w, uint64_t flags);
/// Returns true if any of the flags in `flags` is set
bool win_check_flags_any(struct managed_win *w, uint64_t flags);
/// Returns true if all of the flags in `flags` are set
bool win_check_flags_all(struct managed_win *w, uint64_t flags);
/// Free all resources in a struct win
void free_win_res(session_t *ps, struct managed_win *w);

9
src/win_defs.h
View File

@ -27,11 +27,6 @@ typedef enum {
WMODE_SOLID, // The window is opaque including the frame
} winmode_t;
/// Pending window updates
enum win_update {
WIN_UPDATE_MAP = 1,
};
/// Transition table:
/// (DESTROYED is when the win struct is destroyed and freed)
/// ('o' means in all other cases)
@ -86,9 +81,11 @@ enum win_flags {
WIN_FLAGS_SHADOW_STALE = 8,
/// shadow has not been generated
WIN_FLAGS_SHADOW_NONE = 16,
/// the window is mapped by X, we need to call map_win_start for it
WIN_FLAGS_MAPPED = 64,
};
static const int_fast16_t WIN_FLAGS_IMAGES_STALE =
static const uint64_t WIN_FLAGS_IMAGES_STALE =
WIN_FLAGS_PIXMAP_STALE | WIN_FLAGS_SHADOW_STALE;
#define WIN_FLAGS_IMAGES_NONE (WIN_FLAGS_PIXMAP_NONE | WIN_FLAGS_SHADOW_NONE)