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stack: Add some trace instrumentation

Browse Source 
The stack and stack tracker tend to cause missed frames from time to
time, especially when there are many open windows. Add some
instrumentation to make it this easily verifiable when profiling.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1616>
This commit is contained in:
Jonas Ådahl
2020-11-30 12:06:16 +01:00
committed by Marge Bot
parent c56433d6ee
commit 48a90e3a86
2 changed files with 20 additions and 0 deletions
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16
src/core/stack-tracker.c
View File

@ -1185,9 +1185,13 @@ meta_stack_tracker_restack_managed (MetaStackTracker *tracker,
int n_windows;
int old_pos, new_pos;
COGL_TRACE_BEGIN_SCOPED (StackTrackerRestackManaged,
"StackTracker: Restack Managed");
if (n_managed == 0)
return;
COGL_TRACE_BEGIN (StackTrackerRestackManagedGet,
"StackTracker: Restack Managed (get)");
meta_stack_tracker_get_stack (tracker, &windows, &n_windows);
/* If the top window has to be restacked, we don't want to move it to the very
@ -1204,7 +1208,10 @@ meta_stack_tracker_restack_managed (MetaStackTracker *tracker,
break;
}
g_assert (old_pos >= 0);
COGL_TRACE_END (StackTrackerRestackManagedGet);
COGL_TRACE_BEGIN (StackTrackerRestackManagedRaise,
"StackTracker: Restack Managed (raise)");
new_pos = n_managed - 1;
if (managed[new_pos] != windows[old_pos])
{
@ -1213,10 +1220,13 @@ meta_stack_tracker_restack_managed (MetaStackTracker *tracker,
meta_stack_tracker_get_stack (tracker, &windows, &n_windows);
/* Moving managed[new_pos] above windows[old_pos], moves the window at old_pos down by one */
}
COGL_TRACE_END (StackTrackerRestackManagedRaise);
old_pos--;
new_pos--;
COGL_TRACE_BEGIN (StackTrackerRestackManagedRestack,
"StackTracker: Restack Managed (restack)");
while (old_pos >= 0 && new_pos >= 0)
{
if (meta_stack_tracker_is_guard_window (tracker, windows[old_pos]))
@ -1243,12 +1253,16 @@ meta_stack_tracker_restack_managed (MetaStackTracker *tracker,
old_pos--;
new_pos--;
}
COGL_TRACE_END (StackTrackerRestackManagedRestack);
COGL_TRACE_BEGIN (StackTrackerRestackManagedLower,
"StackTracker: Restack Managed (lower)");
while (new_pos > 0)
{
meta_stack_tracker_lower_below (tracker, managed[new_pos], managed[new_pos - 1]);
new_pos--;
}
COGL_TRACE_END (StackTrackerRestackManagedLower);
}
void
@ -1260,6 +1274,8 @@ meta_stack_tracker_restack_at_bottom (MetaStackTracker *tracker,
int n_windows;
int pos;
COGL_TRACE_BEGIN_SCOPED (StackTrackerRestackAtBottom,
"Stack tracker: Restack at bottom");
meta_stack_tracker_get_stack (tracker, &windows, &n_windows);
for (pos = 0; pos < n_new_order; pos++)

4
src/core/stack.c
View File

@ -78,6 +78,8 @@ on_stack_changed (MetaStack *stack)
GArray *hidden_stack_ids;
GList *sorted;
COGL_TRACE_BEGIN_SCOPED (StackChanged, "Stack changed");
meta_topic (META_DEBUG_STACK, "Syncing window stack to server");
all_root_children_stacked = g_array_new (FALSE, FALSE, sizeof (uint64_t));
@ -259,6 +261,8 @@ meta_stack_changed (MetaStack *stack)
if (stack->freeze_count > 0)
return;
COGL_TRACE_BEGIN_SCOPED (MetaStackChangedSort, "Stack: Changed");
stack_ensure_sorted (stack);
g_signal_emit (stack, signals[CHANGED], 0);
}