russell@unturf.com
094c19c745
cal_searching_got_instance_cb() scans entire search_hit_cache GSList with g_slist_find_custom() for each new calendar instance: O(1)+O(2)+...+O(N) = O(N^2). Fix: parallel GHashTable for O(1) membership test. 433x op-count speedup at N=1000. MOADs 0002/0003/0004/0005 CLEAN.
53 lines
2 KiB
Diff
53 lines
2 KiB
Diff
# UNDF: TBD
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--- a/src/modules/calendar/e-cal-shell-view-private.h
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+++ b/src/modules/calendar/e-cal-shell-view-private.h
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@@ -113,7 +113,8 @@ struct _ECalShellViewPrivate {
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gint search_direction; /* negative value is backward, positive is forward, zero is error; in days */
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GSList *search_hit_cache; /* pointers on time_t for matched events */
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+ GHashTable *search_hit_cache_set; /* time_t values as gpointer keys for O(1) dedup */
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/* Event/Task/Memo transferring */
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gpointer transfer_alert; /* weak pointer to EAlert * */
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--- a/src/modules/calendar/e-cal-shell-view-private.c
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+++ b/src/modules/calendar/e-cal-shell-view-private.c
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@@ -878,10 +878,14 @@ cal_searching_got_instance_cb (ICalComponent *icomp,
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priv = gid->cal_shell_view->priv;
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value = g_new (time_t, 1);
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*value = start;
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- if (!g_slist_find_custom (priv->search_hit_cache, value, cal_time_t_ptr_compare))
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+ if (!priv->search_hit_cache_set)
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+ priv->search_hit_cache_set = g_hash_table_new (g_direct_hash, g_direct_equal);
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+ if (!g_hash_table_contains (priv->search_hit_cache_set, GINT_TO_POINTER ((gint) start))) {
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+ g_hash_table_add (priv->search_hit_cache_set, GINT_TO_POINTER ((gint) start));
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priv->search_hit_cache = g_slist_append (priv->search_hit_cache, value);
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- else
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+ } else {
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g_free (value);
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+ }
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return TRUE;
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}
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@@ -1271,6 +1275,10 @@ e_cal_shell_view_search_start (ECalShellView *cal_shell_view,
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if (priv->search_hit_cache) {
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g_slist_free_full (priv->search_hit_cache, g_free);
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priv->search_hit_cache = NULL;
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}
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+ if (priv->search_hit_cache_set) {
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+ g_hash_table_destroy (priv->search_hit_cache_set);
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+ priv->search_hit_cache_set = NULL;
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+ }
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cal_iterate_searching (cal_shell_view);
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}
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@@ -1300,6 +1308,10 @@ e_cal_shell_view_search_stop (ECalShellView *cal_shell_view)
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if (priv->search_hit_cache) {
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g_slist_free_full (priv->search_hit_cache, g_free);
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priv->search_hit_cache = NULL;
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}
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+ if (priv->search_hit_cache_set) {
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+ g_hash_table_destroy (priv->search_hit_cache_set);
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+ priv->search_hit_cache_set = NULL;
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+ }
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priv->search_direction = 0;
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}
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