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fix preallocation logic, support DISABLE_MEM_POOLS properly, group value

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Sun Aug 12 02:07:10 2001  Tim Janik  <timj@gtk.org>

        * gvaluearray.[hc]: fix preallocation logic, support DISABLE_MEM_POOLS
        properly, group value allocations.
        (g_value_array_new): fix semantic of n_prealloced argument, so it's
        really just about preallocation space.
This commit is contained in:
Tim Janik 2001-08-12 00:55:38 +00:00 committed by Tim Janik
parent 6132f0496a
commit 4bc2b2c3b4
3 changed files with 70 additions and 11 deletions
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13
gobject/ChangeLog
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@ -1,3 +1,16 @@
Sun Aug 12 02:07:10 2001 Tim Janik <timj@gtk.org>
* gvaluearray.[hc]: fix preallocation logic, support DISABLE_MEM_POOLS
properly, group value allocations.
(g_value_array_new): fix semantic of n_prealloced argument, so it's
really just about preallocation space.
2001-07-23 Padraig O'Briain <Padraig.Obriain@Sun.COM>
* gobject/gobjectnotifyqueue.c: fix unconditional check of
first GParamSpec in g_object_notify_queue_thaw(); to prevent
property notification being lost.
2001-08-06 Sven Neumann <sven@gimp.org>
* gobject.[ch]:

65
gobject/gvaluearray.c
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@ -25,6 +25,11 @@
#include <string.h>
#include <stdlib.h> /* qsort() */
#ifdef DISABLE_MEM_POOLS
# define GROUP_N_VALUES (1) /* power of 2 !! */
#else
# define GROUP_N_VALUES (8) /* power of 2 !! */
#endif
/* --- functions --- */
@ -38,14 +43,49 @@ g_value_array_get_nth (GValueArray *value_array,
return value_array->values + index;
}
static inline void
value_array_grow (GValueArray *value_array,
guint n_values,
gboolean zero_init)
{
g_return_if_fail (n_values >= value_array->n_values);
value_array->n_values = n_values;
if (value_array->n_values > value_array->n_prealloced)
{
guint i = value_array->n_prealloced;
value_array->n_prealloced = (value_array->n_values + GROUP_N_VALUES - 1) & ~(GROUP_N_VALUES - 1);
value_array->values = g_renew (GValue, value_array->values, value_array->n_prealloced);
if (!zero_init)
i = value_array->n_values;
memset (value_array->values + i, 0,
(value_array->n_prealloced - i) * sizeof (value_array->values[0]));
}
}
static inline void
value_array_shrink (GValueArray *value_array)
{
#ifdef DISABLE_MEM_POOLS
if (value_array->n_prealloced >= value_array->n_values + GROUP_N_VALUES)
{
value_array->n_prealloced = (value_array->n_values + GROUP_N_VALUES - 1) & ~(GROUP_N_VALUES - 1);
value_array->values = g_renew (GValue, value_array->values, value_array->n_prealloced);
}
#endif
}
GValueArray*
g_value_array_new (guint n_prealloced)
{
GValueArray *value_array = g_new0 (GValueArray, 1);
GValueArray *value_array = g_new (GValueArray, 1);
value_array->n_values = n_prealloced;
value_array->values = g_renew (GValue, value_array->values, value_array->n_values);
memset (value_array->values, 0, value_array->n_values * sizeof (value_array->values[0]));
value_array->n_values = 0;
value_array->n_prealloced = 0;
value_array->values = NULL;
value_array_grow (value_array, n_prealloced, TRUE);
value_array->n_values = 0;
return value_array;
}
@ -76,10 +116,11 @@ g_value_array_copy (const GValueArray *value_array)
g_return_val_if_fail (value_array != NULL, NULL);
new_array = g_new0 (GValueArray, 1);
new_array->n_values = value_array->n_values;
new_array->values = g_renew (GValue, new_array->values, new_array->n_values);
memset (new_array->values, 0, new_array->n_values * sizeof (new_array->values[0]));
new_array = g_new (GValueArray, 1);
new_array->n_values = 0;
new_array->values = NULL;
new_array->n_prealloced = 0;
value_array_grow (new_array, value_array->n_values, TRUE);
for (i = 0; i < new_array->n_values; i++)
if (G_VALUE_TYPE (value_array->values + i) != 0)
{
@ -121,8 +162,8 @@ g_value_array_insert (GValueArray *value_array,
/* we support NULL for "value" as a shortcut for an unset value */
i = value_array->n_values++;
value_array->values = g_renew (GValue, value_array->values, value_array->n_values);
i = value_array->n_values;
value_array_grow (value_array, value_array->n_values + 1, FALSE);
if (index + 1 < value_array->n_values)
g_memmove (value_array->values + index + 1, value_array->values + index,
(i - index) * sizeof (value_array->values[0]));
@ -148,7 +189,9 @@ g_value_array_remove (GValueArray *value_array,
if (index < value_array->n_values)
g_memmove (value_array->values + index, value_array->values + index + 1,
(value_array->n_values - index) * sizeof (value_array->values[0]));
value_array->values = g_renew (GValue, value_array->values, value_array->n_values);
value_array_shrink (value_array);
if (value_array->n_prealloced > value_array->n_values)
memset (value_array->values + value_array->n_values, 0, sizeof (value_array->values[0]));
return value_array;
}

3
gobject/gvaluearray.h
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@ -36,6 +36,9 @@ struct _GValueArray
{
guint n_values;
GValue *values;
/*< private >*/
guint n_prealloced;
};