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gstvalue: allocate slightly larger than needed tables at startup

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If we pre-allocate only *exactly* as many nodes as we need for the
core types, we are practically guaranteed a re-alloc when external
code like GstVideoTimeCode or GstEncodingProfile register their
own GstValue things. So allocate a bit more than strictly needed.
This commit is contained in:
Tim-Philipp Müller 2017-11-23 13:56:51 +01:00
parent c01949a99e
commit 7ea4152323
1 changed files with 8 additions and 8 deletions
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16
gst/gstvalue.c
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@ -7496,10 +7496,10 @@ G_STMT_START { \
/* These initial sizes are used for the tables
* below, and save a couple of reallocs at startup */
static const gint GST_VALUE_TABLE_DEFAULT_SIZE = 35;
static const gint GST_VALUE_UNION_TABLE_DEFAULT_SIZE = 4;
static const gint GST_VALUE_INTERSECT_TABLE_DEFAULT_SIZE = 11;
static const gint GST_VALUE_SUBTRACT_TABLE_DEFAULT_SIZE = 12;
static const gint GST_VALUE_TABLE_DEFAULT_SIZE = 40;
static const gint GST_VALUE_UNION_TABLE_DEFAULT_SIZE = 8;
static const gint GST_VALUE_INTERSECT_TABLE_DEFAULT_SIZE = 16;
static const gint GST_VALUE_SUBTRACT_TABLE_DEFAULT_SIZE = 16;
void
_priv_gst_value_initialize (void)
@ -7686,22 +7686,22 @@ _priv_gst_value_initialize (void)
#if GST_VERSION_NANO == 1
/* If building from git master, check starting array sizes matched actual size
* so we can keep the defines in sync and save a few reallocs on startup */
if (gst_value_table->len != GST_VALUE_TABLE_DEFAULT_SIZE) {
if (gst_value_table->len > GST_VALUE_TABLE_DEFAULT_SIZE) {
GST_ERROR ("Wrong initial gst_value_table size. "
"Please set GST_VALUE_TABLE_DEFAULT_SIZE to %u in gstvalue.c",
gst_value_table->len);
}
if (gst_value_union_funcs->len != GST_VALUE_UNION_TABLE_DEFAULT_SIZE) {
if (gst_value_union_funcs->len > GST_VALUE_UNION_TABLE_DEFAULT_SIZE) {
GST_ERROR ("Wrong initial gst_value_union_funcs table size. "
"Please set GST_VALUE_UNION_TABLE_DEFAULT_SIZE to %u in gstvalue.c",
gst_value_union_funcs->len);
}
if (gst_value_intersect_funcs->len != GST_VALUE_INTERSECT_TABLE_DEFAULT_SIZE) {
if (gst_value_intersect_funcs->len > GST_VALUE_INTERSECT_TABLE_DEFAULT_SIZE) {
GST_ERROR ("Wrong initial gst_value_intersect_funcs table size. "
"Please set GST_VALUE_INTERSECT_TABLE_DEFAULT_SIZE to %u in gstvalue.c",
gst_value_intersect_funcs->len);
}
if (gst_value_subtract_funcs->len != GST_VALUE_SUBTRACT_TABLE_DEFAULT_SIZE) {
if (gst_value_subtract_funcs->len > GST_VALUE_SUBTRACT_TABLE_DEFAULT_SIZE) {
GST_ERROR ("Wrong initial gst_value_subtract_funcs table size. "
"Please set GST_VALUE_SUBTRACT_TABLE_DEFAULT_SIZE to %u in gstvalue.c",
gst_value_subtract_funcs->len);