luc14n0/glib
1
0
Fork 0
mirror of https://gitlab.gnome.org/GNOME/glib.git synced 2025-01-26 14:06:15 +01:00
Code Issues Packages Projects Releases Wiki Activity

signal emission: Allocate instance_and_param with alloca

Browse Source 
This Gives a 5% performance increase in e.g. the emit-handled test.
This commit is contained in:
Alexander Larsson 2012-03-09 09:32:06 +01:00
parent 7b939efa6f
commit bbe4b57195
1 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
gobject/gsignal.c
View File

@ -2121,7 +2121,8 @@ g_signal_chain_from_overridden_handler (gpointer instance,
va_start (var_args, instance);
signal_return_type = node->return_type;
instance_and_params = g_slice_alloc0 (sizeof (GValue) * (n_params + 1));
instance_and_params = g_alloca (sizeof (GValue) * (n_params + 1));
memset (instance_and_params, 0, sizeof (GValue) * (n_params + 1));
param_values = instance_and_params + 1;
for (i = 0; i < node->n_params; i++)
@ -2146,7 +2147,6 @@ g_signal_chain_from_overridden_handler (gpointer instance,
while (i--)
g_value_unset (param_values + i);
g_slice_free1 (sizeof (GValue) * (n_params + 1), instance_and_params);
va_end (var_args);
return;
}
@ -2207,7 +2207,6 @@ g_signal_chain_from_overridden_handler (gpointer instance,
for (i = 0; i < n_params; i++)
g_value_unset (param_values + i);
g_value_unset (instance_and_params);
g_slice_free1 (sizeof (GValue) * (n_params + 1), instance_and_params);
va_end (var_args);
@ -3256,7 +3255,8 @@ g_signal_emit_valist (gpointer instance,
n_params = node->n_params;
signal_return_type = node->return_type;
instance_and_params = g_slice_alloc0 (sizeof (GValue) * (n_params + 1));
instance_and_params = g_alloca (sizeof (GValue) * (n_params + 1));
memset (instance_and_params, 0, sizeof (GValue) * (n_params + 1));
param_values = instance_and_params + 1;
for (i = 0; i < node->n_params; i++)
@ -3281,7 +3281,6 @@ g_signal_emit_valist (gpointer instance,
while (i--)
g_value_unset (param_values + i);
g_slice_free1 (sizeof (GValue) * (n_params + 1), instance_and_params);
return;
}
SIGNAL_LOCK ();
@ -3323,7 +3322,6 @@ g_signal_emit_valist (gpointer instance,
for (i = 0; i < n_params; i++)
g_value_unset (param_values + i);
g_value_unset (instance_and_params);
g_slice_free1 (sizeof (GValue) * (n_params + 1), instance_and_params);
}
/**