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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/erl_interface/src/registry/reg_purge.c
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The R13B03 release.OTP_R13B03
Diffstat (limited to 'lib/erl_interface/src/registry/reg_purge.c')
-rw-r--r--lib/erl_interface/src/registry/reg_purge.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/lib/erl_interface/src/registry/reg_purge.c b/lib/erl_interface/src/registry/reg_purge.c
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+++ b/lib/erl_interface/src/registry/reg_purge.c
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+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 1998-2009. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * %CopyrightEnd%
+ *
+
+ */
+#include <stdlib.h>
+#include "reg.h"
+
+static ei_bucket *do_purge(ei_reg *reg, int i)
+{
+ ei_hash *tab = reg->tab;
+ ei_bucket *head = tab->tab[i];
+ ei_bucket *this, *next;
+ ei_reg_obj *obj;
+
+ /* first position special case */
+ while ((this=head)) {
+ obj = (ei_reg_obj*)(this->value); /* cast to eliminate 'const' warning */
+ if (obj->attr & EI_DELET) {
+ head = this->next;
+ ei_reg_free(reg,obj); /* free obj to freelist */
+ ei_hash_bfree(tab,this); /* free bucket to freelist */
+ tab->nelem--;
+ }
+ else break;
+ }
+
+ /* check remaining positions */
+ this = head;
+ while (this && this->next) {
+ next = this->next;
+ obj = (ei_reg_obj*)(next->value); /* cast to eliminate 'const' warning */
+ if (obj->attr & EI_DELET) {
+ this->next = next->next;
+ ei_reg_free(reg,obj); /* free object to freelist */
+ ei_hash_bfree(tab,next); /* free bucket to freelist */
+ tab->nelem--;
+ }
+ else this = this->next;
+ }
+
+ return head;
+}
+
+int ei_reg_purge(ei_reg *reg)
+{
+ ei_hash *tab;
+ int i;
+
+ if (!reg) return -1;
+ tab = reg->tab;
+
+ for (i=0;i<tab->size;i++) {
+ if ((tab->tab[i])) {
+ tab->tab[i] = do_purge(reg,i);
+ if (!tab->tab[i]) tab->npos--;
+ }
+ }
+
+ return 0;
+}