From 3f267b1795d68e660af9ec1678909a6102102d7d Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Thu, 5 Sep 2013 18:22:02 +0200
Subject: Tag, ...: move to libtag.a

---
 src/TagPool.cxx | 155 --------------------------------------------------------
 1 file changed, 155 deletions(-)
 delete mode 100644 src/TagPool.cxx

(limited to 'src/TagPool.cxx')

diff --git a/src/TagPool.cxx b/src/TagPool.cxx
deleted file mode 100644
index 5a0b33c47..000000000
--- a/src/TagPool.cxx
+++ /dev/null
@@ -1,155 +0,0 @@
-/*
- * Copyright (C) 2003-2013 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "config.h"
-#include "TagPool.hxx"
-#include "Tag.hxx"
-
-#include <glib.h>
-
-#include <assert.h>
-#include <string.h>
-
-Mutex tag_pool_lock;
-
-#define NUM_SLOTS 4096
-
-struct slot {
-	struct slot *next;
-	unsigned char ref;
-	TagItem item;
-} mpd_packed;
-
-static struct slot *slots[NUM_SLOTS];
-
-static inline unsigned
-calc_hash_n(enum tag_type type, const char *p, size_t length)
-{
-	unsigned hash = 5381;
-
-	assert(p != nullptr);
-
-	while (length-- > 0)
-		hash = (hash << 5) + hash + *p++;
-
-	return hash ^ type;
-}
-
-static inline unsigned
-calc_hash(enum tag_type type, const char *p)
-{
-	unsigned hash = 5381;
-
-	assert(p != nullptr);
-
-	while (*p != 0)
-		hash = (hash << 5) + hash + *p++;
-
-	return hash ^ type;
-}
-
-static inline struct slot *
-tag_item_to_slot(TagItem *item)
-{
-	return (struct slot*)(((char*)item) - offsetof(struct slot, item));
-}
-
-static struct slot *slot_alloc(struct slot *next,
-			       enum tag_type type,
-			       const char *value, int length)
-{
-	struct slot *slot;
-
-	slot = (struct slot *)
-		g_malloc(sizeof(*slot) - sizeof(slot->item.value) + length + 1);
-	slot->next = next;
-	slot->ref = 1;
-	slot->item.type = type;
-	memcpy(slot->item.value, value, length);
-	slot->item.value[length] = 0;
-	return slot;
-}
-
-TagItem *
-tag_pool_get_item(enum tag_type type, const char *value, size_t length)
-{
-	struct slot **slot_p, *slot;
-
-	slot_p = &slots[calc_hash_n(type, value, length) % NUM_SLOTS];
-	for (slot = *slot_p; slot != nullptr; slot = slot->next) {
-		if (slot->item.type == type &&
-		    length == strlen(slot->item.value) &&
-		    memcmp(value, slot->item.value, length) == 0 &&
-		    slot->ref < 0xff) {
-			assert(slot->ref > 0);
-			++slot->ref;
-			return &slot->item;
-		}
-	}
-
-	slot = slot_alloc(*slot_p, type, value, length);
-	*slot_p = slot;
-	return &slot->item;
-}
-
-TagItem *
-tag_pool_dup_item(TagItem *item)
-{
-	struct slot *slot = tag_item_to_slot(item);
-
-	assert(slot->ref > 0);
-
-	if (slot->ref < 0xff) {
-		++slot->ref;
-		return item;
-	} else {
-		/* the reference counter overflows above 0xff;
-		   duplicate the item, and start with 1 */
-		size_t length = strlen(item->value);
-		struct slot **slot_p =
-			&slots[calc_hash_n(item->type, item->value,
-					   length) % NUM_SLOTS];
-		slot = slot_alloc(*slot_p, item->type,
-				  item->value, strlen(item->value));
-		*slot_p = slot;
-		return &slot->item;
-	}
-}
-
-void
-tag_pool_put_item(TagItem *item)
-{
-	struct slot **slot_p, *slot;
-
-	slot = tag_item_to_slot(item);
-	assert(slot->ref > 0);
-	--slot->ref;
-
-	if (slot->ref > 0)
-		return;
-
-	for (slot_p = &slots[calc_hash(item->type, item->value) % NUM_SLOTS];
-	     *slot_p != slot;
-	     slot_p = &(*slot_p)->next) {
-		assert(*slot_p != nullptr);
-	}
-
-	*slot_p = slot->next;
-	g_free(slot);
-}
-- 
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