1 files changed, 206 insertions, 0 deletions
diff --git a/frontends/amiga/font_cache.c b/frontends/amiga/font_cache.c
new file mode 100644
index 000000000..ea285730a
--- /dev/null
+++ b/frontends/amiga/font_cache.c
@@ -0,0 +1,206 @@
+/*
+ * Copyright 2015 Chris Young <chris@unsatisfactorysoftware.co.uk>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf 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; version 2 of the License.
+ *
+ * NetSurf 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "amiga/os3support.h"
+#include <string.h>
+
+#include <proto/timer.h>
+#include <proto/utility.h>
+
+#include "utils/log.h"
+
+#include "amiga/font.h"
+#include "amiga/font_bullet.h"
+#include "amiga/font_cache.h"
+#include "amiga/schedule.h"
+
+#ifdef __amigaos4__
+#include "amiga/hash/xxhash.h"
+#else
+#include "amiga/object.h"
+#endif
+
+#ifdef __amigaos4__
+static struct SkipList *ami_font_cache_list = NULL;
+static struct Hook ami_font_cache_hook;
+#else
+static struct MinList *ami_font_cache_list = NULL;
+#endif
+
+
+
+#ifdef __amigaos4__
+static LONG ami_font_cache_sort(struct Hook *hook, APTR key1, APTR key2)
+{
+	if(key1 == key2) return 0;
+	if(key1 < key2) return -1;
+	return 1;
+}
+#endif
+
+#ifdef __amigaos4__
+static void ami_font_cache_cleanup(struct SkipList *skiplist)
+{
+	struct ami_font_cache_node *node;
+	struct ami_font_cache_node *nnode;
+	struct TimeVal curtime;
+
+	node = (struct ami_font_cache_node *)GetFirstSkipNode(skiplist);
+	if(node == NULL) return;
+
+	do {
+		nnode = (struct ami_font_cache_node *)GetNextSkipNode(skiplist, (struct SkipNode *)node);
+		GetSysTime(&curtime);
+		SubTime(&curtime, &node->lastused);
+		if(curtime.Seconds > 300)
+		{
+			LOG("Freeing font %p not used for %ld seconds", node->skip_node.sn_Key, curtime.Seconds);
+			ami_font_bullet_close(node);
+			RemoveSkipNode(skiplist, node->skip_node.sn_Key);
+		}
+	} while((node = nnode));
+
+	/* reschedule to run in five minutes */
+	ami_schedule(300000, (void *)ami_font_cache_cleanup, ami_font_cache_list);
+}
+#else
+static void ami_font_cache_cleanup(struct MinList *ami_font_cache_list)
+{
+	struct nsObject *node;
+	struct nsObject *nnode;
+	struct ami_font_cache_node *fnode;
+	struct TimeVal curtime;
+
+	if(IsMinListEmpty(ami_font_cache_list)) return;
+
+	node = (struct nsObject *)GetHead((struct List *)ami_font_cache_list);
+
+	do
+	{
+		nnode=(struct nsObject *)GetSucc((struct Node *)node);
+		fnode = node->objstruct;
+		GetSysTime(&curtime);
+		SubTime(&curtime, &fnode->lastused);
+		if(curtime.Seconds > 300)
+		{
+			LOG("Freeing %s not used for %ld seconds", node->dtz_Node.ln_Name, curtime.Seconds);
+			DelObject(node);
+		}
+	} while((node=nnode));
+
+	/* reschedule to run in five minutes */
+	ami_schedule(300000, (void *)ami_font_cache_cleanup, ami_font_cache_list);
+}
+#endif
+
+#ifdef __amigaos4__
+static void ami_font_cache_del_skiplist(struct SkipList *skiplist)
+{
+	struct SkipNode *node;
+	struct SkipNode *nnode;
+
+	node = GetFirstSkipNode(skiplist);
+	if(node == NULL) return;
+
+	do {
+		nnode = GetNextSkipNode(skiplist, node);
+		ami_font_bullet_close((struct ami_font_cache_node *)node);
+		
+	} while((node = nnode));
+
+	DeleteSkipList(skiplist);
+}
+#endif
+
+
+struct ami_font_cache_node *ami_font_cache_locate(const char *font)
+{
+	struct ami_font_cache_node *nodedata;
+	uint32 hash = 0;
+
+#ifdef __amigaos4__
+	hash = XXH32(font, strlen(font), 0);
+	nodedata = (struct ami_font_cache_node *)FindSkipNode(ami_font_cache_list, (APTR)hash);		
+#else
+	struct nsObject *node = (struct nsObject *)FindIName((struct List *)ami_font_cache_list, font);
+	if(node) nodedata = node->objstruct;
+#endif
+
+	if(nodedata) {
+		GetSysTime(&nodedata->lastused);
+		return nodedata;
+	}
+
+	LOG("Font cache miss: %s (%lx)", font, hash);
+	return NULL;
+}
+
+struct ami_font_cache_node *ami_font_cache_alloc_entry(const char *font)
+{
+	struct ami_font_cache_node *nodedata;
+
+#ifdef __amigaos4__
+	uint32 hash = XXH32(font, strlen(font), 0);
+	nodedata = (struct ami_font_cache_node *)InsertSkipNode(ami_font_cache_list, (APTR)hash, sizeof(struct ami_font_cache_node));
+#else
+	nodedata = AllocVecTagList(sizeof(struct ami_font_cache_node), NULL);
+#endif
+
+	GetSysTime(&nodedata->lastused);
+
+	return nodedata;
+}
+
+void ami_font_cache_insert(struct ami_font_cache_node *nodedata, const char *font)
+{
+#ifndef __amigaos4__
+	struct nsObject *node = AddObject(ami_font_cache_list, AMINS_FONT);
+	if(node) {
+		ObjectCallback(node, ami_font_bullet_close);
+		node->objstruct = nodedata;
+		node->dtz_Node.ln_Name = strdup(font);
+	}
+#endif
+}
+
+void ami_font_cache_fini(void)
+{
+	LOG("Cleaning up font cache");
+	ami_schedule(-1, (void *)ami_font_cache_cleanup, ami_font_cache_list);
+#ifdef __amigaos4__
+	ami_font_cache_del_skiplist(ami_font_cache_list);
+#else
+	FreeObjList(ami_font_cache_list);
+#endif
+	ami_font_cache_list = NULL;
+}
+
+void ami_font_cache_init(void)
+{
+#ifdef __amigaos4__
+	ami_font_cache_hook.h_Entry = (HOOKFUNC)ami_font_cache_sort;
+	ami_font_cache_hook.h_Data = 0;
+	ami_font_cache_list = CreateSkipList(&ami_font_cache_hook, 8);
+#else
+	ami_font_cache_list = NewObjList();
+#endif
+
+	/* run first cleanup in ten minutes */
+	ami_schedule(600000, (void *)ami_font_cache_cleanup, ami_font_cache_list);
+}
+