From 3b287d8987186fc9c307616f9e4d5599129d9e55 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fredrik=20H=C3=BCbinette=20=28Hubbe=29?= <hubbe@hubbe.net>
Date: Sun, 18 Jul 1999 00:06:15 -0700
Subject: [PATCH] faster and better
Rev: tutorial/Cache.pike:1.2
---
tutorial/Cache.pike | 51 ++++++++++++++++++++++++++++++++++++---------
1 file changed, 41 insertions(+), 10 deletions(-)
diff --git a/tutorial/Cache.pike b/tutorial/Cache.pike
index 06459f3ee5..5dec74c3cf 100644
--- a/tutorial/Cache.pike
+++ b/tutorial/Cache.pike
@@ -1,34 +1,65 @@
mapping data=([]);
string file;
+Stdio.File log;
-int savers;
-
-mixed `[](string key)
+mixed `[](mixed key)
{
return data[key];
}
void save()
{
- Stdio.write_file(file,encode_value(data));
+ if(Stdio.write_file(file+".tmp",encode_value(data)))
+ {
+ if(mv(file+".tmp",file))
+ {
+ if(log) destruct(log);
+ rm(file+".log");
+ }
+ }
}
-mixed `[]=(string key, mixed val)
+mixed `[]=(mixed key, mixed val)
{
+ if(data[key] == val) return val;
data[key]=val;
- return class delaysave
- {
- void create() { savers++; }
- void destroy() { if(!--savers) save(); }
- }();
+
+ if(!log) log=Stdio.File(file+".log","wct");
+
+ log->write(
+ replace(encode_value( ({key,val}) ),"\0","\0\1")+"\0\0"
+ );
+
+ return val;
}
void create(string f)
{
+ werror("Cache: %s",f);
file=f;
catch {
data=decode_value(Stdio.read_file(file));
+ werror(" %d entries",sizeof(data));
};
+
+ catch {
+ if(string s=Stdio.read_file(file+".log"))
+ {
+ array t=s/"\0\0";
+ t=t[..sizeof(t)-2];
+ foreach(t, string tmp)
+ {
+ string key,val;
+ [key,val]=decode_value(replace(tmp,"\0\1","\0"));
+ data[key]=val;
+ }
+ werror(" + %d logged",sizeof(t));
+ save();
+ }
+ };
+
+ werror("\n");
+
atexit(save);
}
--
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