From 7b14b2f01fd0218c0bbe0a5c4071fff190c91ce1 Mon Sep 17 00:00:00 2001
From: Ziv Scully <ziv@mit.edu>
Date: Wed, 11 Nov 2015 20:01:48 -0500
Subject: Rewrite LRU cache. Now uses one big hash table and is less buggy.

---
 include/urweb/types_cpp.h | 29 +++++++++++------------------
 include/urweb/urweb_cpp.h |  8 +++-----
 2 files changed, 14 insertions(+), 23 deletions(-)

(limited to 'include')

diff --git a/include/urweb/types_cpp.h b/include/urweb/types_cpp.h
index 84423105..4847a3fd 100644
--- a/include/urweb/types_cpp.h
+++ b/include/urweb/types_cpp.h
@@ -123,31 +123,24 @@ typedef struct {
 
 #include "uthash.h"
 
-typedef struct uw_Sqlcache_CacheValue {
+typedef struct uw_Sqlcache_Value {
   char *result;
   char *output;
-} uw_Sqlcache_CacheValue;
+  unsigned long timeValid;
+} uw_Sqlcache_Value;
 
-typedef struct uw_Sqlcache_CacheEntry {
+typedef struct uw_Sqlcache_Entry {
   char *key;
-  void *value;
-  time_t timeValid;
-  struct uw_Sqlcache_CacheEntry *prev;
-  struct uw_Sqlcache_CacheEntry *next;
+  uw_Sqlcache_Value *value;
+  unsigned long timeInvalid;
   UT_hash_handle hh;
-} uw_Sqlcache_CacheEntry;
-
-typedef struct uw_Sqlcache_CacheList {
-  uw_Sqlcache_CacheEntry *first;
-  uw_Sqlcache_CacheEntry *last;
-  int size;
-} uw_Sqlcache_CacheList;
+} uw_Sqlcache_Entry;
 
 typedef struct uw_Sqlcache_Cache {
-  uw_Sqlcache_CacheEntry *table;
-  time_t timeInvalid;
-  uw_Sqlcache_CacheList *lru;
-  int height;
+  struct uw_Sqlcache_Entry *table;
+  unsigned long timeInvalid;
+  unsigned long timeNow;
+  UT_hash_handle hh;
 } uw_Sqlcache_Cache;
 
 #endif
diff --git a/include/urweb/urweb_cpp.h b/include/urweb/urweb_cpp.h
index ab2a91c1..52e54372 100644
--- a/include/urweb/urweb_cpp.h
+++ b/include/urweb/urweb_cpp.h
@@ -405,10 +405,8 @@ void uw_Basis_writec(struct uw_context *, char);
 
 // Sqlcache.
 
-#include "uthash.h"
-
-uw_Sqlcache_CacheValue *uw_Sqlcache_check(uw_Sqlcache_Cache *, char **);
-uw_Sqlcache_CacheValue *uw_Sqlcache_store(uw_Sqlcache_Cache *, char **, uw_Sqlcache_CacheValue *);
-uw_Sqlcache_CacheValue *uw_Sqlcache_flush(uw_Sqlcache_Cache *, char **);
+uw_Sqlcache_Value *uw_Sqlcache_check(uw_Sqlcache_Cache *, char **, int);
+void *uw_Sqlcache_store(uw_Sqlcache_Cache *, char **, int, uw_Sqlcache_Value *);
+void *uw_Sqlcache_flush(uw_Sqlcache_Cache *, char **, int);
 
 #endif
-- 
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