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authorKUDr <kudr@openttd.org>2006-11-18 19:20:47 +0000
committerKUDr <kudr@openttd.org>2006-11-18 19:20:47 +0000
commit9b81f084af2a19da3487fa747bc40f2c4b876845 (patch)
tree0dcbe68a8fa0166ef30d7a7f8870a502837bfa23 /yapf
parent3f64e50fc9a8f336fae1e59adabf604d8778cd4e (diff)
downloadopenttd-9b81f084af2a19da3487fa747bc40f2c4b876845.tar.xz
(svn r7210) -CodeChange: [YAPF] the global cache object is now not destroyed/recreated whenever the cache is invalidated. It now supports Flush() method that is used instead. It should also fix mem-leak warning produced by valgrind (Tron)
Diffstat (limited to 'yapf')
-rw-r--r--yapf/array.hpp2
-rw-r--r--yapf/fixedsizearray.hpp13
-rw-r--r--yapf/hashtable.hpp6
-rw-r--r--yapf/yapf_costcache.hpp18
4 files changed, 26 insertions, 13 deletions
diff --git a/yapf/array.hpp b/yapf/array.hpp
index d6fe2a75f..e8eff1c8c 100644
--- a/yapf/array.hpp
+++ b/yapf/array.hpp
@@ -24,6 +24,8 @@ public:
/** implicit constructor */
FORCEINLINE CArrayT() { }
+ /** Clear (destroy) all items */
+ FORCEINLINE void Clear() {m_a.Clear();}
/** Return actual number of items */
FORCEINLINE int Size() const
{
diff --git a/yapf/fixedsizearray.hpp b/yapf/fixedsizearray.hpp
index 5d6c3b313..48b177f3c 100644
--- a/yapf/fixedsizearray.hpp
+++ b/yapf/fixedsizearray.hpp
@@ -51,12 +51,21 @@ struct CFixedSizeArrayT {
// release one reference to the shared block
if ((--RefCnt()) > 0) return; // and return if there is still some owner
+ Clear();
+ // free the memory block occupied by items
+ free(((int8*)m_items) - ThdrSize);
+ m_items = NULL;
+ }
+
+ /** Clear (destroy) all items */
+ FORCEINLINE void Clear()
+ {
// walk through all allocated items backward and destroy them
for (Titem* pItem = &m_items[Size() - 1]; pItem >= m_items; pItem--) {
pItem->~Titem_();
}
- free(((int8*)m_items) - ThdrSize);
- m_items = NULL;
+ // number of items become zero
+ SizeRef() = 0;
}
protected:
diff --git a/yapf/hashtable.hpp b/yapf/hashtable.hpp
index 71c4eac74..c6b52e50a 100644
--- a/yapf/hashtable.hpp
+++ b/yapf/hashtable.hpp
@@ -12,6 +12,9 @@ struct CHashTableSlotT
CHashTableSlotT() : m_pFirst(NULL) {}
+ /** hash table slot helper - clears the slot by simple forgetting its items */
+ FORCEINLINE void Clear() {m_pFirst = NULL;}
+
/** hash table slot helper - linear search for item with given key through the given blob - const version */
FORCEINLINE const Titem_* Find(const Key& key) const
{
@@ -162,6 +165,9 @@ public:
/** item count */
FORCEINLINE int Count() const {return m_num_items;}
+ /** simple clear - forget all items - used by CSegmentCostCacheT.Flush() */
+ FORCEINLINE void Clear() const {for (int i = 0; i < Tcapacity; i++) m_slots[i].Clear();}
+
/** const item search */
const Titem_* Find(const Tkey& key) const
{
diff --git a/yapf/yapf_costcache.hpp b/yapf/yapf_costcache.hpp
index 8e99219cc..4d1f5ea0f 100644
--- a/yapf/yapf_costcache.hpp
+++ b/yapf/yapf_costcache.hpp
@@ -104,6 +104,9 @@ struct CSegmentCostCacheT
FORCEINLINE CSegmentCostCacheT() {}
+ /** flush (clear) the cache */
+ FORCEINLINE void Flush() {m_map.Clear(); m_heap.Clear();};
+
FORCEINLINE Tsegment& Get(Key& key, bool *found)
{
Tsegment* item = m_map.Find(key);
@@ -143,12 +146,11 @@ protected:
/// to access inherited path finder
FORCEINLINE Tpf& Yapf() {return *static_cast<Tpf*>(this);}
- FORCEINLINE static Cache*& stGlobalCachePtr() {static Cache* pC = NULL; return pC;}
-
FORCEINLINE static Cache& stGetGlobalCache()
{
static int last_rail_change_counter = 0;
static Date last_date = 0;
+ static Cache C;
// some statistics
if (last_date != _date) {
@@ -157,18 +159,12 @@ protected:
_total_pf_time_us = 0;
}
- Cache*& pC = stGlobalCachePtr();
-
// delete the cache sometimes...
- if (pC != NULL && last_rail_change_counter != Cache::s_rail_change_counter) {
+ if (last_rail_change_counter != Cache::s_rail_change_counter) {
last_rail_change_counter = Cache::s_rail_change_counter;
- delete pC;
- pC = NULL;
+ C.Flush();
}
-
- if (pC == NULL)
- pC = new Cache();
- return *pC;
+ return C;
}
public: