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(svn r11530) -Codechange: do not update Tpool->first_free_index for PoolItems allocated on stack

This commit is contained in:
smatz 2007-11-26 22:56:30 +00:00
parent a7d4334664
commit 6f7d37d3d3
1 changed files with 33 additions and 1 deletions
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34
src/oldpool.h
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@ -46,6 +46,16 @@ public:
uint first_free_index; ///< The index of the first free pool item in this pool
byte **blocks; ///< An array of blocks (one block hold all the items)
/**
* Check if the index of pool item being deleted is lower than cached first_free_index
* @param index index of pool item
* @note usage of min() will result in better code on some architectures
*/
inline void UpdateFirstFreeIndex(uint index)
{
first_free_index = min(first_free_index, index);
}
/**
* Get the size of this pool, i.e. the total number of items you
* can put into it at the current moment; the pool might still
@ -157,10 +167,26 @@ struct PoolItem {
/**
* We like to have the correct class destructed.
* @warning It is called even for object allocated on stack,
* so it is not present in the TPool!
* Then, index is undefined, not associated with TPool in any way.
* @note The idea is to free up allocated memory etc.
*/
virtual ~PoolItem()
{
if (this->index < Tpool->first_free_index) Tpool->first_free_index = this->index;
}
/**
* Constructor of given class.
* @warning It is called even for object allocated on stack,
* so it may not be present in TPool!
* Then, index is undefined, not associated with TPool in any way.
* @note The idea is to initialize variables (except index)
*/
PoolItem()
{
}
/**
@ -176,9 +202,11 @@ struct PoolItem {
/**
* 'Free' the memory allocated by the overriden new.
* @param p the memory to 'free'
* @note we only update Tpool->first_free_index
*/
void operator delete(void *p)
{
Tpool->UpdateFirstFreeIndex(((T*)p)->index);
}
/**
@ -199,9 +227,11 @@ struct PoolItem {
* 'Free' the memory allocated by the overriden new.
* @param p the memory to 'free'
* @param index the original parameter given to create the memory
* @note we only update Tpool->first_free_index
*/
void operator delete(void *p, int index)
{
Tpool->UpdateFirstFreeIndex(index);
}
/**
@ -220,9 +250,11 @@ struct PoolItem {
* 'Free' the memory allocated by the overriden new.
* @param p the memory to 'free'
* @param pn the pointer that was given to 'new' on creation.
* @note we only update Tpool->first_free_index
*/
void operator delete(void *p, T *pn)
{
Tpool->UpdateFirstFreeIndex(pn->index);
}
private: