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(svn r10297) -Codechange: increase the performance of CargoPacket::AllocateRaw using a very simple "caching" system.

This commit is contained in:
rubidium 2007-06-23 20:38:28 +00:00
parent e1958a1d59
commit be35df3f03
1 changed files with 7 additions and 1 deletions
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8
src/cargopacket.cpp
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@ -8,6 +8,9 @@
#include "cargopacket.h"
#include "saveload.h"
/** Cache for speeding up lookups in AllocateRaw */
static uint _first_free_cargo_packet_index;
/**
* Called if a new block is added to the station-pool
*/
@ -31,6 +34,7 @@ DEFINE_OLD_POOL(CargoPacket, CargoPacket, CargoPacketPoolNewBlock, CargoPacketPo
void InitializeCargoPackets()
{
_first_free_cargo_packet_index = 0;
/* Clean the cargo packet pool and create 1 block in it */
CleanPool(&_CargoPacket_pool);
AddBlockToPool(&_CargoPacket_pool);
@ -55,6 +59,7 @@ CargoPacket::CargoPacket(StationID source, uint16 count)
CargoPacket::~CargoPacket()
{
if (this->index < _first_free_cargo_packet_index) _first_free_cargo_packet_index = this->index;
this->count = 0;
}
@ -92,12 +97,13 @@ void CargoPacket::operator delete(void *p, CargoPacket::ID cp_idx)
/* We don't use FOR_ALL here, because FOR_ALL skips invalid items.
* TODO - This is just a temporary stage, this will be removed. */
for (cp = GetCargoPacket(0); cp != NULL; cp = (cp->index + 1U < GetCargoPacketPoolSize()) ? GetCargoPacket(cp->index + 1U) : NULL) {
for (cp = GetCargoPacket(_first_free_cargo_packet_index); cp != NULL; cp = (cp->index + 1U < GetCargoPacketPoolSize()) ? GetCargoPacket(cp->index + 1U) : NULL) {
if (!cp->IsValid()) {
CargoPacket::ID index = cp->index;
memset(cp, 0, sizeof(CargoPacket));
cp->index = index;
_first_free_cargo_packet_index = cp->index;
return cp;
}
}