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authorrubidium <rubidium@openttd.org>2007-08-05 21:20:55 +0000
committerrubidium <rubidium@openttd.org>2007-08-05 21:20:55 +0000
commit83e1fdcb0167c36729889511f7b1165038044c88 (patch)
treebfe043c51f23052fc39f35769a2ede1e66998148 /src
parentab5fa3add2f5f2feeb8f48127f6ee5ab69d42f65 (diff)
downloadopenttd-83e1fdcb0167c36729889511f7b1165038044c88.tar.xz
(svn r10799) -Fix: only calling QuickFree and not the destructor on pool cleanups might cause memory leaks due to the way C++ works.
Diffstat (limited to 'src')
-rw-r--r--src/depot.cpp2
-rw-r--r--src/group.h2
-rw-r--r--src/group_cmd.cpp7
-rw-r--r--src/oldpool.cpp2
-rw-r--r--src/oldpool.h39
-rw-r--r--src/signs.cpp7
-rw-r--r--src/signs.h2
-rw-r--r--src/station.cpp13
-rw-r--r--src/station.h2
-rw-r--r--src/town.h2
-rw-r--r--src/town_cmd.cpp10
-rw-r--r--src/vehicle.cpp12
-rw-r--r--src/vehicle.h2
-rw-r--r--src/waypoint.cpp11
-rw-r--r--src/waypoint.h2
15 files changed, 48 insertions, 67 deletions
diff --git a/src/depot.cpp b/src/depot.cpp
index 63c6629e1..2f6852bcc 100644
--- a/src/depot.cpp
+++ b/src/depot.cpp
@@ -37,6 +37,8 @@ Depot *GetDepotByTile(TileIndex tile)
*/
Depot::~Depot()
{
+ if (CleaningPool()) return;
+
/* Clear the depot from all order-lists */
RemoveOrderFromAllVehicles(OT_GOTO_DEPOT, this->index);
diff --git a/src/group.h b/src/group.h
index b4303e70c..e5c10a59f 100644
--- a/src/group.h
+++ b/src/group.h
@@ -29,8 +29,6 @@ struct Group : PoolItem<Group, GroupID, &_Group_pool> {
Group(StringID str = STR_NULL);
virtual ~Group();
- void QuickFree();
-
bool IsValid() const;
};
diff --git a/src/group_cmd.cpp b/src/group_cmd.cpp
index b8e68fbbf..3ac42e2fd 100644
--- a/src/group_cmd.cpp
+++ b/src/group_cmd.cpp
@@ -50,13 +50,8 @@ Group::Group(StringID str)
Group::~Group()
{
- this->QuickFree();
- this->string_id = STR_NULL;
-}
-
-void Group::QuickFree()
-{
DeleteName(this->string_id);
+ this->string_id = STR_NULL;
}
bool Group::IsValid() const
diff --git a/src/oldpool.cpp b/src/oldpool.cpp
index 3cc5c8391..df4731777 100644
--- a/src/oldpool.cpp
+++ b/src/oldpool.cpp
@@ -18,6 +18,7 @@ void OldMemoryPoolBase::CleanPool()
DEBUG(misc, 4, "[Pool] (%s) cleaning pool..", this->name);
+ this->cleaning_pool = true;
/* Free all blocks */
for (i = 0; i < this->current_blocks; i++) {
if (this->clean_block_proc != NULL) {
@@ -25,6 +26,7 @@ void OldMemoryPoolBase::CleanPool()
}
free(this->blocks[i]);
}
+ this->cleaning_pool = false;
/* Free the block itself */
free(this->blocks);
diff --git a/src/oldpool.h b/src/oldpool.h
index 38a373474..caeabccab 100644
--- a/src/oldpool.h
+++ b/src/oldpool.h
@@ -25,7 +25,7 @@ protected:
OldMemoryPoolNewBlock *new_block_proc, OldMemoryPoolCleanBlock *clean_block_proc) :
name(name), max_blocks(max_blocks), block_size_bits(block_size_bits),
new_block_proc(new_block_proc), clean_block_proc(clean_block_proc), current_blocks(0),
- total_items(0), item_size(item_size), first_free_index(0), blocks(NULL) {}
+ total_items(0), cleaning_pool(false), item_size(item_size), first_free_index(0), blocks(NULL) {}
const char* name; ///< Name of the pool (just for debugging)
@@ -40,6 +40,7 @@ protected:
uint current_blocks; ///< How many blocks we have in our pool
uint total_items; ///< How many items we now have in this pool
+ bool cleaning_pool; ///< Are we currently cleaning the pool?
public:
const uint item_size; ///< How many bytes one block is
uint first_free_index; ///< The index of the first free pool item in this pool
@@ -84,6 +85,15 @@ public:
{
return this->name;
}
+
+ /**
+ * Is the pool in the cleaning phase?
+ * @return true if it is
+ */
+ inline bool CleaningPool() const
+ {
+ return this->cleaning_pool;
+ }
};
template <typename T>
@@ -121,7 +131,6 @@ static void PoolNewBlock(uint start_item)
/**
* Generic function to free a new block in a pool.
- * This function uses QuickFree that is intended to only free memory that would be lost if the pool is freed.
* @param start_item the first item that needs to be cleaned
* @param end_item the last item that needs to be cleaned
*/
@@ -130,9 +139,7 @@ static void PoolCleanBlock(uint start_item, uint end_item)
{
for (uint i = start_item; i <= end_item; i++) {
T *t = Tpool->Get(i);
- if (t->IsValid()) {
- t->QuickFree();
- }
+ delete t;
}
}
@@ -157,15 +164,6 @@ struct PoolItem {
}
/**
- * Called on each object when the pool is being destroyed, so one
- * can free allocated memory without the need for freeing for
- * example orders.
- */
- virtual void QuickFree()
- {
- }
-
- /**
* An overriden version of new that allocates memory on the pool.
* @param size the size of the variable (unused)
* @return the memory that is 'allocated'
@@ -241,7 +239,7 @@ protected:
* Allocate a pool item; possibly allocate a new block in the pool.
* @return the allocated pool item (or NULL when the pool is full).
*/
- static T *AllocateRaw()
+ static inline T *AllocateRaw()
{
return AllocateRaw(Tpool->first_free_index);
}
@@ -251,7 +249,7 @@ protected:
* @param first the first pool item to start searching
* @return the allocated pool item (or NULL when the pool is full).
*/
- static T *AllocateRaw(uint &first)
+ static inline T *AllocateRaw(uint &first)
{
uint last_minus_one = Tpool->GetSize() - 1;
@@ -271,6 +269,15 @@ protected:
return NULL;
}
+
+ /**
+ * Are we cleaning this pool?
+ * @return true if we are
+ */
+ static inline bool CleaningPool()
+ {
+ return Tpool->CleaningPool();
+ }
};
diff --git a/src/signs.cpp b/src/signs.cpp
index 8e05f2c01..f8ad95f45 100644
--- a/src/signs.cpp
+++ b/src/signs.cpp
@@ -28,13 +28,8 @@ Sign::Sign(StringID string)
Sign::~Sign()
{
- this->QuickFree();
- this->str = STR_NULL;
-}
-
-void Sign::QuickFree()
-{
DeleteName(this->str);
+ this->str = STR_NULL;
}
/**
diff --git a/src/signs.h b/src/signs.h
index d33578807..05af404eb 100644
--- a/src/signs.h
+++ b/src/signs.h
@@ -27,8 +27,6 @@ struct Sign : PoolItem<Sign, SignID, &_Sign_pool> {
~Sign();
bool IsValid() const { return this->str != STR_NULL; }
-
- void QuickFree();
};
enum {
diff --git a/src/station.cpp b/src/station.cpp
index 4633f1d18..150719e8f 100644
--- a/src/station.cpp
+++ b/src/station.cpp
@@ -64,6 +64,11 @@ Station::~Station()
{
DEBUG(station, cDebugCtorLevel, "I-%3d", index);
+ DeleteName(this->string_id);
+ free(this->speclist);
+
+ if (CleaningPool()) return;
+
MarkDirty();
RebuildStationLists();
InvalidateWindowClasses(WC_STATION_LIST);
@@ -81,14 +86,6 @@ Station::~Station()
for (CargoID c = 0; c < NUM_CARGO; c++) {
goods[c].cargo.Truncate(0);
}
-
- this->QuickFree();
-}
-
-void Station::QuickFree()
-{
- DeleteName(this->string_id);
- free(this->speclist);
}
/** Called when new facility is built on the station. If it is the first facility
diff --git a/src/station.h b/src/station.h
index b6e3596be..866375a42 100644
--- a/src/station.h
+++ b/src/station.h
@@ -159,8 +159,6 @@ struct Station : PoolItem<Station, StationID, &_Station_pool> {
Station(TileIndex tile = 0);
virtual ~Station();
- void QuickFree();
-
void AddFacility(byte new_facility_bit, TileIndex facil_xy);
void MarkDirty() const;
void MarkTilesDirty(bool cargo_change) const;
diff --git a/src/town.h b/src/town.h
index bda85ff78..6d5707146 100644
--- a/src/town.h
+++ b/src/town.h
@@ -160,8 +160,6 @@ struct Town : PoolItem<Town, TownID, &_Town_pool> {
~Town();
bool IsValid() const { return this->xy != 0; }
-
- void QuickFree();
};
struct HouseSpec {
diff --git a/src/town_cmd.cpp b/src/town_cmd.cpp
index 4fa9a8c85..48b20ffc7 100644
--- a/src/town_cmd.cpp
+++ b/src/town_cmd.cpp
@@ -53,6 +53,10 @@ Town::Town(TileIndex tile)
Town::~Town()
{
+ DeleteName(this->townnametype);
+
+ if (CleaningPool()) return;
+
Industry *i;
/* Delete town authority window
@@ -87,15 +91,9 @@ Town::~Town()
MarkWholeScreenDirty();
- this->QuickFree();
this->xy = 0;
}
-void Town::QuickFree()
-{
- DeleteName(this->townnametype);
-}
-
// Local
static int _grow_town_result;
diff --git a/src/vehicle.cpp b/src/vehicle.cpp
index c845a00b0..78b857c35 100644
--- a/src/vehicle.cpp
+++ b/src/vehicle.cpp
@@ -564,6 +564,8 @@ bool IsEngineCountable(const Vehicle *v)
void Vehicle::PreDestructor()
{
+ if (CleaningPool()) return;
+
if (IsValidStationID(this->last_station_visited)) {
GetStation(this->last_station_visited)->loading_vehicles.remove(this);
@@ -579,7 +581,6 @@ void Vehicle::PreDestructor()
if (this->IsPrimaryVehicle()) DecreaseGroupNumVehicle(this->group_id);
}
- this->QuickFree();
if (this->type == VEH_ROAD) ClearSlot(this);
if (this->type != VEH_TRAIN || (this->type == VEH_TRAIN && (IsFrontEngine(this) || IsFreeWagon(this)))) {
@@ -599,6 +600,10 @@ void Vehicle::PreDestructor()
Vehicle::~Vehicle()
{
+ DeleteName(this->string_id);
+
+ if (CleaningPool()) return;
+
UpdateVehiclePosHash(this, INVALID_COORD, 0);
this->next_hash = NULL;
this->next_new_hash = NULL;
@@ -608,11 +613,6 @@ Vehicle::~Vehicle()
new (this) InvalidVehicle();
}
-void Vehicle::QuickFree()
-{
- DeleteName(this->string_id);
-}
-
/**
* Deletes all vehicles in a chain.
* @param v The first vehicle in the chain.
diff --git a/src/vehicle.h b/src/vehicle.h
index 743987763..63f4203ee 100644
--- a/src/vehicle.h
+++ b/src/vehicle.h
@@ -352,8 +352,6 @@ struct Vehicle : PoolItem<Vehicle, VehicleID, &_Vehicle_pool> {
/** We want to 'destruct' the right class. */
virtual ~Vehicle();
- void QuickFree();
-
void BeginLoading();
void LeaveStation();
diff --git a/src/waypoint.cpp b/src/waypoint.cpp
index 425c7a503..9847c9870 100644
--- a/src/waypoint.cpp
+++ b/src/waypoint.cpp
@@ -404,17 +404,14 @@ Waypoint::Waypoint(TileIndex tile)
Waypoint::~Waypoint()
{
+ if (this->string != STR_NULL) DeleteName(this->string);
+
+ if (CleaningPool()) return;
+
RemoveOrderFromAllVehicles(OT_GOTO_WAYPOINT, this->index);
RedrawWaypointSign(this);
this->xy = 0;
-
- this->QuickFree();
-}
-
-void Waypoint::QuickFree()
-{
- if (this->string != STR_NULL) DeleteName(this->string);
}
bool Waypoint::IsValid() const
diff --git a/src/waypoint.h b/src/waypoint.h
index af24b1906..4926d1313 100644
--- a/src/waypoint.h
+++ b/src/waypoint.h
@@ -30,8 +30,6 @@ struct Waypoint : PoolItem<Waypoint, WaypointID, &_Waypoint_pool> {
Waypoint(TileIndex tile = 0);
~Waypoint();
- void QuickFree();
-
bool IsValid() const;
};