GameObjectPool fixes

src/Game/GameObject.cpp

@@ -11,10 +11,19 @@ GameObject::GameObject(Mono::Object managed_obj, GameObject *parent)
     : object_handle(managed_obj), parent(parent) 
 {}
 
-GameObject &GameObject::operator=(GameObject &&o){ 
+GameObject::GameObject(GameObject &&o) :
+    transform(o.transform),
+    components(std::move(o.components)),
+    object_handle(std::move(o.object_handle)),
+    parent(o.parent)
+{
+}
+
+GameObject &GameObject::operator=(GameObject &&o){
     transform = o.transform;
     components = std::move(o.components);
     object_handle = std::move(o.object_handle);
+    parent = o.parent;
     return *this;
 }
 

src/Game/GameObject.hpp

@@ -32,10 +32,15 @@ class GameObject {
     GameObject* parent;
 public:
     GameObject(Mono::Object managed_obj, GameObject* parent);
+    GameObject(const GameObject& o) = delete;
+    GameObject(GameObject&& o);
     
     GameObject& operator=(GameObject&& o);
 
-    inline Transform& getTransform(){ return transform; }
+    inline Transform& getTransform() { return transform; }
+    inline const Transform& getTransform() const { return transform; }
+    inline Mono::ObjectHandle& getObjectHandle() { return object_handle; }
+    inline const Mono::ObjectHandle& getObjectHandle() const { return object_handle; }
     bool tryGetComponent(const std::u16string& name, Component** out_component);
     bool tryAddComponent(const std::u16string& name, Component&& component);
 };

src/Game/GameObjectPool.cpp

@@ -9,7 +9,7 @@ GameObjectPool::GameObjectPool(u32 size)
     first_unused_index = 0;
     buffer = new char[size*sizeof(GameObject)];
     used_indices = new u64[size/64];
-    std::memset(buffer, 0, size*sizeof(GameObject));
+    // std::memset(buffer, 0, size*sizeof(GameObject));
     std::memset(used_indices, 0, size/8);
 }
 
@@ -26,7 +26,7 @@ GameObjectPool::~GameObjectPool()
 
 bool GameObjectPool::isIndexUsed(u32 index)
 {
-    return ( used_indices[index/64] & (1<<(index%64)) ) != 0;
+    return ( used_indices[index/64] & (u64(1)<<(index%64)) ) != 0;
 }
 
 u32 GameObjectPool::getNearestUnusedIndex(u32 startIndex)
@@ -38,7 +38,7 @@ u32 GameObjectPool::getNearestUnusedIndex(u32 startIndex)
     
     u32 i = startIndex/64;
     // mark previous bits as used
-    u64 u = used_indices[i] | ( (1<<startIndex%64) -1 );
+    u64 u = used_indices[i] | ( (u64(1)<<startIndex%64) -1 );
     while(u == u64(-1)){
         i++;
         if(i == size/64)
@@ -61,7 +61,7 @@ u32 GameObjectPool::getNearestUsedIndex(u32 startIndex)
     
     u32 i = startIndex/64;
     // mark previous bits as unused
-    u64 u = used_indices[i] & !( (1<<startIndex%64) -1 );
+    u64 u = used_indices[i] & !( (u64(1)<<startIndex%64) -1 );
     while(u == 0){
         i++;
         if(i == size/64)
@@ -84,25 +84,25 @@ GameObject& GameObjectPool::get(u32 index)
     return ((GameObject*)buffer)[index];
 }
 
-std::pair<u32, GameObject&> GameObjectPool::put_new(GameObject&& new_obj)
+std::pair<u32, GameObject&> GameObjectPool::emplace(GameObject&& new_obj)
 {
     u32 i = first_unused_index;
-    if(i == (u32)-1)
+    if(i == u32(-1))
         throw UsefulException("can't put new GameObject to GameObjectPool because it's full");
     GameObject& r = ( ((GameObject*)buffer)[i] = std::move(new_obj) );
-    used_indices[i] |= 1<<(i%64); // mark index bit as used
+    used_indices[i/64] |= u64(1)<<(i%64); // mark index bit as used
     first_unused_index = getNearestUnusedIndex(i+1);
     return std::pair<u32, GameObject&>(i, r);
 }
 
-void GameObjectPool::remove(u32 index)
+void GameObjectPool::erase(u32 index)
 {
     if(index >= size)
         throw UsefulException(format("index %i is out of size %i", index, size));
     if(!isIndexUsed(index))
         throw UsefulException(format("there is no object at index %i", index));
     ((GameObject*)buffer)[index].~GameObject();
-    used_indices[index/64] ^= ~(1<<(index%64)); // mark index bit as unused
+    used_indices[index/64] &= ~(u64(1)<<(index%64)); // mark index bit as unused
     if(index < first_unused_index)
         first_unused_index = index;
 }

src/Game/GameObjectPool.hpp

@@ -1,5 +1,32 @@
 #include "GameObject.hpp"
 
+/*
+Fixed array stkring deleted elements indices as bits in array of u64.
+Fast emplace, erase and lookup. 
+
+------------------------[construct]------------------------
+operation 'GameObjectPool::GameObjectPool()' took 1.0549 ms
+operation 'other_collections_construct' took 0.0133 ms
+-------------------------[emplace]-------------------------
+operation 'GameObjectPool::emplace' took 8.0557 ms
+operation 'vector::emplace_back' took 11.3735 ms
+operation 'set::emplace' took 80.5633 ms
+operation 'list::emplace_front' took 18.1442 ms
+operation 'forward_list::emplace_front' took 11.5467 ms
+--------------------------[erase]--------------------------
+operation 'GameObjectPool::erase' took 0.2745 ms
+operation 'vector::erase' took 15790.6 ms
+operation 'set::erase' took 1.2697 ms
+operation 'list::erase_after' took 0.93 ms
+operation 'forward_list::erase_after' took 1.1127 ms
+-------------------------[iterate]-------------------------
+operation 'GameObjectPool::iterate' took 1.1166 ms
+operation 'vector::iterate' took 0.8883 ms
+operation 'set::iterate' took 2.8011 ms
+operation 'list::iterate' took 2.0766 ms
+operation 'forward_list::iterate' took 2.0823 ms
+*/
+
 class GameObjectPool {
     void* buffer;
     u64* used_indices;
@@ -9,16 +36,14 @@ class GameObjectPool {
     bool isIndexUsed(u32 index);
     u32 getNearestUnusedIndex(u32 startIndex);
     u32 getNearestUsedIndex(u32 startIndex);
-
-    friend class iterator;
 public:
 
     ///@param size must be a multiple of 64
     GameObjectPool(u32 size);
     ~GameObjectPool();
     GameObject& get(u32 index);
-    std::pair<u32, GameObject&> put_new(GameObject&& new_obj);
-    void remove(u32 index);
+    std::pair<u32, GameObject&> emplace(GameObject&& new_obj);
+    void erase(u32 index);
 
     class iterator {
         GameObjectPool* p;
@@ -34,4 +59,6 @@ public:
 
     inline iterator begin() { return iterator(this, 0); }
     inline iterator end() { return iterator(this, -1); }
+    
+    friend class iterator;
 };

src/Mono/Mono.hpp

@@ -128,13 +128,12 @@ class ObjectHandle {
     Object object;
     u32 gc_handle;
 public:
+    inline ObjectHandle() : object(nullptr), gc_handle(0) {}
     inline ObjectHandle(Object obj) : object(obj) { gc_handle = mono_gchandle_new(obj, false); }
     inline ObjectHandle(const ObjectHandle& o) = delete;
-    inline ObjectHandle(ObjectHandle&& o) {
-        object = o.object;
-        gc_handle = o.gc_handle;
-        o.gc_handle = 0;
-    };
+    inline ObjectHandle(ObjectHandle&& o) 
+        : object(o.object), gc_handle(o.gc_handle) 
+    { o.gc_handle = 0; };
     inline ObjectHandle& operator=(ObjectHandle&& o) {
         object = o.object;
         gc_handle = o.gc_handle;
@@ -142,7 +141,8 @@ public:
         return *this;
     };
     inline ~ObjectHandle() { if(gc_handle) mono_gchandle_free(gc_handle); }
-    inline Object getObject() { return object; }
+    inline Object getObject() const { return object; }
+    inline u32 getGCHandle() const { return gc_handle; }
 };
 
 }

src/main.cpp

@@ -8,11 +8,22 @@
 #include "UsefulException.hpp"
 #include "Mono/Mono.hpp"
 #include "Game/GameObjectPool.hpp"
-#include <bitset>
-#include <bit>
 
 using namespace ougge;
 
+#define GAMEOBJECTPOOL_SIZE 64*1024
+
+#define optime(N, LABEL, CODE) {\
+    nsec_t b = getMonotonicTimeNsec();\
+    for(u32 i = 0; i < (u32)N; i++) {\
+        CODE ;\
+    }\
+    nsec_t e = getMonotonicTimeNsec();\
+    nsec_t t = e-b;\
+    std::cout<<"operation '"<<LABEL<<"' took "<<t/1e6f<<" ms"<<std::endl;\
+}\
+
+
 std::vector<GUI::UpdateFunc_t> updateCallbacks;
 
 void update(f64 deltaTime){
@@ -28,15 +39,16 @@ int main(int argc, const char** argv){
         
         Mono::RuntimeJIT mono;
         std::cout<<"initialized mono jit runtime"<<std::endl;
-        GameObjectPool p(64*512);
+        GameObjectPool p(GAMEOBJECTPOOL_SIZE);
 
         auto a = mono.loadAssembly("Ougge.dll");
         auto gameObjectClass = a->getClass("Ougge", "GameObject");
-        for(int i = 0; i < 32*1024; i++){
+        for(int i = 0; i < GAMEOBJECTPOOL_SIZE; i++){
             Mono::Object gameObjectManaged = mono_object_new(mono.getDomain(), gameObjectClass);
-            p.put_new(GameObject(gameObjectManaged, nullptr));
+            p.emplace(GameObject(gameObjectManaged, nullptr));
             GameObject& o = p.get(0);
-            std::cout<<'['<<i<<"] "<<o.getTransform()<<std::endl;
+            if(i+1 % 8192 == 0)
+                std::cout<<'['<<i<<"] "<<o.getTransform()<<std::endl;
         }
         return 0;