This commit is contained in:
blueloveTH 2023-04-09 17:20:54 +08:00
parent facc873856
commit 4de81edd4a
2 changed files with 75 additions and 68 deletions

View File

@ -4,70 +4,6 @@
namespace pkpy{
template <typename T>
struct shared_ptr {
int* counter;
T* _t() const noexcept { return (T*)(counter + 1); }
void _inc_counter() { if(counter) ++(*counter); }
void _dec_counter() { if(counter && --(*counter) == 0) {((T*)(counter + 1))->~T(); free(counter);} }
public:
shared_ptr() : counter(nullptr) {}
shared_ptr(int* counter) : counter(counter) {}
shared_ptr(const shared_ptr& other) : counter(other.counter) {
_inc_counter();
}
shared_ptr(shared_ptr&& other) noexcept : counter(other.counter) {
other.counter = nullptr;
}
~shared_ptr() { _dec_counter(); }
bool operator==(const shared_ptr& other) const { return counter == other.counter; }
bool operator!=(const shared_ptr& other) const { return counter != other.counter; }
bool operator<(const shared_ptr& other) const { return counter < other.counter; }
bool operator>(const shared_ptr& other) const { return counter > other.counter; }
bool operator<=(const shared_ptr& other) const { return counter <= other.counter; }
bool operator>=(const shared_ptr& other) const { return counter >= other.counter; }
bool operator==(std::nullptr_t) const { return counter == nullptr; }
bool operator!=(std::nullptr_t) const { return counter != nullptr; }
shared_ptr& operator=(const shared_ptr& other) {
_dec_counter();
counter = other.counter;
_inc_counter();
return *this;
}
shared_ptr& operator=(shared_ptr&& other) noexcept {
_dec_counter();
counter = other.counter;
other.counter = nullptr;
return *this;
}
T& operator*() const { return *_t(); }
T* operator->() const { return _t(); }
T* get() const { return _t(); }
int use_count() const {
return counter ? *counter : 0;
}
void reset(){
_dec_counter();
counter = nullptr;
}
};
template <typename T, typename... Args>
shared_ptr<T> make_sp(Args&&... args) {
int* p = (int*)malloc(sizeof(int) + sizeof(T));
*p = 1;
new(p+1) T(std::forward<Args>(args)...);
return shared_ptr<T>(p);
}
struct LinkedListNode{
LinkedListNode* prev;
LinkedListNode* next;
@ -301,4 +237,71 @@ inline MemoryPool<64> pool64;
inline MemoryPool<128> pool128;
// inline MemoryPool<256> pool256;
#define SP_MALLOC(size) pool64.alloc(size)
#define SP_FREE(p) pool64.dealloc(p)
template <typename T>
struct shared_ptr {
int* counter;
T* _t() const noexcept { return (T*)(counter + 1); }
void _inc_counter() { if(counter) ++(*counter); }
void _dec_counter() { if(counter && --(*counter) == 0) {((T*)(counter + 1))->~T(); SP_FREE(counter);} }
public:
shared_ptr() : counter(nullptr) {}
shared_ptr(int* counter) : counter(counter) {}
shared_ptr(const shared_ptr& other) : counter(other.counter) {
_inc_counter();
}
shared_ptr(shared_ptr&& other) noexcept : counter(other.counter) {
other.counter = nullptr;
}
~shared_ptr() { _dec_counter(); }
bool operator==(const shared_ptr& other) const { return counter == other.counter; }
bool operator!=(const shared_ptr& other) const { return counter != other.counter; }
bool operator<(const shared_ptr& other) const { return counter < other.counter; }
bool operator>(const shared_ptr& other) const { return counter > other.counter; }
bool operator<=(const shared_ptr& other) const { return counter <= other.counter; }
bool operator>=(const shared_ptr& other) const { return counter >= other.counter; }
bool operator==(std::nullptr_t) const { return counter == nullptr; }
bool operator!=(std::nullptr_t) const { return counter != nullptr; }
shared_ptr& operator=(const shared_ptr& other) {
_dec_counter();
counter = other.counter;
_inc_counter();
return *this;
}
shared_ptr& operator=(shared_ptr&& other) noexcept {
_dec_counter();
counter = other.counter;
other.counter = nullptr;
return *this;
}
T& operator*() const { return *_t(); }
T* operator->() const { return _t(); }
T* get() const { return _t(); }
int use_count() const {
return counter ? *counter : 0;
}
void reset(){
_dec_counter();
counter = nullptr;
}
};
template <typename T, typename... Args>
shared_ptr<T> make_sp(Args&&... args) {
int* p = (int*)SP_MALLOC(sizeof(int) + sizeof(T));
*p = 1;
new(p+1) T(std::forward<Args>(args)...);
return shared_ptr<T>(p);
}
}; // namespace pkpy

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@ -112,7 +112,11 @@ struct PyObject {
virtual void _obj_gc_mark() = 0;
PyObject(Type type) : type(type) {}
virtual ~PyObject() { delete _attr; }
virtual ~PyObject() {
if(_attr == nullptr) return;
_attr->~NameDict();
pool64.dealloc(_attr);
}
};
template<typename T>
@ -127,11 +131,11 @@ struct Py_ : PyObject {
void _init() noexcept {
if constexpr (std::is_same_v<T, Type> || std::is_same_v<T, DummyModule>) {
_attr = new NameDict(8, kTypeAttrLoadFactor);
_attr = new(pool64.alloc<NameDict>()) NameDict(8, kTypeAttrLoadFactor);
}else if constexpr(std::is_same_v<T, DummyInstance>){
_attr = new NameDict(8, kInstAttrLoadFactor);
_attr = new(pool64.alloc<NameDict>()) NameDict(8, kInstAttrLoadFactor);
}else if constexpr(std::is_same_v<T, Function> || std::is_same_v<T, NativeFunc>){
_attr = new NameDict(8, kInstAttrLoadFactor);
_attr = new(pool64.alloc<NameDict>()) NameDict(8, kInstAttrLoadFactor);
}else{
_attr = nullptr;
}