677 lines
13 KiB
C++
677 lines
13 KiB
C++
/*************************************************************************/
|
|
/* dvector.h */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* http://www.godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
#ifndef DVECTOR_H
|
|
#define DVECTOR_H
|
|
|
|
#include "os/memory.h"
|
|
#include "os/copymem.h"
|
|
#include "pool_allocator.h"
|
|
#include "safe_refcount.h"
|
|
#include "os/rw_lock.h"
|
|
#include "ustring.h"
|
|
|
|
struct MemoryPool {
|
|
|
|
//avoid accessing these directly, must be public for template access
|
|
|
|
static PoolAllocator *memory_pool;
|
|
static uint8_t *pool_memory;
|
|
static size_t *pool_size;
|
|
|
|
|
|
struct Alloc {
|
|
|
|
SafeRefCount refcount;
|
|
uint32_t lock;
|
|
void *mem;
|
|
PoolAllocator::ID pool_id;
|
|
size_t size;
|
|
|
|
Alloc *free_list;
|
|
|
|
Alloc() { mem=NULL; lock=0; pool_id=POOL_ALLOCATOR_INVALID_ID; size=0; free_list=NULL; }
|
|
};
|
|
|
|
|
|
static Alloc *allocs;
|
|
static Alloc *free_list;
|
|
static uint32_t alloc_count;
|
|
static uint32_t allocs_used;
|
|
static Mutex *alloc_mutex;
|
|
static size_t total_memory;
|
|
static size_t max_memory;
|
|
|
|
|
|
static void setup(uint32_t p_max_allocs=(1<<16));
|
|
static void cleanup();
|
|
};
|
|
|
|
|
|
/**
|
|
@author Juan Linietsky <reduzio@gmail.com>
|
|
*/
|
|
|
|
|
|
template<class T>
|
|
class PoolVector {
|
|
|
|
MemoryPool::Alloc *alloc;
|
|
|
|
|
|
void _copy_on_write() {
|
|
|
|
|
|
if (!alloc)
|
|
return;
|
|
|
|
// ERR_FAIL_COND(alloc->lock>0); should not be illegal to lock this for copy on write, as it's a copy on write after all
|
|
|
|
if (alloc->refcount.get()==1)
|
|
return; //nothing to do
|
|
|
|
|
|
//must allocate something
|
|
|
|
MemoryPool::alloc_mutex->lock();
|
|
if (MemoryPool::allocs_used==MemoryPool::alloc_count) {
|
|
MemoryPool::alloc_mutex->unlock();
|
|
ERR_EXPLAINC("All memory pool allocations are in use, can't COW.");
|
|
ERR_FAIL();
|
|
}
|
|
|
|
MemoryPool::Alloc *old_alloc = alloc;
|
|
|
|
//take one from the free list
|
|
alloc = MemoryPool::free_list;
|
|
MemoryPool::free_list = alloc->free_list;
|
|
//increment the used counter
|
|
MemoryPool::allocs_used++;
|
|
|
|
//copy the alloc data
|
|
alloc->size=old_alloc->size;
|
|
alloc->refcount.init();
|
|
alloc->pool_id=POOL_ALLOCATOR_INVALID_ID;
|
|
alloc->lock=0;
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
MemoryPool::total_memory+=alloc->size;
|
|
if (MemoryPool::total_memory>MemoryPool::max_memory) {
|
|
MemoryPool::max_memory=MemoryPool::total_memory;
|
|
}
|
|
#endif
|
|
|
|
MemoryPool::alloc_mutex->unlock();
|
|
|
|
|
|
if (MemoryPool::memory_pool) {
|
|
|
|
|
|
} else {
|
|
alloc->mem = memalloc( alloc->size );
|
|
}
|
|
|
|
{
|
|
Write w;
|
|
w._ref(alloc);
|
|
Read r;
|
|
r._ref(old_alloc);
|
|
|
|
int cur_elements = alloc->size/sizeof(T);
|
|
T*dst = (T*)w.ptr();
|
|
const T*src = (const T*)r.ptr();
|
|
for(int i=0;i<cur_elements;i++) {
|
|
memnew_placement(&dst[i],T(src[i]));
|
|
}
|
|
}
|
|
|
|
|
|
if (old_alloc->refcount.unref()==true) {
|
|
//this should never happen but..
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
MemoryPool::alloc_mutex->lock();
|
|
MemoryPool::total_memory-=old_alloc->size;
|
|
MemoryPool::alloc_mutex->unlock();
|
|
#endif
|
|
|
|
{
|
|
Write w;
|
|
w._ref(old_alloc);
|
|
|
|
int cur_elements = old_alloc->size/sizeof(T);
|
|
T*elems = (T*)w.ptr();
|
|
for(int i=0;i<cur_elements;i++) {
|
|
elems[i].~T();
|
|
}
|
|
|
|
}
|
|
|
|
if (MemoryPool::memory_pool) {
|
|
//resize memory pool
|
|
//if none, create
|
|
//if some resize
|
|
} else {
|
|
|
|
|
|
memfree( old_alloc->mem );
|
|
old_alloc->mem=NULL;
|
|
old_alloc->size=0;
|
|
|
|
|
|
MemoryPool::alloc_mutex->lock();
|
|
old_alloc->free_list=MemoryPool::free_list;
|
|
MemoryPool::free_list=old_alloc;
|
|
MemoryPool::allocs_used--;
|
|
MemoryPool::alloc_mutex->unlock();
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
void _reference( const PoolVector& p_dvector ) {
|
|
|
|
if (alloc==p_dvector.alloc)
|
|
return;
|
|
|
|
_unreference();
|
|
|
|
if (!p_dvector.alloc) {
|
|
return;
|
|
}
|
|
|
|
if (p_dvector.alloc->refcount.ref()) {
|
|
alloc=p_dvector.alloc;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
void _unreference() {
|
|
|
|
if (!alloc)
|
|
return;
|
|
|
|
if (alloc->refcount.unref()==false) {
|
|
alloc=NULL;
|
|
return;
|
|
}
|
|
|
|
//must be disposed!
|
|
|
|
{
|
|
int cur_elements = alloc->size/sizeof(T);
|
|
Write w = write();
|
|
|
|
for (int i=0;i<cur_elements;i++) {
|
|
|
|
w[i].~T();
|
|
}
|
|
|
|
}
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
MemoryPool::alloc_mutex->lock();
|
|
MemoryPool::total_memory-=alloc->size;
|
|
MemoryPool::alloc_mutex->unlock();
|
|
#endif
|
|
|
|
|
|
if (MemoryPool::memory_pool) {
|
|
//resize memory pool
|
|
//if none, create
|
|
//if some resize
|
|
} else {
|
|
|
|
memfree( alloc->mem );
|
|
alloc->mem=NULL;
|
|
alloc->size=0;
|
|
|
|
|
|
MemoryPool::alloc_mutex->lock();
|
|
alloc->free_list=MemoryPool::free_list;
|
|
MemoryPool::free_list=alloc;
|
|
MemoryPool::allocs_used--;
|
|
MemoryPool::alloc_mutex->unlock();
|
|
|
|
}
|
|
|
|
alloc=NULL;
|
|
}
|
|
|
|
public:
|
|
|
|
class Access {
|
|
friend class PoolVector;
|
|
protected:
|
|
MemoryPool::Alloc *alloc;
|
|
T * mem;
|
|
|
|
_FORCE_INLINE_ void _ref(MemoryPool::Alloc *p_alloc) {
|
|
alloc=p_alloc;
|
|
if (alloc) {
|
|
if (atomic_increment(&alloc->lock)==1) {
|
|
if (MemoryPool::memory_pool) {
|
|
//lock it and get mem
|
|
}
|
|
}
|
|
|
|
mem = (T*)alloc->mem;
|
|
}
|
|
}
|
|
|
|
_FORCE_INLINE_ void _unref() {
|
|
|
|
|
|
if (alloc) {
|
|
if (atomic_decrement(&alloc->lock)==0) {
|
|
if (MemoryPool::memory_pool) {
|
|
//put mem back
|
|
}
|
|
}
|
|
|
|
mem = NULL;
|
|
alloc=NULL;
|
|
}
|
|
|
|
|
|
}
|
|
|
|
Access() {
|
|
alloc=NULL;
|
|
mem=NULL;
|
|
}
|
|
|
|
|
|
public:
|
|
virtual ~Access() {
|
|
_unref();
|
|
}
|
|
};
|
|
|
|
class Read : public Access {
|
|
public:
|
|
|
|
_FORCE_INLINE_ const T& operator[](int p_index) const { return this->mem[p_index]; }
|
|
_FORCE_INLINE_ const T *ptr() const { return this->mem; }
|
|
|
|
void operator=(const Read& p_read) {
|
|
if (this->alloc==p_read.alloc)
|
|
return;
|
|
this->_unref();
|
|
this->_ref(p_read.alloc);
|
|
}
|
|
|
|
Read(const Read& p_read) {
|
|
this->_ref(p_read.alloc);
|
|
}
|
|
|
|
Read() {}
|
|
|
|
|
|
};
|
|
|
|
class Write : public Access {
|
|
public:
|
|
|
|
_FORCE_INLINE_ T& operator[](int p_index) const { return this->mem[p_index]; }
|
|
_FORCE_INLINE_ T *ptr() const { return this->mem; }
|
|
|
|
void operator=(const Write& p_read) {
|
|
if (this->alloc==p_read.alloc)
|
|
return;
|
|
this->_unref();
|
|
this->_ref(p_read.alloc);
|
|
}
|
|
|
|
Write(const Write& p_read) {
|
|
this->_ref(p_read.alloc);
|
|
}
|
|
|
|
Write() {}
|
|
|
|
};
|
|
|
|
|
|
Read read() const {
|
|
|
|
Read r;
|
|
if (alloc) {
|
|
r._ref(alloc);
|
|
}
|
|
return r;
|
|
|
|
}
|
|
Write write() {
|
|
|
|
Write w;
|
|
if (alloc) {
|
|
_copy_on_write(); //make sure there is only one being acessed
|
|
w._ref(alloc);
|
|
}
|
|
return w;
|
|
}
|
|
|
|
template<class MC>
|
|
void fill_with(const MC& p_mc) {
|
|
|
|
|
|
int c=p_mc.size();
|
|
resize(c);
|
|
Write w=write();
|
|
int idx=0;
|
|
for(const typename MC::Element *E=p_mc.front();E;E=E->next()) {
|
|
|
|
w[idx++]=E->get();
|
|
}
|
|
}
|
|
|
|
|
|
void remove(int p_index) {
|
|
|
|
int s = size();
|
|
ERR_FAIL_INDEX(p_index, s);
|
|
Write w = write();
|
|
for (int i=p_index; i<s-1; i++) {
|
|
|
|
w[i]=w[i+1];
|
|
};
|
|
w = Write();
|
|
resize(s-1);
|
|
}
|
|
|
|
inline int size() const;
|
|
T get(int p_index) const;
|
|
void set(int p_index, const T& p_val);
|
|
void push_back(const T& p_val);
|
|
void append(const T& p_val) { push_back(p_val); }
|
|
void append_array(const PoolVector<T>& p_arr) {
|
|
int ds = p_arr.size();
|
|
if (ds==0)
|
|
return;
|
|
int bs = size();
|
|
resize( bs + ds);
|
|
Write w = write();
|
|
Read r = p_arr.read();
|
|
for(int i=0;i<ds;i++)
|
|
w[bs+i]=r[i];
|
|
}
|
|
|
|
PoolVector<T> subarray(int p_from, int p_to) {
|
|
|
|
if (p_from<0) {
|
|
p_from=size()+p_from;
|
|
}
|
|
if (p_to<0) {
|
|
p_to=size()+p_to;
|
|
}
|
|
if (p_from<0 || p_from>=size()) {
|
|
PoolVector<T>& aux=*((PoolVector<T>*)0); // nullreturn
|
|
ERR_FAIL_COND_V(p_from<0 || p_from>=size(),aux)
|
|
}
|
|
if (p_to<0 || p_to>=size()) {
|
|
PoolVector<T>& aux=*((PoolVector<T>*)0); // nullreturn
|
|
ERR_FAIL_COND_V(p_to<0 || p_to>=size(),aux)
|
|
}
|
|
|
|
PoolVector<T> slice;
|
|
int span=1 + p_to - p_from;
|
|
slice.resize(span);
|
|
Read r = read();
|
|
Write w = slice.write();
|
|
for (int i=0; i<span; ++i) {
|
|
w[i] = r[p_from+i];
|
|
}
|
|
|
|
return slice;
|
|
}
|
|
|
|
Error insert(int p_pos,const T& p_val) {
|
|
|
|
int s=size();
|
|
ERR_FAIL_INDEX_V(p_pos,s+1,ERR_INVALID_PARAMETER);
|
|
resize(s+1);
|
|
{
|
|
Write w = write();
|
|
for (int i=s;i>p_pos;i--)
|
|
w[i]=w[i-1];
|
|
w[p_pos]=p_val;
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
String join(String delimiter) {
|
|
String rs = "";
|
|
int s = size();
|
|
Read r = read();
|
|
for(int i=0;i<s;i++) {
|
|
rs += r[i] + delimiter;
|
|
}
|
|
rs.erase( rs.length()-delimiter.length(), delimiter.length());
|
|
return rs;
|
|
}
|
|
|
|
bool is_locked() const { return alloc && alloc->lock>0; }
|
|
|
|
inline const T operator[](int p_index) const;
|
|
|
|
Error resize(int p_size);
|
|
|
|
void invert();
|
|
|
|
void operator=(const PoolVector& p_dvector) { _reference(p_dvector); }
|
|
PoolVector() { alloc=NULL; }
|
|
PoolVector(const PoolVector& p_dvector) { alloc=NULL; _reference(p_dvector); }
|
|
~PoolVector() { _unreference(); }
|
|
|
|
};
|
|
|
|
template<class T>
|
|
int PoolVector<T>::size() const {
|
|
|
|
return alloc ? alloc->size/sizeof(T) : 0;
|
|
}
|
|
|
|
template<class T>
|
|
T PoolVector<T>::get(int p_index) const {
|
|
|
|
return operator[](p_index);
|
|
}
|
|
|
|
template<class T>
|
|
void PoolVector<T>::set(int p_index, const T& p_val) {
|
|
|
|
if (p_index<0 || p_index>=size()) {
|
|
ERR_FAIL_COND(p_index<0 || p_index>=size());
|
|
}
|
|
|
|
Write w = write();
|
|
w[p_index]=p_val;
|
|
}
|
|
|
|
template<class T>
|
|
void PoolVector<T>::push_back(const T& p_val) {
|
|
|
|
resize( size() + 1 );
|
|
set( size() -1, p_val );
|
|
}
|
|
|
|
template<class T>
|
|
const T PoolVector<T>::operator[](int p_index) const {
|
|
|
|
if (p_index<0 || p_index>=size()) {
|
|
T& aux=*((T*)0); //nullreturn
|
|
ERR_FAIL_COND_V(p_index<0 || p_index>=size(),aux);
|
|
}
|
|
|
|
Read r = read();
|
|
|
|
return r[p_index];
|
|
}
|
|
|
|
|
|
template<class T>
|
|
Error PoolVector<T>::resize(int p_size) {
|
|
|
|
|
|
if (alloc==NULL) {
|
|
|
|
if (p_size==0)
|
|
return OK; //nothing to do here
|
|
|
|
//must allocate something
|
|
MemoryPool::alloc_mutex->lock();
|
|
if (MemoryPool::allocs_used==MemoryPool::alloc_count) {
|
|
MemoryPool::alloc_mutex->unlock();
|
|
ERR_EXPLAINC("All memory pool allocations are in use.");
|
|
ERR_FAIL_V(ERR_OUT_OF_MEMORY);
|
|
}
|
|
|
|
//take one from the free list
|
|
alloc = MemoryPool::free_list;
|
|
MemoryPool::free_list = alloc->free_list;
|
|
//increment the used counter
|
|
MemoryPool::allocs_used++;
|
|
|
|
//cleanup the alloc
|
|
alloc->size=0;
|
|
alloc->refcount.init();
|
|
alloc->pool_id=POOL_ALLOCATOR_INVALID_ID;
|
|
MemoryPool::alloc_mutex->unlock();
|
|
|
|
} else {
|
|
|
|
ERR_FAIL_COND_V( alloc->lock>0, ERR_LOCKED ); //can't resize if locked!
|
|
}
|
|
|
|
size_t new_size = sizeof(T)*p_size;
|
|
|
|
if (alloc->size==new_size)
|
|
return OK; //nothing to do
|
|
|
|
if (p_size == 0 ) {
|
|
_unreference();
|
|
return OK;
|
|
}
|
|
|
|
_copy_on_write(); // make it unique
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
MemoryPool::alloc_mutex->lock();
|
|
MemoryPool::total_memory-=alloc->size;
|
|
MemoryPool::total_memory+=new_size;
|
|
if (MemoryPool::total_memory>MemoryPool::max_memory) {
|
|
MemoryPool::max_memory=MemoryPool::total_memory;
|
|
}
|
|
MemoryPool::alloc_mutex->unlock();
|
|
#endif
|
|
|
|
|
|
int cur_elements = alloc->size / sizeof(T);
|
|
|
|
if (p_size > cur_elements ) {
|
|
|
|
if (MemoryPool::memory_pool) {
|
|
//resize memory pool
|
|
//if none, create
|
|
//if some resize
|
|
} else {
|
|
|
|
if (alloc->size==0) {
|
|
alloc->mem = memalloc( new_size );
|
|
} else {
|
|
alloc->mem = memrealloc( alloc->mem, new_size );
|
|
}
|
|
}
|
|
|
|
alloc->size=new_size;
|
|
|
|
Write w = write();
|
|
|
|
for (int i=cur_elements;i<p_size;i++) {
|
|
|
|
memnew_placement(&w[i], T );
|
|
}
|
|
|
|
|
|
} else {
|
|
|
|
{
|
|
Write w = write();
|
|
for (int i=p_size;i<cur_elements;i++) {
|
|
|
|
w[i].~T();
|
|
}
|
|
|
|
}
|
|
|
|
if (MemoryPool::memory_pool) {
|
|
//resize memory pool
|
|
//if none, create
|
|
//if some resize
|
|
} else {
|
|
|
|
if (new_size==0) {
|
|
memfree( alloc->mem );
|
|
alloc->mem=NULL;
|
|
alloc->size=0;
|
|
|
|
MemoryPool::alloc_mutex->lock();
|
|
alloc->free_list=MemoryPool::free_list;
|
|
MemoryPool::free_list=alloc;
|
|
MemoryPool::allocs_used--;
|
|
MemoryPool::alloc_mutex->unlock();
|
|
|
|
} else {
|
|
alloc->mem = memrealloc( alloc->mem, new_size );
|
|
alloc->size=new_size;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
template<class T>
|
|
void PoolVector<T>::invert() {
|
|
T temp;
|
|
Write w = write();
|
|
int s = size();
|
|
int half_s = s/2;
|
|
|
|
for(int i=0;i<half_s;i++) {
|
|
temp = w[i];
|
|
w[i] = w[s-i-1];
|
|
w[s-i-1] = temp;
|
|
}
|
|
}
|
|
|
|
#endif
|