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PoolMemoryManager.cpp
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PoolMemoryManager.cpp
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#include "PoolMemoryManager.h"
#include "Complex.h"
PoolMemoryManager::PoolMemoryManager() {
head = 0;
expandPoolSize();
}
PoolMemoryManager::~PoolMemoryManager() {
cleanUp();
}
void* PoolMemoryManager::allocate(size_t size) {
if (0 == head) {
expandPoolSize();
}
Store* newStore = head;
head = newStore->next;
return newStore;
}
void PoolMemoryManager::freeMemory(void* pointer) {
Store* previous = static_cast <Store*> (pointer);
previous->next = head;
head = previous;
}
void PoolMemoryManager::expandPoolSize() {
//convert it for more class, not only complex
size_t size = (sizeof(Complex) > sizeof(Store*)) ?
sizeof(Complex) : sizeof(Store*);
Store* head2 = reinterpret_cast <Store*> (new char[size]);
head = head2;
for (int i = 0; i < POOLSIZE; i++) {
head2->next = reinterpret_cast <Store*> (new char[size]);
head2 = head2->next;
}
head2->next = 0;
}
void PoolMemoryManager::cleanUp() {
Store* nextPtr = head;
for (; nextPtr; nextPtr = head) {
head = head->next;
delete[] nextPtr; // remember this was a char array
}
}