/*************************************************************************/
/*  pool_vector.cpp                                                      */
/*************************************************************************/
/*                         This file is part of:                         */
/*                          PANDEMONIUM ENGINE                           */
/*             https://github.com/Relintai/pandemonium_engine            */
/*************************************************************************/
/* Copyright (c) 2022-present Péter Magyar.                              */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
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/*************************************************************************/

#include "pool_vector.h"

Mutex pool_vector_lock;

PoolAllocator *MemoryPool::memory_pool = nullptr;
uint8_t *MemoryPool::pool_memory = nullptr;
size_t *MemoryPool::pool_size = nullptr;

MemoryPool::Alloc *MemoryPool::allocs = nullptr;
MemoryPool::Alloc *MemoryPool::free_list = nullptr;
uint32_t MemoryPool::alloc_count = 0;
uint32_t MemoryPool::allocs_used = 0;
Mutex MemoryPool::alloc_mutex;

size_t MemoryPool::total_memory = 0;
size_t MemoryPool::max_memory = 0;

void MemoryPool::setup(uint32_t p_max_allocs) {
	allocs = memnew_arr(Alloc, p_max_allocs);
	alloc_count = p_max_allocs;
	allocs_used = 0;

	for (uint32_t i = 0; i < alloc_count - 1; i++) {
		allocs[i].free_list = &allocs[i + 1];
	}

	free_list = &allocs[0];
}

void MemoryPool::cleanup() {
	memdelete_arr(allocs);

	ERR_FAIL_COND_MSG(allocs_used > 0, "There are still MemoryPool allocs in use at exit!");
}