mirror of https://gitlab.com/rnger/amath
266 lines
5.9 KiB
C
266 lines
5.9 KiB
C
/*-
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* Copyright (c) 2014-2017 Carsten Sonne Larsen <cs@innolan.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Project homepage:
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* https://amath.innolan.net
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*
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*/
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#include "amathc.h"
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#if defined(AMIGA)
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#include <stddef.h>
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#include <exec/types.h>
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#include <exec/memory.h>
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#include <exec/semaphores.h>
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#include <clib/exec_protos.h>
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#define ALLOC_MEM(x) AllocVec(x, MEMF_ANY | MEMF_CLEAR)
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#define FREE_MEM(x) FreeVec(x)
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#define Debug(x,y,z)
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#else
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#include <stdlib.h>
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#define ALLOC_MEM(x) calloc(1L,x)
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#define FREE_MEM(x) free(x)
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#define Debug(x,y,z)
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#endif
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#if defined(__x86_64__) || defined(__aarch64__) || \
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defined(_M_AMD64) || defined(_M_ARM64) || \
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defined(__powerpc64__)
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#define P64BIT
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#endif
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/**
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* @brief Block of allocated memory.
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*/
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struct MemoryBlock
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{
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struct MemoryBlock* next;
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size_t size;
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void* address;
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};
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/**
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* @brief List of allocated memory. Uses the LIFO principle.
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*/
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struct MemoryList
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{
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struct MemoryBlock* first;
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size_t peak;
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size_t size;
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long count;
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};
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/**
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* @brief Global list of allocated memory.
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*/
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struct MemoryList* list = nullptr;
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void alloc_error(char*, size_t);
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void dealloc_error(char*, void*);
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/**
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* @brief Allocate memory and add it to the global memory list.
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*/
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void* AllocMemSafe(size_t size)
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{
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struct MemoryBlock* newblock;
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size_t allocsize;
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if (list == nullptr)
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{
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list = (struct MemoryList*)ALLOC_MEM(sizeof(struct MemoryList));
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if (!list)
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{
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alloc_error("list", sizeof(struct MemoryList));
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return 0;
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}
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list->first = nullptr;
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list->peak = 0;
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list->size = 0;
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list->count = 0;
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}
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#ifdef P64BIT
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// Align to bytes of 8
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allocsize = (size + 7) & ~0x07;
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#else
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// Align to bytes of 4
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allocsize = (size + 3) & ~0x03;
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#endif
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newblock = (struct MemoryBlock*)ALLOC_MEM(sizeof(struct MemoryBlock));
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if (!newblock)
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{
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alloc_error("block", sizeof(struct MemoryBlock));
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return 0;
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}
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newblock->address = (struct MemoryBlock*)ALLOC_MEM(allocsize);
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if (!newblock->address)
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{
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FREE_MEM(newblock);
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alloc_error("memory", allocsize);
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return 0;
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}
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newblock->size = allocsize;
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newblock->next = list->first;
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list->first = newblock;
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list->size += allocsize;
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list->count++;
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if (list->size > list->peak)
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{
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list->peak = list->size;
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}
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// Memory allocated
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return newblock->address;
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}
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void RemoveMemSafe(void* block, bool deallocate)
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{
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struct MemoryBlock *current, *previous;
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if (list == nullptr || block == nullptr)
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{
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dealloc_error("list", 0);
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return;
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}
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if (block == nullptr)
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{
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dealloc_error("memory", 0);
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return;
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}
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previous = nullptr;
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current = list->first;
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while (current != nullptr && current->address != block)
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{
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previous = current;
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current = current->next;
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}
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if (current == nullptr)
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{
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dealloc_error("address not found", block);
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return;
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}
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if (previous == nullptr)
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{
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list->first = current->next;
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}
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else
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{
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previous->next = current->next;
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}
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list->size -= current->size;
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list->count--;
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if (deallocate)
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{
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FREE_MEM(current->address);
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}
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current->address = nullptr;
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current->next = nullptr;
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current->size = 0;
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FREE_MEM(current);
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}
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/**
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* @brief Deallocate memory from the global memory list.
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*/
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void FreeMemSafe(void* block)
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{
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RemoveMemSafe(block, true);
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}
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/**
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* @brief Detach an allocated memory from the global memory list.
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* @details The memory block is only detached, not deallocated.
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*/
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void DetachMemSafe(void* block)
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{
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RemoveMemSafe(block, false);
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}
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/**
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* @brief Deallocate all memory in the global memory list.
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*/
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void FreeAllSafe()
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{
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struct MemoryBlock *current, *next;
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if (list == nullptr)
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{
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return;
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}
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current = list->first;
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while (current != nullptr)
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{
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next = current->next;
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FREE_MEM(current->address);
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FREE_MEM(current);
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current = next;
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}
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FREE_MEM(list);
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list = nullptr;
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}
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/**
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* @brief Get memory usage in the global memory list.
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*/
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void MemUsage(long* blocks, long* size, long* peak)
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{
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*blocks = list->count;
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*size = (long)list->size;
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*peak = (long)list->peak;;
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}
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/**
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* @brief Log a memory allocation error
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*/
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void alloc_error(char* descr, size_t size)
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{
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Debug("Memory allocation error (%s) with size (%d)\n", descr, size);
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//if (size == 0)
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// exit(10);
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}
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/**
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* @brief Log a memory deallocation error
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*/
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void dealloc_error(char* descr, void* p)
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{
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Debug("Memory deallocation error (%s) address (%x)\n", descr, p);
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}
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