285 lines
6.4 KiB
C++
285 lines
6.4 KiB
C++
/*************************************************************************/
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/* memory.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "memory.h"
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#include "error_macros.h"
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#include "copymem.h"
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#include <stdio.h>
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#include <stdlib.h>
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MID::MID(MemoryPoolDynamic::ID p_id) {
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data = (Data*)memalloc(sizeof(Data));
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data->refcount.init();
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data->id=p_id;
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}
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void MID::unref() {
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if (!data)
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return;
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if (data->refcount.unref()) {
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if (data->id!=MemoryPoolDynamic::INVALID_ID)
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MemoryPoolDynamic::get_singleton()->free(data->id);
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memfree(data);
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}
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data=NULL;
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}
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Error MID::_resize(size_t p_size) {
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if (p_size==0 && (!data || data->id==MemoryPoolDynamic::INVALID_ID))
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return OK;
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if (p_size && !data) {
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// create data because we'll need it
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data = (Data*)memalloc(sizeof(Data));
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ERR_FAIL_COND_V( !data,ERR_OUT_OF_MEMORY );
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data->refcount.init();
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data->id=MemoryPoolDynamic::INVALID_ID;
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}
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if (p_size==0 && data && data->id==MemoryPoolDynamic::INVALID_ID) {
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MemoryPoolDynamic::get_singleton()->free(data->id);
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data->id=MemoryPoolDynamic::INVALID_ID;
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}
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if (p_size>0) {
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if (data->id==MemoryPoolDynamic::INVALID_ID) {
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data->id=MemoryPoolDynamic::get_singleton()->alloc(p_size,"Unnamed MID");
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ERR_FAIL_COND_V( data->id==MemoryPoolDynamic::INVALID_ID, ERR_OUT_OF_MEMORY );
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} else {
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MemoryPoolDynamic::get_singleton()->realloc(data->id,p_size);
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ERR_FAIL_COND_V( data->id==MemoryPoolDynamic::INVALID_ID, ERR_OUT_OF_MEMORY );
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}
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}
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return OK;
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}
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void * operator new(size_t p_size,const char *p_description) {
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return Memory::alloc_static( p_size, false );
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}
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void * operator new(size_t p_size,void* (*p_allocfunc)(size_t p_size)) {
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return p_allocfunc(p_size);
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}
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#include <stdio.h>
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#ifdef DEBUG_ENABLED
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size_t Memory::mem_usage=0;
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size_t Memory::max_usage=0;
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#endif
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size_t Memory::alloc_count=0;
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void * Memory::alloc_static(size_t p_bytes,bool p_pad_align) {
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#ifdef DEBUG_ENABLED
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bool prepad=true;
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#else
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bool prepad=p_pad_align;
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#endif
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void * mem = malloc( p_bytes + (prepad?PAD_ALIGN:0));
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alloc_count++;
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ERR_FAIL_COND_V(!mem,NULL);
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if (prepad) {
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uint64_t *s = (uint64_t*)mem;
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*s=p_bytes;
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uint8_t *s8 = (uint8_t*)mem;
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#ifdef DEBUG_ENABLED
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mem_usage+=p_bytes;
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if (mem_usage>max_usage) {
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max_usage=mem_usage;
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}
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#endif
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return s8 + PAD_ALIGN;
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} else {
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return mem;
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}
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}
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void * Memory::realloc_static(void *p_memory,size_t p_bytes,bool p_pad_align) {
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if (p_memory==NULL) {
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return alloc_static(p_bytes,p_pad_align);
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}
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uint8_t *mem = (uint8_t*)p_memory;
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#ifdef DEBUG_ENABLED
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bool prepad=true;
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#else
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bool prepad=p_pad_align;
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#endif
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if (prepad) {
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mem-=PAD_ALIGN;
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uint64_t *s = (uint64_t*)mem;
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#ifdef DEBUG_ENABLED
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mem_usage-=*s;
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mem_usage+=p_bytes;
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#endif
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if (p_bytes==0) {
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free(mem);
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return NULL;
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} else {
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*s=p_bytes;
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mem = (uint8_t*)realloc(mem,p_bytes+PAD_ALIGN);
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ERR_FAIL_COND_V(!mem,NULL);
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s = (uint64_t*)mem;
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*s=p_bytes;
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return mem+PAD_ALIGN;
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}
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} else {
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mem = (uint8_t*)realloc(mem,p_bytes);
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ERR_FAIL_COND_V(mem==NULL && p_bytes>0,NULL);
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return mem;
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}
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}
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void Memory::free_static(void *p_ptr,bool p_pad_align) {
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ERR_FAIL_COND(p_ptr==NULL);
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uint8_t *mem = (uint8_t*)p_ptr;
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#ifdef DEBUG_ENABLED
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bool prepad=true;
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#else
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bool prepad=p_pad_align;
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#endif
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alloc_count--;
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if (prepad) {
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mem-=PAD_ALIGN;
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uint64_t *s = (uint64_t*)mem;
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#ifdef DEBUG_ENABLED
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mem_usage-=*s;
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#endif
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free(mem);
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} else {
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free(mem);
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}
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}
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size_t Memory::get_mem_available() {
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return 0xFFFFFFFFFFFFF;
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}
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size_t Memory::get_mem_usage(){
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#ifdef DEBUG_ENABLED
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return mem_usage;
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#else
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return 0;
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#endif
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}
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size_t Memory::get_mem_max_usage(){
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#ifdef DEBUG_ENABLED
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return max_usage;
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#else
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return 0;
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#endif
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}
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MID Memory::alloc_dynamic(size_t p_bytes, const char *p_descr) {
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MemoryPoolDynamic::ID id = MemoryPoolDynamic::get_singleton()->alloc(p_bytes,p_descr);
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return MID(id);
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}
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Error Memory::realloc_dynamic(MID p_mid,size_t p_bytes) {
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MemoryPoolDynamic::ID id = p_mid.data?p_mid.data->id:MemoryPoolDynamic::INVALID_ID;
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if (id==MemoryPoolDynamic::INVALID_ID)
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return ERR_INVALID_PARAMETER;
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return MemoryPoolDynamic::get_singleton()->realloc(p_mid, p_bytes);
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}
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size_t Memory::get_dynamic_mem_available() {
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return MemoryPoolDynamic::get_singleton()->get_available_mem();
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}
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size_t Memory::get_dynamic_mem_usage() {
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return MemoryPoolDynamic::get_singleton()->get_total_usage();
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}
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_GlobalNil::_GlobalNil() {
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color=1;
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left=this;
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right=this;
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parent=this;
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}
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_GlobalNil _GlobalNilClass::_nil;
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