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d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
201 lines
5.3 KiB
C++
201 lines
5.3 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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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 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 "core/error/error_macros.h"
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#include "core/templates/safe_refcount.h"
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#include <stdio.h>
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#include <stdlib.h>
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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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#ifdef _MSC_VER
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void operator delete(void *p_mem, const char *p_description) {
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CRASH_NOW_MSG("Call to placement delete should not happen.");
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}
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void operator delete(void *p_mem, void *(*p_allocfunc)(size_t p_size)) {
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CRASH_NOW_MSG("Call to placement delete should not happen.");
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}
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void operator delete(void *p_mem, void *p_pointer, size_t check, const char *p_description) {
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CRASH_NOW_MSG("Call to placement delete should not happen.");
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}
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#endif
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#ifdef DEBUG_ENABLED
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SafeNumeric<uint64_t> Memory::mem_usage;
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SafeNumeric<uint64_t> Memory::max_usage;
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#endif
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SafeNumeric<uint64_t> Memory::alloc_count;
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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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ERR_FAIL_COND_V(!mem, nullptr);
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alloc_count.increment();
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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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uint64_t new_mem_usage = mem_usage.add(p_bytes);
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max_usage.exchange_if_greater(new_mem_usage);
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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 == nullptr) {
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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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if (p_bytes > *s) {
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uint64_t new_mem_usage = mem_usage.add(p_bytes - *s);
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max_usage.exchange_if_greater(new_mem_usage);
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} else {
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mem_usage.sub(*s - p_bytes);
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}
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#endif
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if (p_bytes == 0) {
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free(mem);
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return nullptr;
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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, nullptr);
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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 == nullptr && p_bytes > 0, nullptr);
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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 == nullptr);
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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.decrement();
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if (prepad) {
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mem -= PAD_ALIGN;
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#ifdef DEBUG_ENABLED
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uint64_t *s = (uint64_t *)mem;
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mem_usage.sub(*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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uint64_t Memory::get_mem_available() {
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return -1; // 0xFFFF...
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}
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uint64_t Memory::get_mem_usage() {
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#ifdef DEBUG_ENABLED
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return mem_usage.get();
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#else
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return 0;
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#endif
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}
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uint64_t Memory::get_mem_max_usage() {
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#ifdef DEBUG_ENABLED
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return max_usage.get();
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#else
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return 0;
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#endif
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}
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_GlobalNil::_GlobalNil() {
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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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