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- /**************************************************************************/
- /* memory.cpp */
- /**************************************************************************/
- /* This file is part of: */
- /* GODOT ENGINE */
- /* https://godotengine.org */
- /**************************************************************************/
- /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
- /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
- /* */
- /* Permission is hereby granted, free of charge, to any person obtaining */
- /* a copy of this software and associated documentation files (the */
- /* "Software"), to deal in the Software without restriction, including */
- /* without limitation the rights to use, copy, modify, merge, publish, */
- /* distribute, sublicense, and/or sell copies of the Software, and to */
- /* permit persons to whom the Software is furnished to do so, subject to */
- /* the following conditions: */
- /* */
- /* The above copyright notice and this permission notice shall be */
- /* included in all copies or substantial portions of the Software. */
- /* */
- /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
- /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
- /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
- /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
- /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
- /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
- /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
- /**************************************************************************/
- #include "memory.h"
- #include "core/error/error_macros.h"
- #include "core/templates/safe_refcount.h"
- #include <stdio.h>
- #include <stdlib.h>
- void *operator new(size_t p_size, const char *p_description) {
- return Memory::alloc_static(p_size, false);
- }
- void *operator new(size_t p_size, void *(*p_allocfunc)(size_t p_size)) {
- return p_allocfunc(p_size);
- }
- #ifdef _MSC_VER
- void operator delete(void *p_mem, const char *p_description) {
- CRASH_NOW_MSG("Call to placement delete should not happen.");
- }
- void operator delete(void *p_mem, void *(*p_allocfunc)(size_t p_size)) {
- CRASH_NOW_MSG("Call to placement delete should not happen.");
- }
- void operator delete(void *p_mem, void *p_pointer, size_t check, const char *p_description) {
- CRASH_NOW_MSG("Call to placement delete should not happen.");
- }
- #endif
- #ifdef DEBUG_ENABLED
- SafeNumeric<uint64_t> Memory::mem_usage;
- SafeNumeric<uint64_t> Memory::max_usage;
- #endif
- SafeNumeric<uint64_t> Memory::alloc_count;
- void *Memory::alloc_static(size_t p_bytes, bool p_pad_align) {
- #ifdef DEBUG_ENABLED
- bool prepad = true;
- #else
- bool prepad = p_pad_align;
- #endif
- void *mem = malloc(p_bytes + (prepad ? DATA_OFFSET : 0));
- ERR_FAIL_NULL_V(mem, nullptr);
- alloc_count.increment();
- if (prepad) {
- uint8_t *s8 = (uint8_t *)mem;
- uint64_t *s = (uint64_t *)(s8 + SIZE_OFFSET);
- *s = p_bytes;
- #ifdef DEBUG_ENABLED
- uint64_t new_mem_usage = mem_usage.add(p_bytes);
- max_usage.exchange_if_greater(new_mem_usage);
- #endif
- return s8 + DATA_OFFSET;
- } else {
- return mem;
- }
- }
- void *Memory::realloc_static(void *p_memory, size_t p_bytes, bool p_pad_align) {
- if (p_memory == nullptr) {
- return alloc_static(p_bytes, p_pad_align);
- }
- uint8_t *mem = (uint8_t *)p_memory;
- #ifdef DEBUG_ENABLED
- bool prepad = true;
- #else
- bool prepad = p_pad_align;
- #endif
- if (prepad) {
- mem -= DATA_OFFSET;
- uint64_t *s = (uint64_t *)(mem + SIZE_OFFSET);
- #ifdef DEBUG_ENABLED
- if (p_bytes > *s) {
- uint64_t new_mem_usage = mem_usage.add(p_bytes - *s);
- max_usage.exchange_if_greater(new_mem_usage);
- } else {
- mem_usage.sub(*s - p_bytes);
- }
- #endif
- if (p_bytes == 0) {
- free(mem);
- return nullptr;
- } else {
- *s = p_bytes;
- mem = (uint8_t *)realloc(mem, p_bytes + DATA_OFFSET);
- ERR_FAIL_NULL_V(mem, nullptr);
- s = (uint64_t *)(mem + SIZE_OFFSET);
- *s = p_bytes;
- return mem + DATA_OFFSET;
- }
- } else {
- mem = (uint8_t *)realloc(mem, p_bytes);
- ERR_FAIL_COND_V(mem == nullptr && p_bytes > 0, nullptr);
- return mem;
- }
- }
- void Memory::free_static(void *p_ptr, bool p_pad_align) {
- ERR_FAIL_NULL(p_ptr);
- uint8_t *mem = (uint8_t *)p_ptr;
- #ifdef DEBUG_ENABLED
- bool prepad = true;
- #else
- bool prepad = p_pad_align;
- #endif
- alloc_count.decrement();
- if (prepad) {
- mem -= DATA_OFFSET;
- #ifdef DEBUG_ENABLED
- uint64_t *s = (uint64_t *)(mem + SIZE_OFFSET);
- mem_usage.sub(*s);
- #endif
- free(mem);
- } else {
- free(mem);
- }
- }
- uint64_t Memory::get_mem_available() {
- return -1; // 0xFFFF...
- }
- uint64_t Memory::get_mem_usage() {
- #ifdef DEBUG_ENABLED
- return mem_usage.get();
- #else
- return 0;
- #endif
- }
- uint64_t Memory::get_mem_max_usage() {
- #ifdef DEBUG_ENABLED
- return max_usage.get();
- #else
- return 0;
- #endif
- }
- _GlobalNil::_GlobalNil() {
- left = this;
- right = this;
- parent = this;
- }
- _GlobalNil _GlobalNilClass::_nil;
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