/*************************************************************************/ /* memory.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* 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 ? PAD_ALIGN : 0)); ERR_FAIL_COND_V(!mem, nullptr); alloc_count.increment(); if (prepad) { uint64_t *s = (uint64_t *)mem; *s = p_bytes; uint8_t *s8 = (uint8_t *)mem; #ifdef DEBUG_ENABLED uint64_t new_mem_usage = mem_usage.add(p_bytes); max_usage.exchange_if_greater(new_mem_usage); #endif return s8 + PAD_ALIGN; } 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 -= PAD_ALIGN; uint64_t *s = (uint64_t *)mem; #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 + PAD_ALIGN); ERR_FAIL_COND_V(!mem, nullptr); s = (uint64_t *)mem; *s = p_bytes; return mem + PAD_ALIGN; } } 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_COND(p_ptr == nullptr); 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 -= PAD_ALIGN; #ifdef DEBUG_ENABLED uint64_t *s = (uint64_t *)mem; 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;