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/*************************************************************************/
/* 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;
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