/*
* Portions of this file are copyright Rebirth contributors and licensed as
* described in COPYING.txt.
* Portions of this file are copyright Parallax Software and licensed
* according to the Parallax license below.
* See COPYING.txt for license details.
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
*/
#pragma once
#include <stdlib.h>
#include <type_traits>
#ifdef __cplusplus
#include <memory>
#include "dxxsconf.h"
#include "dsx-ns.h"
#include <utility>
#define MEM_K 1.5 // Dynamic array growth factor
#ifdef DEBUG_BIAS_MEMORY_ALLOCATIONS
#include <array>
#define DXX_DEBUG_BIAS_MEMORY_ALLOCATION (sizeof(std::array<double, 2>))
#else
#define DXX_DEBUG_BIAS_MEMORY_ALLOCATION (0)
#endif
namespace dcx {
#ifdef DEBUG_MEMORY_ALLOCATIONS
void mem_init(void);
void mem_display_blocks();
__attribute_alloc_size(1)
__attribute_malloc()
void *mem_malloc(size_t size, const char *var, const char *file, unsigned line);
void * mem_calloc( size_t nmemb, size_t size, const char * var, const char * filename, unsigned line) __attribute_alloc_size(1,2) __attribute_malloc();
__attribute_alloc_size(2)
void *mem_realloc(void *buffer, size_t size, const char *var, const char *file, unsigned line);
extern void mem_free( void * buffer );
/* DPH: Changed malloc, etc. to d_malloc. Overloading system calls is very evil and error prone */
// Checks to see if any blocks are overwritten
void mem_validate_heap();
#define mem_calloc(nmemb,size,var,file,line) ((mem_calloc)((size) ? (nmemb) : 0, (size), (var), (file), (line)))
#else
#ifdef DEBUG_BIAS_MEMORY_ALLOCATIONS
#define bias_malloc(SIZE) ({ \
auto p = malloc((SIZE) + DXX_DEBUG_BIAS_MEMORY_ALLOCATION); \
p ? p + DXX_DEBUG_BIAS_MEMORY_ALLOCATION : p; \
})
/* Bias calloc wastes a bit extra to keep the math simple */
#define bias_calloc(NMEMB,SIZE) ({ \
auto p = calloc((NMEMB), (SIZE) + DXX_DEBUG_BIAS_MEMORY_ALLOCATION); \
p ? p + DXX_DEBUG_BIAS_MEMORY_ALLOCATION : p; \
})
#define bias_realloc(PTR,SIZE) ({ \
auto p = realloc(reinterpret_cast<char *>(PTR) - DXX_DEBUG_BIAS_MEMORY_ALLOCATION, (SIZE) + DXX_DEBUG_BIAS_MEMORY_ALLOCATION); \
p ? p + DXX_DEBUG_BIAS_MEMORY_ALLOCATION : p; \
})
#define bias_free(PTR) free(reinterpret_cast<char *>(PTR) - DXX_DEBUG_BIAS_MEMORY_ALLOCATION)
#else
#define bias_malloc malloc
#define bias_calloc calloc
#define bias_realloc realloc
#define bias_free free
#endif
#define mem_malloc(size,var,file,line) ((void)var,(void)file,(void)line,bias_malloc((size)))
#define mem_calloc(nmemb,size,var,file,line) ((void)var,(void)file,(void)line,bias_calloc((nmemb),(size)))
#define mem_realloc(ptr,size,var,file,line) ((void)var,(void)file,(void)line,bias_realloc((ptr),(size)))
#define mem_free bias_free
static inline void mem_init(void)
{
}
#endif
template <typename T>
T *MALLOC(T *&r, std::size_t count, const char *var, const char *file, unsigned line)
{
static_assert(std::is_pod<T>::value, "MALLOC cannot allocate non-POD");
return r = reinterpret_cast<T *>(mem_malloc(count * sizeof(T), var, file, line));
}
template <typename T>
T *CALLOC(T *&r, std::size_t count, const char *var, const char *file, unsigned line)
{
static_assert(std::is_pod<T>::value, "CALLOC cannot allocate non-POD");
return r = reinterpret_cast<T *>(mem_calloc(count, sizeof(T), var, file, line));
}
#define d_malloc(size) mem_malloc((size),"Unknown", __FILE__,__LINE__ )
#define d_realloc(ptr,size) mem_realloc((ptr),(size),"Unknown", __FILE__,__LINE__ )
template <typename T>
static inline void d_free(T *&ptr)
{
static_assert((std::is_same<T, void>::value || std::is_pod<T>::value), "d_free cannot free non-POD");
mem_free(std::exchange(ptr, nullptr));
}
template <typename T>
class RAIIdmem_deleter
{
public:
void operator()(T *v) const
{
d_free(v);
}
};
template <typename T>
class RAIIdmem_deleter<T[]> : public RAIIdmem_deleter<T>
{
public:
typedef T *pointer;
};
template <typename T>
class RAIIdmem : public std::unique_ptr<T, RAIIdmem_deleter<T>>
{
typedef std::unique_ptr<T, RAIIdmem_deleter<T>> base_ptr;
public:
static_assert(std::is_pod<typename base_ptr::element_type>::value, "RAIIdmem cannot manage non-POD");
DXX_INHERIT_CONSTRUCTORS(RAIIdmem, base_ptr);
};
/* Disallow C-style arrays of known bound. Use RAIIdmem<std::array<T, N>>
* for this case.
*/
template <typename T, std::size_t N>
class RAIIdmem<T[N]>
{
public:
RAIIdmem() = delete;
};
template <typename T>
RAIIdmem<T> &MALLOC(RAIIdmem<T> &r, std::size_t count, const char *var, const char *file, unsigned line)
{
typename RAIIdmem<T>::pointer p;
return r.reset(MALLOC<typename RAIIdmem<T>::element_type>(p, count, var, file, line)), r;
}
template <typename T>
RAIIdmem<T[]> &MALLOC(RAIIdmem<T[]> &r, const std::size_t count, const char *const var, const char *const file, const unsigned line)
{
return MALLOC<T[]>(r, count, var, file, line);
}
template <typename T>
void CALLOC(RAIIdmem<T> &r, std::size_t count, const char *var, const char *file, unsigned line)
{
typename RAIIdmem<T>::pointer p;
r.reset(CALLOC<typename RAIIdmem<T>::element_type>(p, count, var, file, line));
}
#define MALLOC( var, type, count ) (MALLOC<type>(var, (count),#var, __FILE__,__LINE__ ))
#define CALLOC( var, type, count ) (CALLOC<type>(var, (count),#var, __FILE__,__LINE__ ))
}
#endif