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