145 lines
4.8 KiB
C++
145 lines
4.8 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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#ifndef _U_MEM_H
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#define _U_MEM_H
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#include <stdlib.h>
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#ifdef __cplusplus
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#include "dxxsconf.h"
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#include "compiler-exchange.h"
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#include "compiler-type_traits.h"
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#define MEM_K 1.5 // Dynamic array growth factor
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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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void * mem_malloc( unsigned int size, const char * var, const char * file, unsigned line) __attribute_alloc_size(1) __attribute_malloc();
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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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void * mem_realloc( void * buffer, unsigned int size, const char * var, const char * file, int line ) __attribute_alloc_size(2);
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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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#define mem_malloc(size,var,file,line) malloc((size))
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#define mem_calloc(nmemb,size,var,file,line) calloc((nmemb), (size))
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#define mem_realloc(ptr,size,var,file,line) realloc((ptr),(size))
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#define mem_free 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(tt::is_pod<T>::value, "MALLOC cannot allocate non-POD");
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return r = reinterpret_cast<T *>(mem_malloc(count, 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(tt::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_calloc(nmemb,size) mem_calloc((nmemb),(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(tt::is_same<T, void>::value || tt::is_pod<T>::value, "d_free cannot free non-POD");
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T *t = ptr;
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ptr = NULL;
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mem_free(t);
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}
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class BaseRAIIdmem
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{
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protected:
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BaseRAIIdmem(const BaseRAIIdmem&) = delete;
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BaseRAIIdmem& operator=(const BaseRAIIdmem&) = delete;
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BaseRAIIdmem(BaseRAIIdmem &&that) : p(exchange(that.p, nullptr)) {}
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BaseRAIIdmem& operator=(BaseRAIIdmem &&rhs)
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{
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std::swap(p, rhs.p);
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return *this;
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}
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void *p;
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BaseRAIIdmem(void *v = nullptr) : p(v) {}
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~BaseRAIIdmem() {
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#ifdef DEBUG_MEMORY_ALLOCATIONS
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if (p) // Avoid bogus warning about freeing NULL
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#endif
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d_free(p);
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}
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};
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template <typename T>
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struct RAIIdmem : BaseRAIIdmem
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{
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static_assert(tt::is_pod<T>::value, "RAIIdmem cannot manage non-POD");
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RAIIdmem() = default;
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RAIIdmem(std::nullptr_t) : BaseRAIIdmem(nullptr) {}
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explicit RAIIdmem(T *v) : BaseRAIIdmem(v) {}
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#ifdef DXX_HAVE_CXX11_REF_QUALIFIER
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operator T*() const & { return static_cast<T*>(p); }
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operator T*() const && = delete;
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#else
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operator T*() const { return static_cast<T*>(p); }
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#endif
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T *operator->() const { return static_cast<T*>(p); }
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};
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template <typename T>
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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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T *p;
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return r = RAIIdmem<T>(MALLOC<T>(p, count, var, file, line));
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}
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template <typename T>
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T *CALLOC(RAIIdmem<T> &r, std::size_t count, const char *var, const char *file, unsigned line)
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{
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T *p;
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return r = RAIIdmem<T>(CALLOC<T>(p, count, var, file, line));
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}
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#define MALLOC( var, type, count ) (MALLOC<type>(var, (count)*sizeof(type),#var, __FILE__,__LINE__ ))
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#define CALLOC( var, type, count ) (CALLOC<type>(var, (count),#var, __FILE__,__LINE__ ))
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typedef RAIIdmem<unsigned char> RAIIdubyte;
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typedef RAIIdmem<char> RAIIdchar;
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#endif
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#endif // _U_MEM_H
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