--- parser3/src/include/pa_pool.h 2002/10/15 15:12:57 1.85 +++ parser3/src/include/pa_pool.h 2003/02/04 09:44:27 1.86.2.27 @@ -1,7 +1,7 @@ /** @file - Parser: pool class decl. + Parser: Parser: reference counting classes decls. - Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com) + Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) Author: Alexandr Petrosian (http://paf.design.ru) */ @@ -9,7 +9,9 @@ #ifndef PA_POOL_H #define PA_POOL_H -static const char* IDENT_POOL_H="$Date: 2002/10/15 15:12:57 $"; +static const char* IDENT_POOL_H="$Date: 2003/02/04 09:44:27 $"; + +// include #include "pa_config_includes.h" @@ -21,17 +23,22 @@ static const char* IDENT_POOL_H="$Date: // forwards +void *pa_malloc(size_t size); +void *pa_calloc(size_t size); +void pa_free(void *ptr); +void *pa_realloc(void *ptr, size_t size); + class Exception; class String; class Charset; class GdomeDOMString_auto_ptr; -/** +/* * Pool mechanizm allows users not to free up allocated memory, leaving that problem to 'pools'. @see Pooled -*/ +* / class Pool { public: @@ -63,7 +70,7 @@ public: //{@ helpers void *copy(const void *buf, const size_t size); - char *copy(const char *cstr); + char *copy(const char* cstr); //}@ //{@ source charset @@ -79,7 +86,7 @@ public: #ifdef XML /// @see Charset::transcode_cstr(xmlChar *s); - const char *transcode_cstr(xmlChar *s); + const char* transcode_cstr(xmlChar *s); /// @see Charset::transcode(xmlChar *s); String& transcode(xmlChar *s #ifndef NO_STRING_ORIGIN @@ -87,15 +94,15 @@ public: #endif ); /// @see Charset::transcode_cstr(GdomeDOMString *s); - const char *transcode_cstr(GdomeDOMString *s); + const char* transcode_cstr(GdomeDOMString *s); /// @see Charset::transcode(GdomeDOMString *s); String& transcode(GdomeDOMString *s #ifndef NO_STRING_ORIGIN , const String *origin #endif ); - /// @see Charset::transcode_cstr(const char *buf, size_t buf_size=0); - xmlChar *transcode_buf2xchar(const char *buf, size_t buf_size=0); + /// @see Charset::transcode_cstr(const char* buf, size_t buf_size=0); + xmlChar *transcode_buf2xchar(const char* buf, size_t buf_size=0); /// @see Charset::transcode(const String& s) GdomeDOMString_auto_ptr transcode(const String& s); @@ -148,6 +155,8 @@ private: //disabled Pool(const Pool&); Pool& operator= (const Pool&); }; +*/ + /** Base for all classes that are allocated in 'pools'. @@ -155,7 +164,7 @@ private: //disabled Holds Pool object. Contains useful wrappers to it's methods. @see NEW -*/ +* / // all classes that are members parents of packed class [String] // sould be packed also to avoid sparc odd st/lduh problem @@ -178,7 +187,7 @@ public: /** used for moving objects from one pool to another. in between object can have no pool and can not be used @see SQL_Driver_manager - */ + * / void set_pool(Pool *apool) { fpool=apool; } //{ @@ -187,10 +196,10 @@ public: void *calloc(size_t size) const { return fpool->calloc(size); } void register_cleanup(void (*cleanup) (void *), void *data) { fpool->register_cleanup(cleanup, data); } void *copy(const void *buf, const size_t size) { return fpool->copy(buf, size); } - char *copy(const char *cstr) { return fpool->copy(cstr); } + char *copy(const char* cstr) { return fpool->copy(cstr); } #ifdef XML - const char *transcode_cstr(GdomeDOMString *s) { return fpool->transcode_cstr(s); } + const char* transcode_cstr(GdomeDOMString *s) { return fpool->transcode_cstr(s); } String& transcode(GdomeDOMString *s #ifndef NO_STRING_ORIGIN , const String *origin @@ -209,5 +218,162 @@ public: #include "pa_pragma_pack_end.h" /// useful macro for creating objects on current Pooled object Pooled::pool() #define NEW new(pool()) +*/ + +#define override +#define rethrow throw + +inline void *operator new[] (size_t size) { + return pa_malloc(size); +} +inline void operator delete[] (void *ptr) { + pa_free(ptr); +} + +class PA_Allocated { +public: + /// the sole: instances allocated using our functions + static void *operator new(size_t size) { + return pa_malloc(size); + } + static void operator delete(void *ptr) { + pa_free(ptr); + } + static void *malloc(size_t size) { + return pa_malloc(size); + } + static void *calloc(size_t size) { + return pa_calloc(size); + } + static void *realloc(void *ptr, size_t size) { + return pa_realloc(ptr, size); + } + +}; + +/** + Base for all Parser classes, memory allocation/dallocation goes via pa_malloc/pa_free. +*/ +class PA_Object: public PA_Allocated { + mutable unsigned long freferences; +public: + PA_Object(): freferences(0) {} + virtual ~PA_Object()=0; + + void ref() const { + freferences++; + } + void unref() const { + if(freferences) { + if(--freferences==0) + delete this; + } + } +}; + + +template class object_ptr { + T *ptr; +public: + typedef T element_type; + + explicit object_ptr(T *ptr = 0) { + this->ptr=ptr; + if(ptr) + ptr->ref(); + } + template object_ptr(const object_ptr& src) { + this->ptr=src.get(); + if(ptr) + ptr->ref(); + } + object_ptr(const object_ptr& src) { + ptr=src.get(); + ptr->ref(); + } + object_ptr(T *ptr, int) { + this->ptr=ptr; + } + object_ptr& operator=(const object_ptr& src) { + if(this!=&src) + if(ptr!=src.get()) { + if(ptr) + ptr->unref(); + ptr=src.get(); + if(ptr) + ptr->ref(); + } + return *this; + } + ~object_ptr() { + if(ptr) + ptr->unref(); + } + T& operator*() const { + return *get(); + } + T *operator->() const { + return get(); + } + T *get() const { + return ptr; + } + operator bool() const { + return get()!=0; + } + bool operator !() const { + return get()==0; + } +}; + +#define DECLARE_OBJECT_PTR(name) \ + typedef object_ptr name##Ptr + +// typedef object_ptr name##Ptr; \ +// const object_ptr name##PtrZero(0); + +/// TEMPLATE CLASS smart_ptr, stolen from stl:auto_ptr & renamed field/params [not compiled on gcc] +template + class smart_ptr { + bool owns; + T *ptr; +public: + typedef T element_type; + explicit smart_ptr(T *aptr = 0) + : owns(aptr != 0), ptr(aptr) {} + smart_ptr(const smart_ptr& src) + : owns(src.owns), ptr(src.release()) {} + smart_ptr& operator=(const smart_ptr& src) + {if (this != &src) + {if (ptr != src.get()) + {if (owns) + delete ptr; + owns = src.owns; } + else if (src.owns) + owns = true; + ptr = src.release(); } + return (*this); } + ~smart_ptr() + {if (owns) + delete ptr; } + T& operator*() const + {return (*get()); } + T *get() const + {return ptr; } + T *release() const + {((smart_ptr *)this)->owns = false; + return (ptr); } + operator bool() const { + return get()!=0; + } + operator T*() const { + return ptr; + } + }; + +// convinient types + +typedef smart_ptr CharPtr; +const CharPtr CharPtrZero(0); #endif