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| version 1.82, 2002/08/01 11:26:47 | version 1.86.2.27, 2003/02/04 09:44:27 |
|---|---|
| Line 1 | Line 1 |
| /** @file | /** @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 <paf@design.ru> (http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| */ | */ |
| Line 9 | Line 9 |
| #ifndef PA_POOL_H | #ifndef PA_POOL_H |
| #define PA_POOL_H | #define PA_POOL_H |
| static const char* IDENT_POOL_H="$Id$"; | static const char* IDENT_POOL_H="$Date$"; |
| // include | |
| #include "pa_config_includes.h" | #include "pa_config_includes.h" |
| Line 21 static const char* IDENT_POOL_H="$Id$"; | Line 23 static const char* IDENT_POOL_H="$Id$"; |
| // forwards | // 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 Exception; |
| class String; | class String; |
| class Charset; | class Charset; |
| class GdomeDOMString_auto_ptr; | class GdomeDOMString_auto_ptr; |
| /** | /* * |
| Pool mechanizm allows users not to free up allocated memory, | Pool mechanizm allows users not to free up allocated memory, |
| leaving that problem to 'pools'. | leaving that problem to 'pools'. |
| @see Pooled | @see Pooled |
| */ | * / |
| class Pool { | class Pool { |
| public: | public: |
| Line 61 public: | Line 68 public: |
| fail_register_cleanup(); | fail_register_cleanup(); |
| } | } |
| //{@ helpers | |
| void *copy(const void *buf, const size_t size); | |
| char *copy(const char* cstr); | |
| //}@ | |
| //{@ source charset | //{@ source charset |
| void set_source_charset(Charset& acharset); | void set_source_charset(Charset& acharset); |
| Charset& get_source_charset(); | Charset& get_source_charset(); |
| Line 74 public: | Line 86 public: |
| #ifdef XML | #ifdef XML |
| /// @see Charset::transcode_cstr(xmlChar *s); | /// @see Charset::transcode_cstr(xmlChar *s); |
| const char *transcode_cstr(xmlChar *s); | const char* transcode_cstr(xmlChar *s); |
| /// @see Charset::transcode(xmlChar *s); | /// @see Charset::transcode(xmlChar *s); |
| String& transcode(xmlChar *s); | String& transcode(xmlChar *s |
| #ifndef NO_STRING_ORIGIN | |
| , const String *origin | |
| #endif | |
| ); | |
| /// @see Charset::transcode_cstr(GdomeDOMString *s); | /// @see Charset::transcode_cstr(GdomeDOMString *s); |
| const char *transcode_cstr(GdomeDOMString *s); | const char* transcode_cstr(GdomeDOMString *s); |
| /// @see Charset::transcode(GdomeDOMString *s); | /// @see Charset::transcode(GdomeDOMString *s); |
| String& transcode(GdomeDOMString *s); | String& transcode(GdomeDOMString *s |
| /// @see Charset::transcode_cstr(const char *buf, size_t buf_size=0); | #ifndef NO_STRING_ORIGIN |
| xmlChar *transcode_buf2xchar(const char *buf, size_t buf_size=0); | , 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(const String& s) | /// @see Charset::transcode(const String& s) |
| GdomeDOMString_auto_ptr transcode(const String& s); | GdomeDOMString_auto_ptr transcode(const String& s); |
| Line 135 private: //disabled | Line 155 private: //disabled |
| Pool(const Pool&); | Pool(const Pool&); |
| Pool& operator= (const Pool&); | Pool& operator= (const Pool&); |
| }; | }; |
| */ | |
| /** | /** |
| Base for all classes that are allocated in 'pools'. | Base for all classes that are allocated in 'pools'. |
| Line 142 private: //disabled | Line 164 private: //disabled |
| Holds Pool object. Contains useful wrappers to it's methods. | Holds Pool object. Contains useful wrappers to it's methods. |
| @see NEW | @see NEW |
| */ | * / |
| // all classes that are members parents of packed class [String] | // all classes that are members parents of packed class [String] |
| // sould be packed also to avoid sparc odd st/lduh problem | // sould be packed also to avoid sparc odd st/lduh problem |
| Line 165 public: | Line 187 public: |
| /** used for moving objects from one pool to another. | /** used for moving objects from one pool to another. |
| in between object can have no pool and can not be used | in between object can have no pool and can not be used |
| @see SQL_Driver_manager | @see SQL_Driver_manager |
| */ | * / |
| void set_pool(Pool *apool) { fpool=apool; } | void set_pool(Pool *apool) { fpool=apool; } |
| //{ | //{ |
| Line 173 public: | Line 195 public: |
| void *malloc(size_t size, int place=0) const { return fpool->malloc(size, place); } | void *malloc(size_t size, int place=0) const { return fpool->malloc(size, place); } |
| void *calloc(size_t size) const { return fpool->calloc(size); } | void *calloc(size_t size) const { return fpool->calloc(size); } |
| void register_cleanup(void (*cleanup) (void *), void *data) { fpool->register_cleanup(cleanup, data); } | 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); } | |
| #ifdef XML | #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) { return fpool->transcode(s); } | String& transcode(GdomeDOMString *s |
| #ifndef NO_STRING_ORIGIN | |
| , const String *origin | |
| #endif | |
| ) { | |
| return fpool->transcode(s | |
| #ifndef NO_STRING_ORIGIN | |
| , origin | |
| #endif | |
| ); | |
| } | |
| #endif | #endif |
| //} | //} |
| Line 184 public: | Line 218 public: |
| #include "pa_pragma_pack_end.h" | #include "pa_pragma_pack_end.h" |
| /// useful macro for creating objects on current Pooled object Pooled::pool() | /// useful macro for creating objects on current Pooled object Pooled::pool() |
| #define NEW new(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<typename T> class object_ptr { | |
| T *ptr; | |
| public: | |
| typedef T element_type; | |
| explicit object_ptr(T *ptr = 0) { | |
| this->ptr=ptr; | |
| if(ptr) | |
| ptr->ref(); | |
| } | |
| template<class B> object_ptr(const object_ptr<B>& src) { | |
| this->ptr=src.get(); | |
| if(ptr) | |
| ptr->ref(); | |
| } | |
| object_ptr(const object_ptr<T>& src) { | |
| ptr=src.get(); | |
| ptr->ref(); | |
| } | |
| object_ptr(T *ptr, int) { | |
| this->ptr=ptr; | |
| } | |
| object_ptr<T>& operator=(const object_ptr<T>& 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> name##Ptr | |
| // typedef object_ptr<name> name##Ptr; \ | |
| // const object_ptr<name> name##PtrZero(0); | |
| /// TEMPLATE CLASS smart_ptr, stolen from stl:auto_ptr & renamed field/params [not compiled on gcc] | |
| template<class T> | |
| 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<T>& src) | |
| : owns(src.owns), ptr(src.release()) {} | |
| smart_ptr<T>& operator=(const smart_ptr<T>& 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<T> *)this)->owns = false; | |
| return (ptr); } | |
| operator bool() const { | |
| return get()!=0; | |
| } | |
| operator T*() const { | |
| return ptr; | |
| } | |
| }; | |
| // convinient types | |
| typedef smart_ptr<char> CharPtr; | |
| const CharPtr CharPtrZero(0); | |
| #endif | #endif |