--- parser3/src/include/pa_pool.h 2001/10/19 15:14:20 1.66 +++ parser3/src/include/pa_pool.h 2003/01/27 15:35:24 1.86.2.11 @@ -1,52 +1,59 @@ /** @file - Parser: pool class decl. + Parser: Parser: reference counting classes decls. - Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) + Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com) - Author: Alexander Petrosyan (http://design.ru/paf) - - $Id: pa_pool.h,v 1.66 2001/10/19 15:14:20 parser Exp $ + Author: Alexandr Petrosian (http://paf.design.ru) */ #ifndef PA_POOL_H #define PA_POOL_H +static const char* IDENT_POOL_H="$Date: 2003/01/27 15:35:24 $"; + #include "pa_config_includes.h" #ifdef XML -#include -#include -#include +# include "gdome.h" +// for xmlChar +# include "libxml/tree.h" #endif +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); + // forwards class Exception; -class Temp_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: Pool(void *astorage); - ~Pool(); + + //{@ statistics + size_t total_allocated() { return ftotal_allocated; } + unsigned int total_times() { return ftotal_times; } + //}@ void set_context(void *acontext) { fcontext=acontext; } void *get_context() { return fcontext; } - void set_tag(void *atag) { ftag=atag; } - void *tag() { return ftag; } - /// allocates some bytes on pool - void *malloc(size_t size/*, int place=0*/) { - return check(real_malloc(size/*, place*/), size); + void *malloc(size_t size, int place=0) { + return check(real_malloc(size, place), size); } /// allocates some bytes clearing them with zeros void *calloc(size_t size) { @@ -59,23 +66,58 @@ public: fail_register_cleanup(); } - /// resets transcoder if they change charset - void set_charset(const String &charset); - /// returns current charset - const String& get_charset() { return *charset; } + //{@ helpers + void *copy(const void *buf, const size_t size); + char *copy(const char *cstr); + //}@ + + //{@ source charset + void set_source_charset(Charset& acharset); + Charset& get_source_charset(); + //}@ + + //{@ client charset + void set_client_charset(Charset& charset); + Charset& get_client_charset(); + //}@ + +#ifdef XML + + /// @see Charset::transcode_cstr(xmlChar *s); + const char *transcode_cstr(xmlChar *s); + /// @see Charset::transcode(xmlChar *s); + String& transcode(xmlChar *s +#ifndef NO_STRING_ORIGIN + , const String *origin +#endif + ); + /// @see Charset::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(const String& s) + GdomeDOMString_auto_ptr transcode(const String& s); + +#endif private: void *fstorage; void *fcontext; - void *ftag; - const String *charset; + Charset *source_charset; + Charset *client_charset; private: //{ /// @name implementation defined - void *real_malloc(size_t size/*, int place*/); + void *real_malloc(size_t size, int place); void *real_calloc(size_t size); bool real_register_cleanup(void (*cleanup) (void *), void *data); //} @@ -84,8 +126,11 @@ private: /// checks whether mem allocated OK. throws exception otherwise void *check(void *ptr, size_t size) { - if(ptr) + if(ptr) { + ftotal_allocated+=size; + ftotal_times++; return ptr; + } fail_alloc(size); @@ -98,34 +143,18 @@ private: /// throws register cleanup exception void fail_register_cleanup() const; -#ifdef XML - -public: - /// converts Xalan string to char * - const char *transcode_cstr(const XalanDOMString& s); - /// converts Xalan string to parser String - String& transcode(const XalanDOMString& s); - /// converts char * to Xalan string - std::auto_ptr< XalanDOMString> transcode_buf(const char *buf, size_t buf_size); - /// converts parser String to Xalan string - std::auto_ptr transcode(const String& s); - -private: - - void set_charset(const char *new_scharset); - void update_transcoder(); - -private: - - XMLTranscoder *transcoder; - -#endif +private: // statistics + + size_t ftotal_allocated; + unsigned int ftotal_times; private: //disabled Pool(const Pool&); Pool& operator= (const Pool&); }; +*/ + /** Base for all classes that are allocated in 'pools'. @@ -133,7 +162,11 @@ 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 +#include "pa_pragma_pack_begin.h" class Pooled { // the pool i'm allocated on Pool *fpool; @@ -141,7 +174,7 @@ public: /// the Pooled-sole: Pooled instances can be allocated in Pool rather then on heap static void *operator new(size_t size, Pool& apool) { - return apool.malloc(size/*, 1*/); + return apool.malloc(size, 1); } Pooled(Pool& apool) : fpool(&apool) {} @@ -152,21 +185,188 @@ 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; } //{ /// @name useful wrapper around pool - void *malloc(size_t size) const { return fpool->malloc(size); } + 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 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 - const char *transcode_cstr(const XalanDOMString& s) { return fpool->transcode_cstr(s); } - String& transcode(const XalanDOMString& s) { return fpool->transcode(s); } + + const char *transcode_cstr(GdomeDOMString *s) { return fpool->transcode_cstr(s); } + String& transcode(GdomeDOMString *s +#ifndef NO_STRING_ORIGIN + , const String *origin +#endif + ) { + return fpool->transcode(s +#ifndef NO_STRING_ORIGIN + , origin +#endif + ); + } + #endif //} }; +#include "pa_pragma_pack_end.h" /// useful macro for creating objects on current Pooled object Pooled::pool() #define NEW new(pool()) +*/ + +#define override + +void *operator new(size_t size) { + return pa_malloc(size); +} +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 references; +public: + PA_Object(): references(0) {} + virtual ~PA_Object()=0; + + void ref() const { + references++; + } + void unref() const { + if(references) { + if(--references==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(); + } + object_ptr(const object_ptr& src) { + ptr=src.get(); + ptr->ref(); + } + 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; + } + // so one could assign object_ptr to object_ptr + operator object_ptr() const{ + return *this; + } + operator bool() const { + return get()!=0; + } + operator !() const { + return get()==0; + } +}; + +#define DECLARE_OBJECT_PTR(name) typedef object_ptr name##Ptr; + +/// TEMPLATE CLASS smart_ptr, stolen from stl:auto_ptr +template + class smart_ptr { +public: + typedef T element_type; + explicit smart_ptr(T *_P = 0) + : _Owns(_P != 0), _Ptr(_P) {} + smart_ptr(const smart_ptr& _Y) + : _Owns(_Y._Owns), _Ptr(_Y.release()) {} + smart_ptr& operator=(const smart_ptr& _Y) + {if (this != &_Y) + {if (_Ptr != _Y.get()) + {if (_Owns) + delete _Ptr; + _Owns = _Y._Owns; } + else if (_Y._Owns) + _Owns = true; + _Ptr = _Y.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); } + // so one could assign smart_ptr to smart_ptr + operator smart_ptr() const { + return *this; + } + operator bool() const { + return get()!=0; + } + operator T*() const { + return _Ptr; + } +private: + bool _Owns; + T *_Ptr; + }; + +// convinient types + +typedef smart_ptr CharPtr; #endif