--- parser3/src/include/pa_pool.h 2001/03/22 16:38:19 1.41 +++ parser3/src/include/pa_pool.h 2002/02/08 08:30:13 1.78 @@ -1,106 +1,137 @@ /** @file Parser: pool class decl. - Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) + Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com) - Author: Alexander Petrosyan (http://design.ru/paf) + Author: Alexandr Petrosian (http://paf.design.ru) - $Id: pa_pool.h,v 1.41 2001/03/22 16:38:19 paf Exp $ + $Id: pa_pool.h,v 1.78 2002/02/08 08:30:13 paf Exp $ */ #ifndef PA_POOL_H #define PA_POOL_H -#include +#include "pa_config_includes.h" + +#ifdef XML +# include "gdome.h" +// for xmlChar +# include "libxml/tree.h" +#endif + +// 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'. - Also holds Exception object, which can be temporary set using - Temp_exception auto-object. - @see Pooled */ class Pool { - friend Temp_exception; public: - Pool() : fstorage(0), fcontext(0), ftag(0), fexception(0) {} - ~Pool(); - - void set_storage(void *astorage) { fstorage=astorage; } - void set_context(void *acontext) { fcontext=acontext; } - void set_tag(void *atag) { ftag=atag; } + Pool(void *astorage); - void *storage() { return fstorage; } - void *context() { return fcontext; } - void *tag() { return ftag; } + ///{@ statistics + size_t total_allocated() { return ftotal_allocated; } + unsigned int total_times() { return ftotal_times; } + ///}@ - /// current exception object of the pool - Exception& exception() const { return *fexception; } + void set_context(void *acontext) { fcontext=acontext; } + void *get_context() { return fcontext; } /// allocates some bytes on pool - void *malloc(size_t size) { - return check(real_malloc(size), 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) { return check(real_calloc(size), size); } + /// registers a routine to clean up non-pooled allocations + void register_cleanup(void (*cleanup) (void *), void *data) { + if(!real_register_cleanup(cleanup, data)) + fail_register_cleanup(); + } + + ///{@ 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); + /// @see Charset::transcode_cstr(GdomeDOMString *s); + const char *transcode_cstr(GdomeDOMString *s); + /// @see Charset::transcode(GdomeDOMString *s); + String& transcode(GdomeDOMString *s); + /// @see Charset::transcode(const String& s) + GdomeDOMString_auto_ptr transcode(const String& s); + +#endif + private: void *fstorage; void *fcontext; - void *ftag; + Charset *source_charset; + Charset *client_charset; -private: // implementation defined - - void *real_malloc(size_t size); +private: + + //{ + /// @name implementation defined + void *real_malloc(size_t size, int place); void *real_calloc(size_t size); + bool real_register_cleanup(void (*cleanup) (void *), void *data); + //} 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(size); + fail_alloc(size); // never reached return 0; } - /// throws proper exception - void fail(size_t size) const; + /// throws allocation exception + void fail_alloc(size_t size) const; -private: // exception handling + /// throws register cleanup exception + void fail_register_cleanup() const; - // exception replacement mechanism is 'protected' from direct usage - // Temp_exception object enforces paired set/restore - Exception *set_exception(Exception *e){ - Exception *r=fexception; - fexception=e; - return r; - } - void restore_exception(Exception *e) { - fexception=e; - } - -private: - - // current request's exception object - Exception *fexception; +private: // statistics + + size_t ftotal_allocated; + unsigned int ftotal_times; private: //disabled - // Pool(const Pool&) {} - Pool& operator = (const Pool&) { return *this; } + Pool(const Pool&); + Pool& operator= (const Pool&); }; /** @@ -108,94 +139,43 @@ private: //disabled Holds Pool object. Contains useful wrappers to it's methods. - @see NEW, Temp_exception + @see NEW */ class Pooled { // the pool i'm allocated on - Pool& fpool; + Pool *fpool; 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); + return apool.malloc(size, 1); } - Pooled(Pool& apool) : fpool(apool) { - } + Pooled(Pool& apool) : fpool(&apool) {} /// my pool - Pool& pool() const { return fpool; } + Pool& pool() const { return *fpool; } - /// useful wrapper around pool - void *malloc(size_t size) const { return fpool.malloc(size); } - /// useful wrapper around pool - void *calloc(size_t size) const { return fpool.calloc(size); } - /// useful wrapper around pool - Exception& exception() const { return fpool.exception(); } -}; -/// useful macro for creating objects on current Pooled object Pooled::pool() -#define NEW new(pool()) + /** 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, 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); } +#ifdef XML -/** - Auto-object used for temporary changing Pool's exception(). + const char *transcode_cstr(GdomeDOMString *s) { return fpool->transcode_cstr(s); } + String& transcode(GdomeDOMString *s) { return fpool->transcode(s); } - Use by with these macros: - @code - TRY { - // ... - if(?) - THROW(?); - // ... - } CATCH(e) { - // code, using e fields - // e.comment() - } - END_CATCH - @endcode - - @see TRY, THROW -*/ -class Temp_exception { - Pool& fpool; - Exception *saved_exception; -public: - Temp_exception(Pool& apool, Exception& exception) : - fpool(apool), - saved_exception(apool.set_exception(&exception)) { - } - ~Temp_exception() { - fpool.restore_exception(saved_exception); - } +#endif + //} }; - -#define XTRY(pool) \ - { \ - Exception temp_exception; \ - Temp_exception le(pool, temp_exception); \ - if(setjmp(temp_exception.mark)==0) - -#define XTHROW(exception) exception._throw -#define XCATCH(e) \ - else{ \ - Exception& e=temp_exception; - -#define XEND_CATCH \ - } \ - } - -//@{ -/// @see Temp_exception -#define TRY XTRY(pool()) -#define THROW XTHROW(exception()) -#define CATCH(e) XCATCH(e) -#define END_CATCH XEND_CATCH - -#define PTRY XTRY(pool) -#define PTHROW XTHROW(pool.exception()) -#define PCATCH(e) XCATCH(e) -#define PEND_CATCH XEND_CATCH - -#define RTHROW XTHROW(r.pool().exception()) -//@} +/// useful macro for creating objects on current Pooled object Pooled::pool() +#define NEW new(pool()) #endif