--- parser3/src/include/pa_pool.h 2001/03/29 08:28:03 1.46 +++ parser3/src/include/pa_pool.h 2001/05/17 10:22:24 1.52 @@ -5,17 +5,16 @@ Author: Alexander Petrosyan (http://design.ru/paf) - $Id: pa_pool.h,v 1.46 2001/03/29 08:28:03 paf Exp $ + $Id: pa_pool.h,v 1.52 2001/05/17 10:22:24 parser Exp $ */ #ifndef PA_POOL_H #define PA_POOL_H -#include +#include "pa_config_includes.h" class Exception; class Temp_exception; -class Request; /** Pool mechanizm allows users not to free up allocated memory, @@ -26,24 +25,25 @@ class Request; @see Pooled */ + class Pool { friend Temp_exception; public: - Pool(void *astorage) : fstorage(astorage), fcontext(0), frequest(0), fexception(0) {} + Pool(void *astorage) : fstorage(astorage), fcontext(0), ftag(0), fexception(0) {} void set_context(void *acontext) { fcontext=acontext; } void *context() { return fcontext; } - void set_request(Request *arequest) { frequest=arequest; } - Request *request() { return frequest; } + void set_tag(void *atag) { ftag=atag; } + void *tag() { return ftag; } /// current exception object of the pool Exception& exception() const { return *fexception; } /// 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) { @@ -54,12 +54,15 @@ private: void *fstorage; void *fcontext; - Request *frequest; - -private: // implementation defined + void *ftag; - void *real_malloc(size_t size); +private: + + //{ + /// @name implementation defined + void *real_malloc(size_t size/*, int place*/); void *real_calloc(size_t size); + //} private: @@ -109,26 +112,31 @@ private: //disabled */ 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; } + + /** 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; } /// useful wrapper around pool - void *malloc(size_t size) const { return fpool.malloc(size); } + void *malloc(size_t size) const { return fpool->malloc(size); } /// useful wrapper around pool - void *calloc(size_t size) const { return fpool.calloc(size); } + void *calloc(size_t size) const { return fpool->calloc(size); } /// useful wrapper around pool - Exception& exception() const { return fpool.exception(); } + Exception& exception() const { return fpool->exception(); } }; /// useful macro for creating objects on current Pooled object Pooled::pool() #define NEW new(pool()) @@ -191,8 +199,6 @@ public: #define PTHROW XTHROW(pool.exception()) #define PCATCH(e) XCATCH(e) #define PEND_CATCH XEND_CATCH - -#define RTHROW XTHROW(r.pool().exception()) //@} #endif