hi all
i want overload new and delete . so i can use my buff
my os windows 2k sp4
compiler vs 2003
code:
#include "ace/Task.h"
#include "ace/OS_NS_unistd.h"
#include <iostream>
using namespace std;
#define table_len 1024*10240
class p_table;
class process {
public:
process() { /*cout<<"construct"<<'\n'; */}
~process() { /*cout<<"destruct"<<'\n'; */}
void * operator new(size_t s)
{
p_table *p =p_table::get_table();
// errow p_table *p =p_table::get_table();
// i think it is right can you show me the reason?
// thank you
return p->pop();
}
void operator delete (void *p)
{
p_table *p =p_table::get_table();
//errow
//
p->push((process * )p);
}
private:
double mm;
long xxx;
int age;
double aaa;
float ssss;
};
class p_table
{
public:
static p_table* get_table()
{
static p_table tmp;
return &tmp;
}
process * pop()
{
process * newnod = NULL;
mutex_.acquire();
if ( m_size)
{
newnod = tab[m_size-1];
tab[m_size-1] = NULL;
m_size--;
}
else
newnod = ( process *)::operator new (sizeof (process));
mutex_.release();
return newnod;
}
bool push (process * p)
{
mutex_.acquire();
if ( m_size < table_len)
{
tab[m_size] = p;
m_size++;
}
else
::operator delete( p);
mutex_.release();
return true;
}
private:
ACE_Thread_Mutex mutex_;
process * tab[table_len];
int m_size;
protected:
p_table():m_size(0)
{
mutex_.acquire();
for (int i = 0; i < table_len ; i++)
tab[i] = NULL;
mutex_.release();
}
};
there are some bug . can you fix it? thanks
papaka
