Pool_std.h
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/*ident "@(#) @(#)Pool_std.h 1.1.1.2" */
/******************************************************************************
*
* C++ Standard Library
*
* Copyright (c) 1996 Lucent Technologies. All Rights Reserved.
*
* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF Lucent Technologies.
* The copyright notice above does not evidence any actual or
* intended publication of such source code.
*
******************************************************************************/
#ifndef STDSTRINGPOOLH
#define STDSTRINGPOOLH
#ifndef __STDDEF_H
#include <stddef.h>
#endif
#include "compiler_type.h"
#ifdef NAMESPACES_LUCENT
namespace std {
#endif
class Block_header_std_LUCENT {
Block_header_std_LUCENT* next;
friend class Block_pool_std_LUCENT;
};
class Block_pool_std_LUCENT {
size_t sz;
unsigned cnt;
Block_header_std_LUCENT* head;
Block_pool_std_LUCENT(const Block_pool_std_LUCENT&); // copy protection
void operator= (const Block_pool_std_LUCENT&); // copy protection
public:
size_t size() const { return sz; }
unsigned count() const { return cnt; }
Block_pool_std_LUCENT(size_t);
~Block_pool_std_LUCENT();
char *expand();
void free();
};
class Pool_std_element_header {
Pool_std_element_header *next;
friend class Pool_std;
};
class Pool_std: private Block_pool_std_LUCENT {
size_t elsize;
unsigned count;
Pool_std_element_header *head;
Pool_std(const Pool_std&); // copy protection
void operator= (Pool_std&); // copy protection
void grow();
public:
Pool_std(size_t n);
void *alloc() {
if (!head)
grow();
register Pool_std_element_header *p = head;
head = p->next;
return p;
}
void free(void *b) {
register Pool_std_element_header *p = (Pool_std_element_header*) b;
p->next = head;
head = p;
}
void purge() {
Block_pool_std_LUCENT::free();
head = 0;
}
};
#ifdef NAMESPACES_LUCENT
}
#endif
#endif