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/*
* Copy strings and objects into a memory pool.
* $Id$
* Copyright (c) 1997 by Tycho Softworks.
* For conditions of distribution and reuse see product license.
*/
#include <other/memory.h>
#include <std/math.h>
static void *memrequest(MEMPOOL *mem, MEMPAGE *page, size_t len)
{
int psize = mem->mem_psize;
void *obj;
/* align objects to ptr field size */
len = align(len, __OBJALIGN);
if(len > mem->mem_psize)
return (*mem->mem_pfault)(mem, len);
while(page)
{
if(page->page_used + len <= psize)
{
obj = &page->page[page->page_used];
page->page_used += len;
return obj;
}
page = page->page_next;
}
if(mem->mem_pused >= mem->mem_pcount)
return (*mem->mem_pfault)(mem, len);
++mem->mem_pused;
page = (MEMPAGE *)malloc(psize + sizeof(MEMPAGE));
if(!page)
return (*mem->mem_pfault)(mem, len);
mem->mem_last->page_next = page;
mem->mem_last = page;
page->page_used = len;
page->page_next = NULL;
return page->page;
}
void *memlreq(MEMPOOL *mem, size_t len)
{
return memrequest(mem, mem->mem_last, len);
}
void *memreq(MEMPOOL *mem, size_t len)
{
return memrequest(mem, memfirst(mem), len);
}
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