56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
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#include "pageManager.h"
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extern pageManager pageMan;
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/* This is the template
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* replace TYPE with the type you need a pool for
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*
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class poolTYPE
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{
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private:
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list unused;
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sem_id inUse;
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public:
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poolTYPE(void)
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{
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inUse = create_sem(1,"TYPEpool");
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}
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TYPE *get(void)
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{
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TYPE *ret=NULL;
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if (unused.count())
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{
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printf ("poolTYPE::get: Getting an unused one!\n");
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acquire_sem(inUse);
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ret=(TYPE *)unused.next();
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release_sem(inUse);
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}
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if (ret)
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{
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printf ("poolTYPE::get: Returning address:%x \n",ret);
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return ret;
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}
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else
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{
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printf ("poolTYPE::get: Getting a new page!\n");
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page *newPage=pageMan.getPage();
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if (!newPage)
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throw ("Out of pages to allocate a pool!");
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int newCount=PAGE_SIZE/sizeof(TYPE);
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acquire_sem(inUse);
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printf ("poolTYPE::get: Adding %d new elements to the pool!\n",newCount);
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for (int i=0;i<newCount;i++)
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unused.add(((void *)(newPage->getAddress()+(i*sizeof(TYPE)))));
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release_sem(inUse);
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return (get()); // A little cheat - call self again to get the first one from stack...
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}
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}
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void put(TYPE *in)
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{
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acquire_sem(inUse);
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unused.add(in);
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release_sem(inUse);
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}
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};
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*/
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