22 lines
1 KiB
C
22 lines
1 KiB
C
#ifndef ALLOCATION_POLICY_H
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#define ALLOCATION_POLICY_H
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struct allocationPolicy;
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typedef struct allocationPolicy allocationPolicy;
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typedef struct availablePage {
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int freespace;
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int pageid;
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int lockCount; // Number of active transactions that have alloced or dealloced from this page.
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} availablePage;
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allocationPolicy * allocationPolicyInit();
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void allocationPolicyDeinit(allocationPolicy * ap);
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void allocationPolicyAddPages(allocationPolicy * ap, availablePage** newPages);
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availablePage * allocationPolicyFindPage(allocationPolicy * ap, int xid, int freespace);
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void allocationPolicyTransactionCompleted(allocationPolicy * ap, int xid);
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void allocationPolicyUpdateFreespaceUnlockedPage(allocationPolicy * ap, availablePage * key, int newFree);
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void allocationPolicyUpdateFreespaceLockedPage(allocationPolicy * ap, int xid, availablePage * key, int newFree);
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void allocationPolicyLockPage(allocationPolicy * ap, int xid, int pageid);
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void allocationPolicyAllocedFromPage(allocationPolicy * ap, int xid, int pageid);
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#endif // ALLOCATION_POLICY_H
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