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/*-------------------------------------------------------------------------
* lockwaitpolicy.h
* Header file for LockWaitPolicy enum.
*
* Copyright (c) 2014, PostgreSQL Global Development Group
*
* src/include/utils/lockwaitpolicy.h
*-------------------------------------------------------------------------
*/
#ifndef LOCKWAITPOLICY_H
#define LOCKWAITPOLICY_H
/*
* This enum controls how to deal with rows being locked by FOR UPDATE/SHARE
* clauses (i.e., NOWAIT and SKIP LOCKED clauses). The ordering here is
* important, because the highest numerical value takes precedence when a
* RTE is specified multiple ways. See applyLockingClause.
*/
typedef enum
{
/* Wait for the lock to become available (default behavior) */
LockWaitBlock,
/* Skip rows that can't be locked (SKIP LOCKED) */
LockWaitSkip,
/* Raise an error if a row cannot be locked (NOWAIT) */
LockWaitError
} LockWaitPolicy;
#endif /* LOCKWAITPOLICY_H */
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