/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*-------------------------------------------------------------------------
 *
 * nodeShareInputScan.h
 *
 * Portions Copyright (c) 2007-2008, Greenplum inc
 * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 *-------------------------------------------------------------------------
 */
#ifndef NODESHAREINPUTSCAN_H
#define NODESHAREINPUTSCAN_H

#include "nodes/execnodes.h"
#include "executor/nodeMaterial.h"

extern int ExecCountSlotsShareInputScan(ShareInputScan* node);
extern ShareInputScanState *ExecInitShareInputScan(ShareInputScan *node, EState *estate, int eflags);
extern TupleTableSlot *ExecShareInputScan(ShareInputScanState *node);
extern void ExecEndShareInputScan(ShareInputScanState *node);
extern void ExecShareInputScanMarkPos(ShareInputScanState *node);
extern void ExecShareInputScanRestrPos(ShareInputScanState *node);
extern void ExecShareInputScanReScan(ShareInputScanState *node, ExprContext *exprCtxt);
extern void ExecEagerFreeShareInputScan(ShareInputScanState *node);

extern void ExecSliceDependencyShareInputScan(ShareInputScanState *node);

enum {
	GPMON_SHAREINPUT_RESTOREPOS = GPMON_QEXEC_M_NODE_START,
	GPMON_SHAREINPUT_RESCAN,
	GPMON_SHAREINPUT_TOTAL,
};

static inline gpmon_packet_t * GpmonPktFromShareInputState(ShareInputScanState *node)
{
	return &node->ss.ps.gpmon_pkt;
}

extern void generate_lock_file_name(char* p, int size, int share_id, const char* name);
#endif   /* NODESHAREINPUTSCAN_H */