greenplumn execParallel 源码

2022-08-18
浏览 (346)

greenplumn execParallel 代码

文件路径：/src/include/executor/execParallel.h

/*--------------------------------------------------------------------
 * execParallel.h
 *		POSTGRES parallel execution interface
 *
 * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * IDENTIFICATION
 *		src/include/executor/execParallel.h
 *--------------------------------------------------------------------
 */

#ifndef EXECPARALLEL_H
#define EXECPARALLEL_H

#include "access/parallel.h"
#include "nodes/execnodes.h"
#include "nodes/parsenodes.h"
#include "nodes/plannodes.h"
#include "utils/dsa.h"

typedef struct SharedExecutorInstrumentation SharedExecutorInstrumentation;

typedef struct ParallelExecutorInfo
{
	PlanState  *planstate;		/* plan subtree we're running in parallel */
	ParallelContext *pcxt;		/* parallel context we're using */
	BufferUsage *buffer_usage;	/* points to bufusage area in DSM */
	SharedExecutorInstrumentation *instrumentation; /* optional */
	struct SharedJitInstrumentation *jit_instrumentation;	/* optional */
	dsa_area   *area;			/* points to DSA area in DSM */
	dsa_pointer param_exec;		/* serialized PARAM_EXEC parameters */
	bool		finished;		/* set true by ExecParallelFinish */
	/* These two arrays have pcxt->nworkers_launched entries: */
	shm_mq_handle **tqueue;		/* tuple queues for worker output */
	struct TupleQueueReader **reader;	/* tuple reader/writer support */
} ParallelExecutorInfo;

extern ParallelExecutorInfo *ExecInitParallelPlan(PlanState *planstate,
												  EState *estate, Bitmapset *sendParam, int nworkers,
												  int64 tuples_needed);
extern void ExecParallelCreateReaders(ParallelExecutorInfo *pei);
extern void ExecParallelFinish(ParallelExecutorInfo *pei);
extern void ExecParallelCleanup(ParallelExecutorInfo *pei);
extern void ExecParallelReinitialize(PlanState *planstate,
									 ParallelExecutorInfo *pei, Bitmapset *sendParam);

extern void ParallelQueryMain(dsm_segment *seg, shm_toc *toc);

#endif							/* EXECPARALLEL_H */

相关信息

greenplumn 源码目录

相关文章

greenplumn execExpr 源码

greenplumn execPartition 源码

greenplumn execUtils 源码

greenplumn execdebug 源码

greenplumn execdesc 源码

greenplumn executor 源码

greenplumn functions 源码

greenplumn hashjoin 源码

greenplumn instrument 源码

greenplumn nodeAgg 源码

0 赞

所属分类： 大数据
本文标签： greenplum
版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/e2dbbc4d4b364f82a7256b177157f5c5

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙初识ArkTS语言
6、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
7、 flink kafka connector scan.startup.mode 的几个选项
8、 golang
9、 openharmony
10、 Vue中input框自动聚焦

Loading...