greenplumn checksum 代码
文件路径：/src/backend/storage/page/checksum.c
/*-------------------------------------------------------------------------
*
* checksum.c
* Checksum implementation for data pages.
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* src/backend/storage/page/checksum.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "storage/checksum.h"
/*
* The actual code is in storage/checksum_impl.h. This is done so that
* external programs can incorporate the checksum code by #include'ing
* that file from the exported Postgres headers. (Compare our CRC code.)
*/
#include "storage/checksum_impl.h"