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Provide for parallel restoration from a custom format archive. Each data and

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post-data step is run in a separate worker child (a thread on Windows, a child
process elsewhere) up to the concurrent number specified by the new pg_restore
command-line --multi-thread | -m switch.

Andrew Dunstan, with some editing by Tom Lane.
This commit is contained in:
Andrew Dunstan
2009-02-02 20:07:37 +00:00
parent 3a5b773715
commit 775f1b379e
11 changed files with 1509 additions and 276 deletions
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6
src/bin/pg_dump/pg_backup_tar.c
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@@ -16,7 +16,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_backup_tar.c,v 1.62 2007/11/15 21:14:41 momjian Exp $
* $PostgreSQL: pgsql/src/bin/pg_dump/pg_backup_tar.c,v 1.63 2009/02/02 20:07:37 adunstan Exp $
*
*-------------------------------------------------------------------------
*/
@@ -143,6 +143,7 @@ InitArchiveFmt_Tar(ArchiveHandle *AH)
AH->WriteBufPtr = _WriteBuf;
AH->ReadBufPtr = _ReadBuf;
AH->ClosePtr = _CloseArchive;
AH->ReopenPtr = NULL;
AH->PrintTocDataPtr = _PrintTocData;
AH->ReadExtraTocPtr = _ReadExtraToc;
AH->WriteExtraTocPtr = _WriteExtraToc;
@@ -152,6 +153,8 @@ InitArchiveFmt_Tar(ArchiveHandle *AH)
AH->StartBlobPtr = _StartBlob;
AH->EndBlobPtr = _EndBlob;
AH->EndBlobsPtr = _EndBlobs;
AH->ClonePtr = NULL;
AH->DeClonePtr = NULL;
/*
* Set up some special context used in compressing data.
@@ -1383,5 +1386,4 @@ _tarWriteHeader(TAR_MEMBER *th)
if (fwrite(h, 1, 512, th->tarFH) != 512)
die_horribly(th->AH, modulename, "could not write to output file: %s\n", strerror(errno));
}