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5b5fea2a11
Rather than passing around DumpOptions and RestoreOptions as separate arguments, add fields to struct Archive to carry pointers to these objects, and access them through those fields when needed. There already was a RestoreOptions pointer in Archive, though for no obvious reason it was part of the "private" struct rather than out where pg_dump.c could see it. Doing this allows reversion of quite a lot of parameter-addition changes made in commit 0eea8047bf, which is a good thing IMO because this will reduce the code delta between 9.4 and 9.5, probably easing a few future back-patch efforts. Moreover, the previous commit only added a DumpOptions argument to functions that had to have it at the time, which means we could anticipate still more code churn (and more back-patch hazard) as the requirement spread further. I'd hit exactly that problem in my upcoming patch to fix extension membership marking, which is what motivated me to do this.
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/*-------------------------------------------------------------------------
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*
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* parallel.h
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*
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* Parallel support header file for the pg_dump archiver
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*
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* Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* The author is not responsible for loss or damages that may
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* result from its use.
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*
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* IDENTIFICATION
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* src/bin/pg_dump/parallel.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PG_DUMP_PARALLEL_H
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#define PG_DUMP_PARALLEL_H
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#include "pg_backup_archiver.h"
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typedef enum
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{
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WRKR_TERMINATED = 0,
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WRKR_IDLE,
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WRKR_WORKING,
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WRKR_FINISHED
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} T_WorkerStatus;
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/* Arguments needed for a worker process */
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typedef struct ParallelArgs
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{
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ArchiveHandle *AH;
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TocEntry *te;
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} ParallelArgs;
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/* State for each parallel activity slot */
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typedef struct ParallelSlot
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{
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ParallelArgs *args;
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T_WorkerStatus workerStatus;
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int status;
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int pipeRead;
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int pipeWrite;
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int pipeRevRead;
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int pipeRevWrite;
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#ifdef WIN32
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uintptr_t hThread;
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unsigned int threadId;
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#else
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pid_t pid;
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#endif
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} ParallelSlot;
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#define NO_SLOT (-1)
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typedef struct ParallelState
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{
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int numWorkers;
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ParallelSlot *parallelSlot;
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} ParallelState;
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#ifdef WIN32
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extern bool parallel_init_done;
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extern DWORD mainThreadId;
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#endif
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extern void init_parallel_dump_utils(void);
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extern int GetIdleWorker(ParallelState *pstate);
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extern bool IsEveryWorkerIdle(ParallelState *pstate);
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extern void ListenToWorkers(ArchiveHandle *AH, ParallelState *pstate, bool do_wait);
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extern int ReapWorkerStatus(ParallelState *pstate, int *status);
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extern void EnsureIdleWorker(ArchiveHandle *AH, ParallelState *pstate);
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extern void EnsureWorkersFinished(ArchiveHandle *AH, ParallelState *pstate);
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extern ParallelState *ParallelBackupStart(ArchiveHandle *AH);
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extern void DispatchJobForTocEntry(ArchiveHandle *AH,
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ParallelState *pstate,
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TocEntry *te, T_Action act);
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extern void ParallelBackupEnd(ArchiveHandle *AH, ParallelState *pstate);
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extern void checkAborting(ArchiveHandle *AH);
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#endif /* PG_DUMP_PARALLEL_H */
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