71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/*-------------------------------------------------------------------------
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*
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* parallel.h
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*
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* Parallel support for pg_dump and pg_restore
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*
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* Portions Copyright (c) 1996-2020, 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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* 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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/* Function to call in master process on completion of a worker task */
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typedef void (*ParallelCompletionPtr) (ArchiveHandle *AH,
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TocEntry *te,
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int status,
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void *callback_data);
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/* Wait options for WaitForWorkers */
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typedef enum
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{
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WFW_NO_WAIT,
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WFW_GOT_STATUS,
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WFW_ONE_IDLE,
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WFW_ALL_IDLE
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} WFW_WaitOption;
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/* ParallelSlot is an opaque struct known only within parallel.c */
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typedef struct ParallelSlot ParallelSlot;
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/* Overall state for parallel.c */
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typedef struct ParallelState
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{
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int numWorkers; /* allowed number of workers */
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/* these arrays have numWorkers entries, one per worker: */
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TocEntry **te; /* item being worked on, or NULL */
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ParallelSlot *parallelSlot; /* private info about each worker */
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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 bool IsEveryWorkerIdle(ParallelState *pstate);
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extern void WaitForWorkers(ArchiveHandle *AH, ParallelState *pstate,
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WFW_WaitOption mode);
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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,
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T_Action act,
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ParallelCompletionPtr callback,
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void *callback_data);
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extern void ParallelBackupEnd(ArchiveHandle *AH, ParallelState *pstate);
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extern void set_archive_cancel_info(ArchiveHandle *AH, PGconn *conn);
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#endif /* PG_DUMP_PARALLEL_H */
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