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aafc05de1b
Introduce new postmaster_child_launch() function that deals with the differences in EXEC_BACKEND mode. Refactor the mechanism of passing information from the parent to child process. Instead of using different command-line arguments when launching the child process in EXEC_BACKEND mode, pass a variable-length blob of startup data along with all the global variables. The contents of that blob depend on the kind of child process being launched. In !EXEC_BACKEND mode, we use the same blob, but it's simply inherited from the parent to child process. Reviewed-by: Tristan Partin, Andres Freund Discussion: https://www.postgresql.org/message-id/7a59b073-5b5b-151e-7ed3-8b01ff7ce9ef@iki.fi
24 lines
680 B
C
24 lines
680 B
C
/*-------------------------------------------------------------------------
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*
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* walwriter.h
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* Exports from postmaster/walwriter.c.
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*
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* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
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*
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* src/include/postmaster/walwriter.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef _WALWRITER_H
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#define _WALWRITER_H
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#define DEFAULT_WAL_WRITER_FLUSH_AFTER ((1024 * 1024) / XLOG_BLCKSZ)
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/* GUC options */
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extern PGDLLIMPORT int WalWriterDelay;
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extern PGDLLIMPORT int WalWriterFlushAfter;
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extern void WalWriterMain(char *startup_data, size_t startup_data_len) pg_attribute_noreturn();
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#endif /* _WALWRITER_H */
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