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Commitefae465

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Update woefully-obsolete comment.
The accurate info about what's in a lock file has been in miscadmin.hfor some time, so let's just make this comment point there instead ofmaintaining a duplicative copy.
1 parentcdf8bcb commitefae465

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‎src/backend/utils/init/miscinit.c

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Original file line numberDiff line numberDiff line change
@@ -629,18 +629,10 @@ GetUserNameFromId(Oid roleid)
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*
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* These routines are used to create both a data-directory lockfile
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* ($DATADIR/postmaster.pid) and a Unix-socket-file lockfile ($SOCKFILE.lock).
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* Both kinds of files contain the same info:
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*
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*Owning process' PID
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*Data directory path
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*
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* By convention, the owning process' PID is negated if it is a standalone
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* backend rather than a postmaster. This is just for informational purposes.
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* The path is also just for informational purposes (so that a socket lockfile
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* can be more easily traced to the associated postmaster).
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*
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* A data-directory lockfile can optionally contain a third line, containing
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* the key and ID for the shared memory block used by this postmaster.
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* Both kinds of files contain the same info initially, although we can add
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* more information to a data-directory lockfile after it's created, using
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* AddToDataDirLockFile(). See miscadmin.h for documentation of the contents
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* of these lockfiles.
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*
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* On successful lockfile creation, a proc_exit callback to remove the
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* lockfile is automatically created.

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