Function BufFileCreateTempInSet

src/backend/storage/file/buffile.c:266–300

* Create a BufFile for a new temporary file (which will expand to become * multiple temporary files if more than MAX_PHYSICAL_FILESIZE bytes are * written to it). * * If interXact is true, the temp file will not be automatically deleted * at end of transaction. * * Note: if interXact is true, the caller had better be calling us in a * memory context, and with a resource owner, that will su

 * transaction boundaries.
 */
BufFile *
BufFileCreateTempInSet(char *operation_name, bool interXact, workfile_set *work_set)
{
	BufFile    *file;
	File		pfile;

	/*
	 * Ensure that temp tablespaces are set up for OpenTemporaryFile to use.
	 * Possibly the caller will have done this already, but it seems useful to
	 * double-check here.  Failure to do this at all would result in the temp
	 * files always getting placed in the default tablespace, which is a
	 * pretty hard-to-detect bug.  Callers may prefer to do it earlier if they
	 * want to be sure that any required catalog access is done in some other
	 * resource context.
	 */
	PrepareTempTablespaces();

	pfile = OpenTemporaryFile(interXact, operation_name);
	Assert(pfile >= 0);

	file = makeBufFile(pfile, operation_name);
	file->isInterXact = interXact;

	/*
	 * Register the file as a "work file", so that the Cloudberry workfile
	 * limits apply to it.
	 */
	file->work_set = work_set;
	FileSetIsWorkfile(pfile);
	RegisterFileWithSet(pfile, work_set);

	SIMPLE_FAULT_INJECTOR("workfile_creation_failure");

	return file;
}

BufFile *
BufFileCreateTemp(char *operation_name, bool interXact)