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[PATCH 03/20] setup_temporary_shallow: move tempfile struct into function

From
Jeff King <peff@peff.net>
Date
Sep 5, 2017, 12:14 UTC
Message-ID
<20170905121419.kghzrffwgvuvrwaf@sigill.intra.peff.net>
In-Reply-To
<20170905121353.62zg3mtextmq5zrs@sigill.intra.peff.net>

The setup_temporary_shallow() function creates a temporary file, but we never access the tempfile struct outside of the function. This is OK, since it means we'll just clean up the tempfile on exit. But we can simplify the code a bit by moving the global tempfile struct to the only function in which it's used.

Note that it must remain "static" due to tempfile.c's requirement that tempfile storage never goes away until program exit.

Signed-off-by: Jeff King <peff@peff.net>
---
 shallow.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/shallow.c b/shallow.c
index 29194b475a..c7fd68ace0 100644
--- a/shallow.c
+++ b/shallow.c
@@ -286,22 +286,21 @@ int write_shallow_commits(struct strbuf *out, int use_pack_protocol,
 	return write_shallow_commits_1(out, use_pack_protocol, extra, 0);
 }
 
-static struct tempfile temporary_shallow;
-
 const char *setup_temporary_shallow(const struct oid_array *extra)
 {
+	static struct tempfile temp;
 	struct strbuf sb = STRBUF_INIT;
 	int fd;
 
 	if (write_shallow_commits(&sb, 0, extra)) {
-		fd = xmks_tempfile(&temporary_shallow, git_path("shallow_XXXXXX"));
+		fd = xmks_tempfile(&temp, git_path("shallow_XXXXXX"));
 
 		if (write_in_full(fd, sb.buf, sb.len) != sb.len)
 			die_errno("failed to write to %s",
-				  get_tempfile_path(&temporary_shallow));
-		close_tempfile(&temporary_shallow);
+				  get_tempfile_path(&temp));
+		close_tempfile(&temp);
 		strbuf_release(&sb);
-		return get_tempfile_path(&temporary_shallow);
+		return get_tempfile_path(&temp);
 	}
 	/*
 	 * is_repository_shallow() sees empty string as "no shallow
-- 
2.14.1.721.gc5bc1565f1
Previous: Jeff KingNext: Jeff King
Message 4 of 21 in “allowing struct lock_file to be deleted”
  1. 0/20 allowing struct lock_file to be deletedJeff King, Sep 5, 2017
  2. 01/20 write_index_as_tree: cleanup tempfile on errorJeff King, Sep 5, 2017
  3. 02/20 setup_temporary_shallow: avoid using inactive tempfileJeff King, Sep 5, 2017
  4. 03/20 setup_temporary_shallow: move tempfile struct into functionJeff King, Sep 5, 2017
  5. 04/20 verify_signed_buffer: prefer close_tempfile() to close()Jeff King, Sep 5, 2017
  6. 05/20 always check return value of close_tempfileJeff King, Sep 5, 2017
  7. 06/20 tempfile: do not delete tempfile on failed closeJeff King, Sep 5, 2017
  8. 07/20 lockfile: do not rollback lock on failed closeJeff King, Sep 5, 2017
  9. 08/20 tempfile: prefer is_tempfile_active to bare accessJeff King, Sep 5, 2017
  10. 09/20 tempfile: handle NULL tempfile pointers gracefullyJeff King, Sep 5, 2017
  11. 10/20 tempfile: replace die("BUG") with BUG()Jeff King, Sep 5, 2017
  12. 11/20 tempfile: factor out activationJeff King, Sep 5, 2017
  13. 12/20 tempfile: factor out deactivationJeff King, Sep 5, 2017
  14. 13/20 tempfile: robustify cleanup handlerJeff King, Sep 5, 2017
  15. 14/20 tempfile: release deactivated strbufs instead of resettingJeff King, Sep 5, 2017
  16. 16/20 tempfile: remove deactivated list entriesJeff King, Sep 5, 2017
  17. 17/20 tempfile: auto-allocate tempfiles on heapJeff King, Sep 5, 2017
  18. 18/20 lockfile: update lifetime requirements in documentationJeff King, Sep 5, 2017
  19. 19/20 ref_lock: stop leaking lock_filesJeff King, Sep 5, 2017
  20. 20/20 stop leaking lock structs in some simple casesJeff King, Sep 5, 2017
  21. 15/20 tempfile: use list.h for linked listJeff King, Sep 5, 2017

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