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pack-revindex: introduce GIT_TEST_REV_INDEX_DIE_ON_DISK 

In ec8e7760ac (pack-revindex: ensure that on-disk reverse indexes are
given precedence, 2021-01-25), we introduced
GIT_TEST_REV_INDEX_DIE_IN_MEMORY to abort the process when Git generated
a reverse index from scratch.

ec8e7760ac was about ensuring that Git prefers a .rev file when
available over generating the same information in memory from scratch.

In a subsequent patch, we'll introduce `pack.readReverseIndex`, which
may be used to disable reading ".rev" files when available. In order to
ensure that those files are indeed being ignored, introduce an analogous
option to abort the process when Git reads a ".rev" file from disk.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Acked-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Taylor Blau 2023-04-12 18:20:27 -04:00 committed by Junio C Hamano
parent 65308ad8f7
commit 2a250d6165
2 changed files with 4 additions and 0 deletions
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3
pack-revindex.c
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@ -205,6 +205,9 @@ static int load_revindex_from_disk(char *revindex_name,
size_t revindex_size;
struct revindex_header *hdr;
if (git_env_bool(GIT_TEST_REV_INDEX_DIE_ON_DISK, 0))
die("dying as requested by '%s'", GIT_TEST_REV_INDEX_DIE_ON_DISK);
fd = git_open(revindex_name);
if (fd < 0) {

1
pack-revindex.h
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@ -36,6 +36,7 @@
#define GIT_TEST_WRITE_REV_INDEX "GIT_TEST_WRITE_REV_INDEX"
#define GIT_TEST_REV_INDEX_DIE_IN_MEMORY "GIT_TEST_REV_INDEX_DIE_IN_MEMORY"
#define GIT_TEST_REV_INDEX_DIE_ON_DISK "GIT_TEST_REV_INDEX_DIE_ON_DISK"
struct packed_git;
struct multi_pack_index;