read-cache: force split index mode with GIT_TEST_SPLIT_INDEX
This could be used to run the whole test suite with split indexes. Index splitting is carried out at random. "git read-tree" also resets the index and forces splitting at the next update. I had a lot of headaches with the test suite, which proves it exercises split index pretty good. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Nguyễn Thái Ngọc Duy committed
Jun 13, 2014 at 19:19 UTC
d6e3c181bc94e3f540c403eef0515c5eed74fc16
1 file changed
+9
-1
read-cache.c
+9
-1
@@ -1885,8 +1885,11 @@ static int do_write_index(struct index_state *istate, int newfd,
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}
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}
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- if (!istate->version)
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+ if (!istate->version) {
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istate->version = get_index_format_default();
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+ if (getenv("GIT_TEST_SPLIT_INDEX"))
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+ init_split_index(istate);
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+ }
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/* demote version 3 to version 2 when the latter suffices */
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if (istate->version == 3 || istate->version == 2)
@@ -2077,6 +2080,11 @@ int write_locked_index(struct index_state *istate, struct lock_file *lock,
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return do_write_locked_index(istate, lock, flags);
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}
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+ if (getenv("GIT_TEST_SPLIT_INDEX")) {
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+ int v = si->base_sha1[0];
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+ if ((v & 15) < 6)
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+ istate->cache_changed |= SPLIT_INDEX_ORDERED;
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+ }
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if (istate->cache_changed & SPLIT_INDEX_ORDERED) {
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int ret = write_shared_index(istate, lock, flags);
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if (ret)