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authorJunio C Hamano <gitster@pobox.com>2011-12-19 16:05:20 -0800
committerJunio C Hamano <gitster@pobox.com>2011-12-19 16:05:20 -0800
commit33e7fefef6b68b300870e04904ad1db48be9b580 (patch)
tree2ec6cf691b2f86aa0830c6f2927ac661bf3db87e
parent367d20ec6b9e8e297537f665fb528346bd0aff27 (diff)
parent6c52ec8a9ab48b50fc8bf9559467d5a4cf7eee3b (diff)
downloadgit-33e7fefef6b68b300870e04904ad1db48be9b580.tar.gz
Merge branch 'tr/cache-tree'
* tr/cache-tree: reset: update cache-tree data when appropriate commit: write cache-tree data when writing index anyway Refactor cache_tree_update idiom from commit Test the current state of the cache-tree optimization Add test-scrap-cache-tree
-rw-r--r--.gitignore1
-rw-r--r--Makefile1
-rw-r--r--builtin/commit.c7
-rw-r--r--builtin/reset.c7
-rw-r--r--cache-tree.c19
-rw-r--r--cache-tree.h4
-rw-r--r--merge-recursive.c2
-rwxr-xr-xt/t0090-cache-tree.sh95
-rw-r--r--test-dump-cache-tree.c2
-rw-r--r--test-scrap-cache-tree.c17
10 files changed, 144 insertions, 11 deletions
diff --git a/.gitignore b/.gitignore
index 2b7a3f9876..3b7680ea1e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -175,6 +175,7 @@
/test-date
/test-delta
/test-dump-cache-tree
+/test-scrap-cache-tree
/test-genrandom
/test-index-version
/test-line-buffer
diff --git a/Makefile b/Makefile
index 2127c1bd15..898278d58b 100644
--- a/Makefile
+++ b/Makefile
@@ -439,6 +439,7 @@ TEST_PROGRAMS_NEED_X += test-ctype
TEST_PROGRAMS_NEED_X += test-date
TEST_PROGRAMS_NEED_X += test-delta
TEST_PROGRAMS_NEED_X += test-dump-cache-tree
+TEST_PROGRAMS_NEED_X += test-scrap-cache-tree
TEST_PROGRAMS_NEED_X += test-genrandom
TEST_PROGRAMS_NEED_X += test-index-version
TEST_PROGRAMS_NEED_X += test-line-buffer
diff --git a/builtin/commit.c b/builtin/commit.c
index f73ef9c86d..039c04fe9d 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -395,6 +395,7 @@ static char *prepare_index(int argc, const char **argv, const char *prefix,
fd = hold_locked_index(&index_lock, 1);
add_files_to_cache(also ? prefix : NULL, pathspec, 0);
refresh_cache_or_die(refresh_flags);
+ update_main_cache_tree(1);
if (write_cache(fd, active_cache, active_nr) ||
close_lock_file(&index_lock))
die(_("unable to write new_index file"));
@@ -415,6 +416,7 @@ static char *prepare_index(int argc, const char **argv, const char *prefix,
fd = hold_locked_index(&index_lock, 1);
refresh_cache_or_die(refresh_flags);
if (active_cache_changed) {
+ update_main_cache_tree(1);
if (write_cache(fd, active_cache, active_nr) ||
commit_locked_index(&index_lock))
die(_("unable to write new_index file"));
@@ -863,10 +865,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
*/
discard_cache();
read_cache_from(index_file);
- if (!active_cache_tree)
- active_cache_tree = cache_tree();
- if (cache_tree_update(active_cache_tree,
- active_cache, active_nr, 0, 0) < 0) {
+ if (update_main_cache_tree(0)) {
error(_("Error building trees"));
return 0;
}
diff --git a/builtin/reset.c b/builtin/reset.c
index 811e8e252c..8c2c1d52a2 100644
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -43,6 +43,7 @@ static int reset_index_file(const unsigned char *sha1, int reset_type, int quiet
int nr = 1;
int newfd;
struct tree_desc desc[2];
+ struct tree *tree;
struct unpack_trees_options opts;
struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
@@ -84,6 +85,12 @@ static int reset_index_file(const unsigned char *sha1, int reset_type, int quiet
return error(_("Failed to find tree of %s."), sha1_to_hex(sha1));
if (unpack_trees(nr, desc, &opts))
return -1;
+
+ if (reset_type == MIXED || reset_type == HARD) {
+ tree = parse_tree_indirect(sha1);
+ prime_cache_tree(&active_cache_tree, tree);
+ }
+
if (write_cache(newfd, active_cache, active_nr) ||
commit_locked_index(lock))
return error(_("Could not write new index file."));
diff --git a/cache-tree.c b/cache-tree.c
index f755590da8..8de39590d5 100644
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -150,7 +150,7 @@ void cache_tree_invalidate_path(struct cache_tree *it, const char *path)
}
static int verify_cache(struct cache_entry **cache,
- int entries)
+ int entries, int silent)
{
int i, funny;
@@ -159,6 +159,8 @@ static int verify_cache(struct cache_entry **cache,
for (i = 0; i < entries; i++) {
struct cache_entry *ce = cache[i];
if (ce_stage(ce) || (ce->ce_flags & CE_INTENT_TO_ADD)) {
+ if (silent)
+ return -1;
if (10 < ++funny) {
fprintf(stderr, "...\n");
break;
@@ -370,10 +372,11 @@ int cache_tree_update(struct cache_tree *it,
struct cache_entry **cache,
int entries,
int missing_ok,
- int dryrun)
+ int dryrun,
+ int silent)
{
int i;
- i = verify_cache(cache, entries);
+ i = verify_cache(cache, entries, silent);
if (i)
return i;
i = update_one(it, cache, entries, "", 0, missing_ok, dryrun);
@@ -573,7 +576,7 @@ int write_cache_as_tree(unsigned char *sha1, int flags, const char *prefix)
if (cache_tree_update(active_cache_tree,
active_cache, active_nr,
- missing_ok, 0) < 0)
+ missing_ok, 0, 0) < 0)
return WRITE_TREE_UNMERGED_INDEX;
if (0 <= newfd) {
if (!write_cache(newfd, active_cache, active_nr) &&
@@ -668,3 +671,11 @@ int cache_tree_matches_traversal(struct cache_tree *root,
return it->entry_count;
return 0;
}
+
+int update_main_cache_tree (int silent)
+{
+ if (!the_index.cache_tree)
+ the_index.cache_tree = cache_tree();
+ return cache_tree_update(the_index.cache_tree,
+ the_index.cache, the_index.cache_nr, 0, 0, silent);
+}
diff --git a/cache-tree.h b/cache-tree.h
index 3df641f593..0ec0b2a159 100644
--- a/cache-tree.h
+++ b/cache-tree.h
@@ -29,7 +29,9 @@ void cache_tree_write(struct strbuf *, struct cache_tree *root);
struct cache_tree *cache_tree_read(const char *buffer, unsigned long size);
int cache_tree_fully_valid(struct cache_tree *);
-int cache_tree_update(struct cache_tree *, struct cache_entry **, int, int, int);
+int cache_tree_update(struct cache_tree *, struct cache_entry **, int, int, int, int);
+
+int update_main_cache_tree(int);
/* bitmasks to write_cache_as_tree flags */
#define WRITE_TREE_MISSING_OK 1
diff --git a/merge-recursive.c b/merge-recursive.c
index 5a2db296b8..d83cd6c662 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -264,7 +264,7 @@ struct tree *write_tree_from_memory(struct merge_options *o)
if (!cache_tree_fully_valid(active_cache_tree) &&
cache_tree_update(active_cache_tree,
- active_cache, active_nr, 0, 0) < 0)
+ active_cache, active_nr, 0, 0, 0) < 0)
die("error building trees");
result = lookup_tree(active_cache_tree->sha1);
diff --git a/t/t0090-cache-tree.sh b/t/t0090-cache-tree.sh
new file mode 100755
index 0000000000..f97256292e
--- /dev/null
+++ b/t/t0090-cache-tree.sh
@@ -0,0 +1,95 @@
+#!/bin/sh
+
+test_description="Test whether cache-tree is properly updated
+
+Tests whether various commands properly update and/or rewrite the
+cache-tree extension.
+"
+ . ./test-lib.sh
+
+cmp_cache_tree () {
+ test-dump-cache-tree >actual &&
+ sed "s/$_x40/SHA/" <actual >filtered &&
+ test_cmp "$1" filtered
+}
+
+# We don't bother with actually checking the SHA1:
+# test-dump-cache-tree already verifies that all existing data is
+# correct.
+test_shallow_cache_tree () {
+ echo "SHA " \
+ "($(git ls-files|wc -l) entries, 0 subtrees)" >expect &&
+ cmp_cache_tree expect
+}
+
+test_invalid_cache_tree () {
+ echo "invalid (0 subtrees)" >expect &&
+ echo "SHA #(ref) " \
+ "($(git ls-files|wc -l) entries, 0 subtrees)" >>expect &&
+ cmp_cache_tree expect
+}
+
+test_no_cache_tree () {
+ : >expect &&
+ cmp_cache_tree expect
+}
+
+test_expect_failure 'initial commit has cache-tree' '
+ test_commit foo &&
+ test_shallow_cache_tree
+'
+
+test_expect_success 'read-tree HEAD establishes cache-tree' '
+ git read-tree HEAD &&
+ test_shallow_cache_tree
+'
+
+test_expect_success 'git-add invalidates cache-tree' '
+ test_when_finished "git reset --hard; git read-tree HEAD" &&
+ echo "I changed this file" > foo &&
+ git add foo &&
+ test_invalid_cache_tree
+'
+
+test_expect_success 'update-index invalidates cache-tree' '
+ test_when_finished "git reset --hard; git read-tree HEAD" &&
+ echo "I changed this file" > foo &&
+ git update-index --add foo &&
+ test_invalid_cache_tree
+'
+
+test_expect_success 'write-tree establishes cache-tree' '
+ test-scrap-cache-tree &&
+ git write-tree &&
+ test_shallow_cache_tree
+'
+
+test_expect_success 'test-scrap-cache-tree works' '
+ git read-tree HEAD &&
+ test-scrap-cache-tree &&
+ test_no_cache_tree
+'
+
+test_expect_success 'second commit has cache-tree' '
+ test_commit bar &&
+ test_shallow_cache_tree
+'
+
+test_expect_success 'reset --hard gives cache-tree' '
+ test-scrap-cache-tree &&
+ git reset --hard &&
+ test_shallow_cache_tree
+'
+
+test_expect_success 'reset --hard without index gives cache-tree' '
+ rm -f .git/index &&
+ git reset --hard &&
+ test_shallow_cache_tree
+'
+
+test_expect_failure 'checkout gives cache-tree' '
+ git checkout HEAD^ &&
+ test_shallow_cache_tree
+'
+
+test_done
diff --git a/test-dump-cache-tree.c b/test-dump-cache-tree.c
index 1f73f1ea7d..e6c292385f 100644
--- a/test-dump-cache-tree.c
+++ b/test-dump-cache-tree.c
@@ -59,6 +59,6 @@ int main(int ac, char **av)
struct cache_tree *another = cache_tree();
if (read_cache() < 0)
die("unable to read index file");
- cache_tree_update(another, active_cache, active_nr, 0, 1);
+ cache_tree_update(another, active_cache, active_nr, 0, 1, 0);
return dump_cache_tree(active_cache_tree, another, "");
}
diff --git a/test-scrap-cache-tree.c b/test-scrap-cache-tree.c
new file mode 100644
index 0000000000..4728013910
--- /dev/null
+++ b/test-scrap-cache-tree.c
@@ -0,0 +1,17 @@
+#include "cache.h"
+#include "tree.h"
+#include "cache-tree.h"
+
+static struct lock_file index_lock;
+
+int main(int ac, char **av)
+{
+ int fd = hold_locked_index(&index_lock, 1);
+ if (read_cache() < 0)
+ die("unable to read index file");
+ active_cache_tree = NULL;
+ if (write_cache(fd, active_cache, active_nr)
+ || commit_lock_file(&index_lock))
+ die("unable to write index file");
+ return 0;
+}