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| author | Karsten Blees <karsten.blees@gmail.com> | 2014-07-03 00:22:54 +0200 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2014-07-07 13:56:38 -0700 |
| commit | 7b64d42d22206d9995a8f0cb3b515e623cac4702 (patch) | |
| tree | 26895c5fde113b1d84f52409f951feb37f451412 /t/t0011-hashmap.sh | |
| parent | ab73a9d119240b0b908ccb9edd19b8e536ce29b9 (diff) | |
| download | git-7b64d42d22206d9995a8f0cb3b515e623cac4702.tar.gz git-7b64d42d22206d9995a8f0cb3b515e623cac4702.tar.xz | |
hashmap: add string interning API
Interning short strings with high probability of duplicates can reduce the
memory footprint and speed up comparisons.
Add strintern() and memintern() APIs that use a hashmap to manage the pool
of unique, interned strings.
Note: strintern(getenv()) could be used to sanitize git's use of getenv(),
in case we ever encounter a platform where a call to getenv() invalidates
previous getenv() results (which is allowed by POSIX).
Signed-off-by: Karsten Blees <blees@dcon.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t0011-hashmap.sh')
| -rwxr-xr-x | t/t0011-hashmap.sh | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/t/t0011-hashmap.sh b/t/t0011-hashmap.sh index 391e2b649..f97c80556 100755 --- a/t/t0011-hashmap.sh +++ b/t/t0011-hashmap.sh @@ -237,4 +237,17 @@ test_expect_success 'grow / shrink' ' ' +test_expect_success 'string interning' ' + +test_hashmap "intern value1 +intern Value1 +intern value2 +intern value2 +" "value1 +Value1 +value2 +value2" + +' + test_done |