| commit | 7b64d42d22206d9995a8f0cb3b515e623cac4702 | |
| author | Karsten Blees <karsten.blees@gmail.com> | |
| Wed, 2 Jul 2014 22:22:54 +0000 (3 00:22 +0200) | ||
| committer | Junio C Hamano <gitster@pobox.com> | |
| Mon, 7 Jul 2014 20:56:38 +0000 (7 13:56 -0700) | ||
| tree | 26895c5fde113b1d84f52409f951feb37f451412 | treesnapshot (tar.gz zip) |
| parent | ab73a9d119240b0b908ccb9edd19b8e536ce29b9 | commitdiff |
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>
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>
| Documentation/technical/api-hashmap.txt | diffblobblamehistory | |
| hashmap.c | diffblobblamehistory | |
| hashmap.h | diffblobblamehistory | |
| t/t0011-hashmap.sh | diffblobblamehistory | |
| test-hashmap.c | diffblobblamehistory |