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| author | kcwu <kcwu@63ad8ddf-47c3-0310-b6dd-a9e9d9715204> | 2005-02-05 05:08:15 +0800 |
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| committer | kcwu <kcwu@63ad8ddf-47c3-0310-b6dd-a9e9d9715204> | 2005-02-05 05:08:15 +0800 |
| commit | cc14ad9eb6c9b6674f83b270c64e3890ef50260a (patch) | |
| tree | 29d873f0e9ec0f3130bd5a8febd7144a098b2a85 | |
| parent | 04a881b70f823968a940e1337d04f6feca3878c4 (diff) | |
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comment on questionable comment
git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@2464 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
| -rw-r--r-- | include/pttstruct.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/pttstruct.h b/include/pttstruct.h index 8a1c05a3..8d9d1e27 100644 --- a/include/pttstruct.h +++ b/include/pttstruct.h @@ -438,7 +438,10 @@ typedef struct keeploc_t { #define VALID_USHM_ENTRY(X) ((X) >= 0 && (X) < USHM_SIZE) #define USHM_SIZE (MAX_ACTIVE + 4) /* USHM_SIZE 比 MAX_ACTIVE 大是為了防止檢查人數上限時, 又同時衝進來 - * 會造成找 shm 空位的無窮迴圈. 又, 因 USHM 中用 hash, 空間稍大時效率較好. */ + * 會造成找 shm 空位的無窮迴圈. + * -> 若是這樣, +4 夠嗎? + * 又, 因 USHM 中用 hash, 空間稍大時效率較好. + * -> 若是因為 hashing, slot 也許要更多, 譬如兩倍? */ /* MAX_BMs is dirty hardcode 4 in mbbsd/cache.c:is_BM_cache() */ #define MAX_BMs 4 /* for BMcache, 一個看板最多幾板主 */ |