diff options
Diffstat (limited to 'include')
| -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 */ |