On Tue, 12 Sep 2023 17:23:00 GMT, 温绍锦 <d...@openjdk.org> wrote:
>> improve date toString performance, includes: >> >> java.util.Date.toString >> java.util.Date.toGMTString >> java.time.Instant.toString >> java.time.LocalDate.toString >> java.time.LocalDateTime.toString >> java.time.LocalTime.toString > > 温绍锦 has updated the pull request incrementally with one additional commit > since the last revision: > > merge from master `LocalTime::getNanoChars(byte[], int, int)` can use `DecimalDigits::digitTriple(int)` instead of a local copy of `DecimalDigits.DIGITS_K`: src/java.base/share/classes/java/time/LocalTime.java line 141: > 139: @Stable > 140: static final int[] DIGITS_K = new int[1000]; > 141: Suggestion: src/java.base/share/classes/java/time/LocalTime.java line 179: > 177: int c3 = i % 10 + '0'; > 178: DIGITS_K[i] = c0 + (c1 << 8) + (c2 << 16) + (c3 << 24); > 179: } Suggestion: src/java.base/share/classes/java/time/LocalTime.java line 1710: > 1708: buf, > 1709: off, > 1710: DIGITS_K[div2] & 0xffffff00 | '.' Suggestion: DecimalDigits.digitTriple(div2) & 0xffffff00 | '.' src/java.base/share/classes/java/time/LocalTime.java line 1722: > 1720: } > 1721: > 1722: v = DIGITS_K[rem2]; Suggestion: v = DecimalDigits.digitTriple(rem2); src/java.base/share/classes/java/time/LocalTime.java line 1724: > 1722: v = DIGITS_K[rem2]; > 1723: } else { > 1724: v = DIGITS_K[div - div2 * 1000]; Suggestion: v = DecimalDigits.digitTriple(div - div2 * 1000); src/java.base/share/classes/java/time/LocalTime.java line 1740: > 1738: buf, > 1739: off, > 1740: DIGITS_K[rem1] & 0xffffff00 | (v >> 24) Suggestion: DecimalDigits.digitTriple(rem1) & 0xffffff00 | (v >> 24) ------------- PR Review: https://git.openjdk.org/jdk/pull/15658#pullrequestreview-1622831447 PR Review Comment: https://git.openjdk.org/jdk/pull/15658#discussion_r1323381033 PR Review Comment: https://git.openjdk.org/jdk/pull/15658#discussion_r1323381182 PR Review Comment: https://git.openjdk.org/jdk/pull/15658#discussion_r1323379816 PR Review Comment: https://git.openjdk.org/jdk/pull/15658#discussion_r1323380364 PR Review Comment: https://git.openjdk.org/jdk/pull/15658#discussion_r1323380525 PR Review Comment: https://git.openjdk.org/jdk/pull/15658#discussion_r1323380651