Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

(fix) 修复时间轮算法多循环低效率问题 #927

Merged
merged 1 commit into from
Jan 30, 2023
Merged

(fix) 修复时间轮算法多循环低效率问题 #927

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
14 changes: 9 additions & 5 deletions jraft-core/src/main/java/com/alipay/sofa/jraft/util/timer/HashedWheelTimer.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -247,11 +247,15 @@ private static HashedWheelBucket[] createWheel(int ticksPerWheel) {
}

private static int normalizeTicksPerWheel(int ticksPerWheel) {
int normalizedTicksPerWheel = 1;
while (normalizedTicksPerWheel < ticksPerWheel) {
normalizedTicksPerWheel <<= 1;
}
return normalizedTicksPerWheel;
// Fixed calculation process to avoid multi-cycle inefficiency
int n = ticksPerWheel - 1;
n |= n >>> 1;
n |= n >>> 2;
n |= n >>> 4;
n |= n >>> 8;
n |= n >>> 16;
// Prevent spillage, 1073741824 = 2^30
return (n < 0) ? 1 : (n >= 1073741824) ? 1073741824 : n + 1;
}

/**
Expand Down