quarkusio#4241 100% CPU in epoll_wait

rvansa · Sep 27, 2019 · c51a26d · c51a26d
1 parent 9b52fcf
commit c51a26d
Showing 1 changed file with 31 additions and 0 deletions.
diff --git a/...nsions/netty/runtime/src/main/java/io/quarkus/netty/runtime/graal/NettySubstitutions.java b/...nsions/netty/runtime/src/main/java/io/quarkus/netty/runtime/graal/NettySubstitutions.java
@@ -284,6 +284,37 @@ private static Queue<Runnable> newTaskQueue0(int maxPendingTasks) {
     }
 }
 
+final class Holder_io_netty_util_concurrent_ScheduledFutureTask {
+    private static long START_TIME = Long.MIN_VALUE;
+
+    static long startTime() {
+        if (START_TIME == Long.MIN_VALUE) {
+            START_TIME = System.nanoTime();
+        }
+        return START_TIME;
+    }
+}
+
+@TargetClass(className = "io.netty.util.concurrent.ScheduledFutureTask")
+final class Target_io_netty_util_concurrent_ScheduledFutureTask {
+
+    @Substitute
+    static long nanoTime() {
+        return System.nanoTime() - Holder_io_netty_util_concurrent_ScheduledFutureTask.startTime();
+    }
+
+    @Alias
+    public long deadlineNanos() {
+        return 0;
+    }
+
+    @Substitute
+    public long delayNanos(long currentTimeNanos) {
+        return Math.max(0,
+                deadlineNanos() - (currentTimeNanos - Holder_io_netty_util_concurrent_ScheduledFutureTask.startTime()));
+    }
+}
+
 class NettySubstitutions {
 
 }