It is the 2nd attempt to fix
JDK-8303133 Update ProcessTools.startProcess(...) to exit early if process exit before linePredicate is printed.

The first fix failed because it run
Utils.waitForCondition(BooleanSupplier condition, long timeout, long sleepTime) { ..}
with 0 as no timeout and not -1 as required.

Might it is needed to update waitForCondition to us 0 for this to be java compliant.

the additional diff is:
diff --git a/test/lib/jdk/test/lib/process/ProcessTools.java b/test/lib/jdk/test/lib/process/ProcessTools.java
index 33f326f27e5..a7de64ca2ed 100644
--- a/test/lib/jdk/test/lib/process/ProcessTools.java
+++ b/test/lib/jdk/test/lib/process/ProcessTools.java
@@ -216,9 +216,11 @@ public final class ProcessTools {

         try {
             if (timeout > -1) {
+
+ long timeoutMs = timeout == 0 ? -1: unit.toMillis(Utils.adjustTimeout(timeout));
                 // Every second check if line is printed and if process is still alive
                 Utils.waitForCondition(() -> latch.getCount() == 0 || !p.isAlive(),
- unit.toMillis(Utils.adjustTimeout(timeout)), 1000);
+ timeoutMs , 1000);

                 if (latch.getCount() > 0) {
                     if (!p.isAlive()) {