Author: markt
Date: Tue Sep 15 21:10:30 2015
New Revision: 1703290
URL: http://svn.apache.org/r1703290
Log:
Follow-up to r1703177.
Ensure that members never contains an intermediate result of the sorting
process.
Modified:
tomcat/trunk/java/org/apache/catalina/tribes/membership/Membership.java
Modified:
tomcat/trunk/java/org/apache/catalina/tribes/membership/Membership.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/tribes/membership/Membership.java?rev=1703290&r1=1703289&r2=1703290&view=diff
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/tribes/membership/Membership.java
(original)
+++ tomcat/trunk/java/org/apache/catalina/tribes/membership/Membership.java Tue
Sep 15 21:10:30 2015
@@ -66,7 +66,7 @@ public class Membership implements Clone
final HashMap<Member, MbrEntry> tmpclone = (HashMap<Member,
MbrEntry>) map.clone();
clone.map = tmpclone;
clone.members = new Member[members.length];
- System.arraycopy(members,0,clone.members,0,members.length);
+ System.arraycopy(members, 0, clone.members, 0, members.length);
return clone;
}
}
@@ -134,7 +134,12 @@ public class Membership implements Clone
updateMember.setMemberAliveTime(member.getMemberAliveTime());
updateMember.setPayload(member.getPayload());
updateMember.setCommand(member.getCommand());
- Arrays.sort(members, memberComparator);
+ // Re-order. Can't sort in place since a call to
+ // getMembers() may then receive an intermediate result.
+ Member[] newMembers = new Member[members.length];
+ System.arraycopy(members, 0, newMembers, 0,
members.length);
+ Arrays.sort(newMembers, memberComparator);
+ members = newMembers;
}
}
entry.accessed();
@@ -155,12 +160,10 @@ public class Membership implements Clone
if (!map.containsKey(member) ) {
map.put(member, entry);
Member results[] = new Member[members.length + 1];
- for (int i = 0; i < members.length; i++) {
- results[i] = members[i];
- }
+ System.arraycopy(members, 0, results, 0, members.length);
results[members.length] = member;
+ Arrays.sort(results, memberComparator);
members = results;
- Arrays.sort(members, memberComparator);
}
}
return entry;
@@ -247,15 +250,13 @@ public class Membership implements Clone
Member[] members = this.members;
if (members.length > 0) {
Member result = null;
- for (int i = 0; i < members.length && result == null; i++) {
+ for (int i = 0; i < members.length; i++) {
if (members[i].equals(mbr)) {
- result = members[i];
+ return result;
}
}
- return result;
- } else {
- return null;
}
+ return null;
}
public boolean contains(Member mbr) {
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