8230943: False deadlock detection with -XX:+CIPrintCompileQueue after JDK-8163511
Reviewed-by: dholmes, thartmann
--- a/src/hotspot/share/compiler/compileBroker.cpp Tue Sep 17 11:07:07 2019 +0000
+++ b/src/hotspot/share/compiler/compileBroker.cpp Tue Sep 17 20:38:23 2019 +0800
@@ -557,8 +557,14 @@
}
void CompileQueue::print_tty() {
- ttyLocker ttyl;
- print(tty);
+ ResourceMark rm;
+ stringStream ss;
+ // Dump the compile queue into a buffer before locking the tty
+ print(&ss);
+ {
+ ttyLocker ttyl;
+ tty->print("%s", ss.as_string());
+ }
}
CompilerCounters::CompilerCounters() {
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/compiler/print/PrintCompileQueue.java Tue Sep 17 20:38:23 2019 +0800
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2019, Loongson Technology Co. Ltd. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8230943
+ * @summary possible deadlock was detected when ran with -XX:+CIPrintCompileQueue
+ * @run main/othervm -Xcomp -XX:+UnlockDiagnosticVMOptions -XX:+CIPrintCompileQueue
+ * compiler.print.PrintCompileQueue
+ *
+ */
+
+package compiler.print;
+
+public class PrintCompileQueue {
+ public static void main(String[] args) {
+ System.out.println("Passed");
+ }
+}