[GR-65348] Improve systemic compilation failure warning

PullRequest: graal/20912

Author: dougxc

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/core/CompilationWrapper.java

@@ -38,6 +38,8 @@
 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.PrintStream;
+import java.io.PrintWriter;
+import java.io.StringWriter;
 import java.util.Formatter;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
@@ -493,8 +495,11 @@ private static boolean detectCompilationFailureRateTooHigh(OptionValues options,
                             failed, total, rate, TimeUnit.NANOSECONDS.toMillis(periodNS), option, maxRateValue);
             msg.format("To mitigate systemic compilation failure detection, set %s to a higher value. ", option);
             msg.format("To disable systemic compilation failure detection, set %s to 0. ", option);
-            msg.format("To get more information on compilation failures, set %s to Print or Diagnose. ", GraalCompilerOptions.CompilationFailureAction.getName());
+            StringWriter sw = new StringWriter();
+            cause.printStackTrace(new PrintWriter(sw));
+            msg.format("Current failure: %s", sw);
             TTY.println(msg.toString());
+
             if (maxRateValue < 0) {
                 // A negative value means the VM should be exited
                 return true;

compiler/src/jdk.graal.compiler/src/jdk/graal/compiler/core/GraalCompilerOptions.java

@@ -78,7 +78,7 @@ Emit a heap dump after each phase matching the given phase filter(s).
                    "CompilationFailureAction before changing to a less verbose action. " +
                    "This does not apply to the ExitVM action..", type = OptionType.User)
     public static final OptionKey<Integer> MaxCompilationProblemsPerAction = new OptionKey<>(2);
-    @Option(help = "Specifies the compilation failure rate that indicates a systemic compilation problem (and a resulting warning). " +
+    @Option(help = "Specifies the compilation failure rate that indicates a systemic compilation problem. " +
                    "The value is made absolute and clamped to produce P, a value between 0 and 100. " +
                    "Systemic failure is detected if the percentage of failing compilations in a sliding time window >= P. " +
                    "A negative value will cause the VM to exit after issuing the warning. Set to 0 to disable systemic compilation problem detection.", type = OptionType.User)