--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/serviceability/tmtools/jstat/utils/JstatGcCauseResults.java	Thu Jan 14 15:35:21 2016 +0300
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. 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.
+ */
+
+/*
+ * Results of running the JstatGcTool ("jstat -gccause <pid>")
+ *
+ * Output example:
+ * S0     S1     E      O      M     CCS    YGC     YGCT    FGC    FGCT     GCT    LGCC                 GCC
+ * 0.00   6.25  46.19   0.34  57.98  54.63  15305 1270.551     0    0.000 1270.551 Allocation Failure   No GC
+
+ * Output description:
+ * S0         Survivor space 0 utilization as a percentage of the space's current capacity.
+ * S1         Survivor space 1 utilization as a percentage of the space's current capacity.
+ * E           Eden space utilization as a percentage of the space's current capacity.
+ * O           Old space utilization as a percentage of the space's current capacity.
+ * M          Metaspace utilization as a percentage of the space's current capacity.
+ * CCS     Compressed Class Space
+ * YGC     Number of young generation GC events.
+ * YGCT    Young generation garbage collection time.
+ * FGC      Number of full GC events.
+ * FGCT    Full garbage collection time.
+ * GCT      Total garbage collection time.
+ * LGCC    Cause of last Garbage Collection.
+ * GCC      Cause of current Garbage Collection.
+ */
+package utils;
+
+import common.ToolResults;
+
+public class JstatGcCauseResults extends JstatResults {
+
+    public JstatGcCauseResults(ToolResults rawResults) {
+        super(rawResults);
+    }
+
+    /**
+     * Checks the overall consistency of the results reported by the tool
+     */
+    public void assertConsistency() {
+
+        assertThat(getExitCode() == 0, "Unexpected exit code: " + getExitCode());
+
+        int YGC = getIntValue("YGC");
+        float YGCT = getFloatValue("YGCT");
+        assertThat(YGCT >= 0, "Incorrect time value for YGCT");
+        if (YGC > 0) {
+            assertThat(YGCT > 0, "Number of young generation GC Events is " + YGC + ", but YGCT is 0");
+        }
+
+        float GCT = getFloatValue("GCT");
+        assertThat(GCT >= 0, "Incorrect time value for GCT");
+        assertThat(GCT >= YGCT, "GCT < YGCT (total garbage collection time < young generation garbage collection time)");
+
+        int FGC = getIntValue("FGC");
+        float FGCT = getFloatValue("FGCT");
+        assertThat(FGCT >= 0, "Incorrect time value for FGCT");
+        if (FGC > 0) {
+            assertThat(FGCT > 0, "Number of full GC events is " + FGC + ", but FGCT is 0");
+        }
+
+        assertThat(GCT >= FGCT, "GCT < YGCT (total garbage collection time < full generation garbage collection time)");
+
+        assertThat(checkFloatIsSum(GCT, YGCT, FGCT), "GCT != (YGCT + FGCT) " + "(GCT = " + GCT + ", YGCT = " + YGCT
+                + ", FGCT = " + FGCT + ", (YCGT + FGCT) = " + (YGCT + FGCT) + ")");
+    }
+
+    private static final float FLOAT_COMPARISON_TOLERANCE = 0.0011f;
+
+    private static boolean checkFloatIsSum(float sum, float... floats) {
+        for (float f : floats) {
+            sum -= f;
+        }
+
+        return Math.abs(sum) <= FLOAT_COMPARISON_TOLERANCE;
+    }
+
+    private void assertThat(boolean b, String message) {
+        if (!b) {
+            throw new RuntimeException(message);
+        }
+    }
+
+}