10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test TestParallelGCThreads
26 * @key gc
27 * @bug 8059527
28 * @summary Tests argument processing for ParallelGCThreads
29 * @library /testlibrary
30 * @build TestParallelGCThreads FlagsValue
31 * @run main/othervm TestParallelGCThreads
32 */
33
34 import com.oracle.java.testlibrary.*;
35
36 public class TestParallelGCThreads {
37
38 public static void main(String args[]) throws Exception {
39
40 // For each parallel collector (G1, Parallel, ParNew/CMS)
41 for (String gc : new String[] {"G1", "Parallel", "ConcMarkSweep"}) {
42
43 // Make sure the VM does not allow ParallelGCThreads set to 0
44 String[] flags = new String[] {"-XX:+Use" + gc + "GC", "-XX:ParallelGCThreads=0", "-XX:+PrintFlagsFinal", "-version"};
45 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(flags);
46 OutputAnalyzer output = new OutputAnalyzer(pb.start());
47 output.shouldHaveExitValue(1);
48
49 // Do some basic testing to ensure the flag updates the count
50 for (long i = 1; i <= 3; i++) {
51 flags = new String[] {"-XX:+Use" + gc + "GC", "-XX:ParallelGCThreads=" + i, "-XX:+PrintFlagsFinal", "-version"};
52 long count = getParallelGCThreadCount(flags);
53 if (count != i) {
54 throw new RuntimeException("Specifying ParallelGCThreads=" + i + " for " + gc + "GC does not set the thread count properly! Count found was " + count);
55 }
56 }
57 }
58 }
59
60 public static long getParallelGCThreadCount(String flags[]) throws Exception {
61 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(flags);
62 OutputAnalyzer output = new OutputAnalyzer(pb.start());
63 output.shouldHaveExitValue(0);
64 String stdout = output.getStdout();
65 return FlagsValue.getFlagLongValue("ParallelGCThreads", stdout);
66 }
67 }
|
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test TestParallelGCThreads
26 * @key gc
27 * @bug 8059527
28 * @summary Tests argument processing for ParallelGCThreads
29 * @library /testlibrary
30 * @run driver TestParallelGCThreads
31 */
32
33 import com.oracle.java.testlibrary.*;
34
35 public class TestParallelGCThreads {
36
37 public static void main(String args[]) throws Exception {
38
39 // For each parallel collector (G1, Parallel, ParNew/CMS)
40 for (String gc : new String[] {"G1", "Parallel", "ConcMarkSweep"}) {
41
42 // Make sure the VM does not allow ParallelGCThreads set to 0
43 String[] flags = new String[] {"-XX:+Use" + gc + "GC", "-XX:ParallelGCThreads=0", "-XX:+PrintFlagsFinal", "-version"};
44 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(flags);
45 OutputAnalyzer output = new OutputAnalyzer(pb.start());
46 output.shouldHaveExitValue(1);
47
48 // Do some basic testing to ensure the flag updates the count
49 for (long i = 1; i <= 3; i++) {
50 flags = new String[] {"-XX:+Use" + gc + "GC", "-XX:ParallelGCThreads=" + i, "-XX:+PrintFlagsFinal", "-version"};
51 long count = getParallelGCThreadCount(flags);
52 Asserts.assertEQ(count, i, "Specifying ParallelGCThreads=" + i + " for " + gc + "GC does not set the thread count properly!");
53 }
54 }
55 }
56
57 public static long getParallelGCThreadCount(String flags[]) throws Exception {
58 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(flags);
59 OutputAnalyzer output = new OutputAnalyzer(pb.start());
60 output.shouldHaveExitValue(0);
61 String stdout = output.getStdout();
62 return FlagsValue.getFlagLongValue("ParallelGCThreads", stdout);
63 }
64 }
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