47
48 class TestMaxHeapSizeTools {
49
50 public static void checkMinInitialMaxHeapFlags(String gcflag) throws Exception {
51 checkInvalidMinInitialHeapCombinations(gcflag);
52 checkValidMinInitialHeapCombinations(gcflag);
53 checkInvalidInitialMaxHeapCombinations(gcflag);
54 checkValidInitialMaxHeapCombinations(gcflag);
55 }
56
57 public static void checkMinInitialErgonomics(String gcflag) throws Exception {
58 // heap sizing ergonomics use the value NewSize + OldSize as default values
59 // for ergonomics calculation. Retrieve these values.
60 long[] values = new long[2];
61 getNewOldSize(gcflag, values);
62
63 // we check cases with values smaller and larger than this default value.
64 long newPlusOldSize = values[0] + values[1];
65 long smallValue = newPlusOldSize / 2;
66 long largeValue = newPlusOldSize * 2;
67
68 // -Xms is not set
69 checkErgonomics(new String[] { gcflag, "-Xmx16M" }, values, -1, -1);
70 checkErgonomics(new String[] { gcflag, "-Xmx16M", "-XX:InitialHeapSize=" + smallValue }, values, smallValue, smallValue);
71 checkErgonomics(new String[] { gcflag, "-Xmx16M", "-XX:InitialHeapSize=" + largeValue }, values, -1, largeValue);
72 checkErgonomics(new String[] { gcflag, "-Xmx16M", "-XX:InitialHeapSize=0" }, values, -1, -1);
73
74 // -Xms is set to zero
75 checkErgonomics(new String[] { gcflag, "-Xmx16M", "-Xms0" }, values, -1, -1);
76 checkErgonomics(new String[] { gcflag, "-Xmx16M", "-Xms0", "-XX:InitialHeapSize=" + smallValue }, values, smallValue, smallValue);
77 checkErgonomics(new String[] { gcflag, "-Xmx16M", "-Xms0", "-XX:InitialHeapSize=" + largeValue }, values, -1, largeValue);
78 checkErgonomics(new String[] { gcflag, "-Xmx16M", "-Xms0", "-XX:InitialHeapSize=0" }, values, -1, -1);
79
80 // -Xms is set to small value
81 checkErgonomics(new String[] { gcflag, "-Xmx16M", "-Xms" + smallValue }, values, -1, -1);
82 checkErgonomics(new String[] { gcflag, "-Xmx16M", "-Xms" + smallValue, "-XX:InitialHeapSize=" + smallValue }, values, smallValue, smallValue);
83 checkErgonomics(new String[] { gcflag, "-Xmx16M", "-Xms" + smallValue, "-XX:InitialHeapSize=" + largeValue }, values, smallValue, largeValue);
84 checkErgonomics(new String[] { gcflag, "-Xmx16M", "-Xms" + smallValue, "-XX:InitialHeapSize=0" }, values, smallValue, -1);
85
86 // -Xms is set to large value
87 checkErgonomics(new String[] { gcflag, "-Xmx16M", "-Xms" + largeValue }, values, largeValue, largeValue);
88 // the next case has already been checked elsewhere and gives an error
89 // checkErgonomics(new String[] { gcflag, "-Xmx16M", "-Xms" + largeValue, "-XX:InitialHeapSize=" + smallValue }, values, smallValue, smallValue);
90 // the next case has already been checked elsewhere too
91 // checkErgonomics(new String[] { gcflag, "-Xmx16M", "-Xms" + largeValue, "-XX:InitialHeapSize=" + largeValue }, values, values[0], largeValue);
92 checkErgonomics(new String[] { gcflag, "-Xmx16M", "-Xms" + largeValue, "-XX:InitialHeapSize=0" }, values, largeValue, -1);
93 }
94
95 private static long align_up(long value, long alignment) {
96 long alignmentMinusOne = alignment - 1;
97 return (value + alignmentMinusOne) & ~alignmentMinusOne;
98 }
99
100 private static void getNewOldSize(String gcflag, long[] values) throws Exception {
101 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(gcflag,
102 "-XX:+PrintFlagsFinal", "-version");
103 OutputAnalyzer output = new OutputAnalyzer(pb.start());
104 output.shouldHaveExitValue(0);
105
106 String stdout = output.getStdout();
107 values[0] = getFlagValue(" NewSize", stdout);
108 values[1] = getFlagValue(" OldSize", stdout);
109 }
110
111 public static void checkGenMaxHeapErgo(String gcflag) throws Exception {
112 TestMaxHeapSizeTools.checkGenMaxHeapSize(gcflag, 3);
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47
48 class TestMaxHeapSizeTools {
49
50 public static void checkMinInitialMaxHeapFlags(String gcflag) throws Exception {
51 checkInvalidMinInitialHeapCombinations(gcflag);
52 checkValidMinInitialHeapCombinations(gcflag);
53 checkInvalidInitialMaxHeapCombinations(gcflag);
54 checkValidInitialMaxHeapCombinations(gcflag);
55 }
56
57 public static void checkMinInitialErgonomics(String gcflag) throws Exception {
58 // heap sizing ergonomics use the value NewSize + OldSize as default values
59 // for ergonomics calculation. Retrieve these values.
60 long[] values = new long[2];
61 getNewOldSize(gcflag, values);
62
63 // we check cases with values smaller and larger than this default value.
64 long newPlusOldSize = values[0] + values[1];
65 long smallValue = newPlusOldSize / 2;
66 long largeValue = newPlusOldSize * 2;
67 long maxHeapSize = largeValue + (2 * 1024 * 1024);
68
69 // -Xms is not set
70 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize }, values, -1, -1);
71 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-XX:InitialHeapSize=" + smallValue }, values, -1, smallValue);
72 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-XX:InitialHeapSize=" + largeValue }, values, -1, largeValue);
73 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-XX:InitialHeapSize=0" }, values, -1, -1);
74
75 // -Xms is set to zero
76 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0" }, values, -1, -1);
77 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0", "-XX:InitialHeapSize=" + smallValue }, values, -1, smallValue);
78 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0", "-XX:InitialHeapSize=" + largeValue }, values, -1, largeValue);
79 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0", "-XX:InitialHeapSize=0" }, values, -1, -1);
80
81 // -Xms is set to small value
82 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue }, values, -1, -1);
83 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue, "-XX:InitialHeapSize=" + smallValue }, values, smallValue, smallValue);
84 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue, "-XX:InitialHeapSize=" + largeValue }, values, smallValue, largeValue);
85 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue, "-XX:InitialHeapSize=0" }, values, smallValue, -1);
86
87 // -Xms is set to large value
88 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + largeValue }, values, largeValue, largeValue);
89 // the next case has already been checked elsewhere and gives an error
90 // checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + largeValue, "-XX:InitialHeapSize=" + smallValue }, values, smallValue, smallValue);
91 // the next case has already been checked elsewhere too
92 // checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + largeValue, "-XX:InitialHeapSize=" + largeValue }, values, values[0], largeValue);
93 checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + largeValue, "-XX:InitialHeapSize=0" }, values, largeValue, -1);
94 }
95
96 private static long align_up(long value, long alignment) {
97 long alignmentMinusOne = alignment - 1;
98 return (value + alignmentMinusOne) & ~alignmentMinusOne;
99 }
100
101 private static void getNewOldSize(String gcflag, long[] values) throws Exception {
102 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(gcflag,
103 "-XX:+PrintFlagsFinal", "-version");
104 OutputAnalyzer output = new OutputAnalyzer(pb.start());
105 output.shouldHaveExitValue(0);
106
107 String stdout = output.getStdout();
108 values[0] = getFlagValue(" NewSize", stdout);
109 values[1] = getFlagValue(" OldSize", stdout);
110 }
111
112 public static void checkGenMaxHeapErgo(String gcflag) throws Exception {
113 TestMaxHeapSizeTools.checkGenMaxHeapSize(gcflag, 3);
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