gc/arguments/TestMaxHeapSizeTools.java

51   public static void checkMinInitialMaxHeapFlags(String gcflag) throws Exception {
52     checkInvalidMinInitialHeapCombinations(gcflag);
53     checkValidMinInitialHeapCombinations(gcflag);
54     checkInvalidInitialMaxHeapCombinations(gcflag);
55     checkValidInitialMaxHeapCombinations(gcflag);
58   public static void checkMinInitialErgonomics(String gcflag) throws Exception {
62     getNewOldSize(gcflag, values);
71     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize }, values, -1, -1);
72     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-XX:InitialHeapSize=" + smallValue }, values, -1, smallValue);
73     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-XX:InitialHeapSize=" + largeValue }, values, -1, largeValue);
74     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-XX:InitialHeapSize=0" }, values, -1, -1);
77     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0" }, values, -1, -1);
78     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0", "-XX:InitialHeapSize=" + smallValue }, values, -1, smallValue);
79     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0", "-XX:InitialHeapSize=" + largeValue }, values, -1, largeValue);
80     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0", "-XX:InitialHeapSize=0" }, values, -1, -1);
83     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue }, values, -1, -1);
84     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue, "-XX:InitialHeapSize=" + smallValue }, values, smallValue, smallValue);
85     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue, "-XX:InitialHeapSize=" + largeValue }, values, smallValue, largeValue);
86     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue, "-XX:InitialHeapSize=0" }, values, smallValue, -1);
89     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + largeValue }, values, largeValue, largeValue);
90     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + largeValue, "-XX:InitialHeapSize=0" }, values, largeValue, -1);
98   private static void getNewOldSize(String gcflag, long[] values) throws Exception {
99     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(gcflag,
109   public static void checkGenMaxHeapErgo(String gcflag) throws Exception {
110     TestMaxHeapSizeTools.checkGenMaxHeapSize(gcflag, 4);
111     TestMaxHeapSizeTools.checkGenMaxHeapSize(gcflag, 5);
114   private static void checkInvalidMinInitialHeapCombinations(String gcflag) throws Exception {
115     expectError(new String[] { gcflag, "-XX:InitialHeapSize=1023K", "-version" });
116     expectError(new String[] { gcflag, "-Xms64M", "-XX:InitialHeapSize=32M", "-version" });
119   private static void checkValidMinInitialHeapCombinations(String gcflag) throws Exception {
120     expectValid(new String[] { gcflag, "-XX:InitialHeapSize=1024K", "-version" });
121     expectValid(new String[] { gcflag, "-XX:InitialHeapSize=8M", "-Xms4M", "-version" });
122     expectValid(new String[] { gcflag, "-Xms4M", "-XX:InitialHeapSize=8M", "-version" });
123     expectValid(new String[] { gcflag, "-XX:InitialHeapSize=8M", "-Xms8M", "-version" });
125     expectValid(new String[] { gcflag, "-XX:InitialHeapSize=4M", "-Xms8M", "-version" });
128   private static void checkInvalidInitialMaxHeapCombinations(String gcflag) throws Exception {
129     expectError(new String[] { gcflag, "-XX:MaxHeapSize=2047K", "-version" });
130     expectError(new String[] { gcflag, "-XX:MaxHeapSize=4M", "-XX:InitialHeapSize=8M", "-version" });
131     expectError(new String[] { gcflag, "-XX:InitialHeapSize=8M", "-XX:MaxHeapSize=4M", "-version" });
134   private static void checkValidInitialMaxHeapCombinations(String gcflag) throws Exception {
135     expectValid(new String[] { gcflag, "-XX:InitialHeapSize=4M", "-XX:MaxHeapSize=8M", "-version" });
136     expectValid(new String[] { gcflag, "-XX:MaxHeapSize=8M", "-XX:InitialHeapSize=4M", "-version" });
137     expectValid(new String[] { gcflag, "-XX:MaxHeapSize=4M", "-XX:InitialHeapSize=4M", "-version" });
139     expectValid(new String[] { gcflag, "-XX:MaxHeapSize=4M", "-XX:InitialHeapSize=0M", "-version" });
244    * @param gcflag The garbage collector to test as command line flag. E.g. -XX:+UseG1GC
247   public static void checkGenMaxHeapSize(String gcflag, long maxHeapsize) throws Exception {
251     getMinInitialMaxHeap(new String[] { gcflag, "-XX:MaxHeapSize=" + maxHeapsize + "M" }, v);