Java Code Examples for sun.misc.Unsafe#ADDRESS_SIZE

The following examples show how to use sun.misc.Unsafe#ADDRESS_SIZE . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: TestShrinkAuxiliaryData.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Detects maximum possible size of G1ConcRSLogCacheSize available for
 * current process based on maximum available process memory size
 *
 * @return power of two
 */
private static int getMaxCacheSize() {
    long availableMemory = Runtime.getRuntime().freeMemory()
            - ShrinkAuxiliaryDataTest.getMemoryUsedByTest() - 1l;
    if (availableMemory <= 0) {
        return 0;
    }

    long availablePointersCount = availableMemory / Unsafe.ADDRESS_SIZE;
    return (63 - (int) Long.numberOfLeadingZeros(availablePointersCount));
}
Example 2
Source File: TestShrinkAuxiliaryData.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Detects maximum possible size of G1ConcRSLogCacheSize available for
 * current process based on maximum available process memory size
 *
 * @return power of two
 */
private static int getMaxCacheSize() {
    long availableMemory = Runtime.getRuntime().freeMemory()
            - ShrinkAuxiliaryDataTest.getMemoryUsedByTest() - 1l;
    if (availableMemory <= 0) {
        return 0;
    }

    long availablePointersCount = availableMemory / Unsafe.ADDRESS_SIZE;
    return (63 - (int) Long.numberOfLeadingZeros(availablePointersCount));
}
Example 3
Source File: TestShrinkAuxiliaryData.java    From openjdk-jdk8u with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Detects maximum possible size of G1ConcRSLogCacheSize available for
 * current process based on maximum available process memory size
 *
 * @return power of two
 */
private static int getMaxCacheSize() {
    long availableMemory = Runtime.getRuntime().freeMemory()
            - ShrinkAuxiliaryDataTest.getMemoryUsedByTest() - 1l;
    if (availableMemory <= 0) {
        return 0;
    }

    long availablePointersCount = availableMemory / Unsafe.ADDRESS_SIZE;
    return (63 - (int) Long.numberOfLeadingZeros(availablePointersCount));
}
Example 4
Source File: TestShrinkAuxiliaryData.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Detects maximum possible size of G1ConcRSLogCacheSize available for
 * current process based on maximum available process memory size
 *
 * @return power of two
 */
private static int getMaxCacheSize() {
    long availableMemory = Runtime.getRuntime().freeMemory()
            - ShrinkAuxiliaryDataTest.getMemoryUsedByTest() - 1l;
    if (availableMemory <= 0) {
        return 0;
    }

    long availablePointersCount = availableMemory / Unsafe.ADDRESS_SIZE;
    return (63 - (int) Long.numberOfLeadingZeros(availablePointersCount));
}
Example 5
Source File: TestShrinkAuxiliaryData.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Detects maximum possible size of G1ConcRSLogCacheSize available for
 * current process based on maximum available process memory size
 *
 * @return power of two
 */
private static int getMaxCacheSize() {
    long availableMemory = Runtime.getRuntime().freeMemory()
            - ShrinkAuxiliaryDataTest.getMemoryUsedByTest() - 1l;
    if (availableMemory <= 0) {
        return 0;
    }

    long availablePointersCount = availableMemory / Unsafe.ADDRESS_SIZE;
    return (63 - (int) Long.numberOfLeadingZeros(availablePointersCount));
}