本文整理汇总了Java中sun.misc.Unsafe.getByte方法的典型用法代码示例。如果您正苦于以下问题：Java Unsafe.getByte方法的具体用法？Java Unsafe.getByte怎么用？Java Unsafe.getByte使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类sun.misc.Unsafe的用法示例。
在下文中一共展示了Unsafe.getByte方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: load
import sun.misc.Unsafe; //导入方法依赖的package包/类
/**
* Loads this buffer's content into physical memory.
*
* <p> This method makes a best effort to ensure that, when it returns,
* this buffer's content is resident in physical memory. Invoking this
* method may cause some number of page faults and I/O operations to
* occur. </p>
*
* @return This buffer
*/
public final MappedByteBuffer load() {
checkMapped();
if ((address == 0) || (capacity() == 0))
return this;
long offset = mappingOffset();
long length = mappingLength(offset);
load0(mappingAddress(offset), length);
// Read a byte from each page to bring it into memory. A checksum
// is computed as we go along to prevent the compiler from otherwise
// considering the loop as dead code.
Unsafe unsafe = Unsafe.getUnsafe();
int ps = Bits.pageSize();
int count = Bits.pageCount(length);
long a = mappingAddress(offset);
byte x = 0;
for (int i=0; i<count; i++) {
x ^= unsafe.getByte(a);
a += ps;
}
if (unused != 0)
unused = x;
return this;
}
示例2: check
import sun.misc.Unsafe; //导入方法依赖的package包/类
private static void check(Unsafe unsafe, long addr, int ofs, int len, int value) {
for (int i = 0; i < len; i++) {
int r = unsafe.getByte(null, addr + ofs + i) & 0xff;
if (r != value) {
throw new RuntimeException("mismatch");
}
}
}
示例3: unsafePutByte
import sun.misc.Unsafe; //导入方法依赖的package包/类
@SuppressWarnings("all")
public static int unsafePutByte(Unsafe unsafe, Object obj, long offset, byte value) {
int res = 1;
unsafe.putByte(obj, offset, (byte) (value + 1));
res += unsafe.getByte(obj, offset);
unsafe.putByteVolatile(obj, offset, (byte) (value + 2));
res += unsafe.getByte(obj, offset);
return res;
}
示例4: unsafeDirectMemoryRead
import sun.misc.Unsafe; //导入方法依赖的package包/类
@SuppressWarnings("all")
public static double unsafeDirectMemoryRead(Unsafe unsafe, long address) {
// Unsafe.getBoolean(long) and Unsafe.getObject(long) do not exist
// @formatter:off
return unsafe.getByte(address) +
unsafe.getShort(address + 8) +
unsafe.getChar(address + 16) +
unsafe.getInt(address + 24) +
unsafe.getLong(address + 32) +
unsafe.getFloat(address + 40) +
unsafe.getDouble(address + 48);
// @formatter:on
}
示例5: unsafeGetByte
import sun.misc.Unsafe; //导入方法依赖的package包/类
@SuppressWarnings("all")
public static int unsafeGetByte(Unsafe unsafe, Object obj, long offset) {
return unsafe.getByte(obj, offset) + unsafe.getByteVolatile(obj, offset);
}