本文整理匯總了Java中sun.misc.Unsafe.getUnsafe方法的典型用法代碼示例。如果您正苦於以下問題:Java Unsafe.getUnsafe方法的具體用法?Java Unsafe.getUnsafe怎麽用?Java Unsafe.getUnsafe使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類sun.misc.Unsafe
的用法示例。
在下文中一共展示了Unsafe.getUnsafe方法的6個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: initUnsafe
import sun.misc.Unsafe; //導入方法依賴的package包/類
private static Unsafe initUnsafe() {
try {
return Unsafe.getUnsafe();
} catch (SecurityException tryReflectionInstead) {
try {
return AccessController.doPrivileged(
(PrivilegedExceptionAction<Unsafe>) () -> {
Class<Unsafe> k = Unsafe.class;
for (Field f : k.getDeclaredFields()) {
f.setAccessible(true);
Object x = f.get(null);
if (k.isInstance(x)) {
return k.cast(x);
}
}
throw new NoSuchFieldError("the Unsafe");
});
} catch (PrivilegedActionException e) {
throw new RuntimeException("Could not initialize intrinsics", e.getCause());
}
}
}
示例2: load
import sun.misc.Unsafe; //導入方法依賴的package包/類
/**
* 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3: initUnsafe
import sun.misc.Unsafe; //導入方法依賴的package包/類
private static Unsafe initUnsafe() {
try {
return Unsafe.getUnsafe();
} catch (SecurityException se) {
try {
Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe");
theUnsafe.setAccessible(true);
return (Unsafe) theUnsafe.get(Unsafe.class);
} catch (Exception e) {
throw new RuntimeException("exception while trying to get Unsafe", e);
}
}
}
示例4: initUnsafe
import sun.misc.Unsafe; //導入方法依賴的package包/類
private static Unsafe initUnsafe() {
try {
// Fast path when we are trusted.
return Unsafe.getUnsafe();
} catch (SecurityException se) {
// Slow path when we are not trusted.
try {
Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe");
theUnsafe.setAccessible(true);
return (Unsafe) theUnsafe.get(Unsafe.class);
} catch (Exception e) {
throw new RuntimeException("exception while trying to get Unsafe", e);
}
}
}
示例5: RenderBuffer
import sun.misc.Unsafe; //導入方法依賴的package包/類
protected RenderBuffer(int numBytes) {
unsafe = Unsafe.getUnsafe();
curAddress = baseAddress = unsafe.allocateMemory(numBytes);
endAddress = baseAddress + numBytes;
capacity = numBytes;
}
示例6: run
import sun.misc.Unsafe; //導入方法依賴的package包/類
public void run() {
Unsafe unsafe = Unsafe.getUnsafe();
}