本文整理汇总了Java中com.sun.squawk.Unsafe类的典型用法代码示例。如果您正苦于以下问题：Java Unsafe类的具体用法？Java Unsafe怎么用？Java Unsafe使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
Unsafe类属于com.sun.squawk包，在下文中一共展示了Unsafe类的3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: NativeUnsafeGetString
import com.sun.squawk.Unsafe; //导入依赖的package包/类
/**
* Create a Java string from a C string pointer
* @param cstr
* @return a java string
*/
public static String NativeUnsafeGetString(Address cstr) {
int len = 0;
while (Unsafe.getByte(cstr, len) != 0) {
len++;
}
byte[] data = new byte[len];
Unsafe.getBytes(cstr, 0, data, 0, len);
return new String(data);
}
示例2: getSuiteVerifiedFlag
import com.sun.squawk.Unsafe; //导入依赖的package包/类
public static boolean getSuiteVerifiedFlag(int suiteAddress) throws IllegalArgumentException {
/*if[FLASH_MEMORY]*/
int suiteVerifiedFlagAddress=getSuiteVerifiedFlagAddress(suiteAddress);
int suiteVerifiedFlag =
(Unsafe.getByte(Address.zero().add(suiteVerifiedFlagAddress), 0)) & (0xff);
return (0x01!=(suiteVerifiedFlag & (0x01))); //LSB bit is suite verified flag.
/*else[FLASH_MEMORY]*/
// return false;
/*end[FLASH_MEMORY]*/
}
示例3: setSuiteVerifiedFlag
import com.sun.squawk.Unsafe; //导入依赖的package包/类
private static void setSuiteVerifiedFlag(int suiteAddress) throws IllegalArgumentException {
int verifiedFlagAddress = getSuiteVerifiedFlagAddress(suiteAddress);
// if (SignatureVerifier.DEBUG)
// System.out
// .println("Setting suiteVerifiedFlag.\n\tCurrent value"
// + suiteVerifiedFlag + "\n\tShould be"
// + suiteVerifiedFlag + "\n\tSet to "
// + SUITE_VERIFIED + "\n\tsuiteaddress:"
// + suiteAddress + "\n\tverifiedFlagAddress:"
// + (verifiedFlagAddress));
// Set the suiteVerifiedFlag to verified.
byte[] tb = new byte[2];
// Ensure to flash at an even address.
// Not doing so just hangs the SPOT.
if (verifiedFlagAddress % 2 == 0) {
tb[0] = (byte) SUITE_VERIFIED;
tb[1] = (byte) (Unsafe.getByte(Address.zero().add(verifiedFlagAddress + 1), 0) & (0xff));
if (SignatureVerifier.DEBUG) {
System.out.println("Address even. writing: "
+ HexEncoding.hexEncode(tb) + " to "
+ verifiedFlagAddress);
}
VM.execSyncIO(ChannelConstants.FLASH_WRITE, verifiedFlagAddress, 2, 0, 0, 0, 0, tb, null);
} else {
tb[0] = (byte) (Unsafe.getByte(Address.zero().add(verifiedFlagAddress - 1), 0) & (0xff));
tb[1] = (byte) SUITE_VERIFIED;
if (SignatureVerifier.DEBUG) {
System.out.println("Address uneven. writing: "
+ HexEncoding.hexEncode(tb) + " to "
+ (verifiedFlagAddress - 1));
}
VM.execSyncIO(ChannelConstants.FLASH_WRITE, verifiedFlagAddress - 1, 2, 0, 0, 0, 0, tb, null);
}
if (!getSuiteVerifiedFlag(suiteAddress)) {
System.out.println("Warning: Setting suite verified flag failed.");
}
}