bandrzejczak

public long getPrice() {
  return unsafe.getInt(objectOffset + priceOffset);
}

public void setPrice(final int price) {
  unsafe.putInt(objectOffset + priceOffset, price);
}

bandrzejczak

address = unsafe.allocateMemory(TRADES_PER_DAY * UnsafeTrade.getObjectSize());

bandrzejczak

Constructor<Unsafe> constructor = Unsafe.class.getDeclaredConstructor();
constructor.setAccessible(true);
Unsafe unsafe = constructor.newInstance();

bandrzejczak

Field field = Unsafe.class.getDeclaredField("theUnsafe");
field.setAccessible(true);
Unsafe unsafe = (Unsafe) field.get(null);

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@CallerSensitive
public static Unsafe getUnsafe() {
    Class var0 = Reflection.getCallerClass();
    if(!VM.isSystemDomainLoader(var0.getClassLoader())) {
        throw new SecurityException("Unsafe");
    } else {
        return theUnsafe;
    }
}

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private static class UnsafeTrade {
    private static long offset = 0;

    private static final long ticketOffset = offset += 0;
    private static final long amountOffset = offset += 4;
    private static final long priceOffset = offset += 4;
    private static final long buyOffset = offset += 4;

    private static final long objectSize = offset += 1;

bandrzejczak

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0xb71a0bde, pid=9350, tid=3066157936
#
# JRE version: Java(TM) SE Runtime Environment (8.0_25-b17) (build 1.8.0_25-b17)
# Java VM: Java HotSpot(TM) Client VM (25.25-b02 mixed mode linux-x86 )
# Problematic frame:
# V  [libjvm.so+0x55dbde]  Unsafe_SetNativeInt+0x4e
#

bandrzejczak

val test = if (1==1) "a" else "b"

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String test = 1 == 1 ? "a" : "b";

bandrzejczak

String test;
if(1 == 1)
  test = "a";
else
  test = "b";