@Test
public void testByteArrayAllocation() {
GemFireCacheImpl gfc = createCache();
try {
MemoryAllocator ma = gfc.getOffHeapStore();
assertNotNull(ma);
final long offHeapSize = ma.getFreeMemory();
assertEquals(0, ma.getUsedMemory());
byte[] data = new byte[] {1, 2, 3, 4, 5, 6, 7, 8};
MemoryChunk mc1 = (MemoryChunk) ma.allocateAndInitialize(data, false, false, null);
assertEquals(data.length + perObjectOverhead(), ma.getUsedMemory());
assertEquals(offHeapSize - (data.length + perObjectOverhead()), ma.getFreeMemory());
byte[] data2 = new byte[data.length];
mc1.readBytes(0, data2);
assertTrue(Arrays.equals(data, data2));
mc1.release();
assertEquals(offHeapSize, ma.getFreeMemory());
assertEquals(0, ma.getUsedMemory());
// try some small byte[] that don't need to be stored off heap.
data = new byte[] {1, 2, 3, 4, 5, 6, 7};
StoredObject so1 = ma.allocateAndInitialize(data, false, false, null);
assertEquals(0, ma.getUsedMemory());
assertEquals(offHeapSize, ma.getFreeMemory());
data2 = new byte[data.length];
data2 = (byte[]) so1.getDeserializedForReading();
assertTrue(Arrays.equals(data, data2));
} finally {
closeCache(gfc, false);
}
}
