static int newGlobalRef(Object referent) {
if (VM.VerifyAssertions)
VM._assert(MemoryManager.validRef(ObjectReference.fromObject(referent)));
if (free >= JNIGlobalRefs.length()) {
AddressArray newGlobalRefs = AddressArray.create(JNIGlobalRefs.length() * 2);
copyAndReplaceGlobalRefs(newGlobalRefs);
}
JNIGlobalRefs.set(free, Magic.objectAsAddress(referent));
return -free++;
}
@Uninterruptible
private static void copyAndReplaceGlobalRefs(AddressArray newGlobalRefs) {
for (int i = 0; i < JNIGlobalRefs.length(); i++) {
newGlobalRefs.set(i, JNIGlobalRefs.get(i));
}
JNIGlobalRefs = newGlobalRefs;
}