bool G1StringDedupTable::equals(typeArrayOop value1, typeArrayOop value2) {
return (value1 == value2 ||
(value1->length() == value2->length() &&
(!memcmp(value1->base(T_BYTE),
value2->base(T_BYTE),
value1->length() * sizeof(jbyte)))));
}
unsigned int G1StringDedupTable::hash_code(typeArrayOop value) {
unsigned int hash;
int length = value->length();
const jchar* data = (jchar*)value->base(T_CHAR);
if (use_java_hash()) {
hash = java_lang_String::hash_code(data, length);
} else {
hash = AltHashing::murmur3_32(_table->_hash_seed, data, length);
}
return hash;
}
// Create a new array, copying the src array but adding a hole at
// the specified location
static typeArrayOop insert_hole_at(
size_t where, int hole_sz, typeArrayOop src) {
Thread* THREAD = Thread::current();
Handle src_hnd(THREAD, src);
typeArrayOop dst =
oopFactory::new_permanent_byteArray(src->length() + hole_sz, CHECK_NULL);
src = (typeArrayOop)src_hnd();
address src_addr = (address)src->byte_at_addr(0);
address dst_addr = (address)dst->byte_at_addr(0);
memcpy(dst_addr, src_addr, where);
memcpy(dst_addr + where + hole_sz,
src_addr + where, src->length() - where);
return dst;
}
unsigned int G1StringDedupTable::hash_code(typeArrayOop value, bool latin1) {
unsigned int hash;
int length = value->length();
if (latin1) {
const jbyte* data = (jbyte*)value->base(T_BYTE);
if (use_java_hash()) {
hash = java_lang_String::hash_code(data, length);
} else {
hash = AltHashing::murmur3_32(_table->_hash_seed, data, length);
}
} else {
length /= sizeof(jchar) / sizeof(jbyte); // Convert number of bytes to number of chars
const jchar* data = (jchar*)value->base(T_CHAR);
if (use_java_hash()) {
hash = java_lang_String::hash_code(data, length);
} else {
hash = AltHashing::murmur3_32(_table->_hash_seed, data, length);
}
}
return hash;
}
static void print_long_array(typeArrayOop ta, int print_len, outputStream* st) {
for (int index = 0; index < print_len; index++) {
jlong v = ta->long_at(index);
st->print_cr(" - %3d: 0x%x 0x%x", index, high(v), low(v));
}
}
static void print_int_array(typeArrayOop ta, int print_len, outputStream* st) {
for (int index = 0; index < print_len; index++) {
jint v = ta->int_at(index);
st->print_cr(" - %3d: 0x%x %d", index, v, v);
}
}
static void print_byte_array(typeArrayOop ta, int print_len, outputStream* st) {
for (int index = 0; index < print_len; index++) {
jbyte c = ta->byte_at(index);
st->print_cr(" - %3d: %x %c", index, c, isprint(c) ? c : ' ');
}
}
static void print_double_array(typeArrayOop ta, int print_len, outputStream* st) {
for (int index = 0; index < print_len; index++) {
st->print_cr(" - %3d: %g", index, ta->double_at(index));
}
}
static void print_boolean_array(typeArrayOop ta, int print_len, outputStream* st) {
for (int index = 0; index < print_len; index++) {
st->print_cr(" - %3d: %s", index, (ta->bool_at(index) == 0) ? "false" : "true");
}
}
