--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/oops/typeArrayOop.hpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,143 @@
+/*
+ * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// A typeArrayOop is an array containing basic types (non oop elements).
+// It is used for arrays of {characters, singles, doubles, bytes, shorts, integers, longs}
+#include <limits.h>
+
+class typeArrayOopDesc : public arrayOopDesc {
+ protected:
+ jchar* char_base() const { return (jchar*) base(T_CHAR); }
+ jboolean* bool_base() const { return (jboolean*)base(T_BOOLEAN); }
+ jbyte* byte_base() const { return (jbyte*) base(T_BYTE); }
+ jint* int_base() const { return (jint*) base(T_INT); }
+ jlong* long_base() const { return (jlong*) base(T_LONG); }
+ jshort* short_base() const { return (jshort*) base(T_SHORT); }
+ jfloat* float_base() const { return (jfloat*) base(T_FLOAT); }
+ jdouble* double_base() const { return (jdouble*) base(T_DOUBLE); }
+
+ friend class typeArrayKlass;
+
+ public:
+ jbyte* byte_at_addr(int which) const {
+ assert(is_within_bounds(which), "index out of bounds");
+ return &byte_base()[which];
+ }
+
+ jboolean* bool_at_addr(int which) const {
+ assert(is_within_bounds(which), "index out of bounds");
+ return &bool_base()[which];
+ }
+
+ jchar* char_at_addr(int which) const {
+ assert(is_within_bounds(which), "index out of bounds");
+ return &char_base()[which];
+ }
+
+ jint* int_at_addr(int which) const {
+ assert(is_within_bounds(which), "index out of bounds");
+ return &int_base()[which];
+ }
+
+ jshort* short_at_addr(int which) const {
+ assert(is_within_bounds(which), "index out of bounds");
+ return &short_base()[which];
+ }
+
+ jushort* ushort_at_addr(int which) const { // for field descriptor arrays
+ assert(is_within_bounds(which), "index out of bounds");
+ return (jushort*) &short_base()[which];
+ }
+
+ jlong* long_at_addr(int which) const {
+ assert(is_within_bounds(which), "index out of bounds");
+ return &long_base()[which];
+ }
+
+ jfloat* float_at_addr(int which) const {
+ assert(is_within_bounds(which), "index out of bounds");
+ return &float_base()[which];
+ }
+
+ jdouble* double_at_addr(int which) const {
+ assert(is_within_bounds(which), "index out of bounds");
+ return &double_base()[which];
+ }
+
+ jbyte byte_at(int which) const { return *byte_at_addr(which); }
+ void byte_at_put(int which, jbyte contents) { *byte_at_addr(which) = contents; }
+
+ jboolean bool_at(int which) const { return *bool_at_addr(which); }
+ void bool_at_put(int which, jboolean contents) { *bool_at_addr(which) = contents; }
+
+ jchar char_at(int which) const { return *char_at_addr(which); }
+ void char_at_put(int which, jchar contents) { *char_at_addr(which) = contents; }
+
+ jint int_at(int which) const { return *int_at_addr(which); }
+ void int_at_put(int which, jint contents) { *int_at_addr(which) = contents; }
+
+ jshort short_at(int which) const { return *short_at_addr(which); }
+ void short_at_put(int which, jshort contents) { *short_at_addr(which) = contents; }
+
+ jushort ushort_at(int which) const { return *ushort_at_addr(which); }
+ void ushort_at_put(int which, jushort contents) { *ushort_at_addr(which) = contents; }
+
+ jlong long_at(int which) const { return *long_at_addr(which); }
+ void long_at_put(int which, jlong contents) { *long_at_addr(which) = contents; }
+
+ jfloat float_at(int which) const { return *float_at_addr(which); }
+ void float_at_put(int which, jfloat contents) { *float_at_addr(which) = contents; }
+
+ jdouble double_at(int which) const { return *double_at_addr(which); }
+ void double_at_put(int which, jdouble contents) { *double_at_addr(which) = contents; }
+
+ jbyte byte_at_acquire(int which) const { return OrderAccess::load_acquire(byte_at_addr(which)); }
+ void release_byte_at_put(int which, jbyte contents) { OrderAccess::release_store(byte_at_addr(which), contents); }
+
+ // Sizing
+
+ // Returns the number of words necessary to hold an array of "len"
+ // elements each of the given "byte_size".
+ private:
+ static int object_size(int lh, int length) {
+ int instance_header_size = Klass::layout_helper_header_size(lh);
+ int element_shift = Klass::layout_helper_log2_element_size(lh);
+ DEBUG_ONLY(BasicType etype = Klass::layout_helper_element_type(lh));
+ assert(length <= arrayOopDesc::max_array_length(etype), "no overflow");
+
+ julong size_in_bytes = length;
+ size_in_bytes <<= element_shift;
+ size_in_bytes += instance_header_size;
+ julong size_in_words = ((size_in_bytes + (HeapWordSize-1)) >> LogHeapWordSize);
+ assert(size_in_words <= (julong)max_jint, "no overflow");
+
+ return align_object_size((intptr_t)size_in_words);
+ }
+
+ public:
+ int object_size() {
+ typeArrayKlass* tk = typeArrayKlass::cast(klass());
+ return object_size(tk->layout_helper(), length());
+ }
+};