diff -r fd16c54261b3 -r 489c9b5090e2 hotspot/src/share/vm/utilities/growableArray.hpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/utilities/growableArray.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,331 @@
+/*
+ * Copyright 1997-2005 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 growable array.
+
+/*************************************************************************/
+/*                                                                       */
+/*     WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING   */
+/*                                                                       */
+/* Should you use GrowableArrays to contain handles you must be certain  */
+/* the the GrowableArray does not outlive the HandleMark that contains   */
+/* the handles. Since GrowableArrays are typically resource allocated    */
+/* the following is an example of INCORRECT CODE,                        */
+/*                                                                       */
+/* ResourceMark rm;                                                      */
+/* GrowableArray<Handle>* arr = new GrowableArray<Handle>(size);         */
+/* if (blah) {                                                           */
+/*    while (...) {                                                      */
+/*      HandleMark hm;                                                   */
+/*      ...                                                              */
+/*      Handle h(THREAD, some_oop);                                      */
+/*      arr->append(h);                                                  */
+/*    }                                                                  */
+/* }                                                                     */
+/* if (arr->length() != 0 ) {                                            */
+/*    oop bad_oop = arr->at(0)(); // Handle is BAD HERE.                 */
+/*    ...                                                                */
+/* }                                                                     */
+/*                                                                       */
+/* If the GrowableArrays you are creating is C_Heap allocated then it    */
+/* hould not old handles since the handles could trivially try and       */
+/* outlive their HandleMark. In some situations you might need to do     */
+/* this and it would be legal but be very careful and see if you can do  */
+/* the code in some other manner.                                        */
+/*                                                                       */
+/*************************************************************************/
+
+// To call default constructor the placement operator new() is used.
+// It should be empty (it only returns the passed void* pointer).
+// The definition of placement operator new(size_t, void*) in the <new>.
+
+#include <new>
+
+// Need the correct linkage to call qsort without warnings
+extern "C" {
+  typedef int (*_sort_Fn)(const void *, const void *);
+}
+
+class GenericGrowableArray : public ResourceObj {
+ protected:
+  int    _len;          // current length
+  int    _max;          // maximum length
+  Arena* _arena;        // Indicates where allocation occurs:
+                        //   0 means default ResourceArea
+                        //   1 means on C heap
+                        //   otherwise, allocate in _arena
+#ifdef ASSERT
+  int    _nesting;      // resource area nesting at creation
+  void   set_nesting();
+  void   check_nesting();
+#else
+#define  set_nesting();
+#define  check_nesting();
+#endif
+
+  // Where are we going to allocate memory?
+  bool on_C_heap() { return _arena == (Arena*)1; }
+  bool on_stack () { return _arena == NULL;      }
+  bool on_arena () { return _arena >  (Arena*)1;  }
+
+  // This GA will use the resource stack for storage if c_heap==false,
+  // Else it will use the C heap.  Use clear_and_deallocate to avoid leaks.
+  GenericGrowableArray(int initial_size, int initial_len, bool c_heap) {
+    _len = initial_len;
+    _max = initial_size;
+    assert(_len >= 0 && _len <= _max, "initial_len too big");
+    _arena = (c_heap ? (Arena*)1 : NULL);
+    set_nesting();
+    assert(!c_heap || allocated_on_C_heap(), "growable array must be on C heap if elements are");
+  }
+
+  // This GA will use the given arena for storage.
+  // Consider using new(arena) GrowableArray<T> to allocate the header.
+  GenericGrowableArray(Arena* arena, int initial_size, int initial_len) {
+    _len = initial_len;
+    _max = initial_size;
+    assert(_len >= 0 && _len <= _max, "initial_len too big");
+    _arena = arena;
+    assert(on_arena(), "arena has taken on reserved value 0 or 1");
+  }
+
+  void* raw_allocate(int elementSize);
+};
+
+template<class E> class GrowableArray : public GenericGrowableArray {
+ private:
+  E*     _data;         // data array
+
+  void grow(int j);
+  void raw_at_put_grow(int i, const E& p, const E& fill);
+  void  clear_and_deallocate();
+ public:
+  GrowableArray(int initial_size, bool C_heap = false) : GenericGrowableArray(initial_size, 0, C_heap) {
+    _data = (E*)raw_allocate(sizeof(E));
+    for (int i = 0; i < _max; i++) ::new ((void*)&_data[i]) E();
+  }
+
+  GrowableArray(int initial_size, int initial_len, const E& filler, bool C_heap = false) : GenericGrowableArray(initial_size, initial_len, C_heap) {
+    _data = (E*)raw_allocate(sizeof(E));
+    int i = 0;
+    for (; i < _len; i++) ::new ((void*)&_data[i]) E(filler);
+    for (; i < _max; i++) ::new ((void*)&_data[i]) E();
+  }
+
+  GrowableArray(Arena* arena, int initial_size, int initial_len, const E& filler) : GenericGrowableArray(arena, initial_size, initial_len) {
+    _data = (E*)raw_allocate(sizeof(E));
+    int i = 0;
+    for (; i < _len; i++) ::new ((void*)&_data[i]) E(filler);
+    for (; i < _max; i++) ::new ((void*)&_data[i]) E();
+  }
+
+  GrowableArray() : GenericGrowableArray(2, 0, false) {
+    _data = (E*)raw_allocate(sizeof(E));
+    ::new ((void*)&_data[0]) E();
+    ::new ((void*)&_data[1]) E();
+  }
+
+                                // Does nothing for resource and arena objects
+  ~GrowableArray()              { if (on_C_heap()) clear_and_deallocate(); }
+
+  void  clear()                 { _len = 0; }
+  int   length() const          { return _len; }
+  void  trunc_to(int l)         { assert(l <= _len,"cannot increase length"); _len = l; }
+  bool  is_empty() const        { return _len == 0; }
+  bool  is_nonempty() const     { return _len != 0; }
+  bool  is_full() const         { return _len == _max; }
+  DEBUG_ONLY(E* data_addr() const      { return _data; })
+
+  void print();
+
+  void append(const E& elem) {
+    check_nesting();
+    if (_len == _max) grow(_len);
+    _data[_len++] = elem;
+  }
+
+  void append_if_missing(const E& elem) {
+    if (!contains(elem)) append(elem);
+  }
+
+  E at(int i) const {
+    assert(0 <= i && i < _len, "illegal index");
+    return _data[i];
+  }
+
+  E* adr_at(int i) const {
+    assert(0 <= i && i < _len, "illegal index");
+    return &_data[i];
+  }
+
+  E first() const {
+    assert(_len > 0, "empty list");
+    return _data[0];
+  }
+
+  E top() const {
+    assert(_len > 0, "empty list");
+    return _data[_len-1];
+  }
+
+  void push(const E& elem) { append(elem); }
+
+  E pop() {
+    assert(_len > 0, "empty list");
+    return _data[--_len];
+  }
+
+  void at_put(int i, const E& elem) {
+    assert(0 <= i && i < _len, "illegal index");
+    _data[i] = elem;
+  }
+
+  E at_grow(int i, const E& fill = E()) {
+    assert(0 <= i, "negative index");
+    check_nesting();
+    if (i >= _len) {
+      if (i >= _max) grow(i);
+      for (int j = _len; j <= i; j++)
+        _data[j] = fill;
+      _len = i+1;
+    }
+    return _data[i];
+  }
+
+  void at_put_grow(int i, const E& elem, const E& fill = E()) {
+    assert(0 <= i, "negative index");
+    check_nesting();
+    raw_at_put_grow(i, elem, fill);
+  }
+
+  bool contains(const E& elem) const {
+    for (int i = 0; i < _len; i++) {
+      if (_data[i] == elem) return true;
+    }
+    return false;
+  }
+
+  int  find(const E& elem) const {
+    for (int i = 0; i < _len; i++) {
+      if (_data[i] == elem) return i;
+    }
+    return -1;
+  }
+
+  int  find(void* token, bool f(void*, E)) const {
+    for (int i = 0; i < _len; i++) {
+      if (f(token, _data[i])) return i;
+    }
+    return -1;
+  }
+
+  int  find_at_end(void* token, bool f(void*, E)) const {
+    // start at the end of the array
+    for (int i = _len-1; i >= 0; i--) {
+      if (f(token, _data[i])) return i;
+    }
+    return -1;
+  }
+
+  void remove(const E& elem) {
+    for (int i = 0; i < _len; i++) {
+      if (_data[i] == elem) {
+        for (int j = i + 1; j < _len; j++) _data[j-1] = _data[j];
+        _len--;
+        return;
+      }
+    }
+    ShouldNotReachHere();
+  }
+
+  void remove_at(int index) {
+    assert(0 <= index && index < _len, "illegal index");
+    for (int j = index + 1; j < _len; j++) _data[j-1] = _data[j];
+    _len--;
+  }
+
+  void appendAll(const GrowableArray<E>* l) {
+    for (int i = 0; i < l->_len; i++) {
+      raw_at_put_grow(_len, l->_data[i], 0);
+    }
+  }
+
+  void sort(int f(E*,E*)) {
+    qsort(_data, length(), sizeof(E), (_sort_Fn)f);
+  }
+  // sort by fixed-stride sub arrays:
+  void sort(int f(E*,E*), int stride) {
+    qsort(_data, length() / stride, sizeof(E) * stride, (_sort_Fn)f);
+  }
+};
+
+// Global GrowableArray methods (one instance in the library per each 'E' type).
+
+template<class E> void GrowableArray<E>::grow(int j) {
+    // grow the array by doubling its size (amortized growth)
+    int old_max = _max;
+    if (_max == 0) _max = 1; // prevent endless loop
+    while (j >= _max) _max = _max*2;
+    // j < _max
+    E* newData = (E*)raw_allocate(sizeof(E));
+    int i = 0;
+    for (     ; i < _len; i++) ::new ((void*)&newData[i]) E(_data[i]);
+    for (     ; i < _max; i++) ::new ((void*)&newData[i]) E();
+    for (i = 0; i < old_max; i++) _data[i].~E();
+    if (on_C_heap() && _data != NULL) {
+      FreeHeap(_data);
+    }
+    _data = newData;
+}
+
+template<class E> void GrowableArray<E>::raw_at_put_grow(int i, const E& p, const E& fill) {
+    if (i >= _len) {
+      if (i >= _max) grow(i);
+      for (int j = _len; j < i; j++)
+        _data[j] = fill;
+      _len = i+1;
+    }
+    _data[i] = p;
+}
+
+// This function clears and deallocate the data in the growable array that
+// has been allocated on the C heap.  It's not public - called by the
+// destructor.
+template<class E> void GrowableArray<E>::clear_and_deallocate() {
+    assert(on_C_heap(),
+           "clear_and_deallocate should only be called when on C heap");
+    clear();
+    if (_data != NULL) {
+      for (int i = 0; i < _max; i++) _data[i].~E();
+      FreeHeap(_data);
+      _data = NULL;
+    }
+}
+
+template<class E> void GrowableArray<E>::print() {
+    tty->print("Growable Array " INTPTR_FORMAT, this);
+    tty->print(": length %ld (_max %ld) { ", _len, _max);
+    for (int i = 0; i < _len; i++) tty->print(INTPTR_FORMAT " ", *(intptr_t*)&(_data[i]));
+    tty->print("}\n");
+}