https://bugs.webkit.org/show_bug.cgi?id=76855

https://bugs.webkit.org/show_bug.cgi?id=76855
Implement a JIT-code aware sampling profiler for JSC

Reviewed by Geoff Garen.

Step 2: generalize RedBlackTree. The profiler is going to want tio use
a RedBlackTree, allow this class to work with subclasses of
RedBlackTree::Node, Node should not need to know the names of the m_key
and m_value fields (the subclass can provide a key() accessor), and
RedBlackTree does not need to know anything about ValueType.

* JavaScriptCore.exp:
* wtf/MetaAllocator.cpp:
(WTF::MetaAllocator::findAndRemoveFreeSpace):
(WTF::MetaAllocator::debugFreeSpaceSize):
(WTF::MetaAllocator::addFreeSpace):
* wtf/MetaAllocator.h:
(WTF::MetaAllocator::FreeSpaceNode::FreeSpaceNode):
(WTF::MetaAllocator::FreeSpaceNode::key):
* wtf/MetaAllocatorHandle.h:
(WTF::MetaAllocatorHandle::key):
* wtf/RedBlackTree.h:
(WTF::RedBlackTree::Node::successor):
(WTF::RedBlackTree::Node::predecessor):
(WTF::RedBlackTree::Node::parent):
(WTF::RedBlackTree::Node::setParent):
(WTF::RedBlackTree::Node::left):
(WTF::RedBlackTree::Node::setLeft):
(WTF::RedBlackTree::Node::right):
(WTF::RedBlackTree::Node::setRight):
(WTF::RedBlackTree::insert):
(WTF::RedBlackTree::remove):
(WTF::RedBlackTree::findExact):
(WTF::RedBlackTree::findLeastGreaterThanOrEqual):
(WTF::RedBlackTree::findGreatestLessThanOrEqual):
(WTF::RedBlackTree::first):
(WTF::RedBlackTree::last):
(WTF::RedBlackTree::size):
(WTF::RedBlackTree::treeMinimum):
(WTF::RedBlackTree::treeMaximum):
(WTF::RedBlackTree::treeInsert):
(WTF::RedBlackTree::leftRotate):
(WTF::RedBlackTree::rightRotate):
(WTF::RedBlackTree::removeFixup):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105646 268f45cc-cd09-0410-ab3c-d52691b4dbfc