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authorRemko Tronçon <git@el-tramo.be>2011-03-14 18:35:17 (GMT)
committerRemko Tronçon <git@el-tramo.be>2011-03-14 18:35:17 (GMT)
commita135c6ff4dcded5661a2321512960b14cf8c15c8 (patch)
treeb0017ecfe702304f592b9d4e8b943784cff26fb2 /3rdParty/Boost/src/boost/unordered/detail
parent02d6188ab335e6c62b8341b84579d9549d215118 (diff)
downloadswift-a135c6ff4dcded5661a2321512960b14cf8c15c8.zip
swift-a135c6ff4dcded5661a2321512960b14cf8c15c8.tar.bz2
Updated Boost to 1.46.1.
This should hopefuily fix a hang on shutdown on Mac OS X. Resolves: #782 Release-Notes: Fixed a potential hang on shutdown on Mac OS X.
Diffstat (limited to '3rdParty/Boost/src/boost/unordered/detail')
-rw-r--r--3rdParty/Boost/src/boost/unordered/detail/buckets.hpp2
-rw-r--r--3rdParty/Boost/src/boost/unordered/detail/fwd.hpp140
-rw-r--r--3rdParty/Boost/src/boost/unordered/detail/util.hpp4
3 files changed, 111 insertions, 35 deletions
diff --git a/3rdParty/Boost/src/boost/unordered/detail/buckets.hpp b/3rdParty/Boost/src/boost/unordered/detail/buckets.hpp
index b1dee5c..913dbcd 100644
--- a/3rdParty/Boost/src/boost/unordered/detail/buckets.hpp
+++ b/3rdParty/Boost/src/boost/unordered/detail/buckets.hpp
@@ -64,7 +64,7 @@ namespace boost { namespace unordered_detail {
inline void hash_buckets<A, G>::delete_node(node_ptr b)
{
node* raw_ptr = static_cast<node*>(&*b);
- boost::unordered_detail::destroy(&raw_ptr->value());
+ boost::unordered_detail::destroy(raw_ptr->value_ptr());
real_node_ptr n(node_alloc().address(*raw_ptr));
node_alloc().destroy(n);
node_alloc().deallocate(n, 1);
diff --git a/3rdParty/Boost/src/boost/unordered/detail/fwd.hpp b/3rdParty/Boost/src/boost/unordered/detail/fwd.hpp
index be4d5e1..471d1d2 100644
--- a/3rdParty/Boost/src/boost/unordered/detail/fwd.hpp
+++ b/3rdParty/Boost/src/boost/unordered/detail/fwd.hpp
@@ -21,14 +21,14 @@
// This header defines most of the classes used to implement the unordered
// containers. It doesn't include the insert methods as they require a lot
-// of preprocessor metaprogramming - they are in insert.hpp
+// of preprocessor metaprogramming - they are in unique.hpp and equivalent.hpp.
// Template parameters:
//
// H = Hash Function
// P = Predicate
// A = Value Allocator
-// G = Grouped/Ungrouped
+// G = Bucket group policy, 'grouped' or 'ungrouped'
// E = Key Extractor
#if !defined(BOOST_NO_RVALUE_REFERENCES) && !defined(BOOST_NO_VARIADIC_TEMPLATES)
@@ -90,7 +90,37 @@ namespace boost { namespace unordered_detail {
#pragma warning(pop)
#endif
+ ////////////////////////////////////////////////////////////////////////////
+ //
+ // This section implements buckets and nodes. Here's a rough
+ // inheritance diagram, to show how they pull together.
+ //
+ // For unordered_set/unordered_map:
+ //
+ // hash_bucket<A>
+ // |
+ // ungrouped_node_base<A> value_base<A::value_type>
+ // | |
+ // +--------------+-------------+
+ // |
+ // hash_node<A, ungrouped>
+ //
+ // For unordered_multiset/unordered_multimap:
+ //
+ // hash_bucket<A>
+ // |
+ // grouped_node_base<A> value_base<A::value_type>
+ // | |
+ // +--------------+-------------+
+ // |
+ // hash_node<A, grouped>
+
// hash_bucket
+ //
+ // hash_bucket is used for both the buckets and as a base class for
+ // nodes. By using 'bucket_ptr' for 'node_ptr', 'next_' can point
+ // to either a bucket or a node. This is used later to implement a
+ // sentinel at the end of the bucket array.
template <class A>
class hash_bucket
@@ -109,6 +139,16 @@ namespace boost { namespace unordered_detail {
hash_bucket() : next_() {}
};
+ // In containers with equivalent keys (unordered_multimap and
+ // unordered_multiset) equivalent nodes are grouped together, in
+ // containers with unique keys (unordered_map and unordered_set)
+ // individual nodes are treated as groups of one. The following two
+ // classes implement the data structure.
+
+ // This is used for containers with unique keys. There are no groups
+ // so it doesn't add any extra members, and just treats individual
+ // nodes as groups of one.
+
template <class A>
struct ungrouped_node_base : hash_bucket<A> {
typedef hash_bucket<A> bucket;
@@ -125,6 +165,10 @@ namespace boost { namespace unordered_detail {
static void unlink_nodes(bucket& b, node_ptr end);
};
+ // This is used for containers with equivalent keys. It implements a
+ // circular list running in the opposite direction to the linked
+ // list through the nodes.
+
template <class A>
struct grouped_node_base : hash_bucket<A>
{
@@ -151,6 +195,10 @@ namespace boost { namespace unordered_detail {
}
};
+ // These two classes implement an easy way to pass around the node
+ // group policy classes without the messy template parameters.
+ // Whenever you see the template parameter 'G' it's one of these.
+
struct ungrouped
{
template <class A>
@@ -167,6 +215,8 @@ namespace boost { namespace unordered_detail {
};
};
+ // The space used to store values in a node.
+
template <class ValueType>
struct value_base
{
@@ -181,6 +231,9 @@ namespace boost { namespace unordered_detail {
value_type& value() {
return *(ValueType*) this;
}
+ value_type* value_ptr() {
+ return (ValueType*) this;
+ }
private:
value_base& operator=(value_base const&);
};
@@ -199,11 +252,20 @@ namespace boost { namespace unordered_detail {
static value_type& get_value(node_ptr p) {
return static_cast<hash_node&>(*p).value();
}
+ static value_type* get_value_ptr(node_ptr p) {
+ return static_cast<hash_node&>(*p).value_ptr();
+ }
private:
hash_node& operator=(hash_node const&);
};
+ ////////////////////////////////////////////////////////////////////////////
+ //
// Iterator Base
+ //
+ // This is the iterator used internally, the external iterators are
+ // provided by lightweight wrappers (hash_iterator and
+ // hast_const_iterator) which provide the full iterator interface.
template <class A, class G>
class hash_iterator_base
@@ -248,12 +310,24 @@ namespace boost { namespace unordered_detail {
}
};
+ ////////////////////////////////////////////////////////////////////////////
+ //
+ // Now the main data structure:
+ //
+ // hash_buckets<A, G> hash_buffered_functions<H, P>
+ // | |
+ // +-------------+--------------+
+ // |
+ // hash_table<T>
+ //
+ // T is a class which contains typedefs for all the types we need.
+
// hash_buckets
//
// This is responsible for allocating and deallocating buckets and nodes.
//
// Notes:
- // 1. For the sake exception safety the allocators themselves don't allocate
+ // 1. For the sake exception safety the consturctors don't allocate
// anything.
// 2. It's the callers responsibility to allocate the buckets before calling
// any of the methods (other than getters and setters).
@@ -327,6 +401,17 @@ namespace boost { namespace unordered_detail {
std::size_t delete_to_bucket_end(node_ptr begin);
};
+ // Assigning and swapping the equality and hash function objects
+ // needs strong exception safety. To implement that normally we'd
+ // require one of them to be known to not throw and the other to
+ // guarantee strong exception safety. Unfortunately they both only
+ // have basic exception safety. So to acheive strong exception
+ // safety we have storage space for two copies, and assign the new
+ // copies to the unused space. Then switch to using that to use
+ // them. This is implemented in 'set_hash_functions' which
+ // atomically assigns the new function objects in a strongly
+ // exception safe manner.
+
template <class H, class P> class set_hash_functions;
template <class H, class P>
@@ -429,6 +514,12 @@ namespace boost { namespace unordered_detail {
}
};
+ // This implements almost all of the required functionality, apart
+ // from some things that are specific to containers with unique and
+ // equivalent keys which is implemented in hash_unique_table and
+ // hash_equivalent_table. See unique.hpp and equivalent.hpp for
+ // their declaration and implementation.
+
template <class T>
class hash_table : public T::buckets, public T::buffered_functions
{
@@ -569,9 +660,13 @@ namespace boost { namespace unordered_detail {
node_constructor&, std::size_t);
};
- // Iterator Access
+ ///////////////////////////////////////////////////////////////////
+ //
+ // Iterators
+
+ // iterator_access is used to access the internal iterator without
+ // making it publicly available.
-#if !defined(__clang__)
class iterator_access
{
public:
@@ -582,30 +677,6 @@ namespace boost { namespace unordered_detail {
return it.base_;
}
};
-#else
- class iterator_access
- {
- public:
- // Note: we access Iterator::base here, rather than in the function
- // signature to work around a bug in the friend support of an
- // early version of clang.
-
- template <class Iterator>
- struct base
- {
- typedef BOOST_DEDUCED_TYPENAME Iterator::base type;
- };
-
- template <class Iterator>
- static BOOST_DEDUCED_TYPENAME base<Iterator>::type const&
- get(Iterator const& it)
- {
- return it.base_;
- }
- };
-#endif
-
- // Iterators
template <class A, class G> class hash_iterator;
template <class A, class G> class hash_const_iterator;
@@ -644,7 +715,7 @@ namespace boost { namespace unordered_detail {
return node::get_value(ptr_);
}
value_type* operator->() const {
- return &node::get_value(ptr_);
+ return node::get_value_ptr(ptr_);
}
hash_local_iterator& operator++() {
ptr_ = ptr_->next_; return *this;
@@ -694,7 +765,7 @@ namespace boost { namespace unordered_detail {
return node::get_value(ptr_);
}
value_type const* operator->() const {
- return &node::get_value(ptr_);
+ return node::get_value_ptr(ptr_);
}
hash_const_local_iterator& operator++() {
ptr_ = ptr_->next_; return *this;
@@ -716,7 +787,7 @@ namespace boost { namespace unordered_detail {
}
};
- // iterators
+ // Iterators
//
// all no throw
@@ -823,7 +894,12 @@ namespace boost { namespace unordered_detail {
}
};
+ ////////////////////////////////////////////////////////////////////////////
+ //
// types
+ //
+ // This is used to convieniently pass around a container's typedefs
+ // without having 7 template parameters.
template <class K, class V, class H, class P, class A, class E, class G>
struct types
diff --git a/3rdParty/Boost/src/boost/unordered/detail/util.hpp b/3rdParty/Boost/src/boost/unordered/detail/util.hpp
index 5540965..989883e 100644
--- a/3rdParty/Boost/src/boost/unordered/detail/util.hpp
+++ b/3rdParty/Boost/src/boost/unordered/detail/util.hpp
@@ -299,7 +299,7 @@ namespace boost { namespace unordered_detail {
#if BOOST_WORKAROUND(__CODEGEARC__, BOOST_TESTED_AT(0x0613))
struct dummy { hash_node<Alloc, Grouped> x; };
#endif
- boost::unordered_detail::destroy(&node_->value());
+ boost::unordered_detail::destroy(node_->value_ptr());
}
if (node_constructed_)
@@ -322,7 +322,7 @@ namespace boost { namespace unordered_detail {
}
else {
BOOST_ASSERT(node_constructed_ && value_constructed_);
- boost::unordered_detail::destroy(&node_->value());
+ boost::unordered_detail::destroy(node_->value_ptr());
value_constructed_ = false;
}
}