Initial Mangos Three Commit

dep/acelite/ace/Based_Pointer_Repository.cpp

@@ -0,0 +1,123 @@
+#include "ace/Map_Manager.h"
+#include "ace/Based_Pointer_Repository.h"
+#include "ace/Guard_T.h"
+#include "ace/Null_Mutex.h"
+#include "ace/Synch_Traits.h"
+#include "ace/RW_Thread_Mutex.h"
+
+#if defined (ACE_HAS_ALLOC_HOOKS)
+# include "ace/Malloc_Base.h"
+#endif /* ACE_HAS_ALLOC_HOOKS */
+
+ACE_BEGIN_VERSIONED_NAMESPACE_DECL
+
+/**
+ * @class ACE_Based_Pointer_Repository_Rep
+ *
+ * @brief Implementation for the ACE_Based_Pointer_Repository.
+ *
+ * Every memory pool in ACE binds it's mapping base address and
+ * the mapped size to this repository every time it maps/remaps a
+ * new chunk of memory successfully.
+ */
+class ACE_Based_Pointer_Repository_Rep
+{
+public:
+  // Useful typedefs.
+  typedef ACE_Map_Manager <void *, size_t, ACE_Null_Mutex> MAP_MANAGER;
+  typedef ACE_Map_Iterator <void *, size_t, ACE_Null_Mutex> MAP_ITERATOR;
+  typedef ACE_Map_Entry <void *, size_t> MAP_ENTRY;
+
+  /// Keeps track of the mapping between addresses and their associated
+  /// values.
+  MAP_MANAGER addr_map_;
+
+  /// Synchronize concurrent access to the map.
+  ACE_SYNCH_MUTEX lock_;
+
+  ACE_ALLOC_HOOK_DECLARE;
+};
+
+ACE_ALLOC_HOOK_DEFINE(ACE_Based_Pointer_Repository_Rep);
+
+ACE_Based_Pointer_Repository::ACE_Based_Pointer_Repository (void)
+{
+  ACE_TRACE ("ACE_Based_Pointer_Repository::ACE_Based_Pointer_Repository");
+  ACE_NEW (this->rep_,
+           ACE_Based_Pointer_Repository_Rep);
+}
+
+ACE_Based_Pointer_Repository::~ACE_Based_Pointer_Repository (void)
+{
+  ACE_TRACE ("ACE_Based_Pointer_Repository::~ACE_Based_Pointer_Repository");
+  delete this->rep_;
+}
+
+// Search for appropriate base address in repository
+
+int
+ACE_Based_Pointer_Repository::find (void *addr, void *&base_addr)
+{
+  ACE_TRACE ("ACE_Based_Pointer_Repository::find");
+  ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, mon, this->rep_->lock_, -1);
+  ACE_Based_Pointer_Repository_Rep::MAP_ENTRY *ce = 0;
+
+  for (ACE_Based_Pointer_Repository_Rep::MAP_ITERATOR iter (this->rep_->addr_map_);
+       iter.next (ce) != 0;
+       iter.advance ())
+    // Check to see if <addr> is within any of the regions.
+    if (addr >= ce->ext_id_
+        && addr < ((char *)ce->ext_id_ + ce->int_id_))
+      {
+        // Assign the base address.
+        base_addr = ce->ext_id_;
+        return 1;
+      }
+
+  // Assume base address 0 (e.g., if new'ed).
+  base_addr = 0;
+  return 0;
+}
+
+// Bind a new entry to the repository or update the size of an
+// existing entry.
+
+int
+ACE_Based_Pointer_Repository::bind (void *addr, size_t size)
+{
+  ACE_TRACE ("ACE_Based_Pointer_Repository::bind");
+  ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, mon, this->rep_->lock_, -1);
+
+  return this->rep_->addr_map_.rebind (addr, size);
+}
+
+// Unbind a base from the repository.
+
+int
+ACE_Based_Pointer_Repository::unbind (void *addr)
+{
+  ACE_TRACE ("ACE_Based_Pointer_Repository::unbind");
+  ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, mon, this->rep_->lock_, -1);
+  ACE_Based_Pointer_Repository_Rep::MAP_ENTRY *ce = 0;
+
+  // Search for service handlers that requested notification.
+
+  for (ACE_Based_Pointer_Repository_Rep::MAP_ITERATOR iter (this->rep_->addr_map_);
+       iter.next (ce) != 0;
+       iter.advance ())
+    {
+      // Check to see if <addr> is within any of the regions and if
+      // so, unbind the key from the map.
+      if (addr >= ce->ext_id_
+          && addr < ((char *)ce->ext_id_ + ce->int_id_))
+        // Unbind base address.
+        return this->rep_->addr_map_.unbind (ce->ext_id_);
+    }
+
+  return 0;
+}
+
+ACE_SINGLETON_TEMPLATE_INSTANTIATE(ACE_Singleton, ACE_Based_Pointer_Repository, ACE_SYNCH_RW_MUTEX);
+
+
+ACE_END_VERSIONED_NAMESPACE_DECL