1 files changed, 86 insertions, 0 deletions
diff --git a/cpp/src/IceGrid/Allocatable.h b/cpp/src/IceGrid/Allocatable.h
new file mode 100644
index 00000000000..0e315036223
--- /dev/null
+++ b/cpp/src/IceGrid/Allocatable.h
@@ -0,0 +1,86 @@
+// **********************************************************************
+//
+// Copyright (c) 2003-2006 ZeroC, Inc. All rights reserved.
+//
+// This copy of Ice is licensed to you under the terms described in the
+// ICE_LICENSE file included in this distribution.
+//
+// **********************************************************************
+
+#ifndef ICE_GRID_ALLOCATABLE_H
+#define ICE_GRID_ALLOCATABLE_H
+
+#include <IceUtil/Handle.h>
+#include <IceUtil/Mutex.h>
+#include <IceUtil/Shared.h>
+#include <IceUtil/Time.h>
+#include <list>
+
+namespace IceGrid
+{
+
+class SessionI;
+typedef IceUtil::Handle<SessionI> SessionIPtr;
+
+class Allocatable;
+typedef IceUtil::Handle<Allocatable> AllocatablePtr;
+
+class AllocationRequest : public IceUtil::Mutex, public IceUtil::Shared
+{
+public:
+
+    virtual ~AllocationRequest();
+    
+    virtual void timeout() = 0;
+    virtual void allocated(const AllocatablePtr&) = 0;
+    virtual void canceled() = 0;
+
+    bool setAllocatable(const AllocatablePtr&);
+    bool checkTimeout(const IceUtil::Time&);
+    void cancel();
+    void allocate();
+    void release(const SessionIPtr&);
+
+    int getTimeout() const { return _timeout; }
+    const SessionIPtr& getSession() const { return _session; }
+
+    bool operator<(const AllocationRequest&) const;
+
+protected:
+
+    AllocationRequest(const SessionIPtr&);
+
+private:
+
+    const SessionIPtr _session;
+    const int _timeout;
+    const IceUtil::Time _expiration;
+    bool _canceled;
+    AllocatablePtr _allocatable;
+};
+typedef IceUtil::Handle<AllocationRequest> AllocationRequestPtr;
+
+class Allocatable : public IceUtil::Shared
+{
+public:
+
+    Allocatable(bool);
+    virtual ~Allocatable();
+
+    void allocate(const AllocationRequestPtr&, bool);
+    bool tryAllocate(const AllocationRequestPtr&);
+    void release(const SessionIPtr&);
+
+    bool allocatable() const { return _allocatable; }
+
+protected:
+
+    bool _allocatable;
+    IceUtil::Mutex _allocateMutex;
+    std::list<AllocationRequestPtr> _requests;
+    AllocationRequestPtr _allocated;
+};
+
+};
+
+#endif