From 71da9925ec7ce1454d4d5e557fa69fc2fa8bdce5 Mon Sep 17 00:00:00 2001
From: dimitr <dimitr@users.sourceforge.net>
Date: Thu, 20 Mar 2008 16:41:17 +0000
Subject: [PATCH] 1) Added proper handle validation for dbb. 2) Changed
 dbb_sync lifestyle handling. 3) Sync'ed access to the att_long_locks.

---
 src/common/classes/PublicHandle.cpp | 73 +++++++++++++++++++++++++++++
 src/common/classes/PublicHandle.h   | 47 +++++++++++++++++++
 2 files changed, 120 insertions(+)
 create mode 100644 src/common/classes/PublicHandle.cpp
 create mode 100644 src/common/classes/PublicHandle.h

diff --git a/src/common/classes/PublicHandle.cpp b/src/common/classes/PublicHandle.cpp
new file mode 100644
index 0000000000..f6db47d1b6
--- /dev/null
+++ b/src/common/classes/PublicHandle.cpp
@@ -0,0 +1,73 @@
+/*
+ *  The contents of this file are subject to the Initial
+ *  Developer's Public License Version 1.0 (the "License");
+ *  you may not use this file except in compliance with the
+ *  License. You may obtain a copy of the License at
+ *  http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
+ *
+ *  Software distributed under the License is distributed AS IS,
+ *  WITHOUT WARRANTY OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing rights
+ *  and limitations under the License.
+ *
+ *  The Original Code was created by Dmitry Yemanov
+ *  for the Firebird Open Source RDBMS project.
+ *
+ *  Copyright (c) 2008 Dmitry Yemanov <dimitr@users.sf.net>
+ *  and all contributors signed below.
+ *
+ *  All Rights Reserved.
+ *  Contributor(s): ______________________________________.
+ */
+
+#include "firebird.h"
+#include "../jrd/gdsassert.h"
+#include "PublicHandle.h"
+
+namespace Firebird
+{
+	GlobalPtr<Array<const void*> > PublicHandle::handles;
+	GlobalPtr<RWLock> PublicHandle::sync;
+
+	PublicHandle::PublicHandle()
+	{
+		WriteLockGuard guard(sync);
+
+		size_t pos;
+		if (handles->find(this, pos))
+		{
+			fb_assert(false);
+		}
+		else
+		{
+			handles->add(this);
+		}
+	}
+
+	PublicHandle::~PublicHandle()
+	{
+		WriteLockGuard guard(sync);
+
+		size_t pos;
+		if (handles->find(this, pos))
+		{
+			handles->remove(pos);
+		}
+		else
+		{
+			fb_assert(false);
+		}
+	}
+
+	bool PublicHandle::isKnownHandle() const
+	{
+		if (!this)
+		{
+			return false;
+		}
+
+		ReadLockGuard guard(sync);
+		return handles->exist(this);
+	}
+
+} // namespace
diff --git a/src/common/classes/PublicHandle.h b/src/common/classes/PublicHandle.h
new file mode 100644
index 0000000000..1954dbc350
--- /dev/null
+++ b/src/common/classes/PublicHandle.h
@@ -0,0 +1,47 @@
+/*
+ *  The contents of this file are subject to the Initial
+ *  Developer's Public License Version 1.0 (the "License");
+ *  you may not use this file except in compliance with the
+ *  License. You may obtain a copy of the License at
+ *  http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
+ *
+ *  Software distributed under the License is distributed AS IS,
+ *  WITHOUT WARRANTY OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing rights
+ *  and limitations under the License.
+ *
+ *  The Original Code was created by Dmitry Yemanov
+ *  for the Firebird Open Source RDBMS project.
+ *
+ *  Copyright (c) 2008 Dmitry Yemanov <dimitr@users.sf.net>
+ *  and all contributors signed below.
+ *
+ *  All Rights Reserved.
+ *  Contributor(s): ______________________________________.
+ */
+
+#ifndef COMMON_PUBLIC_HANDLE
+#define COMMON_PUBLIC_HANDLE
+
+#include "../common/classes/array.h"
+#include "../common/classes/rwlock.h"
+#include "../common/classes/init.h"
+
+namespace Firebird
+{
+	class PublicHandle
+	{
+	public:
+		PublicHandle();
+		~PublicHandle();
+
+		bool isKnownHandle() const;
+
+	private:
+		static GlobalPtr<Array<const void*> > handles;
+		static GlobalPtr<RWLock> sync;
+	};
+
+}; // namespace
+
+#endif // COMMON_PUBLIC_HANDLE