From 248f1fe188fe2307b9dcf2c87a83b653eaa1920c Mon Sep 17 00:00:00 2001
From: "Rafael H. Schloming" <rhs@apache.org>
Date: Sat, 26 Dec 2009 12:42:57 +0000
Subject: synchronized with trunk except for ruby dir

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/qpid.rnr@893970 13f79535-47bb-0310-9956-ffa450edef68
---
 cpp/src/qpid/sys/LockFile.h | 39 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 38 insertions(+), 1 deletion(-)

(limited to 'cpp/src/qpid/sys/LockFile.h')

diff --git a/cpp/src/qpid/sys/LockFile.h b/cpp/src/qpid/sys/LockFile.h
index f06cd6a47d..14a76cbf3e 100644
--- a/cpp/src/qpid/sys/LockFile.h
+++ b/cpp/src/qpid/sys/LockFile.h
@@ -19,7 +19,44 @@
  *
  */
 
-#include "posix/LockFile.h"
+#include <boost/noncopyable.hpp>
+#include <boost/shared_ptr.hpp>
+#include <string>
+
+#include "qpid/CommonImportExport.h"
+#include "qpid/sys/IntegerTypes.h"
+
+namespace qpid {
+namespace sys {
+
+class LockFilePrivate;
+
+/**
+ * @class LockFile
+ *
+ * LockFile represents a locked file suitable for a coarse-grain system
+ * lock. For example, the broker uses this to ensure that only one broker
+ * runs. A common usage idiom is to store the current "owner" process ID
+ * in the lock file - if the lock file exists, but the stored process ID
+ * doesn't, the old owner has probably died without cleaning up the lock
+ * file.
+ */
+class LockFile : private boost::noncopyable
+{
+    std::string path;
+    bool created;
+    boost::shared_ptr<LockFilePrivate> impl;
+
+protected:
+    int read(void*, size_t) const;
+    int write(void*, size_t) const;
+
+public:
+    QPID_COMMON_EXTERN LockFile(const std::string& path_, bool create);
+    QPID_COMMON_EXTERN ~LockFile();
+};
+ 
+}}   /* namespace qpid::sys */
 
 #endif /*!_sys_LockFile_h*/
 
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