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

1 files changed, 38 insertions, 1 deletions

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*/