remove file manager LRU cache from code.

This was a very clever attempt to fix a non-problem. If the platform doesn't have enough file descriptors available
then the platform is broken and we're not going to hack around trying to fix it.

2 files changed, 0 insertions, 215 deletions

diff --git a/libs/pbd/pbd/file_manager.h b/libs/pbd/pbd/file_manager.h
deleted file mode 100644
index d85c88fa46..0000000000
--- a/libs/pbd/pbd/file_manager.h
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
-    Copyright (C) 2010 Paul Davis
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-*/
-
-#ifndef __pbd_file_manager_h__
-#define __pbd_file_manager_h__
-
-#include <sys/types.h>
-#include <string>
-#include <map>
-#include <list>
-#include <glibmm/threads.h>
-
-#include "pbd/libpbd_visibility.h"
-#include "pbd/signals.h"
-
-namespace PBD {
-
-class LIBPBD_API FileManager;
-
-/** Parent class for FileDescriptors.
- *
- *  When a subclass is instantiated, the file it describes is added to a
- *  list.  The FileDescriptor can be `allocated', meaning that its
- *  file will be opened on the filesystem, and can then be `released'.
- *  FileDescriptors are reference counted as they are allocated and
- *  released.  When a descriptor's refcount is 0, the file on the
- *  filesystem is eligible to be closed if necessary to free up file
- *  handles for other files.
- *
- *  The upshot of all this is that Ardour can manage the number of
- *  open files to stay within limits imposed by the operating system.
- */
-	
-class LIBPBD_API FileDescriptor
-{
-public:
-	FileDescriptor (std::string const &, bool);
-	virtual ~FileDescriptor () {}
-
-        const std::string& path() const { return _path; }
-
-	void release ();
-        virtual void set_path (const std::string&);
-
-	/** Emitted when the file is closed */
-	PBD::Signal0<void> Closed;
-
-protected:
-
-	friend class FileManager;
-
-	/* These methods and variables must be called / accessed
-	   with a lock held on the FileManager's mutex
-	*/
-
-	/** @return false on success, true on failure */
-	virtual bool open () = 0;
-	virtual void close () = 0;
-	virtual bool is_open () const = 0;
-
-	int _refcount; ///< number of active users of this file
-	double _last_used; ///< monotonic time that this file was last allocated
-	std::string _path; ///< file path
-	bool _writeable; ///< true if it should be opened writeable, otherwise false
-
-	FileManager* manager ();
-	
-private:
-	
-	static FileManager* _manager;
-};
-
-
-/** FileDescriptor for a file to be opened using POSIX open */	
-class LIBPBD_API FdFileDescriptor : public FileDescriptor
-{
-public:
-	FdFileDescriptor (std::string const & file_name, bool writeable, mode_t mode);
-	~FdFileDescriptor ();
-
-	int allocate ();
-
-private:
-
-	friend class FileManager;
-
-	bool open ();
-	void close ();
-	bool is_open () const;
-
-	int _fd; ///< file descriptor, or -1 if the file is closed
-	mode_t _mode; ///< mode to use when creating files
-};
-
-/** FileDescriptor for a file opened using stdio */
-class LIBPBD_API StdioFileDescriptor : public FileDescriptor
-{
-public:
-	StdioFileDescriptor (std::string const & file_name, std::string const & mode);
-	~StdioFileDescriptor ();
-
-	FILE* allocate ();
-
-private:
-
-	friend class FileManager;
-
-	bool open ();
-	void close ();
-	bool is_open () const;
-
-	FILE* _file;
-	std::string _mode;
-};
-
-
-/** Class to limit the number of files held open */
-class LIBPBD_API FileManager
-{
-public:
-	FileManager ();
-	
-	void add (FileDescriptor *);
-	void remove (FileDescriptor *);
-
-	void release (FileDescriptor *);
-	bool allocate (FileDescriptor *);
-
-private:
-	
-	void close (FileDescriptor *);
-
-	std::list<FileDescriptor*> _files; ///< files we know about
-	Glib::Threads::Mutex _mutex; ///< mutex for _files, _open and FileDescriptor contents
-	int _open; ///< number of open files
-	int _max_open; ///< maximum number of open files
-};
-
-}
-
-#endif
diff --git a/libs/pbd/pbd/sndfile_manager.h b/libs/pbd/pbd/sndfile_manager.h
deleted file mode 100644
index 7abc8ea3d6..0000000000
--- a/libs/pbd/pbd/sndfile_manager.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
-    Copyright (C) 2010 Paul Davis
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
-*/
-
-#ifndef __pbd_sndfile_manager_h__
-#define __pbd_sndfile_manager_h__
-
-#include <sys/types.h>
-#include <string>
-#include <map>
-#include <sndfile.h>
-#include <glibmm/threads.h>
-
-#include "pbd/libpbd_visibility.h"
-#include "pbd/signals.h"
-#include "pbd/file_manager.h"
-
-namespace PBD {
-
-/** FileDescriptor for a file to be opened using libsndfile */	
-class LIBPBD_API SndFileDescriptor : public FileDescriptor
-{
-public:
-	SndFileDescriptor (std::string const & file_name, bool writeable, SF_INFO* info);
-	~SndFileDescriptor ();
-
-	SNDFILE* allocate ();
-
-private:	
-
-	friend class FileManager;
-
-	bool open ();
-	void close ();
-	bool is_open () const;
-
-	SNDFILE* _sndfile; ///< SNDFILE* pointer, or 0 if the file is closed
-	SF_INFO* _info; ///< libsndfile's info for this file
-};
-
-}
-
-#endif /* __pbd_sndfile_manager_h__ */