remove empty sigc++2 directory

git-svn-id: svn://localhost/ardour2/branches/3.0@3432 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 0 insertions, 281 deletions

diff --git a/libs/pbd/pbd/ringbuffer.h b/libs/pbd/pbd/ringbuffer.h
deleted file mode 100644
index 3502bed21b..0000000000
--- a/libs/pbd/pbd/ringbuffer.h
+++ /dev/null
@@ -1,281 +0,0 @@
-/*
-    Copyright (C) 2000 Paul Davis & Benno Senoner
-
-    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 ringbuffer_h
-#define ringbuffer_h
-
-#include <cstring>
-#include <glib.h>
-
-template<class T>
-class RingBuffer 
-{
-  public:
-	RingBuffer (guint sz) {
-//	size = ffs(sz); /* find first [bit] set is a single inlined assembly instruction. But it looks like the API rounds up so... */
-	guint power_of_two;
-	for (power_of_two = 1; 1U<<power_of_two < sz; power_of_two++);
-		size = 1<<power_of_two;
-		size_mask = size;
-		size_mask -= 1;
-		buf = new T[size];
-		reset ();
-
-	};
-	
-	virtual ~RingBuffer() {
-		delete [] buf;
-	}
-
-	void reset () {
-		/* !!! NOT THREAD SAFE !!! */
-		g_atomic_int_set (&write_idx, 0);
-		g_atomic_int_set (&read_idx, 0);
-	}
-
-	void set (guint r, guint w) {
-		/* !!! NOT THREAD SAFE !!! */
-		g_atomic_int_set (&write_idx, w);
-		g_atomic_int_set (&read_idx, r);
-	}
-	
-	guint read  (T *dest, guint cnt);
-	guint  write (T *src, guint cnt);
-
-	struct rw_vector {
-	    T *buf[2];
-	    guint len[2];
-	};
-
-	void get_read_vector (rw_vector *);
-	void get_write_vector (rw_vector *);
-	
-	void decrement_read_idx (guint cnt) {
-		g_atomic_int_set (&read_idx, (g_atomic_int_get(&read_idx) - cnt) & size_mask);
-	}                
-
-	void increment_read_idx (guint cnt) {
-		g_atomic_int_set (&read_idx, (g_atomic_int_get(&read_idx) + cnt) & size_mask);
-	}                
-
-	void increment_write_idx (guint cnt) {
-		g_atomic_int_set (&write_idx,  (g_atomic_int_get(&write_idx) + cnt) & size_mask);
-	}                
-
-	guint write_space () {
-		guint w, r;
-		
-		w = g_atomic_int_get (&write_idx);
-		r = g_atomic_int_get (&read_idx);
-		
-		if (w > r) {
-			return ((r - w + size) & size_mask) - 1;
-		} else if (w < r) {
-			return (r - w) - 1;
-		} else {
-			return size - 1;
-		}
-	}
-	
-	guint read_space () {
-		guint w, r;
-		
-		w = g_atomic_int_get (&write_idx);
-		r = g_atomic_int_get (&read_idx);
-		
-		if (w > r) {
-			return w - r;
-		} else {
-			return (w - r + size) & size_mask;
-		}
-	}
-
-	T *buffer () { return buf; }
-	guint get_write_idx () const { return g_atomic_int_get (&write_idx); }
-	guint get_read_idx () const { return g_atomic_int_get (&read_idx); }
-	guint bufsize () const { return size; }
-
-  protected:
-	T *buf;
-	guint size;
-	mutable gint write_idx;
-	mutable gint read_idx;
-	guint size_mask;
-};
-
-template<class T> guint 
-RingBuffer<T>::read (T *dest, guint cnt)
-{
-        guint free_cnt;
-        guint cnt2;
-        guint to_read;
-        guint n1, n2;
-        guint priv_read_idx;
-
-        priv_read_idx=g_atomic_int_get(&read_idx);
-
-        if ((free_cnt = read_space ()) == 0) {
-                return 0;
-        }
-
-        to_read = cnt > free_cnt ? free_cnt : cnt;
-        
-        cnt2 = priv_read_idx + to_read;
-
-        if (cnt2 > size) {
-                n1 = size - priv_read_idx;
-                n2 = cnt2 & size_mask;
-        } else {
-                n1 = to_read;
-                n2 = 0;
-        }
-        
-        memcpy (dest, &buf[priv_read_idx], n1 * sizeof (T));
-        priv_read_idx = (priv_read_idx + n1) & size_mask;
-
-        if (n2) {
-                memcpy (dest+n1, buf, n2 * sizeof (T));
-                priv_read_idx = n2;
-        }
-
-        g_atomic_int_set(&read_idx, priv_read_idx);
-        return to_read;
-}
-
-template<class T> guint
-RingBuffer<T>::write (T *src, guint cnt)
-
-{
-        guint free_cnt;
-        guint cnt2;
-        guint to_write;
-        guint n1, n2;
-        guint priv_write_idx;
-
-        priv_write_idx=g_atomic_int_get(&write_idx);
-
-        if ((free_cnt = write_space ()) == 0) {
-                return 0;
-        }
-
-        to_write = cnt > free_cnt ? free_cnt : cnt;
-        
-        cnt2 = priv_write_idx + to_write;
-
-        if (cnt2 > size) {
-                n1 = size - priv_write_idx;
-                n2 = cnt2 & size_mask;
-        } else {
-                n1 = to_write;
-                n2 = 0;
-        }
-
-        memcpy (&buf[priv_write_idx], src, n1 * sizeof (T));
-        priv_write_idx = (priv_write_idx + n1) & size_mask;
-
-        if (n2) {
-                memcpy (buf, src+n1, n2 * sizeof (T));
-                priv_write_idx = n2;
-        }
-
-        g_atomic_int_set(&write_idx, priv_write_idx);
-        return to_write;
-}
-
-template<class T> void
-RingBuffer<T>::get_read_vector (RingBuffer<T>::rw_vector *vec)
-
-{
-	guint free_cnt;
-	guint cnt2;
-	guint w, r;
-	
-	w = g_atomic_int_get (&write_idx);
-	r = g_atomic_int_get (&read_idx);
-	
-	if (w > r) {
-		free_cnt = w - r;
-	} else {
-		free_cnt = (w - r + size) & size_mask;
-	}
-
-	cnt2 = r + free_cnt;
-
-	if (cnt2 > size) {
-		/* Two part vector: the rest of the buffer after the
-		   current write ptr, plus some from the start of 
-		   the buffer.
-		*/
-
-		vec->buf[0] = &buf[r];
-		vec->len[0] = size - r;
-		vec->buf[1] = buf;
-		vec->len[1] = cnt2 & size_mask;
-
-	} else {
-		
-		/* Single part vector: just the rest of the buffer */
-		
-		vec->buf[0] = &buf[r];
-		vec->len[0] = free_cnt;
-		vec->len[1] = 0;
-	}
-}
-
-template<class T> void
-RingBuffer<T>::get_write_vector (RingBuffer<T>::rw_vector *vec)
-
-{
-	guint free_cnt;
-	guint cnt2;
-	guint w, r;
-	
-	w = g_atomic_int_get (&write_idx);
-	r = g_atomic_int_get (&read_idx);
-	
-	if (w > r) {
-		free_cnt = ((r - w + size) & size_mask) - 1;
-	} else if (w < r) {
-		free_cnt = (r - w) - 1;
-	} else {
-		free_cnt = size - 1;
-	}
-	
-	cnt2 = w + free_cnt;
-
-	if (cnt2 > size) {
-		
-		/* Two part vector: the rest of the buffer after the
-		   current write ptr, plus some from the start of 
-		   the buffer.
-		*/
-
-		vec->buf[0] = &buf[w];
-		vec->len[0] = size - w;
-		vec->buf[1] = buf;
-		vec->len[1] = cnt2 & size_mask;
-	} else {
-		vec->buf[0] = &buf[w];
-		vec->len[0] = free_cnt;
-		vec->len[1] = 0;
-	}
-}
-
-
-#endif /* __ringbuffer_h__ */