Towards fixing AU preset invalidation

[ardour.git] / libs / pbd / pbd / pool.h

diff --git a/libs/pbd/pbd/pool.h b/libs/pbd/pbd/pool.h
index 1c9ac81a3e30f774929d468be508d29f7eba18a9..1afa8d7af9fc13a43affeafc06c6c7f6b397a338 100644 (file)
--- a/libs/pbd/pbd/pool.h
+++ b/libs/pbd/pbd/pool.h
@@ -1,6 +1,6 @@
 /*
     Copyright (C) 1998-99 Paul Barton-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
@@ -31,7 +31,7 @@
 /** A pool of data items that can be allocated, read from and written to
  *  without system memory allocation or locking.
  */
-class LIBPBD_API Pool 
+class LIBPBD_API Pool
 {
   public:
        Pool (std::string name, unsigned long item_size, unsigned long nitems);
@@ -39,18 +39,21 @@ class LIBPBD_API Pool
 
        virtual void *alloc ();
        virtual void release (void *);
-       
+
        std::string name() const { return _name; }
        guint available() const { return free_list.read_space(); }
        guint used() const { return free_list.bufsize() - available(); }
        guint total() const { return free_list.bufsize(); }
-       
+
   protected:
-       RingBuffer<void*> free_list; ///< a list of pointers to free items within block
+       PBD::RingBuffer<void*> free_list; ///< a list of pointers to free items within block
        std::string _name;
 
   private:
        void *block; ///< data storage area
+#ifndef NDEBUG
+       unsigned long max_usage;
+#endif
 };
 
 class LIBPBD_API SingleAllocMultiReleasePool : public Pool
@@ -84,15 +87,15 @@ class LIBPBD_API PerThreadPool;
 
 /** Management of a per-thread pool of data that is allocated by one thread and
  *  freed by one other thread. Not safe for use when there is more than 1
- *  reader and 1 writer. 
+ *  reader and 1 writer.
  *
- *  This is basically a wrapper around a thread-local storage instance of a 
+ *  This is basically a wrapper around a thread-local storage instance of a
  *  ringbuffer, made safe for use in the case where multiple threads allocate
  *  from the ringbuffer and a single thread "frees" the allocations.
- * 
+ *
  *  Rather than using locks, each thread has its own ringbuffer (and associated
  *  data), and so it calls alloc(), passes a pointer to the result of the alloc
- *  to another thread, which later calls push() to "free" it. 
+ *  to another thread, which later calls push() to "free" it.
  */
 class LIBPBD_API CrossThreadPool : public Pool
 {
@@ -113,7 +116,7 @@ class LIBPBD_API CrossThreadPool : public Pool
        void flush_pending_with_ev (void*);
 
   private:
-       RingBuffer<void*> pending;
+       PBD::RingBuffer<void*> pending;
        PerThreadPool* _parent;
 };
 
@@ -122,24 +125,24 @@ class LIBPBD_API CrossThreadPool : public Pool
  */
 class LIBPBD_API PerThreadPool
 {
-  public:
+public:
        PerThreadPool ();
 
-        const Glib::Threads::Private<CrossThreadPool>& key() const { return _key; }
+       const Glib::Threads::Private<CrossThreadPool>& key() const { return _key; }
 
        void  create_per_thread_pool (std::string name, unsigned long item_size, unsigned long nitems);
-       CrossThreadPool* per_thread_pool ();
-
-       void set_trash (RingBuffer<CrossThreadPool*>* t);
+       CrossThreadPool* per_thread_pool (bool must_exist = true);
+       bool has_per_thread_pool ();
+       void set_trash (PBD::RingBuffer<CrossThreadPool*>* t);
        void add_to_trash (CrossThreadPool *);
 
-  private:
-        Glib::Threads::Private<CrossThreadPool> _key;
+private:
+       Glib::Threads::Private<CrossThreadPool> _key;
        std::string _name;
 
        /** mutex to protect either changes to the _trash variable, or writes to the RingBuffer */
-        Glib::Threads::Mutex _trash_mutex;
-       RingBuffer<CrossThreadPool*>* _trash;
+       Glib::Threads::Mutex _trash_mutex;
+       PBD::RingBuffer<CrossThreadPool*>* _trash;
 };
 
 #endif // __qm_pool_h__