X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fpbd%2Fpbd%2Fpool.h;h=edc247332e2aacb6dd0e603e5f09c5bce52e57d7;hb=ea48c56061aa7324b076ab01ee408005a46bae8e;hp=58c5861d23341260dabdd9b4a5c71cdea13a0a61;hpb=b924ba9cebfa6b720ee7878dbf894e1d63990fef;p=ardour.git

diff --git a/libs/pbd/pbd/pool.h b/libs/pbd/pbd/pool.h
index 58c5861d23..edc247332e 100644
--- 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
@@ -25,12 +25,13 @@
 
 #include <glibmm/threads.h>
 
+#include "pbd/libpbd_visibility.h"
 #include "pbd/ringbuffer.h"
 
 /** A pool of data items that can be allocated, read from and written to
  *  without system memory allocation or locking.
  */
-class Pool 
+class LIBPBD_API Pool
 {
   public:
 	Pool (std::string name, unsigned long item_size, unsigned long nitems);
@@ -38,8 +39,11 @@ class 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
@@ -47,9 +51,12 @@ class Pool
 
   private:
 	void *block; ///< data storage area
+#ifndef NDEBUG
+	unsigned long max_usage;
+#endif
 };
 
-class SingleAllocMultiReleasePool : public Pool
+class LIBPBD_API SingleAllocMultiReleasePool : public Pool
 {
   public:
 	SingleAllocMultiReleasePool (std::string name, unsigned long item_size, unsigned long nitems);
@@ -63,7 +70,7 @@ class SingleAllocMultiReleasePool : public Pool
 };
 
 
-class MultiAllocSingleReleasePool : public Pool
+class LIBPBD_API MultiAllocSingleReleasePool : public Pool
 {
   public:
 	MultiAllocSingleReleasePool (std::string name, unsigned long item_size, unsigned long nitems);
@@ -76,21 +83,21 @@ class MultiAllocSingleReleasePool : public Pool
         Glib::Threads::Mutex m_lock;
 };
 
-class PerThreadPool;
+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 CrossThreadPool : public Pool
+class LIBPBD_API CrossThreadPool : public Pool
 {
   public:
 	CrossThreadPool (std::string n, unsigned long isize, unsigned long nitems, PerThreadPool *);
@@ -103,7 +110,11 @@ class CrossThreadPool : public Pool
 	}
 
 	bool empty ();
-	
+	guint pending_size() const { return pending.read_space(); }
+
+	void flush_pending ();
+	void flush_pending_with_ev (void*);
+
   private:
 	RingBuffer<void*> pending;
 	PerThreadPool* _parent;
@@ -112,7 +123,7 @@ class CrossThreadPool : public Pool
 /** A class to manage per-thread pools of memory.  One object of this class is instantiated,
  *  and then it is used to create per-thread pools for 1 or more threads as required.
  */
-class PerThreadPool
+class LIBPBD_API PerThreadPool
 {
   public:
 	PerThreadPool ();
@@ -120,16 +131,14 @@ class PerThreadPool
         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 ();
-
+	CrossThreadPool* per_thread_pool (bool must_exist = true);
+	bool has_per_thread_pool ();
 	void set_trash (RingBuffer<CrossThreadPool*>* t);
 	void add_to_trash (CrossThreadPool *);
 
   private:
         Glib::Threads::Private<CrossThreadPool> _key;
 	std::string _name;
-	unsigned long _item_size;
-	unsigned long _nitems;
 
 	/** mutex to protect either changes to the _trash variable, or writes to the RingBuffer */
         Glib::Threads::Mutex _trash_mutex;