/*
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
/** 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);
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
/** 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
{
}
bool empty ();
-
+ guint pending_size() const { return pending.read_space(); }
+
+ void flush_pending ();
+ void flush_pending_with_ev (void*);
+
private:
- RingBuffer<void*> pending;
+ PBD::RingBuffer<void*> pending;
PerThreadPool* _parent;
};
*/
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;
- 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;
- RingBuffer<CrossThreadPool*>* _trash;
+ Glib::Threads::Mutex _trash_mutex;
+ PBD::RingBuffer<CrossThreadPool*>* _trash;
};
#endif // __qm_pool_h__