7ff370e798
git-svn-id: svn://localhost/ardour2/branches/undo@638 d708f5d6-7413-0410-9779-e7cbd77b26cf
145 lines
3.3 KiB
C++
145 lines
3.3 KiB
C++
/*
|
|
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
|
|
(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.
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#include <iostream>
|
|
#include <vector>
|
|
|
|
#include <pbd/pool.h>
|
|
#include <pbd/error.h>
|
|
|
|
using namespace std;
|
|
using namespace PBD;
|
|
|
|
Pool::Pool (string n, unsigned long item_size, unsigned long nitems)
|
|
{
|
|
_name = n;
|
|
|
|
free_list = new RingBuffer<void*> (nitems);
|
|
|
|
/* since some overloaded ::operator new() might use this,
|
|
its important that we use a "lower level" allocator to
|
|
get more space.
|
|
*/
|
|
|
|
block = malloc (nitems * item_size);
|
|
|
|
void **ptrlist = (void **) malloc (sizeof (void *) * nitems);
|
|
|
|
for (unsigned long i = 0; i < nitems; i++) {
|
|
ptrlist[i] = static_cast<void *> (static_cast<char*>(block) + (i * item_size));
|
|
}
|
|
|
|
free_list->write (ptrlist, nitems);
|
|
|
|
free (ptrlist);
|
|
}
|
|
|
|
Pool::~Pool ()
|
|
{
|
|
free (block);
|
|
}
|
|
|
|
void *
|
|
Pool::alloc ()
|
|
{
|
|
void *ptr;
|
|
|
|
// cerr << _name << " pool " << " alloc, thread = " << pthread_name() << " space = " << free_list->read_space() << endl;
|
|
|
|
if (free_list->read (&ptr, 1) < 1) {
|
|
fatal << "CRITICAL: " << _name << " POOL OUT OF MEMORY - RECOMPILE WITH LARGER SIZE!!" << endmsg;
|
|
/*NOTREACHED*/
|
|
return 0;
|
|
} else {
|
|
return ptr;
|
|
}
|
|
};
|
|
|
|
void
|
|
Pool::release (void *ptr)
|
|
{
|
|
free_list->write (&ptr, 1);
|
|
// cerr << _name << ": release, now has " << free_list->read_space() << endl;
|
|
}
|
|
|
|
/*---------------------------------------------*/
|
|
|
|
MultiAllocSingleReleasePool::MultiAllocSingleReleasePool (string n, unsigned long isize, unsigned long nitems)
|
|
: Pool (n, isize, nitems),
|
|
m_lock(0)
|
|
{
|
|
}
|
|
|
|
MultiAllocSingleReleasePool::~MultiAllocSingleReleasePool ()
|
|
{
|
|
if(m_lock) delete m_lock;
|
|
}
|
|
|
|
SingleAllocMultiReleasePool::SingleAllocMultiReleasePool (string n, unsigned long isize, unsigned long nitems)
|
|
: Pool (n, isize, nitems),
|
|
m_lock(0)
|
|
{
|
|
}
|
|
|
|
SingleAllocMultiReleasePool::~SingleAllocMultiReleasePool ()
|
|
{
|
|
if(m_lock) delete m_lock;
|
|
}
|
|
|
|
void*
|
|
MultiAllocSingleReleasePool::alloc ()
|
|
{
|
|
void *ptr;
|
|
if(!m_lock) {
|
|
m_lock = new Glib::Mutex();
|
|
// umm, I'm not sure that this doesn't also allocate memory.
|
|
if(!m_lock) error << "cannot create Glib::Mutex in pool.cc" << endmsg;
|
|
}
|
|
|
|
Glib::Mutex::Lock guard(*m_lock);
|
|
ptr = Pool::alloc ();
|
|
return ptr;
|
|
}
|
|
|
|
void
|
|
MultiAllocSingleReleasePool::release (void* ptr)
|
|
{
|
|
Pool::release (ptr);
|
|
}
|
|
|
|
void*
|
|
SingleAllocMultiReleasePool::alloc ()
|
|
{
|
|
return Pool::alloc ();
|
|
}
|
|
|
|
void
|
|
SingleAllocMultiReleasePool::release (void* ptr)
|
|
{
|
|
if(!m_lock) {
|
|
m_lock = new Glib::Mutex();
|
|
// umm, I'm not sure that this doesn't also allocate memory.
|
|
if(!m_lock) error << "cannot create Glib::Mutex in pool.cc" << endmsg;
|
|
}
|
|
Glib::Mutex::Lock guard(*m_lock);
|
|
Pool::release (ptr);
|
|
}
|
|
|