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SGRefObject.cpp
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00001 /*
00002  * This program is free software; you can redistribute it and/or modify
00003  * it under the terms of the GNU General Public License as published by
00004  * the Free Software Foundation; either version 3 of the License, or
00005  * (at your option) any later version.
00006  *
00007  * Written (W) 2008-2009 Soeren Sonnenburg
00008  * Written (W) 2011-2013 Heiko Strathmann
00009  * Written (W) 2013 Thoralf Klein
00010  * Copyright (C) 2008-2009 Fraunhofer Institute FIRST and Max Planck Society
00011  */
00012 
00013 #include <shogun/base/init.h>
00014 #include <shogun/base/SGRefObject.h>
00015 #include <shogun/io/SGIO.h>
00016 
00017 #include <stdlib.h>
00018 #include <stdio.h>
00019 
00020 using namespace shogun;
00021 
00022 SGRefObject::SGRefObject()
00023 {
00024     init();
00025     m_refcount = new RefCount(0);
00026 
00027     SG_SGCDEBUG("SGRefObject created (%p)\n", this)
00028 }
00029 
00030 SGRefObject::SGRefObject(const SGRefObject& orig)
00031 {
00032     init();
00033     m_refcount = orig.m_refcount;
00034     SG_REF(this);
00035 }
00036 
00037 SGRefObject::~SGRefObject()
00038 {
00039     SG_SGCDEBUG("SGRefObject destroyed (%p)\n", this)
00040     delete m_refcount;
00041 }
00042 
00043 #ifdef USE_REFERENCE_COUNTING
00044 int32_t SGRefObject::ref()
00045 {
00046     int32_t count = m_refcount->ref();
00047     SG_SGCDEBUG("ref() refcount %ld obj %s (%p) increased\n", count, this->get_name(), this)
00048     return m_refcount->ref_count();
00049 }
00050 
00051 int32_t SGRefObject::ref_count()
00052 {
00053     int32_t count = m_refcount->ref_count();
00054     SG_SGCDEBUG("ref_count(): refcount %d, obj %s (%p)\n", count, this->get_name(), this)
00055     return m_refcount->ref_count();
00056 }
00057 
00058 int32_t SGRefObject::unref()
00059 {
00060     int32_t count = m_refcount->unref();
00061     if (count<=0)
00062     {
00063         SG_SGCDEBUG("unref() refcount %ld, obj %s (%p) destroying\n", count, this->get_name(), this)
00064         delete this;
00065         return 0;
00066     }
00067     else
00068     {
00069         SG_SGCDEBUG("unref() refcount %ld obj %s (%p) decreased\n", count, this->get_name(), this)
00070         return m_refcount->ref_count();
00071     }
00072 }
00073 #endif //USE_REFERENCE_COUNTING
00074 
00075 #ifdef TRACE_MEMORY_ALLOCS
00076 #include <shogun/lib/Map.h>
00077 extern CMap<void*, shogun::MemoryBlock>* sg_mallocs;
00078 #endif
00079 
00080 void SGRefObject::init()
00081 {
00082 #ifdef TRACE_MEMORY_ALLOCS
00083     if (sg_mallocs)
00084     {
00085         int32_t idx=sg_mallocs->index_of(this);
00086         if (idx>-1)
00087         {
00088             MemoryBlock* b=sg_mallocs->get_element_ptr(idx);
00089             b->set_sgobject();
00090         }
00091     }
00092 #endif
00093 }
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