Hi
Attached is another diff for a PdfRefCountedBuffer pool allocator. It
works a lot better than mine, but relies on Boost. It's written to be
entirely optional, so if Boost isn't available we just fall back to the
default operator new() transparently.
Thoughts?
--
Craig Ringer
Index: src/PdfRefCountedBuffer.cpp
===================================================================
--- src/PdfRefCountedBuffer.cpp (revision 731)
+++ src/PdfRefCountedBuffer.cpp (working copy)
@@ -22,6 +22,9 @@
namespace PoDoFo {
+#if defined(HAVE_BOOST)
+boost::fast_pool_allocator<PdfRefCountedBuffer::TRefCountedBuffer>
PdfRefCountedBuffer::TRefCountedBuffer::m_pool;
+#endif
#define STREAM_SIZE_INCREASE 1024
@@ -48,6 +51,7 @@
if( m_pBuffer->m_bOnHeap && m_pBuffer->m_bPossesion )
free( m_pBuffer->m_pHeapBuffer );
delete m_pBuffer;
+ m_pBuffer = 0;
}
void PdfRefCountedBuffer::ReallyDetach( long lExtraLen )
@@ -241,5 +245,4 @@
return false;
}
-
};
Index: src/PdfRefCountedBuffer.h
===================================================================
--- src/PdfRefCountedBuffer.h (revision 731)
+++ src/PdfRefCountedBuffer.h (working copy)
@@ -23,6 +23,11 @@
#include "PdfDefines.h"
+#if defined(HAVE_BOOST)
+#include <boost/pool/singleton_pool.hpp>
+#include <boost/pool/pool_alloc.hpp>
+#endif
+
namespace PoDoFo {
/**
@@ -189,6 +194,22 @@
bool m_bPossesion;
// Are we using the heap-allocated buffer in place of our small
internal one?
bool m_bOnHeap;
+
+#if defined(HAVE_BOOST)
+ // Note that the memory allocated here is NOT released until program
exit or explicit
+ // deallocation of the pool. You must call:
+ // boost::singleton_pool<boost::fast_pool_allocator_tag,
sizeof(TRefCountedBuffer)>::release_memory()
+ // to force that.
+ static boost::fast_pool_allocator<TRefCountedBuffer> m_pool;
+ void* operator new(size_t /*size*/)
+ {
+ return m_pool.allocate(1);
+ }
+ PODOFO_NOTHROW void operator delete(void* p)
+ {
+ m_pool.deallocate( static_cast<TRefCountedBuffer*>(p), 1);
+ }
+#endif
};
TRefCountedBuffer* m_pBuffer;
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