132 lines
3.7 KiB
C++
132 lines
3.7 KiB
C++
/*
|
|
* Copyright (c) 2001, 2008,
|
|
* DecisionSoft Limited. All rights reserved.
|
|
* Copyright (c) 2004, 2018 Oracle and/or its affiliates. All rights reserved.
|
|
*
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef __BASEMEMORYMANAGER_HPP
|
|
#define __BASEMEMORYMANAGER_HPP
|
|
|
|
#include <xqilla/framework/XQillaExport.hpp>
|
|
#include <xqilla/framework/XPath2MemoryManager.hpp>
|
|
|
|
#include <xercesc/util/RefHashTableOf.hpp>
|
|
|
|
// Define ALLOCATE_IN_CHUNKS to 1 to allocate
|
|
// CHUNK_SIZE blocks of memory at a time, and
|
|
// carve the requested memory from them. The
|
|
// DB XML benchmark suggests this behaves badly
|
|
// with larger data sets. - jpcs
|
|
#define ALLOCATE_IN_CHUNKS 0
|
|
|
|
#define DEBUG_MEMORY_ALLOCD 0x88884444
|
|
#define DEBUG_MEMORY_FREED 0x44442222
|
|
|
|
XERCES_CPP_NAMESPACE_BEGIN
|
|
class DOMNode;
|
|
XERCES_CPP_NAMESPACE_END
|
|
|
|
class VariableStore;
|
|
class Collation;
|
|
class CollationHelper;
|
|
class XQillaNSResolver;
|
|
class StringPool;
|
|
|
|
class XQILLA_API BaseMemoryManager : public XPath2MemoryManager
|
|
{
|
|
public:
|
|
virtual ~BaseMemoryManager();
|
|
|
|
// from MemoryManager
|
|
#if _XERCES_VERSION >= 30000
|
|
virtual void* allocate(XMLSize_t numElements);
|
|
#else
|
|
virtual void* allocate(size_t numElements);
|
|
#endif
|
|
|
|
virtual void deallocate(void* p);
|
|
virtual XERCES_CPP_NAMESPACE_QUALIFIER MemoryManager *getExceptionMemoryManager();
|
|
|
|
/** Returns a copy of the given string */
|
|
virtual const XMLCh* getPooledString(const XMLCh *src);
|
|
virtual const XMLCh* getPooledString(const XMLCh *src, unsigned int length);
|
|
/** Returns a copy of the transcoding of the given string */
|
|
virtual const XMLCh* getPooledString(const char *src);
|
|
|
|
/** Use with extreme caution! */
|
|
virtual void reset();
|
|
|
|
virtual void dumpStatistics() const;
|
|
virtual size_t getAllocatedObjectCount() const { return objectsAllocated_; }
|
|
virtual size_t getTotalAllocatedMemory() const { return totalMemoryAllocated_; }
|
|
virtual const StringPool *getStringPool() const {
|
|
return fStringPool;
|
|
}
|
|
|
|
/** create a collation */
|
|
virtual Collation* createCollation(CollationHelper* helper);
|
|
|
|
/** create a resolver */
|
|
virtual XQillaNSResolver* createNSResolver(XERCES_CPP_NAMESPACE_QUALIFIER DOMNode *resolverNode);
|
|
|
|
/** create a store for variables */
|
|
virtual VariableTypeStore* createVariableTypeStore();
|
|
|
|
/** create a ATDecimalOrDerived for the given integer */
|
|
virtual ATDecimalOrDerived* createInteger(int value);
|
|
|
|
protected:
|
|
virtual void initialise();
|
|
virtual void releaseAll();
|
|
|
|
virtual void *internal_allocate(size_t size) = 0;
|
|
virtual void internal_deallocate(void *p) = 0;
|
|
|
|
struct XQILLA_API MemList {
|
|
MemList *prev;
|
|
MemList *next;
|
|
size_t size;
|
|
#if ALLOCATE_IN_CHUNKS
|
|
size_t remaining;
|
|
unsigned int allocCount;
|
|
#endif
|
|
#if DEBUG_MEMORY
|
|
unsigned long magic;
|
|
#endif
|
|
};
|
|
|
|
#if ALLOCATE_IN_CHUNKS
|
|
struct XQILLA_API MemAlloc {
|
|
MemList *list;
|
|
};
|
|
#endif
|
|
|
|
MemList *fCurrentBlock;
|
|
|
|
size_t objectsAllocated_;
|
|
size_t totalMemoryAllocated_;
|
|
|
|
StringPool *fStringPool;
|
|
|
|
#if _XERCES_VERSION >= 30000
|
|
XERCES_CPP_NAMESPACE_QUALIFIER RefHashTableOf<ATDecimalOrDerived, XERCES_CPP_NAMESPACE_QUALIFIER PtrHasher>* fIntegerPool;
|
|
#else
|
|
XERCES_CPP_NAMESPACE_QUALIFIER RefHashTableOf<ATDecimalOrDerived>* fIntegerPool;
|
|
#endif
|
|
};
|
|
|
|
#endif
|
|
|