memory_segment_local.h

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// Copyright (C) 2012-2024 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
#ifndef MEMORY_SEGMENT_LOCAL_H
#define MEMORY_SEGMENT_LOCAL_H
 
#include <util/memory_segment.h>
 
#include <string>
#include <map>
 
namespace isc {
namespace util {
 
class MemorySegmentLocal : public MemorySegment {
public:
    MemorySegmentLocal() : allocated_size_(0) {
    }
 
    virtual ~MemorySegmentLocal() {}
 
    virtual void* allocate(size_t size);
 
    virtual void deallocate(void* ptr, size_t size);
 
    virtual bool allMemoryDeallocated() const;
 
    virtual NamedAddressResult getNamedAddressImpl(const char* name) const;
 
    virtual bool setNamedAddressImpl(const char* name, void* addr);
 
    virtual bool clearNamedAddressImpl(const char* name);
 
private:
    // allocated_size_ can underflow, wrap around to max size_t (which
    // is unsigned). But because we only do a check against 0 and not a
    // relation comparison, this is okay.
    size_t allocated_size_;
 
    std::map<std::string, void*> named_addrs_;
};
 
} // namespace util
} // namespace isc
 
#endif // MEMORY_SEGMENT_LOCAL_H