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Prevector type

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This commit is contained in:
Pieter Wuille
2015-10-29 07:11:24 +01:00
parent 4f09b77c7f
commit 114b5812f6
19 changed files with 874 additions and 68 deletions
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157
src/serialize.h
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@@ -20,7 +20,7 @@
#include <utility>
#include <vector>
class CScript;
#include "prevector.h"
static const unsigned int MAX_SIZE = 0x02000000;
@@ -49,26 +49,26 @@ inline T* NCONST_PTR(const T* val)
* @note These functions avoid the undefined case of indexing into an empty
* vector, as well as that of indexing after the end of the vector.
*/
template <class T, class TAl>
inline T* begin_ptr(std::vector<T,TAl>& v)
template <typename V>
inline typename V::value_type* begin_ptr(V& v)
{
return v.empty() ? NULL : &v[0];
}
/** Get begin pointer of vector (const version) */
template <class T, class TAl>
inline const T* begin_ptr(const std::vector<T,TAl>& v)
template <typename V>
inline const typename V::value_type* begin_ptr(const V& v)
{
return v.empty() ? NULL : &v[0];
}
/** Get end pointer of vector (non-const version) */
template <class T, class TAl>
inline T* end_ptr(std::vector<T,TAl>& v)
template <typename V>
inline typename V::value_type* end_ptr(V& v)
{
return v.empty() ? NULL : (&v[0] + v.size());
}
/** Get end pointer of vector (const version) */
template <class T, class TAl>
inline const T* end_ptr(const std::vector<T,TAl>& v)
template <typename V>
inline const typename V::value_type* end_ptr(const V& v)
{
return v.empty() ? NULL : (&v[0] + v.size());
}
@@ -391,6 +391,12 @@ public:
pbegin = (char*)begin_ptr(v);
pend = (char*)end_ptr(v);
}
template <unsigned int N, typename T, typename S, typename D>
explicit CFlatData(prevector<N, T, S, D> &v)
{
pbegin = (char*)begin_ptr(v);
pend = (char*)end_ptr(v);
}
char* begin() { return pbegin; }
const char* begin() const { return pbegin; }
char* end() { return pend; }
@@ -485,6 +491,20 @@ template<typename C> unsigned int GetSerializeSize(const std::basic_string<C>& s
template<typename Stream, typename C> void Serialize(Stream& os, const std::basic_string<C>& str, int, int=0);
template<typename Stream, typename C> void Unserialize(Stream& is, std::basic_string<C>& str, int, int=0);
/**
* prevector
* prevectors of unsigned char are a special case and are intended to be serialized as a single opaque blob.
*/
template<unsigned int N, typename T> unsigned int GetSerializeSize_impl(const prevector<N, T>& v, int nType, int nVersion, const unsigned char&);
template<unsigned int N, typename T, typename V> unsigned int GetSerializeSize_impl(const prevector<N, T>& v, int nType, int nVersion, const V&);
template<unsigned int N, typename T> inline unsigned int GetSerializeSize(const prevector<N, T>& v, int nType, int nVersion);
template<typename Stream, unsigned int N, typename T> void Serialize_impl(Stream& os, const prevector<N, T>& v, int nType, int nVersion, const unsigned char&);
template<typename Stream, unsigned int N, typename T, typename V> void Serialize_impl(Stream& os, const prevector<N, T>& v, int nType, int nVersion, const V&);
template<typename Stream, unsigned int N, typename T> inline void Serialize(Stream& os, const prevector<N, T>& v, int nType, int nVersion);
template<typename Stream, unsigned int N, typename T> void Unserialize_impl(Stream& is, prevector<N, T>& v, int nType, int nVersion, const unsigned char&);
template<typename Stream, unsigned int N, typename T, typename V> void Unserialize_impl(Stream& is, prevector<N, T>& v, int nType, int nVersion, const V&);
template<typename Stream, unsigned int N, typename T> inline void Unserialize(Stream& is, prevector<N, T>& v, int nType, int nVersion);
/**
* vector
* vectors of unsigned char are a special case and are intended to be serialized as a single opaque blob.
@@ -499,13 +519,6 @@ template<typename Stream, typename T, typename A> void Unserialize_impl(Stream&
template<typename Stream, typename T, typename A, typename V> void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const V&);
template<typename Stream, typename T, typename A> inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion);
/**
* others derived from vector
*/
extern inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion);
template<typename Stream> void Serialize(Stream& os, const CScript& v, int nType, int nVersion);
template<typename Stream> void Unserialize(Stream& is, CScript& v, int nType, int nVersion);
/**
* pair
*/
@@ -587,6 +600,96 @@ void Unserialize(Stream& is, std::basic_string<C>& str, int, int)
/**
* prevector
*/
template<unsigned int N, typename T>
unsigned int GetSerializeSize_impl(const prevector<N, T>& v, int nType, int nVersion, const unsigned char&)
{
return (GetSizeOfCompactSize(v.size()) + v.size() * sizeof(T));
}
template<unsigned int N, typename T, typename V>
unsigned int GetSerializeSize_impl(const prevector<N, T>& v, int nType, int nVersion, const V&)
{
unsigned int nSize = GetSizeOfCompactSize(v.size());
for (typename prevector<N, T>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
nSize += GetSerializeSize((*vi), nType, nVersion);
return nSize;
}
template<unsigned int N, typename T>
inline unsigned int GetSerializeSize(const prevector<N, T>& v, int nType, int nVersion)
{
return GetSerializeSize_impl(v, nType, nVersion, T());
}
template<typename Stream, unsigned int N, typename T>
void Serialize_impl(Stream& os, const prevector<N, T>& v, int nType, int nVersion, const unsigned char&)
{
WriteCompactSize(os, v.size());
if (!v.empty())
os.write((char*)&v[0], v.size() * sizeof(T));
}
template<typename Stream, unsigned int N, typename T, typename V>
void Serialize_impl(Stream& os, const prevector<N, T>& v, int nType, int nVersion, const V&)
{
WriteCompactSize(os, v.size());
for (typename prevector<N, T>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
::Serialize(os, (*vi), nType, nVersion);
}
template<typename Stream, unsigned int N, typename T>
inline void Serialize(Stream& os, const prevector<N, T>& v, int nType, int nVersion)
{
Serialize_impl(os, v, nType, nVersion, T());
}
template<typename Stream, unsigned int N, typename T>
void Unserialize_impl(Stream& is, prevector<N, T>& v, int nType, int nVersion, const unsigned char&)
{
// Limit size per read so bogus size value won't cause out of memory
v.clear();
unsigned int nSize = ReadCompactSize(is);
unsigned int i = 0;
while (i < nSize)
{
unsigned int blk = std::min(nSize - i, (unsigned int)(1 + 4999999 / sizeof(T)));
v.resize(i + blk);
is.read((char*)&v[i], blk * sizeof(T));
i += blk;
}
}
template<typename Stream, unsigned int N, typename T, typename V>
void Unserialize_impl(Stream& is, prevector<N, T>& v, int nType, int nVersion, const V&)
{
v.clear();
unsigned int nSize = ReadCompactSize(is);
unsigned int i = 0;
unsigned int nMid = 0;
while (nMid < nSize)
{
nMid += 5000000 / sizeof(T);
if (nMid > nSize)
nMid = nSize;
v.resize(nMid);
for (; i < nMid; i++)
Unserialize(is, v[i], nType, nVersion);
}
}
template<typename Stream, unsigned int N, typename T>
inline void Unserialize(Stream& is, prevector<N, T>& v, int nType, int nVersion)
{
Unserialize_impl(is, v, nType, nVersion, T());
}
/**
* vector
*/
@@ -677,28 +780,6 @@ inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersio
/**
* others derived from vector
*/
inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion)
{
return GetSerializeSize((const std::vector<unsigned char>&)v, nType, nVersion);
}
template<typename Stream>
void Serialize(Stream& os, const CScript& v, int nType, int nVersion)
{
Serialize(os, (const std::vector<unsigned char>&)v, nType, nVersion);
}
template<typename Stream>
void Unserialize(Stream& is, CScript& v, int nType, int nVersion)
{
Unserialize(is, (std::vector<unsigned char>&)v, nType, nVersion);
}
/**
* pair
*/