1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2012 The Bitcoin developers
3 // Distributed under the MIT/X11 software license, see the accompanying
4 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
5 #ifndef BITCOIN_SERIALIZE_H
6 #define BITCOIN_SERIALIZE_H
17 #include <boost/type_traits/is_fundamental.hpp>
18 #include <boost/tuple/tuple.hpp>
19 #include <boost/tuple/tuple_comparison.hpp>
20 #include <boost/tuple/tuple_io.hpp>
22 typedef long long int64;
23 typedef unsigned long long uint64;
26 #define _WIN32_WINNT 0x0501
27 #define WIN32_LEAN_AND_MEAN 1
32 // This is used to attempt to keep keying material out of swap
33 // Note that VirtualLock does not provide this as a guarantee on Windows,
34 // but, in practice, memory that has been VirtualLock'd almost never gets written to
35 // the pagefile except in rare circumstances where memory is extremely low.
36 #define mlock(p, n) VirtualLock((p), (n));
37 #define munlock(p, n) VirtualUnlock((p), (n));
41 /* This comes from limits.h if it's not defined there set a sane default */
44 #define PAGESIZE sysconf(_SC_PAGESIZE)
47 mlock(((void *)(((size_t)(a)) & (~((PAGESIZE)-1)))),\
48 (((((size_t)(a)) + (b) - 1) | ((PAGESIZE) - 1)) + 1) - (((size_t)(a)) & (~((PAGESIZE) - 1))))
49 #define munlock(a,b) \
50 munlock(((void *)(((size_t)(a)) & (~((PAGESIZE)-1)))),\
51 (((((size_t)(a)) + (b) - 1) | ((PAGESIZE) - 1)) + 1) - (((size_t)(a)) & (~((PAGESIZE) - 1))))
57 static const unsigned int MAX_SIZE = 0x02000000;
59 static const int PROTOCOL_VERSION = 60000;
61 // Used to bypass the rule against non-const reference to temporary
62 // where it makes sense with wrappers such as CFlatData or CTxDB
64 inline T& REF(const T& val)
66 return const_cast<T&>(val);
69 /////////////////////////////////////////////////////////////////
71 // Templates for serializing to anything that looks like a stream,
72 // i.e. anything that supports .read(char*, int) and .write(char*, int)
78 SER_NETWORK = (1 << 0),
80 SER_GETHASH = (1 << 2),
83 SER_SKIPSIG = (1 << 16),
84 SER_BLOCKHEADERONLY = (1 << 17),
87 #define IMPLEMENT_SERIALIZE(statements) \
88 unsigned int GetSerializeSize(int nType=0, int nVersion=PROTOCOL_VERSION) const \
90 CSerActionGetSerializeSize ser_action; \
91 const bool fGetSize = true; \
92 const bool fWrite = false; \
93 const bool fRead = false; \
94 unsigned int nSerSize = 0; \
95 ser_streamplaceholder s; \
96 assert(fGetSize||fWrite||fRead); /* suppress warning */ \
98 s.nVersion = nVersion; \
102 template<typename Stream> \
103 void Serialize(Stream& s, int nType=0, int nVersion=PROTOCOL_VERSION) const \
105 CSerActionSerialize ser_action; \
106 const bool fGetSize = false; \
107 const bool fWrite = true; \
108 const bool fRead = false; \
109 unsigned int nSerSize = 0; \
110 assert(fGetSize||fWrite||fRead); /* suppress warning */ \
113 template<typename Stream> \
114 void Unserialize(Stream& s, int nType=0, int nVersion=PROTOCOL_VERSION) \
116 CSerActionUnserialize ser_action; \
117 const bool fGetSize = false; \
118 const bool fWrite = false; \
119 const bool fRead = true; \
120 unsigned int nSerSize = 0; \
121 assert(fGetSize||fWrite||fRead); /* suppress warning */ \
125 #define READWRITE(obj) (nSerSize += ::SerReadWrite(s, (obj), nType, nVersion, ser_action))
135 #define WRITEDATA(s, obj) s.write((char*)&(obj), sizeof(obj))
136 #define READDATA(s, obj) s.read((char*)&(obj), sizeof(obj))
138 inline unsigned int GetSerializeSize(char a, int, int=0) { return sizeof(a); }
139 inline unsigned int GetSerializeSize(signed char a, int, int=0) { return sizeof(a); }
140 inline unsigned int GetSerializeSize(unsigned char a, int, int=0) { return sizeof(a); }
141 inline unsigned int GetSerializeSize(signed short a, int, int=0) { return sizeof(a); }
142 inline unsigned int GetSerializeSize(unsigned short a, int, int=0) { return sizeof(a); }
143 inline unsigned int GetSerializeSize(signed int a, int, int=0) { return sizeof(a); }
144 inline unsigned int GetSerializeSize(unsigned int a, int, int=0) { return sizeof(a); }
145 inline unsigned int GetSerializeSize(signed long a, int, int=0) { return sizeof(a); }
146 inline unsigned int GetSerializeSize(unsigned long a, int, int=0) { return sizeof(a); }
147 inline unsigned int GetSerializeSize(int64 a, int, int=0) { return sizeof(a); }
148 inline unsigned int GetSerializeSize(uint64 a, int, int=0) { return sizeof(a); }
149 inline unsigned int GetSerializeSize(float a, int, int=0) { return sizeof(a); }
150 inline unsigned int GetSerializeSize(double a, int, int=0) { return sizeof(a); }
152 template<typename Stream> inline void Serialize(Stream& s, char a, int, int=0) { WRITEDATA(s, a); }
153 template<typename Stream> inline void Serialize(Stream& s, signed char a, int, int=0) { WRITEDATA(s, a); }
154 template<typename Stream> inline void Serialize(Stream& s, unsigned char a, int, int=0) { WRITEDATA(s, a); }
155 template<typename Stream> inline void Serialize(Stream& s, signed short a, int, int=0) { WRITEDATA(s, a); }
156 template<typename Stream> inline void Serialize(Stream& s, unsigned short a, int, int=0) { WRITEDATA(s, a); }
157 template<typename Stream> inline void Serialize(Stream& s, signed int a, int, int=0) { WRITEDATA(s, a); }
158 template<typename Stream> inline void Serialize(Stream& s, unsigned int a, int, int=0) { WRITEDATA(s, a); }
159 template<typename Stream> inline void Serialize(Stream& s, signed long a, int, int=0) { WRITEDATA(s, a); }
160 template<typename Stream> inline void Serialize(Stream& s, unsigned long a, int, int=0) { WRITEDATA(s, a); }
161 template<typename Stream> inline void Serialize(Stream& s, int64 a, int, int=0) { WRITEDATA(s, a); }
162 template<typename Stream> inline void Serialize(Stream& s, uint64 a, int, int=0) { WRITEDATA(s, a); }
163 template<typename Stream> inline void Serialize(Stream& s, float a, int, int=0) { WRITEDATA(s, a); }
164 template<typename Stream> inline void Serialize(Stream& s, double a, int, int=0) { WRITEDATA(s, a); }
166 template<typename Stream> inline void Unserialize(Stream& s, char& a, int, int=0) { READDATA(s, a); }
167 template<typename Stream> inline void Unserialize(Stream& s, signed char& a, int, int=0) { READDATA(s, a); }
168 template<typename Stream> inline void Unserialize(Stream& s, unsigned char& a, int, int=0) { READDATA(s, a); }
169 template<typename Stream> inline void Unserialize(Stream& s, signed short& a, int, int=0) { READDATA(s, a); }
170 template<typename Stream> inline void Unserialize(Stream& s, unsigned short& a, int, int=0) { READDATA(s, a); }
171 template<typename Stream> inline void Unserialize(Stream& s, signed int& a, int, int=0) { READDATA(s, a); }
172 template<typename Stream> inline void Unserialize(Stream& s, unsigned int& a, int, int=0) { READDATA(s, a); }
173 template<typename Stream> inline void Unserialize(Stream& s, signed long& a, int, int=0) { READDATA(s, a); }
174 template<typename Stream> inline void Unserialize(Stream& s, unsigned long& a, int, int=0) { READDATA(s, a); }
175 template<typename Stream> inline void Unserialize(Stream& s, int64& a, int, int=0) { READDATA(s, a); }
176 template<typename Stream> inline void Unserialize(Stream& s, uint64& a, int, int=0) { READDATA(s, a); }
177 template<typename Stream> inline void Unserialize(Stream& s, float& a, int, int=0) { READDATA(s, a); }
178 template<typename Stream> inline void Unserialize(Stream& s, double& a, int, int=0) { READDATA(s, a); }
180 inline unsigned int GetSerializeSize(bool a, int, int=0) { return sizeof(char); }
181 template<typename Stream> inline void Serialize(Stream& s, bool a, int, int=0) { char f=a; WRITEDATA(s, f); }
182 template<typename Stream> inline void Unserialize(Stream& s, bool& a, int, int=0) { char f; READDATA(s, f); a=f; }
191 // size < 253 -- 1 byte
192 // size <= USHRT_MAX -- 3 bytes (253 + 2 bytes)
193 // size <= UINT_MAX -- 5 bytes (254 + 4 bytes)
194 // size > UINT_MAX -- 9 bytes (255 + 8 bytes)
196 inline unsigned int GetSizeOfCompactSize(uint64 nSize)
198 if (nSize < 253) return sizeof(unsigned char);
199 else if (nSize <= std::numeric_limits<unsigned short>::max()) return sizeof(unsigned char) + sizeof(unsigned short);
200 else if (nSize <= std::numeric_limits<unsigned int>::max()) return sizeof(unsigned char) + sizeof(unsigned int);
201 else return sizeof(unsigned char) + sizeof(uint64);
204 template<typename Stream>
205 void WriteCompactSize(Stream& os, uint64 nSize)
209 unsigned char chSize = nSize;
210 WRITEDATA(os, chSize);
212 else if (nSize <= std::numeric_limits<unsigned short>::max())
214 unsigned char chSize = 253;
215 unsigned short xSize = nSize;
216 WRITEDATA(os, chSize);
217 WRITEDATA(os, xSize);
219 else if (nSize <= std::numeric_limits<unsigned int>::max())
221 unsigned char chSize = 254;
222 unsigned int xSize = nSize;
223 WRITEDATA(os, chSize);
224 WRITEDATA(os, xSize);
228 unsigned char chSize = 255;
229 uint64 xSize = nSize;
230 WRITEDATA(os, chSize);
231 WRITEDATA(os, xSize);
236 template<typename Stream>
237 uint64 ReadCompactSize(Stream& is)
239 unsigned char chSize;
240 READDATA(is, chSize);
246 else if (chSize == 253)
248 unsigned short xSize;
252 else if (chSize == 254)
264 if (nSizeRet > (uint64)MAX_SIZE)
265 throw std::ios_base::failure("ReadCompactSize() : size too large");
271 #define FLATDATA(obj) REF(CFlatData((char*)&(obj), (char*)&(obj) + sizeof(obj)))
273 /** Wrapper for serializing arrays and POD.
274 * There's a clever template way to make arrays serialize normally, but MSVC6 doesn't support it.
282 CFlatData(void* pbeginIn, void* pendIn) : pbegin((char*)pbeginIn), pend((char*)pendIn) { }
283 char* begin() { return pbegin; }
284 const char* begin() const { return pbegin; }
285 char* end() { return pend; }
286 const char* end() const { return pend; }
288 unsigned int GetSerializeSize(int, int=0) const
290 return pend - pbegin;
293 template<typename Stream>
294 void Serialize(Stream& s, int, int=0) const
296 s.write(pbegin, pend - pbegin);
299 template<typename Stream>
300 void Unserialize(Stream& s, int, int=0)
302 s.read(pbegin, pend - pbegin);
308 /** string stored as a fixed length field */
309 template<std::size_t LEN>
310 class CFixedFieldString
313 const std::string* pcstr;
316 explicit CFixedFieldString(const std::string& str) : pcstr(&str), pstr(NULL) { }
317 explicit CFixedFieldString(std::string& str) : pcstr(&str), pstr(&str) { }
319 unsigned int GetSerializeSize(int, int=0) const
324 template<typename Stream>
325 void Serialize(Stream& s, int, int=0) const
328 strncpy(pszBuf, pcstr->c_str(), LEN);
329 s.write(pszBuf, LEN);
332 template<typename Stream>
333 void Unserialize(Stream& s, int, int=0)
336 throw std::ios_base::failure("CFixedFieldString::Unserialize : trying to unserialize to const string");
349 // Forward declarations
353 template<typename C> unsigned int GetSerializeSize(const std::basic_string<C>& str, int, int=0);
354 template<typename Stream, typename C> void Serialize(Stream& os, const std::basic_string<C>& str, int, int=0);
355 template<typename Stream, typename C> void Unserialize(Stream& is, std::basic_string<C>& str, int, int=0);
358 template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
359 template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
360 template<typename T, typename A> inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion=PROTOCOL_VERSION);
361 template<typename Stream, typename T, typename A> void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
362 template<typename Stream, typename T, typename A> void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
363 template<typename Stream, typename T, typename A> inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion=PROTOCOL_VERSION);
364 template<typename Stream, typename T, typename A> void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
365 template<typename Stream, typename T, typename A> void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
366 template<typename Stream, typename T, typename A> inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion=PROTOCOL_VERSION);
368 // others derived from vector
369 extern inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion=PROTOCOL_VERSION);
370 template<typename Stream> void Serialize(Stream& os, const CScript& v, int nType, int nVersion=PROTOCOL_VERSION);
371 template<typename Stream> void Unserialize(Stream& is, CScript& v, int nType, int nVersion=PROTOCOL_VERSION);
374 template<typename K, typename T> unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion=PROTOCOL_VERSION);
375 template<typename Stream, typename K, typename T> void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion=PROTOCOL_VERSION);
376 template<typename Stream, typename K, typename T> void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion=PROTOCOL_VERSION);
379 template<typename T0, typename T1, typename T2> unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2>& item, int nType, int nVersion=PROTOCOL_VERSION);
380 template<typename Stream, typename T0, typename T1, typename T2> void Serialize(Stream& os, const boost::tuple<T0, T1, T2>& item, int nType, int nVersion=PROTOCOL_VERSION);
381 template<typename Stream, typename T0, typename T1, typename T2> void Unserialize(Stream& is, boost::tuple<T0, T1, T2>& item, int nType, int nVersion=PROTOCOL_VERSION);
384 template<typename T0, typename T1, typename T2, typename T3> unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion=PROTOCOL_VERSION);
385 template<typename Stream, typename T0, typename T1, typename T2, typename T3> void Serialize(Stream& os, const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion=PROTOCOL_VERSION);
386 template<typename Stream, typename T0, typename T1, typename T2, typename T3> void Unserialize(Stream& is, boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion=PROTOCOL_VERSION);
389 template<typename K, typename T, typename Pred, typename A> unsigned int GetSerializeSize(const std::map<K, T, Pred, A>& m, int nType, int nVersion=PROTOCOL_VERSION);
390 template<typename Stream, typename K, typename T, typename Pred, typename A> void Serialize(Stream& os, const std::map<K, T, Pred, A>& m, int nType, int nVersion=PROTOCOL_VERSION);
391 template<typename Stream, typename K, typename T, typename Pred, typename A> void Unserialize(Stream& is, std::map<K, T, Pred, A>& m, int nType, int nVersion=PROTOCOL_VERSION);
394 template<typename K, typename Pred, typename A> unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion=PROTOCOL_VERSION);
395 template<typename Stream, typename K, typename Pred, typename A> void Serialize(Stream& os, const std::set<K, Pred, A>& m, int nType, int nVersion=PROTOCOL_VERSION);
396 template<typename Stream, typename K, typename Pred, typename A> void Unserialize(Stream& is, std::set<K, Pred, A>& m, int nType, int nVersion=PROTOCOL_VERSION);
403 // If none of the specialized versions above matched, default to calling member function.
404 // "int nType" is changed to "long nType" to keep from getting an ambiguous overload error.
405 // The compiler will only cast int to long if none of the other templates matched.
406 // Thanks to Boost serialization for this idea.
409 inline unsigned int GetSerializeSize(const T& a, long nType, int nVersion=PROTOCOL_VERSION)
411 return a.GetSerializeSize((int)nType, nVersion);
414 template<typename Stream, typename T>
415 inline void Serialize(Stream& os, const T& a, long nType, int nVersion=PROTOCOL_VERSION)
417 a.Serialize(os, (int)nType, nVersion);
420 template<typename Stream, typename T>
421 inline void Unserialize(Stream& is, T& a, long nType, int nVersion=PROTOCOL_VERSION)
423 a.Unserialize(is, (int)nType, nVersion);
434 unsigned int GetSerializeSize(const std::basic_string<C>& str, int, int)
436 return GetSizeOfCompactSize(str.size()) + str.size() * sizeof(str[0]);
439 template<typename Stream, typename C>
440 void Serialize(Stream& os, const std::basic_string<C>& str, int, int)
442 WriteCompactSize(os, str.size());
444 os.write((char*)&str[0], str.size() * sizeof(str[0]));
447 template<typename Stream, typename C>
448 void Unserialize(Stream& is, std::basic_string<C>& str, int, int)
450 unsigned int nSize = ReadCompactSize(is);
453 is.read((char*)&str[0], nSize * sizeof(str[0]));
461 template<typename T, typename A>
462 unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
464 return (GetSizeOfCompactSize(v.size()) + v.size() * sizeof(T));
467 template<typename T, typename A>
468 unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
470 unsigned int nSize = GetSizeOfCompactSize(v.size());
471 for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
472 nSize += GetSerializeSize((*vi), nType, nVersion);
476 template<typename T, typename A>
477 inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion)
479 return GetSerializeSize_impl(v, nType, nVersion, boost::is_fundamental<T>());
483 template<typename Stream, typename T, typename A>
484 void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
486 WriteCompactSize(os, v.size());
488 os.write((char*)&v[0], v.size() * sizeof(T));
491 template<typename Stream, typename T, typename A>
492 void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
494 WriteCompactSize(os, v.size());
495 for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
496 ::Serialize(os, (*vi), nType, nVersion);
499 template<typename Stream, typename T, typename A>
500 inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion)
502 Serialize_impl(os, v, nType, nVersion, boost::is_fundamental<T>());
506 template<typename Stream, typename T, typename A>
507 void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
509 //unsigned int nSize = ReadCompactSize(is);
511 //is.read((char*)&v[0], nSize * sizeof(T));
513 // Limit size per read so bogus size value won't cause out of memory
515 unsigned int nSize = ReadCompactSize(is);
519 unsigned int blk = std::min(nSize - i, (unsigned int)(1 + 4999999 / sizeof(T)));
521 is.read((char*)&v[i], blk * sizeof(T));
526 template<typename Stream, typename T, typename A>
527 void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
529 //unsigned int nSize = ReadCompactSize(is);
531 //for (std::vector<T, A>::iterator vi = v.begin(); vi != v.end(); ++vi)
532 // Unserialize(is, (*vi), nType, nVersion);
535 unsigned int nSize = ReadCompactSize(is);
537 unsigned int nMid = 0;
540 nMid += 5000000 / sizeof(T);
544 for (; i < nMid; i++)
545 Unserialize(is, v[i], nType, nVersion);
549 template<typename Stream, typename T, typename A>
550 inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion)
552 Unserialize_impl(is, v, nType, nVersion, boost::is_fundamental<T>());
558 // others derived from vector
560 inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion)
562 return GetSerializeSize((const std::vector<unsigned char>&)v, nType, nVersion);
565 template<typename Stream>
566 void Serialize(Stream& os, const CScript& v, int nType, int nVersion)
568 Serialize(os, (const std::vector<unsigned char>&)v, nType, nVersion);
571 template<typename Stream>
572 void Unserialize(Stream& is, CScript& v, int nType, int nVersion)
574 Unserialize(is, (std::vector<unsigned char>&)v, nType, nVersion);
582 template<typename K, typename T>
583 unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion)
585 return GetSerializeSize(item.first, nType, nVersion) + GetSerializeSize(item.second, nType, nVersion);
588 template<typename Stream, typename K, typename T>
589 void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion)
591 Serialize(os, item.first, nType, nVersion);
592 Serialize(os, item.second, nType, nVersion);
595 template<typename Stream, typename K, typename T>
596 void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion)
598 Unserialize(is, item.first, nType, nVersion);
599 Unserialize(is, item.second, nType, nVersion);
607 template<typename T0, typename T1, typename T2>
608 unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
610 unsigned int nSize = 0;
611 nSize += GetSerializeSize(boost::get<0>(item), nType, nVersion);
612 nSize += GetSerializeSize(boost::get<1>(item), nType, nVersion);
613 nSize += GetSerializeSize(boost::get<2>(item), nType, nVersion);
617 template<typename Stream, typename T0, typename T1, typename T2>
618 void Serialize(Stream& os, const boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
620 Serialize(os, boost::get<0>(item), nType, nVersion);
621 Serialize(os, boost::get<1>(item), nType, nVersion);
622 Serialize(os, boost::get<2>(item), nType, nVersion);
625 template<typename Stream, typename T0, typename T1, typename T2>
626 void Unserialize(Stream& is, boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
628 Unserialize(is, boost::get<0>(item), nType, nVersion);
629 Unserialize(is, boost::get<1>(item), nType, nVersion);
630 Unserialize(is, boost::get<2>(item), nType, nVersion);
638 template<typename T0, typename T1, typename T2, typename T3>
639 unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
641 unsigned int nSize = 0;
642 nSize += GetSerializeSize(boost::get<0>(item), nType, nVersion);
643 nSize += GetSerializeSize(boost::get<1>(item), nType, nVersion);
644 nSize += GetSerializeSize(boost::get<2>(item), nType, nVersion);
645 nSize += GetSerializeSize(boost::get<3>(item), nType, nVersion);
649 template<typename Stream, typename T0, typename T1, typename T2, typename T3>
650 void Serialize(Stream& os, const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
652 Serialize(os, boost::get<0>(item), nType, nVersion);
653 Serialize(os, boost::get<1>(item), nType, nVersion);
654 Serialize(os, boost::get<2>(item), nType, nVersion);
655 Serialize(os, boost::get<3>(item), nType, nVersion);
658 template<typename Stream, typename T0, typename T1, typename T2, typename T3>
659 void Unserialize(Stream& is, boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
661 Unserialize(is, boost::get<0>(item), nType, nVersion);
662 Unserialize(is, boost::get<1>(item), nType, nVersion);
663 Unserialize(is, boost::get<2>(item), nType, nVersion);
664 Unserialize(is, boost::get<3>(item), nType, nVersion);
672 template<typename K, typename T, typename Pred, typename A>
673 unsigned int GetSerializeSize(const std::map<K, T, Pred, A>& m, int nType, int nVersion)
675 unsigned int nSize = GetSizeOfCompactSize(m.size());
676 for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
677 nSize += GetSerializeSize((*mi), nType, nVersion);
681 template<typename Stream, typename K, typename T, typename Pred, typename A>
682 void Serialize(Stream& os, const std::map<K, T, Pred, A>& m, int nType, int nVersion)
684 WriteCompactSize(os, m.size());
685 for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
686 Serialize(os, (*mi), nType, nVersion);
689 template<typename Stream, typename K, typename T, typename Pred, typename A>
690 void Unserialize(Stream& is, std::map<K, T, Pred, A>& m, int nType, int nVersion)
693 unsigned int nSize = ReadCompactSize(is);
694 typename std::map<K, T, Pred, A>::iterator mi = m.begin();
695 for (unsigned int i = 0; i < nSize; i++)
697 std::pair<K, T> item;
698 Unserialize(is, item, nType, nVersion);
699 mi = m.insert(mi, item);
708 template<typename K, typename Pred, typename A>
709 unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion)
711 unsigned int nSize = GetSizeOfCompactSize(m.size());
712 for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
713 nSize += GetSerializeSize((*it), nType, nVersion);
717 template<typename Stream, typename K, typename Pred, typename A>
718 void Serialize(Stream& os, const std::set<K, Pred, A>& m, int nType, int nVersion)
720 WriteCompactSize(os, m.size());
721 for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
722 Serialize(os, (*it), nType, nVersion);
725 template<typename Stream, typename K, typename Pred, typename A>
726 void Unserialize(Stream& is, std::set<K, Pred, A>& m, int nType, int nVersion)
729 unsigned int nSize = ReadCompactSize(is);
730 typename std::set<K, Pred, A>::iterator it = m.begin();
731 for (unsigned int i = 0; i < nSize; i++)
734 Unserialize(is, key, nType, nVersion);
735 it = m.insert(it, key);
742 // Support for IMPLEMENT_SERIALIZE and READWRITE macro
744 class CSerActionGetSerializeSize { };
745 class CSerActionSerialize { };
746 class CSerActionUnserialize { };
748 template<typename Stream, typename T>
749 inline unsigned int SerReadWrite(Stream& s, const T& obj, int nType, int nVersion, CSerActionGetSerializeSize ser_action)
751 return ::GetSerializeSize(obj, nType, nVersion);
754 template<typename Stream, typename T>
755 inline unsigned int SerReadWrite(Stream& s, const T& obj, int nType, int nVersion, CSerActionSerialize ser_action)
757 ::Serialize(s, obj, nType, nVersion);
761 template<typename Stream, typename T>
762 inline unsigned int SerReadWrite(Stream& s, T& obj, int nType, int nVersion, CSerActionUnserialize ser_action)
764 ::Unserialize(s, obj, nType, nVersion);
768 struct ser_streamplaceholder
783 // Allocator that locks its contents from being paged
784 // out of memory and clears its contents before deletion.
787 struct secure_allocator : public std::allocator<T>
789 // MSVC8 default copy constructor is broken
790 typedef std::allocator<T> base;
791 typedef typename base::size_type size_type;
792 typedef typename base::difference_type difference_type;
793 typedef typename base::pointer pointer;
794 typedef typename base::const_pointer const_pointer;
795 typedef typename base::reference reference;
796 typedef typename base::const_reference const_reference;
797 typedef typename base::value_type value_type;
798 secure_allocator() throw() {}
799 secure_allocator(const secure_allocator& a) throw() : base(a) {}
800 template <typename U>
801 secure_allocator(const secure_allocator<U>& a) throw() : base(a) {}
802 ~secure_allocator() throw() {}
803 template<typename _Other> struct rebind
804 { typedef secure_allocator<_Other> other; };
806 T* allocate(std::size_t n, const void *hint = 0)
809 p = std::allocator<T>::allocate(n, hint);
811 mlock(p, sizeof(T) * n);
815 void deallocate(T* p, std::size_t n)
819 memset(p, 0, sizeof(T) * n);
820 munlock(p, sizeof(T) * n);
822 std::allocator<T>::deallocate(p, n);
828 // Allocator that clears its contents before deletion.
831 struct zero_after_free_allocator : public std::allocator<T>
833 // MSVC8 default copy constructor is broken
834 typedef std::allocator<T> base;
835 typedef typename base::size_type size_type;
836 typedef typename base::difference_type difference_type;
837 typedef typename base::pointer pointer;
838 typedef typename base::const_pointer const_pointer;
839 typedef typename base::reference reference;
840 typedef typename base::const_reference const_reference;
841 typedef typename base::value_type value_type;
842 zero_after_free_allocator() throw() {}
843 zero_after_free_allocator(const zero_after_free_allocator& a) throw() : base(a) {}
844 template <typename U>
845 zero_after_free_allocator(const zero_after_free_allocator<U>& a) throw() : base(a) {}
846 ~zero_after_free_allocator() throw() {}
847 template<typename _Other> struct rebind
848 { typedef zero_after_free_allocator<_Other> other; };
850 void deallocate(T* p, std::size_t n)
853 memset(p, 0, sizeof(T) * n);
854 std::allocator<T>::deallocate(p, n);
860 /** Double ended buffer combining vector and stream-like interfaces.
862 * >> and << read and write unformatted data using the above serialization templates.
863 * Fills with data in linear time; some stringstream implementations take N^2 time.
868 typedef std::vector<char, zero_after_free_allocator<char> > vector_type;
870 unsigned int nReadPos;
877 typedef vector_type::allocator_type allocator_type;
878 typedef vector_type::size_type size_type;
879 typedef vector_type::difference_type difference_type;
880 typedef vector_type::reference reference;
881 typedef vector_type::const_reference const_reference;
882 typedef vector_type::value_type value_type;
883 typedef vector_type::iterator iterator;
884 typedef vector_type::const_iterator const_iterator;
885 typedef vector_type::reverse_iterator reverse_iterator;
887 explicit CDataStream(int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION)
889 Init(nTypeIn, nVersionIn);
892 CDataStream(const_iterator pbegin, const_iterator pend, int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION) : vch(pbegin, pend)
894 Init(nTypeIn, nVersionIn);
897 #if !defined(_MSC_VER) || _MSC_VER >= 1300
898 CDataStream(const char* pbegin, const char* pend, int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION) : vch(pbegin, pend)
900 Init(nTypeIn, nVersionIn);
904 CDataStream(const vector_type& vchIn, int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION) : vch(vchIn.begin(), vchIn.end())
906 Init(nTypeIn, nVersionIn);
909 CDataStream(const std::vector<char>& vchIn, int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION) : vch(vchIn.begin(), vchIn.end())
911 Init(nTypeIn, nVersionIn);
914 CDataStream(const std::vector<unsigned char>& vchIn, int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION) : vch((char*)&vchIn.begin()[0], (char*)&vchIn.end()[0])
916 Init(nTypeIn, nVersionIn);
919 void Init(int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION)
923 nVersion = nVersionIn;
925 exceptmask = std::ios::badbit | std::ios::failbit;
928 CDataStream& operator+=(const CDataStream& b)
930 vch.insert(vch.end(), b.begin(), b.end());
934 friend CDataStream operator+(const CDataStream& a, const CDataStream& b)
941 std::string str() const
943 return (std::string(begin(), end()));
950 const_iterator begin() const { return vch.begin() + nReadPos; }
951 iterator begin() { return vch.begin() + nReadPos; }
952 const_iterator end() const { return vch.end(); }
953 iterator end() { return vch.end(); }
954 size_type size() const { return vch.size() - nReadPos; }
955 bool empty() const { return vch.size() == nReadPos; }
956 void resize(size_type n, value_type c=0) { vch.resize(n + nReadPos, c); }
957 void reserve(size_type n) { vch.reserve(n + nReadPos); }
958 const_reference operator[](size_type pos) const { return vch[pos + nReadPos]; }
959 reference operator[](size_type pos) { return vch[pos + nReadPos]; }
960 void clear() { vch.clear(); nReadPos = 0; }
961 iterator insert(iterator it, const char& x=char()) { return vch.insert(it, x); }
962 void insert(iterator it, size_type n, const char& x) { vch.insert(it, n, x); }
964 void insert(iterator it, const_iterator first, const_iterator last)
966 if (it == vch.begin() + nReadPos && last - first <= nReadPos)
968 // special case for inserting at the front when there's room
969 nReadPos -= (last - first);
970 memcpy(&vch[nReadPos], &first[0], last - first);
973 vch.insert(it, first, last);
976 void insert(iterator it, std::vector<char>::const_iterator first, std::vector<char>::const_iterator last)
978 if (it == vch.begin() + nReadPos && last - first <= nReadPos)
980 // special case for inserting at the front when there's room
981 nReadPos -= (last - first);
982 memcpy(&vch[nReadPos], &first[0], last - first);
985 vch.insert(it, first, last);
988 #if !defined(_MSC_VER) || _MSC_VER >= 1300
989 void insert(iterator it, const char* first, const char* last)
991 if (it == vch.begin() + nReadPos && last - first <= nReadPos)
993 // special case for inserting at the front when there's room
994 nReadPos -= (last - first);
995 memcpy(&vch[nReadPos], &first[0], last - first);
998 vch.insert(it, first, last);
1002 iterator erase(iterator it)
1004 if (it == vch.begin() + nReadPos)
1006 // special case for erasing from the front
1007 if (++nReadPos >= vch.size())
1009 // whenever we reach the end, we take the opportunity to clear the buffer
1011 return vch.erase(vch.begin(), vch.end());
1013 return vch.begin() + nReadPos;
1016 return vch.erase(it);
1019 iterator erase(iterator first, iterator last)
1021 if (first == vch.begin() + nReadPos)
1023 // special case for erasing from the front
1024 if (last == vch.end())
1027 return vch.erase(vch.begin(), vch.end());
1031 nReadPos = (last - vch.begin());
1036 return vch.erase(first, last);
1039 inline void Compact()
1041 vch.erase(vch.begin(), vch.begin() + nReadPos);
1045 bool Rewind(size_type n)
1047 // Rewind by n characters if the buffer hasn't been compacted yet
1058 void setstate(short bits, const char* psz)
1061 if (state & exceptmask)
1062 throw std::ios_base::failure(psz);
1065 bool eof() const { return size() == 0; }
1066 bool fail() const { return state & (std::ios::badbit | std::ios::failbit); }
1067 bool good() const { return !eof() && (state == 0); }
1068 void clear(short n) { state = n; } // name conflict with vector clear()
1069 short exceptions() { return exceptmask; }
1070 short exceptions(short mask) { short prev = exceptmask; exceptmask = mask; setstate(0, "CDataStream"); return prev; }
1071 CDataStream* rdbuf() { return this; }
1072 int in_avail() { return size(); }
1074 void SetType(int n) { nType = n; }
1075 int GetType() { return nType; }
1076 void SetVersion(int n) { nVersion = n; }
1077 int GetVersion() { return nVersion; }
1078 void ReadVersion() { *this >> nVersion; }
1079 void WriteVersion() { *this << nVersion; }
1081 CDataStream& read(char* pch, int nSize)
1083 // Read from the beginning of the buffer
1085 unsigned int nReadPosNext = nReadPos + nSize;
1086 if (nReadPosNext >= vch.size())
1088 if (nReadPosNext > vch.size())
1090 setstate(std::ios::failbit, "CDataStream::read() : end of data");
1091 memset(pch, 0, nSize);
1092 nSize = vch.size() - nReadPos;
1094 memcpy(pch, &vch[nReadPos], nSize);
1099 memcpy(pch, &vch[nReadPos], nSize);
1100 nReadPos = nReadPosNext;
1104 CDataStream& ignore(int nSize)
1106 // Ignore from the beginning of the buffer
1108 unsigned int nReadPosNext = nReadPos + nSize;
1109 if (nReadPosNext >= vch.size())
1111 if (nReadPosNext > vch.size())
1113 setstate(std::ios::failbit, "CDataStream::ignore() : end of data");
1114 nSize = vch.size() - nReadPos;
1120 nReadPos = nReadPosNext;
1124 CDataStream& write(const char* pch, int nSize)
1126 // Write to the end of the buffer
1128 vch.insert(vch.end(), pch, pch + nSize);
1132 template<typename Stream>
1133 void Serialize(Stream& s, int nType=0, int nVersion=PROTOCOL_VERSION) const
1135 // Special case: stream << stream concatenates like stream += stream
1137 s.write((char*)&vch[0], vch.size() * sizeof(vch[0]));
1140 template<typename T>
1141 unsigned int GetSerializeSize(const T& obj)
1143 // Tells the size of the object if serialized to this stream
1144 return ::GetSerializeSize(obj, nType, nVersion);
1147 template<typename T>
1148 CDataStream& operator<<(const T& obj)
1150 // Serialize to this stream
1151 ::Serialize(*this, obj, nType, nVersion);
1155 template<typename T>
1156 CDataStream& operator>>(T& obj)
1158 // Unserialize from this stream
1159 ::Unserialize(*this, obj, nType, nVersion);
1164 #ifdef TESTCDATASTREAM
1171 // n=16000 0 seconds
1172 // n=32000 0 seconds
1173 // n=64000 1 seconds
1174 // n=128000 1 seconds
1175 // n=256000 2 seconds
1176 // n=512000 4 seconds
1177 // n=1024000 8 seconds
1178 // n=2048000 16 seconds
1179 // n=4096000 32 seconds
1183 // n=4000 13 seconds
1184 // n=8000 87 seconds
1185 // n=16000 400 seconds
1186 // n=32000 1660 seconds
1187 // n=64000 6749 seconds
1188 // n=128000 27241 seconds
1189 // n=256000 109804 seconds
1191 int main(int argc, char *argv[])
1193 vector<unsigned char> vch(0xcc, 250);
1194 printf("CDataStream:\n");
1195 for (int n = 1000; n <= 4500000; n *= 2)
1198 time_t nStart = time(NULL);
1199 for (int i = 0; i < n; i++)
1200 ss.write((char*)&vch[0], vch.size());
1201 printf("n=%-10d %d seconds\n", n, time(NULL) - nStart);
1203 printf("stringstream:\n");
1204 for (int n = 1000; n <= 4500000; n *= 2)
1207 time_t nStart = time(NULL);
1208 for (int i = 0; i < n; i++)
1209 ss.write((char*)&vch[0], vch.size());
1210 printf("n=%-10d %d seconds\n", n, time(NULL) - nStart);
1224 /** RAII wrapper for FILE*.
1226 * Will automatically close the file when it goes out of scope if not null.
1227 * If you're returning the file pointer, return file.release().
1228 * If you need to close the file early, use file.fclose() instead of fclose(file).
1240 typedef FILE element_type;
1242 CAutoFile(FILE* filenew=NULL, int nTypeIn=SER_DISK, int nVersionIn=PROTOCOL_VERSION)
1246 nVersion = nVersionIn;
1248 exceptmask = std::ios::badbit | std::ios::failbit;
1258 if (file != NULL && file != stdin && file != stdout && file != stderr)
1263 FILE* release() { FILE* ret = file; file = NULL; return ret; }
1264 operator FILE*() { return file; }
1265 FILE* operator->() { return file; }
1266 FILE& operator*() { return *file; }
1267 FILE** operator&() { return &file; }
1268 FILE* operator=(FILE* pnew) { return file = pnew; }
1269 bool operator!() { return (file == NULL); }
1275 void setstate(short bits, const char* psz)
1278 if (state & exceptmask)
1279 throw std::ios_base::failure(psz);
1282 bool fail() const { return state & (std::ios::badbit | std::ios::failbit); }
1283 bool good() const { return state == 0; }
1284 void clear(short n = 0) { state = n; }
1285 short exceptions() { return exceptmask; }
1286 short exceptions(short mask) { short prev = exceptmask; exceptmask = mask; setstate(0, "CAutoFile"); return prev; }
1288 void SetType(int n) { nType = n; }
1289 int GetType() { return nType; }
1290 void SetVersion(int n) { nVersion = n; }
1291 int GetVersion() { return nVersion; }
1292 void ReadVersion() { *this >> nVersion; }
1293 void WriteVersion() { *this << nVersion; }
1295 CAutoFile& read(char* pch, int nSize)
1298 throw std::ios_base::failure("CAutoFile::read : file handle is NULL");
1299 if (fread(pch, 1, nSize, file) != nSize)
1300 setstate(std::ios::failbit, feof(file) ? "CAutoFile::read : end of file" : "CAutoFile::read : fread failed");
1304 CAutoFile& write(const char* pch, int nSize)
1307 throw std::ios_base::failure("CAutoFile::write : file handle is NULL");
1308 if (fwrite(pch, 1, nSize, file) != nSize)
1309 setstate(std::ios::failbit, "CAutoFile::write : write failed");
1313 template<typename T>
1314 unsigned int GetSerializeSize(const T& obj)
1316 // Tells the size of the object if serialized to this stream
1317 return ::GetSerializeSize(obj, nType, nVersion);
1320 template<typename T>
1321 CAutoFile& operator<<(const T& obj)
1323 // Serialize to this stream
1325 throw std::ios_base::failure("CAutoFile::operator<< : file handle is NULL");
1326 ::Serialize(*this, obj, nType, nVersion);
1330 template<typename T>
1331 CAutoFile& operator>>(T& obj)
1333 // Unserialize from this stream
1335 throw std::ios_base::failure("CAutoFile::operator>> : file handle is NULL");
1336 ::Unserialize(*this, obj, nType, nVersion);