1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2011 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 #if defined(_MSC_VER) || defined(__BORLANDC__)
23 typedef __int64 int64;
24 typedef unsigned __int64 uint64;
26 typedef long long int64;
27 typedef unsigned long long uint64;
29 #if defined(_MSC_VER) && _MSC_VER < 1300
30 #define for if (false) ; else for
35 // This is used to attempt to keep keying material out of swap
36 // Note that VirtualLock does not provide this as a guarantee on Windows,
37 // but, in practice, memory that has been VirtualLock'd almost never gets written to
38 // the pagefile except in rare circumstances where memory is extremely low.
40 #define mlock(p, n) VirtualLock((p), (n));
41 #define munlock(p, n) VirtualUnlock((p), (n));
45 /* This comes from limits.h if it's not defined there set a sane default */
48 #define PAGESIZE sysconf(_SC_PAGESIZE)
51 mlock(((void *)(((size_t)(a)) & (~((PAGESIZE)-1)))),\
52 (((((size_t)(a)) + (b) - 1) | ((PAGESIZE) - 1)) + 1) - (((size_t)(a)) & (~((PAGESIZE) - 1))))
53 #define munlock(a,b) \
54 munlock(((void *)(((size_t)(a)) & (~((PAGESIZE)-1)))),\
55 (((((size_t)(a)) + (b) - 1) | ((PAGESIZE) - 1)) + 1) - (((size_t)(a)) & (~((PAGESIZE) - 1))))
61 static const unsigned int MAX_SIZE = 0x02000000;
63 static const int PROTOCOL_VERSION = 60000;
65 // Used to bypass the rule against non-const reference to temporary
66 // where it makes sense with wrappers such as CFlatData or CTxDB
68 inline T& REF(const T& val)
70 return const_cast<T&>(val);
73 /////////////////////////////////////////////////////////////////
75 // Templates for serializing to anything that looks like a stream,
76 // i.e. anything that supports .read(char*, int) and .write(char*, int)
82 SER_NETWORK = (1 << 0),
84 SER_GETHASH = (1 << 2),
87 SER_SKIPSIG = (1 << 16),
88 SER_BLOCKHEADERONLY = (1 << 17),
91 #define IMPLEMENT_SERIALIZE(statements) \
92 unsigned int GetSerializeSize(int nType=0, int nVersion=PROTOCOL_VERSION) const \
94 CSerActionGetSerializeSize ser_action; \
95 const bool fGetSize = true; \
96 const bool fWrite = false; \
97 const bool fRead = false; \
98 unsigned int nSerSize = 0; \
99 ser_streamplaceholder s; \
101 s.nVersion = nVersion; \
105 template<typename Stream> \
106 void Serialize(Stream& s, int nType=0, int nVersion=PROTOCOL_VERSION) const \
108 CSerActionSerialize ser_action; \
109 const bool fGetSize = false; \
110 const bool fWrite = true; \
111 const bool fRead = false; \
112 unsigned int nSerSize = 0; \
115 template<typename Stream> \
116 void Unserialize(Stream& s, int nType=0, int nVersion=PROTOCOL_VERSION) \
118 CSerActionUnserialize ser_action; \
119 const bool fGetSize = false; \
120 const bool fWrite = false; \
121 const bool fRead = true; \
122 unsigned int nSerSize = 0; \
126 #define READWRITE(obj) (nSerSize += ::SerReadWrite(s, (obj), nType, nVersion, ser_action))
136 #define WRITEDATA(s, obj) s.write((char*)&(obj), sizeof(obj))
137 #define READDATA(s, obj) s.read((char*)&(obj), sizeof(obj))
139 inline unsigned int GetSerializeSize(char a, int, int=0) { return sizeof(a); }
140 inline unsigned int GetSerializeSize(signed char a, int, int=0) { return sizeof(a); }
141 inline unsigned int GetSerializeSize(unsigned char a, int, int=0) { return sizeof(a); }
142 inline unsigned int GetSerializeSize(signed short a, int, int=0) { return sizeof(a); }
143 inline unsigned int GetSerializeSize(unsigned short a, int, int=0) { return sizeof(a); }
144 inline unsigned int GetSerializeSize(signed int a, int, int=0) { return sizeof(a); }
145 inline unsigned int GetSerializeSize(unsigned int a, int, int=0) { return sizeof(a); }
146 inline unsigned int GetSerializeSize(signed long a, int, int=0) { return sizeof(a); }
147 inline unsigned int GetSerializeSize(unsigned long a, int, int=0) { return sizeof(a); }
148 inline unsigned int GetSerializeSize(int64 a, int, int=0) { return sizeof(a); }
149 inline unsigned int GetSerializeSize(uint64 a, int, int=0) { return sizeof(a); }
150 inline unsigned int GetSerializeSize(float a, int, int=0) { return sizeof(a); }
151 inline unsigned int GetSerializeSize(double a, int, int=0) { return sizeof(a); }
153 template<typename Stream> inline void Serialize(Stream& s, char a, int, int=0) { WRITEDATA(s, a); }
154 template<typename Stream> inline void Serialize(Stream& s, signed char a, int, int=0) { WRITEDATA(s, a); }
155 template<typename Stream> inline void Serialize(Stream& s, unsigned char a, int, int=0) { WRITEDATA(s, a); }
156 template<typename Stream> inline void Serialize(Stream& s, signed short a, int, int=0) { WRITEDATA(s, a); }
157 template<typename Stream> inline void Serialize(Stream& s, unsigned short a, int, int=0) { WRITEDATA(s, a); }
158 template<typename Stream> inline void Serialize(Stream& s, signed int a, int, int=0) { WRITEDATA(s, a); }
159 template<typename Stream> inline void Serialize(Stream& s, unsigned int a, int, int=0) { WRITEDATA(s, a); }
160 template<typename Stream> inline void Serialize(Stream& s, signed long a, int, int=0) { WRITEDATA(s, a); }
161 template<typename Stream> inline void Serialize(Stream& s, unsigned long a, int, int=0) { WRITEDATA(s, a); }
162 template<typename Stream> inline void Serialize(Stream& s, int64 a, int, int=0) { WRITEDATA(s, a); }
163 template<typename Stream> inline void Serialize(Stream& s, uint64 a, int, int=0) { WRITEDATA(s, a); }
164 template<typename Stream> inline void Serialize(Stream& s, float a, int, int=0) { WRITEDATA(s, a); }
165 template<typename Stream> inline void Serialize(Stream& s, double a, int, int=0) { WRITEDATA(s, a); }
167 template<typename Stream> inline void Unserialize(Stream& s, char& a, int, int=0) { READDATA(s, a); }
168 template<typename Stream> inline void Unserialize(Stream& s, signed char& a, int, int=0) { READDATA(s, a); }
169 template<typename Stream> inline void Unserialize(Stream& s, unsigned char& a, int, int=0) { READDATA(s, a); }
170 template<typename Stream> inline void Unserialize(Stream& s, signed short& a, int, int=0) { READDATA(s, a); }
171 template<typename Stream> inline void Unserialize(Stream& s, unsigned short& a, int, int=0) { READDATA(s, a); }
172 template<typename Stream> inline void Unserialize(Stream& s, signed int& a, int, int=0) { READDATA(s, a); }
173 template<typename Stream> inline void Unserialize(Stream& s, unsigned int& a, int, int=0) { READDATA(s, a); }
174 template<typename Stream> inline void Unserialize(Stream& s, signed long& a, int, int=0) { READDATA(s, a); }
175 template<typename Stream> inline void Unserialize(Stream& s, unsigned long& a, int, int=0) { READDATA(s, a); }
176 template<typename Stream> inline void Unserialize(Stream& s, int64& a, int, int=0) { READDATA(s, a); }
177 template<typename Stream> inline void Unserialize(Stream& s, uint64& a, int, int=0) { READDATA(s, a); }
178 template<typename Stream> inline void Unserialize(Stream& s, float& a, int, int=0) { READDATA(s, a); }
179 template<typename Stream> inline void Unserialize(Stream& s, double& a, int, int=0) { READDATA(s, a); }
181 inline unsigned int GetSerializeSize(bool a, int, int=0) { return sizeof(char); }
182 template<typename Stream> inline void Serialize(Stream& s, bool a, int, int=0) { char f=a; WRITEDATA(s, f); }
183 template<typename Stream> inline void Unserialize(Stream& s, bool& a, int, int=0) { char f; READDATA(s, f); a=f; }
192 // size < 253 -- 1 byte
193 // size <= USHRT_MAX -- 3 bytes (253 + 2 bytes)
194 // size <= UINT_MAX -- 5 bytes (254 + 4 bytes)
195 // size > UINT_MAX -- 9 bytes (255 + 8 bytes)
197 inline unsigned int GetSizeOfCompactSize(uint64 nSize)
199 if (nSize < 253) return sizeof(unsigned char);
200 else if (nSize <= USHRT_MAX) return sizeof(unsigned char) + sizeof(unsigned short);
201 else if (nSize <= UINT_MAX) return sizeof(unsigned char) + sizeof(unsigned int);
202 else return sizeof(unsigned char) + sizeof(uint64);
205 template<typename Stream>
206 void WriteCompactSize(Stream& os, uint64 nSize)
210 unsigned char chSize = nSize;
211 WRITEDATA(os, chSize);
213 else if (nSize <= USHRT_MAX)
215 unsigned char chSize = 253;
216 unsigned short xSize = nSize;
217 WRITEDATA(os, chSize);
218 WRITEDATA(os, xSize);
220 else if (nSize <= UINT_MAX)
222 unsigned char chSize = 254;
223 unsigned int xSize = nSize;
224 WRITEDATA(os, chSize);
225 WRITEDATA(os, xSize);
229 unsigned char chSize = 255;
230 uint64 xSize = nSize;
231 WRITEDATA(os, chSize);
232 WRITEDATA(os, xSize);
237 template<typename Stream>
238 uint64 ReadCompactSize(Stream& is)
240 unsigned char chSize;
241 READDATA(is, chSize);
247 else if (chSize == 253)
249 unsigned short xSize;
253 else if (chSize == 254)
265 if (nSizeRet > (uint64)MAX_SIZE)
266 throw std::ios_base::failure("ReadCompactSize() : size too large");
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
276 #define FLATDATA(obj) REF(CFlatData((char*)&(obj), (char*)&(obj) + sizeof(obj)))
283 CFlatData(void* pbeginIn, void* pendIn) : pbegin((char*)pbeginIn), pend((char*)pendIn) { }
284 char* begin() { return pbegin; }
285 const char* begin() const { return pbegin; }
286 char* end() { return pend; }
287 const char* end() const { return pend; }
289 unsigned int GetSerializeSize(int, int=0) const
291 return pend - pbegin;
294 template<typename Stream>
295 void Serialize(Stream& s, int, int=0) const
297 s.write(pbegin, pend - pbegin);
300 template<typename Stream>
301 void Unserialize(Stream& s, int, int=0)
303 s.read(pbegin, pend - pbegin);
310 // string stored as a fixed length field
312 template<std::size_t LEN>
313 class CFixedFieldString
316 const std::string* pcstr;
319 explicit CFixedFieldString(const std::string& str) : pcstr(&str), pstr(NULL) { }
320 explicit CFixedFieldString(std::string& str) : pcstr(&str), pstr(&str) { }
322 unsigned int GetSerializeSize(int, int=0) const
327 template<typename Stream>
328 void Serialize(Stream& s, int, int=0) const
331 strncpy(pszBuf, pcstr->c_str(), LEN);
332 s.write(pszBuf, LEN);
335 template<typename Stream>
336 void Unserialize(Stream& s, int, int=0)
339 throw std::ios_base::failure("CFixedFieldString::Unserialize : trying to unserialize to const string");
352 // Forward declarations
356 template<typename C> unsigned int GetSerializeSize(const std::basic_string<C>& str, int, int=0);
357 template<typename Stream, typename C> void Serialize(Stream& os, const std::basic_string<C>& str, int, int=0);
358 template<typename Stream, typename C> void Unserialize(Stream& is, std::basic_string<C>& str, int, int=0);
361 template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&);
362 template<typename T, typename A> unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&);
363 template<typename T, typename A> inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion=PROTOCOL_VERSION);
364 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&);
365 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&);
366 template<typename Stream, typename T, typename A> inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion=PROTOCOL_VERSION);
367 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&);
368 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&);
369 template<typename Stream, typename T, typename A> inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion=PROTOCOL_VERSION);
371 // others derived from vector
372 extern inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion=PROTOCOL_VERSION);
373 template<typename Stream> void Serialize(Stream& os, const CScript& v, int nType, int nVersion=PROTOCOL_VERSION);
374 template<typename Stream> void Unserialize(Stream& is, CScript& v, int nType, int nVersion=PROTOCOL_VERSION);
377 template<typename K, typename T> unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion=PROTOCOL_VERSION);
378 template<typename Stream, typename K, typename T> void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion=PROTOCOL_VERSION);
379 template<typename Stream, typename K, typename T> void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion=PROTOCOL_VERSION);
382 template<typename T0, typename T1, typename T2> unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2>& item, int nType, int nVersion=PROTOCOL_VERSION);
383 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);
384 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);
387 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);
388 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);
389 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);
392 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);
393 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);
394 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);
397 template<typename K, typename Pred, typename A> unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion=PROTOCOL_VERSION);
398 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);
399 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);
406 // If none of the specialized versions above matched, default to calling member function.
407 // "int nType" is changed to "long nType" to keep from getting an ambiguous overload error.
408 // The compiler will only cast int to long if none of the other templates matched.
409 // Thanks to Boost serialization for this idea.
412 inline unsigned int GetSerializeSize(const T& a, long nType, int nVersion=PROTOCOL_VERSION)
414 return a.GetSerializeSize((int)nType, nVersion);
417 template<typename Stream, typename T>
418 inline void Serialize(Stream& os, const T& a, long nType, int nVersion=PROTOCOL_VERSION)
420 a.Serialize(os, (int)nType, nVersion);
423 template<typename Stream, typename T>
424 inline void Unserialize(Stream& is, T& a, long nType, int nVersion=PROTOCOL_VERSION)
426 a.Unserialize(is, (int)nType, nVersion);
437 unsigned int GetSerializeSize(const std::basic_string<C>& str, int, int)
439 return GetSizeOfCompactSize(str.size()) + str.size() * sizeof(str[0]);
442 template<typename Stream, typename C>
443 void Serialize(Stream& os, const std::basic_string<C>& str, int, int)
445 WriteCompactSize(os, str.size());
447 os.write((char*)&str[0], str.size() * sizeof(str[0]));
450 template<typename Stream, typename C>
451 void Unserialize(Stream& is, std::basic_string<C>& str, int, int)
453 unsigned int nSize = ReadCompactSize(is);
456 is.read((char*)&str[0], nSize * sizeof(str[0]));
464 template<typename T, typename A>
465 unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
467 return (GetSizeOfCompactSize(v.size()) + v.size() * sizeof(T));
470 template<typename T, typename A>
471 unsigned int GetSerializeSize_impl(const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
473 unsigned int nSize = GetSizeOfCompactSize(v.size());
474 for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
475 nSize += GetSerializeSize((*vi), nType, nVersion);
479 template<typename T, typename A>
480 inline unsigned int GetSerializeSize(const std::vector<T, A>& v, int nType, int nVersion)
482 return GetSerializeSize_impl(v, nType, nVersion, boost::is_fundamental<T>());
486 template<typename Stream, typename T, typename A>
487 void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
489 WriteCompactSize(os, v.size());
491 os.write((char*)&v[0], v.size() * sizeof(T));
494 template<typename Stream, typename T, typename A>
495 void Serialize_impl(Stream& os, const std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
497 WriteCompactSize(os, v.size());
498 for (typename std::vector<T, A>::const_iterator vi = v.begin(); vi != v.end(); ++vi)
499 ::Serialize(os, (*vi), nType, nVersion);
502 template<typename Stream, typename T, typename A>
503 inline void Serialize(Stream& os, const std::vector<T, A>& v, int nType, int nVersion)
505 Serialize_impl(os, v, nType, nVersion, boost::is_fundamental<T>());
509 template<typename Stream, typename T, typename A>
510 void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::true_type&)
512 //unsigned int nSize = ReadCompactSize(is);
514 //is.read((char*)&v[0], nSize * sizeof(T));
516 // Limit size per read so bogus size value won't cause out of memory
518 unsigned int nSize = ReadCompactSize(is);
522 unsigned int blk = std::min(nSize - i, (unsigned int)(1 + 4999999 / sizeof(T)));
524 is.read((char*)&v[i], blk * sizeof(T));
529 template<typename Stream, typename T, typename A>
530 void Unserialize_impl(Stream& is, std::vector<T, A>& v, int nType, int nVersion, const boost::false_type&)
532 //unsigned int nSize = ReadCompactSize(is);
534 //for (std::vector<T, A>::iterator vi = v.begin(); vi != v.end(); ++vi)
535 // Unserialize(is, (*vi), nType, nVersion);
538 unsigned int nSize = ReadCompactSize(is);
540 unsigned int nMid = 0;
543 nMid += 5000000 / sizeof(T);
547 for (; i < nMid; i++)
548 Unserialize(is, v[i], nType, nVersion);
552 template<typename Stream, typename T, typename A>
553 inline void Unserialize(Stream& is, std::vector<T, A>& v, int nType, int nVersion)
555 Unserialize_impl(is, v, nType, nVersion, boost::is_fundamental<T>());
561 // others derived from vector
563 inline unsigned int GetSerializeSize(const CScript& v, int nType, int nVersion)
565 return GetSerializeSize((const std::vector<unsigned char>&)v, nType, nVersion);
568 template<typename Stream>
569 void Serialize(Stream& os, const CScript& v, int nType, int nVersion)
571 Serialize(os, (const std::vector<unsigned char>&)v, nType, nVersion);
574 template<typename Stream>
575 void Unserialize(Stream& is, CScript& v, int nType, int nVersion)
577 Unserialize(is, (std::vector<unsigned char>&)v, nType, nVersion);
585 template<typename K, typename T>
586 unsigned int GetSerializeSize(const std::pair<K, T>& item, int nType, int nVersion)
588 return GetSerializeSize(item.first, nType, nVersion) + GetSerializeSize(item.second, nType, nVersion);
591 template<typename Stream, typename K, typename T>
592 void Serialize(Stream& os, const std::pair<K, T>& item, int nType, int nVersion)
594 Serialize(os, item.first, nType, nVersion);
595 Serialize(os, item.second, nType, nVersion);
598 template<typename Stream, typename K, typename T>
599 void Unserialize(Stream& is, std::pair<K, T>& item, int nType, int nVersion)
601 Unserialize(is, item.first, nType, nVersion);
602 Unserialize(is, item.second, nType, nVersion);
610 template<typename T0, typename T1, typename T2>
611 unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
613 unsigned int nSize = 0;
614 nSize += GetSerializeSize(boost::get<0>(item), nType, nVersion);
615 nSize += GetSerializeSize(boost::get<1>(item), nType, nVersion);
616 nSize += GetSerializeSize(boost::get<2>(item), nType, nVersion);
620 template<typename Stream, typename T0, typename T1, typename T2>
621 void Serialize(Stream& os, const boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
623 Serialize(os, boost::get<0>(item), nType, nVersion);
624 Serialize(os, boost::get<1>(item), nType, nVersion);
625 Serialize(os, boost::get<2>(item), nType, nVersion);
628 template<typename Stream, typename T0, typename T1, typename T2>
629 void Unserialize(Stream& is, boost::tuple<T0, T1, T2>& item, int nType, int nVersion)
631 Unserialize(is, boost::get<0>(item), nType, nVersion);
632 Unserialize(is, boost::get<1>(item), nType, nVersion);
633 Unserialize(is, boost::get<2>(item), nType, nVersion);
641 template<typename T0, typename T1, typename T2, typename T3>
642 unsigned int GetSerializeSize(const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
644 unsigned int nSize = 0;
645 nSize += GetSerializeSize(boost::get<0>(item), nType, nVersion);
646 nSize += GetSerializeSize(boost::get<1>(item), nType, nVersion);
647 nSize += GetSerializeSize(boost::get<2>(item), nType, nVersion);
648 nSize += GetSerializeSize(boost::get<3>(item), nType, nVersion);
652 template<typename Stream, typename T0, typename T1, typename T2, typename T3>
653 void Serialize(Stream& os, const boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
655 Serialize(os, boost::get<0>(item), nType, nVersion);
656 Serialize(os, boost::get<1>(item), nType, nVersion);
657 Serialize(os, boost::get<2>(item), nType, nVersion);
658 Serialize(os, boost::get<3>(item), nType, nVersion);
661 template<typename Stream, typename T0, typename T1, typename T2, typename T3>
662 void Unserialize(Stream& is, boost::tuple<T0, T1, T2, T3>& item, int nType, int nVersion)
664 Unserialize(is, boost::get<0>(item), nType, nVersion);
665 Unserialize(is, boost::get<1>(item), nType, nVersion);
666 Unserialize(is, boost::get<2>(item), nType, nVersion);
667 Unserialize(is, boost::get<3>(item), nType, nVersion);
675 template<typename K, typename T, typename Pred, typename A>
676 unsigned int GetSerializeSize(const std::map<K, T, Pred, A>& m, int nType, int nVersion)
678 unsigned int nSize = GetSizeOfCompactSize(m.size());
679 for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
680 nSize += GetSerializeSize((*mi), nType, nVersion);
684 template<typename Stream, typename K, typename T, typename Pred, typename A>
685 void Serialize(Stream& os, const std::map<K, T, Pred, A>& m, int nType, int nVersion)
687 WriteCompactSize(os, m.size());
688 for (typename std::map<K, T, Pred, A>::const_iterator mi = m.begin(); mi != m.end(); ++mi)
689 Serialize(os, (*mi), nType, nVersion);
692 template<typename Stream, typename K, typename T, typename Pred, typename A>
693 void Unserialize(Stream& is, std::map<K, T, Pred, A>& m, int nType, int nVersion)
696 unsigned int nSize = ReadCompactSize(is);
697 typename std::map<K, T, Pred, A>::iterator mi = m.begin();
698 for (unsigned int i = 0; i < nSize; i++)
700 std::pair<K, T> item;
701 Unserialize(is, item, nType, nVersion);
702 mi = m.insert(mi, item);
711 template<typename K, typename Pred, typename A>
712 unsigned int GetSerializeSize(const std::set<K, Pred, A>& m, int nType, int nVersion)
714 unsigned int nSize = GetSizeOfCompactSize(m.size());
715 for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
716 nSize += GetSerializeSize((*it), nType, nVersion);
720 template<typename Stream, typename K, typename Pred, typename A>
721 void Serialize(Stream& os, const std::set<K, Pred, A>& m, int nType, int nVersion)
723 WriteCompactSize(os, m.size());
724 for (typename std::set<K, Pred, A>::const_iterator it = m.begin(); it != m.end(); ++it)
725 Serialize(os, (*it), nType, nVersion);
728 template<typename Stream, typename K, typename Pred, typename A>
729 void Unserialize(Stream& is, std::set<K, Pred, A>& m, int nType, int nVersion)
732 unsigned int nSize = ReadCompactSize(is);
733 typename std::set<K, Pred, A>::iterator it = m.begin();
734 for (unsigned int i = 0; i < nSize; i++)
737 Unserialize(is, key, nType, nVersion);
738 it = m.insert(it, key);
745 // Support for IMPLEMENT_SERIALIZE and READWRITE macro
747 class CSerActionGetSerializeSize { };
748 class CSerActionSerialize { };
749 class CSerActionUnserialize { };
751 template<typename Stream, typename T>
752 inline unsigned int SerReadWrite(Stream& s, const T& obj, int nType, int nVersion, CSerActionGetSerializeSize ser_action)
754 return ::GetSerializeSize(obj, nType, nVersion);
757 template<typename Stream, typename T>
758 inline unsigned int SerReadWrite(Stream& s, const T& obj, int nType, int nVersion, CSerActionSerialize ser_action)
760 ::Serialize(s, obj, nType, nVersion);
764 template<typename Stream, typename T>
765 inline unsigned int SerReadWrite(Stream& s, T& obj, int nType, int nVersion, CSerActionUnserialize ser_action)
767 ::Unserialize(s, obj, nType, nVersion);
771 struct ser_streamplaceholder
786 // Allocator that locks its contents from being paged
787 // out of memory and clears its contents before deletion.
790 struct secure_allocator : public std::allocator<T>
792 // MSVC8 default copy constructor is broken
793 typedef std::allocator<T> base;
794 typedef typename base::size_type size_type;
795 typedef typename base::difference_type difference_type;
796 typedef typename base::pointer pointer;
797 typedef typename base::const_pointer const_pointer;
798 typedef typename base::reference reference;
799 typedef typename base::const_reference const_reference;
800 typedef typename base::value_type value_type;
801 secure_allocator() throw() {}
802 secure_allocator(const secure_allocator& a) throw() : base(a) {}
803 template <typename U>
804 secure_allocator(const secure_allocator<U>& a) throw() : base(a) {}
805 ~secure_allocator() throw() {}
806 template<typename _Other> struct rebind
807 { typedef secure_allocator<_Other> other; };
809 T* allocate(std::size_t n, const void *hint = 0)
812 p = std::allocator<T>::allocate(n, hint);
814 mlock(p, sizeof(T) * n);
818 void deallocate(T* p, std::size_t n)
822 memset(p, 0, sizeof(T) * n);
823 munlock(p, sizeof(T) * n);
825 std::allocator<T>::deallocate(p, n);
832 // Double ended buffer combining vector and stream-like interfaces.
833 // >> and << read and write unformatted data using the above serialization templates.
834 // Fills with data in linear time; some stringstream implementations take N^2 time.
839 typedef std::vector<char, secure_allocator<char> > vector_type;
841 unsigned int nReadPos;
848 typedef vector_type::allocator_type allocator_type;
849 typedef vector_type::size_type size_type;
850 typedef vector_type::difference_type difference_type;
851 typedef vector_type::reference reference;
852 typedef vector_type::const_reference const_reference;
853 typedef vector_type::value_type value_type;
854 typedef vector_type::iterator iterator;
855 typedef vector_type::const_iterator const_iterator;
856 typedef vector_type::reverse_iterator reverse_iterator;
858 explicit CDataStream(int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION)
860 Init(nTypeIn, nVersionIn);
863 CDataStream(const_iterator pbegin, const_iterator pend, int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION) : vch(pbegin, pend)
865 Init(nTypeIn, nVersionIn);
868 #if !defined(_MSC_VER) || _MSC_VER >= 1300
869 CDataStream(const char* pbegin, const char* pend, int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION) : vch(pbegin, pend)
871 Init(nTypeIn, nVersionIn);
875 CDataStream(const vector_type& vchIn, int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION) : vch(vchIn.begin(), vchIn.end())
877 Init(nTypeIn, nVersionIn);
880 CDataStream(const std::vector<char>& vchIn, int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION) : vch(vchIn.begin(), vchIn.end())
882 Init(nTypeIn, nVersionIn);
885 CDataStream(const std::vector<unsigned char>& vchIn, int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION) : vch((char*)&vchIn.begin()[0], (char*)&vchIn.end()[0])
887 Init(nTypeIn, nVersionIn);
890 void Init(int nTypeIn=SER_NETWORK, int nVersionIn=PROTOCOL_VERSION)
894 nVersion = nVersionIn;
896 exceptmask = std::ios::badbit | std::ios::failbit;
899 CDataStream& operator+=(const CDataStream& b)
901 vch.insert(vch.end(), b.begin(), b.end());
905 friend CDataStream operator+(const CDataStream& a, const CDataStream& b)
912 std::string str() const
914 return (std::string(begin(), end()));
921 const_iterator begin() const { return vch.begin() + nReadPos; }
922 iterator begin() { return vch.begin() + nReadPos; }
923 const_iterator end() const { return vch.end(); }
924 iterator end() { return vch.end(); }
925 size_type size() const { return vch.size() - nReadPos; }
926 bool empty() const { return vch.size() == nReadPos; }
927 void resize(size_type n, value_type c=0) { vch.resize(n + nReadPos, c); }
928 void reserve(size_type n) { vch.reserve(n + nReadPos); }
929 const_reference operator[](size_type pos) const { return vch[pos + nReadPos]; }
930 reference operator[](size_type pos) { return vch[pos + nReadPos]; }
931 void clear() { vch.clear(); nReadPos = 0; }
932 iterator insert(iterator it, const char& x=char()) { return vch.insert(it, x); }
933 void insert(iterator it, size_type n, const char& x) { vch.insert(it, n, x); }
935 void insert(iterator it, const_iterator first, const_iterator last)
937 if (it == vch.begin() + nReadPos && last - first <= nReadPos)
939 // special case for inserting at the front when there's room
940 nReadPos -= (last - first);
941 memcpy(&vch[nReadPos], &first[0], last - first);
944 vch.insert(it, first, last);
947 void insert(iterator it, std::vector<char>::const_iterator first, std::vector<char>::const_iterator last)
949 if (it == vch.begin() + nReadPos && last - first <= nReadPos)
951 // special case for inserting at the front when there's room
952 nReadPos -= (last - first);
953 memcpy(&vch[nReadPos], &first[0], last - first);
956 vch.insert(it, first, last);
959 #if !defined(_MSC_VER) || _MSC_VER >= 1300
960 void insert(iterator it, const char* first, const char* last)
962 if (it == vch.begin() + nReadPos && last - first <= nReadPos)
964 // special case for inserting at the front when there's room
965 nReadPos -= (last - first);
966 memcpy(&vch[nReadPos], &first[0], last - first);
969 vch.insert(it, first, last);
973 iterator erase(iterator it)
975 if (it == vch.begin() + nReadPos)
977 // special case for erasing from the front
978 if (++nReadPos >= vch.size())
980 // whenever we reach the end, we take the opportunity to clear the buffer
982 return vch.erase(vch.begin(), vch.end());
984 return vch.begin() + nReadPos;
987 return vch.erase(it);
990 iterator erase(iterator first, iterator last)
992 if (first == vch.begin() + nReadPos)
994 // special case for erasing from the front
995 if (last == vch.end())
998 return vch.erase(vch.begin(), vch.end());
1002 nReadPos = (last - vch.begin());
1007 return vch.erase(first, last);
1010 inline void Compact()
1012 vch.erase(vch.begin(), vch.begin() + nReadPos);
1016 bool Rewind(size_type n)
1018 // Rewind by n characters if the buffer hasn't been compacted yet
1029 void setstate(short bits, const char* psz)
1032 if (state & exceptmask)
1033 throw std::ios_base::failure(psz);
1036 bool eof() const { return size() == 0; }
1037 bool fail() const { return state & (std::ios::badbit | std::ios::failbit); }
1038 bool good() const { return !eof() && (state == 0); }
1039 void clear(short n) { state = n; } // name conflict with vector clear()
1040 short exceptions() { return exceptmask; }
1041 short exceptions(short mask) { short prev = exceptmask; exceptmask = mask; setstate(0, "CDataStream"); return prev; }
1042 CDataStream* rdbuf() { return this; }
1043 int in_avail() { return size(); }
1045 void SetType(int n) { nType = n; }
1046 int GetType() { return nType; }
1047 void SetVersion(int n) { nVersion = n; }
1048 int GetVersion() { return nVersion; }
1049 void ReadVersion() { *this >> nVersion; }
1050 void WriteVersion() { *this << nVersion; }
1052 CDataStream& read(char* pch, int nSize)
1054 // Read from the beginning of the buffer
1056 unsigned int nReadPosNext = nReadPos + nSize;
1057 if (nReadPosNext >= vch.size())
1059 if (nReadPosNext > vch.size())
1061 setstate(std::ios::failbit, "CDataStream::read() : end of data");
1062 memset(pch, 0, nSize);
1063 nSize = vch.size() - nReadPos;
1065 memcpy(pch, &vch[nReadPos], nSize);
1070 memcpy(pch, &vch[nReadPos], nSize);
1071 nReadPos = nReadPosNext;
1075 CDataStream& ignore(int nSize)
1077 // Ignore from the beginning of the buffer
1079 unsigned int nReadPosNext = nReadPos + nSize;
1080 if (nReadPosNext >= vch.size())
1082 if (nReadPosNext > vch.size())
1084 setstate(std::ios::failbit, "CDataStream::ignore() : end of data");
1085 nSize = vch.size() - nReadPos;
1091 nReadPos = nReadPosNext;
1095 CDataStream& write(const char* pch, int nSize)
1097 // Write to the end of the buffer
1099 vch.insert(vch.end(), pch, pch + nSize);
1103 template<typename Stream>
1104 void Serialize(Stream& s, int nType=0, int nVersion=PROTOCOL_VERSION) const
1106 // Special case: stream << stream concatenates like stream += stream
1108 s.write((char*)&vch[0], vch.size() * sizeof(vch[0]));
1111 template<typename T>
1112 unsigned int GetSerializeSize(const T& obj)
1114 // Tells the size of the object if serialized to this stream
1115 return ::GetSerializeSize(obj, nType, nVersion);
1118 template<typename T>
1119 CDataStream& operator<<(const T& obj)
1121 // Serialize to this stream
1122 ::Serialize(*this, obj, nType, nVersion);
1126 template<typename T>
1127 CDataStream& operator>>(T& obj)
1129 // Unserialize from this stream
1130 ::Unserialize(*this, obj, nType, nVersion);
1135 #ifdef TESTCDATASTREAM
1142 // n=16000 0 seconds
1143 // n=32000 0 seconds
1144 // n=64000 1 seconds
1145 // n=128000 1 seconds
1146 // n=256000 2 seconds
1147 // n=512000 4 seconds
1148 // n=1024000 8 seconds
1149 // n=2048000 16 seconds
1150 // n=4096000 32 seconds
1154 // n=4000 13 seconds
1155 // n=8000 87 seconds
1156 // n=16000 400 seconds
1157 // n=32000 1660 seconds
1158 // n=64000 6749 seconds
1159 // n=128000 27241 seconds
1160 // n=256000 109804 seconds
1162 int main(int argc, char *argv[])
1164 vector<unsigned char> vch(0xcc, 250);
1165 printf("CDataStream:\n");
1166 for (int n = 1000; n <= 4500000; n *= 2)
1169 time_t nStart = time(NULL);
1170 for (int i = 0; i < n; i++)
1171 ss.write((char*)&vch[0], vch.size());
1172 printf("n=%-10d %d seconds\n", n, time(NULL) - nStart);
1174 printf("stringstream:\n");
1175 for (int n = 1000; n <= 4500000; n *= 2)
1178 time_t nStart = time(NULL);
1179 for (int i = 0; i < n; i++)
1180 ss.write((char*)&vch[0], vch.size());
1181 printf("n=%-10d %d seconds\n", n, time(NULL) - nStart);
1196 // Automatic closing wrapper for FILE*
1197 // - Will automatically close the file when it goes out of scope if not null.
1198 // - If you're returning the file pointer, return file.release().
1199 // - If you need to close the file early, use file.fclose() instead of fclose(file).
1211 typedef FILE element_type;
1213 CAutoFile(FILE* filenew=NULL, int nTypeIn=SER_DISK, int nVersionIn=PROTOCOL_VERSION)
1217 nVersion = nVersionIn;
1219 exceptmask = std::ios::badbit | std::ios::failbit;
1229 if (file != NULL && file != stdin && file != stdout && file != stderr)
1234 FILE* release() { FILE* ret = file; file = NULL; return ret; }
1235 operator FILE*() { return file; }
1236 FILE* operator->() { return file; }
1237 FILE& operator*() { return *file; }
1238 FILE** operator&() { return &file; }
1239 FILE* operator=(FILE* pnew) { return file = pnew; }
1240 bool operator!() { return (file == NULL); }
1246 void setstate(short bits, const char* psz)
1249 if (state & exceptmask)
1250 throw std::ios_base::failure(psz);
1253 bool fail() const { return state & (std::ios::badbit | std::ios::failbit); }
1254 bool good() const { return state == 0; }
1255 void clear(short n = 0) { state = n; }
1256 short exceptions() { return exceptmask; }
1257 short exceptions(short mask) { short prev = exceptmask; exceptmask = mask; setstate(0, "CAutoFile"); return prev; }
1259 void SetType(int n) { nType = n; }
1260 int GetType() { return nType; }
1261 void SetVersion(int n) { nVersion = n; }
1262 int GetVersion() { return nVersion; }
1263 void ReadVersion() { *this >> nVersion; }
1264 void WriteVersion() { *this << nVersion; }
1266 CAutoFile& read(char* pch, int nSize)
1269 throw std::ios_base::failure("CAutoFile::read : file handle is NULL");
1270 if (fread(pch, 1, nSize, file) != nSize)
1271 setstate(std::ios::failbit, feof(file) ? "CAutoFile::read : end of file" : "CAutoFile::read : fread failed");
1275 CAutoFile& write(const char* pch, int nSize)
1278 throw std::ios_base::failure("CAutoFile::write : file handle is NULL");
1279 if (fwrite(pch, 1, nSize, file) != nSize)
1280 setstate(std::ios::failbit, "CAutoFile::write : write failed");
1284 template<typename T>
1285 unsigned int GetSerializeSize(const T& obj)
1287 // Tells the size of the object if serialized to this stream
1288 return ::GetSerializeSize(obj, nType, nVersion);
1291 template<typename T>
1292 CAutoFile& operator<<(const T& obj)
1294 // Serialize to this stream
1296 throw std::ios_base::failure("CAutoFile::operator<< : file handle is NULL");
1297 ::Serialize(*this, obj, nType, nVersion);
1301 template<typename T>
1302 CAutoFile& operator>>(T& obj)
1304 // Unserialize from this stream
1306 throw std::ios_base::failure("CAutoFile::operator>> : file handle is NULL");
1307 ::Unserialize(*this, obj, nType, nVersion);