This repository has been archived by the owner on Oct 28, 2021. It is now read-only.
/
Client.cpp
809 lines (720 loc) · 18.9 KB
/
Client.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file Client.cpp
* @author Gav Wood <i@gavwood.com>
* @date 2014
*/
#include "Client.h"
#include <chrono>
#include <thread>
#include <boost/filesystem.hpp>
#include <libdevcore/Log.h>
#include <libp2p/Host.h>
#include "Defaults.h"
#include "Executive.h"
#include "EthereumHost.h"
using namespace std;
using namespace dev;
using namespace dev::eth;
using namespace p2p;
VersionChecker::VersionChecker(string const& _dbPath):
m_path(_dbPath.size() ? _dbPath : Defaults::dbPath())
{
auto protocolContents = contents(m_path + "/protocol");
auto databaseContents = contents(m_path + "/database");
m_ok = RLP(protocolContents).toInt<unsigned>(RLP::LaisezFaire) == c_protocolVersion && RLP(databaseContents).toInt<unsigned>(RLP::LaisezFaire) == c_databaseVersion;
}
void VersionChecker::setOk()
{
if (!m_ok)
{
try
{
boost::filesystem::create_directory(m_path);
}
catch (...)
{
cwarn << "Unhandled exception! Failed to create directory: " << m_path << "\n" << boost::current_exception_diagnostic_information();
}
writeFile(m_path + "/protocol", rlp(c_protocolVersion));
writeFile(m_path + "/database", rlp(c_databaseVersion));
}
}
Client::Client(p2p::Host* _extNet, std::string const& _dbPath, bool _forceClean, u256 _networkId, int miners):
Worker("eth"),
m_vc(_dbPath),
m_bc(_dbPath, !m_vc.ok() || _forceClean),
m_stateDB(State::openDB(_dbPath, !m_vc.ok() || _forceClean)),
m_preMine(Address(), m_stateDB),
m_postMine(Address(), m_stateDB)
{
m_host = _extNet->registerCapability(new EthereumHost(m_bc, m_tq, m_bq, _networkId));
if (miners > -1)
setMiningThreads(miners);
else
setMiningThreads();
if (_dbPath.size())
Defaults::setDBPath(_dbPath);
m_vc.setOk();
doWork();
startWorking();
}
Client::~Client()
{
stopWorking();
}
void Client::setNetworkId(u256 _n)
{
if (auto h = m_host.lock())
h->setNetworkId(_n);
}
DownloadMan const* Client::downloadMan() const
{
if (auto h = m_host.lock())
return &(h->downloadMan());
return nullptr;
}
bool Client::isSyncing() const
{
if (auto h = m_host.lock())
return h->isSyncing();
return false;
}
void Client::doneWorking()
{
// Synchronise the state according to the head of the block chain.
// TODO: currently it contains keys for *all* blocks. Make it remove old ones.
WriteGuard l(x_stateDB);
m_preMine.sync(m_bc);
m_postMine = m_preMine;
}
void Client::flushTransactions()
{
doWork();
}
void Client::killChain()
{
bool wasMining = isMining();
if (wasMining)
stopMining();
stopWorking();
m_tq.clear();
m_bq.clear();
m_localMiners.clear();
m_preMine = State();
m_postMine = State();
{
WriteGuard l(x_stateDB);
m_stateDB = OverlayDB();
m_stateDB = State::openDB(Defaults::dbPath(), true);
}
m_bc.reopen(Defaults::dbPath(), true);
m_preMine = State(Address(), m_stateDB);
m_postMine = State(Address(), m_stateDB);
if (auto h = m_host.lock())
h->reset();
doWork();
setMiningThreads(0);
startWorking();
if (wasMining)
startMining();
}
void Client::clearPending()
{
h256Set changeds;
{
WriteGuard l(x_stateDB);
if (!m_postMine.pending().size())
return;
// for (unsigned i = 0; i < m_postMine.pending().size(); ++i)
// appendFromNewPending(m_postMine.logBloom(i), changeds);
changeds.insert(PendingChangedFilter);
m_tq.clear();
m_postMine = m_preMine;
}
{
ReadGuard l(x_localMiners);
for (auto& m: m_localMiners)
m.noteStateChange();
}
noteChanged(changeds);
}
unsigned Client::installWatch(h256 _h)
{
unsigned ret;
{
Guard l(m_filterLock);
ret = m_watches.size() ? m_watches.rbegin()->first + 1 : 0;
m_watches[ret] = ClientWatch(_h);
cwatch << "+++" << ret << _h.abridged();
}
auto ch = logs(ret);
if (ch.empty())
ch.push_back(InitialChange);
{
Guard l(m_filterLock);
swap(m_watches[ret].changes, ch);
}
return ret;
}
unsigned Client::installWatch(LogFilter const& _f)
{
h256 h = _f.sha3();
{
Guard l(m_filterLock);
if (!m_filters.count(h))
{
cwatch << "FFF" << _f << h.abridged();
m_filters.insert(make_pair(h, _f));
}
}
return installWatch(h);
}
void Client::uninstallWatch(unsigned _i)
{
cwatch << "XXX" << _i;
Guard l(m_filterLock);
auto it = m_watches.find(_i);
if (it == m_watches.end())
return;
auto id = it->second.id;
m_watches.erase(it);
auto fit = m_filters.find(id);
if (fit != m_filters.end())
if (!--fit->second.refCount)
{
cwatch << "*X*" << fit->first << ":" << fit->second.filter;
m_filters.erase(fit);
}
}
void Client::noteChanged(h256Set const& _filters)
{
Guard l(m_filterLock);
if (_filters.size())
cnote << "noteChanged(" << _filters << ")";
// accrue all changes left in each filter into the watches.
for (auto& i: m_watches)
if (_filters.count(i.second.id))
{
cwatch << "!!!" << i.first << i.second.id;
if (m_filters.count(i.second.id))
i.second.changes += m_filters.at(i.second.id).changes;
else
i.second.changes.push_back(LocalisedLogEntry(SpecialLogEntry, 0));
}
// clear the filters now.
for (auto& i: m_filters)
i.second.changes.clear();
}
LocalisedLogEntries Client::peekWatch(unsigned _watchId) const
{
Guard l(m_filterLock);
try {
auto& w = m_watches.at(_watchId);
w.lastPoll = chrono::system_clock::now();
return w.changes;
} catch (...) {}
return LocalisedLogEntries();
}
LocalisedLogEntries Client::checkWatch(unsigned _watchId)
{
Guard l(m_filterLock);
LocalisedLogEntries ret;
try {
auto& w = m_watches.at(_watchId);
std::swap(ret, w.changes);
w.lastPoll = chrono::system_clock::now();
} catch (...) {}
return ret;
}
void Client::appendFromNewPending(TransactionReceipt const& _receipt, h256Set& io_changed)
{
Guard l(m_filterLock);
for (pair<h256 const, InstalledFilter>& i: m_filters)
if ((unsigned)i.second.filter.latest() > m_bc.number())
{
// acceptable number.
auto m = i.second.filter.matches(_receipt);
if (m.size())
{
// filter catches them
for (LogEntry const& l: m)
i.second.changes.push_back(LocalisedLogEntry(l, m_bc.number() + 1));
io_changed.insert(i.first);
}
}
}
void Client::appendFromNewBlock(h256 const& _block, h256Set& io_changed)
{
// TODO: more precise check on whether the txs match.
auto d = m_bc.info(_block);
auto br = m_bc.receipts(_block);
Guard l(m_filterLock);
for (pair<h256 const, InstalledFilter>& i: m_filters)
if ((unsigned)i.second.filter.latest() >= d.number && (unsigned)i.second.filter.earliest() <= d.number && i.second.filter.matches(d.logBloom))
// acceptable number & looks like block may contain a matching log entry.
for (TransactionReceipt const& tr: br.receipts)
{
auto m = i.second.filter.matches(tr);
if (m.size())
{
// filter catches them
for (LogEntry const& l: m)
i.second.changes.push_back(LocalisedLogEntry(l, (unsigned)d.number));
io_changed.insert(i.first);
}
}
}
void Client::setForceMining(bool _enable)
{
m_forceMining = _enable;
ReadGuard l(x_localMiners);
for (auto& m: m_localMiners)
m.noteStateChange();
}
void Client::setMiningThreads(unsigned _threads)
{
stopMining();
auto t = _threads ? _threads : thread::hardware_concurrency();
WriteGuard l(x_localMiners);
m_localMiners.clear();
m_localMiners.resize(t);
unsigned i = 0;
for (auto& m: m_localMiners)
m.setup(this, i++);
}
MineProgress Client::miningProgress() const
{
MineProgress ret;
ReadGuard l(x_localMiners);
for (auto& m: m_localMiners)
ret.combine(m.miningProgress());
return ret;
}
std::list<MineInfo> Client::miningHistory()
{
std::list<MineInfo> ret;
ReadGuard l(x_localMiners);
if (m_localMiners.empty())
return ret;
ret = m_localMiners[0].miningHistory();
for (unsigned i = 1; i < m_localMiners.size(); ++i)
{
auto l = m_localMiners[i].miningHistory();
auto ri = ret.begin();
auto li = l.begin();
for (; ri != ret.end() && li != l.end(); ++ri, ++li)
ri->combine(*li);
}
return ret;
}
void Client::setupState(State& _s)
{
{
ReadGuard l(x_stateDB);
cwork << "SETUP MINE";
_s = m_postMine;
}
if (m_paranoia)
{
if (_s.amIJustParanoid(m_bc))
{
cnote << "I'm just paranoid. Block is fine.";
_s.commitToMine(m_bc);
}
else
{
cwarn << "I'm not just paranoid. Cannot mine. Please file a bug report.";
}
}
else
_s.commitToMine(m_bc);
}
void Client::transact(Secret _secret, u256 _value, Address _dest, bytes const& _data, u256 _gas, u256 _gasPrice)
{
startWorking();
u256 n;
{
ReadGuard l(x_stateDB);
n = m_postMine.transactionsFrom(toAddress(_secret));
}
Transaction t(_value, _gasPrice, _gas, _dest, _data, n, _secret);
// cdebug << "Nonce at " << toAddress(_secret) << " pre:" << m_preMine.transactionsFrom(toAddress(_secret)) << " post:" << m_postMine.transactionsFrom(toAddress(_secret));
cnote << "New transaction " << t;
m_tq.attemptImport(t.rlp());
}
bytes Client::call(Secret _secret, u256 _value, Address _dest, bytes const& _data, u256 _gas, u256 _gasPrice)
{
bytes out;
try
{
u256 n;
State temp;
// cdebug << "Nonce at " << toAddress(_secret) << " pre:" << m_preMine.transactionsFrom(toAddress(_secret)) << " post:" << m_postMine.transactionsFrom(toAddress(_secret));
{
ReadGuard l(x_stateDB);
temp = m_postMine;
n = temp.transactionsFrom(toAddress(_secret));
}
Transaction t(_value, _gasPrice, _gas, _dest, _data, n, _secret);
u256 gasUsed = temp.execute(m_bc, t.rlp(), &out, false);
(void)gasUsed; // TODO: do something with gasused which it returns.
}
catch (...)
{
// TODO: Some sort of notification of failure.
}
return out;
}
bytes Client::call(Address _dest, bytes const& _data, u256 _gas, u256 _value, u256 _gasPrice)
{
try
{
State temp;
// cdebug << "Nonce at " << toAddress(_secret) << " pre:" << m_preMine.transactionsFrom(toAddress(_secret)) << " post:" << m_postMine.transactionsFrom(toAddress(_secret));
{
ReadGuard l(x_stateDB);
temp = m_postMine;
}
Executive e(temp, LastHashes(), 0);
if (!e.call(_dest, _dest, Address(), _value, _gasPrice, &_data, _gas, Address()))
{
e.go();
return e.out().toBytes();
}
}
catch (...)
{
// TODO: Some sort of notification of failure.
}
return bytes();
}
Address Client::transact(Secret _secret, u256 _endowment, bytes const& _init, u256 _gas, u256 _gasPrice)
{
startWorking();
u256 n;
{
ReadGuard l(x_stateDB);
n = m_postMine.transactionsFrom(toAddress(_secret));
}
Transaction t(_endowment, _gasPrice, _gas, _init, n, _secret);
cnote << "New transaction " << t;
m_tq.attemptImport(t.rlp());
return right160(sha3(rlpList(t.sender(), t.nonce())));
}
void Client::inject(bytesConstRef _rlp)
{
startWorking();
m_tq.attemptImport(_rlp);
}
pair<h256, u256> Client::getWork()
{
Guard l(x_remoteMiner);
{
ReadGuard l(x_stateDB);
m_remoteMiner.update(m_postMine, m_bc);
}
return make_pair(m_remoteMiner.workHash(), m_remoteMiner.difficulty());
}
bool Client::submitNonce(h256 const&_nonce)
{
Guard l(x_remoteMiner);
return m_remoteMiner.submitWork(_nonce);
}
void Client::doWork()
{
// TODO: Use condition variable rather than polling.
cworkin << "WORK";
h256Set changeds;
auto maintainMiner = [&](Miner& m)
{
if (m.isComplete())
{
cwork << "CHAIN <== postSTATE";
h256s hs;
{
WriteGuard l(x_stateDB);
hs = m_bc.attemptImport(m.blockData(), m_stateDB);
}
if (hs.size())
{
for (auto const& h: hs)
appendFromNewBlock(h, changeds);
changeds.insert(ChainChangedFilter);
}
for (auto& m: m_localMiners)
m.noteStateChange();
}
};
{
ReadGuard l(x_localMiners);
for (auto& m: m_localMiners)
maintainMiner(m);
}
{
Guard l(x_remoteMiner);
maintainMiner(m_remoteMiner);
}
// Synchronise state to block chain.
// This should remove any transactions on our queue that are included within our state.
// It also guarantees that the state reflects the longest (valid!) chain on the block chain.
// This might mean reverting to an earlier state and replaying some blocks, or, (worst-case:
// if there are no checkpoints before our fork) reverting to the genesis block and replaying
// all blocks.
// Resynchronise state with block chain & trans
bool resyncStateNeeded = false;
{
WriteGuard l(x_stateDB);
cwork << "BQ ==> CHAIN ==> STATE";
OverlayDB db = m_stateDB;
x_stateDB.unlock();
h256s newBlocks = m_bc.sync(m_bq, db, 100); // TODO: remove transactions from m_tq nicely rather than relying on out of date nonce later on.
if (newBlocks.size())
{
for (auto i: newBlocks)
appendFromNewBlock(i, changeds);
changeds.insert(ChainChangedFilter);
}
x_stateDB.lock();
if (newBlocks.size())
m_stateDB = db;
cwork << "preSTATE <== CHAIN";
if (m_preMine.sync(m_bc) || m_postMine.address() != m_preMine.address())
{
if (isMining())
cnote << "New block on chain: Restarting mining operation.";
m_postMine = m_preMine;
resyncStateNeeded = true;
changeds.insert(PendingChangedFilter);
// TODO: Move transactions pending from m_postMine back to transaction queue.
}
// returns h256s as blooms, once for each transaction.
cwork << "postSTATE <== TQ";
TransactionReceipts newPendingReceipts = m_postMine.sync(m_bc, m_tq);
if (newPendingReceipts.size())
{
for (auto i: newPendingReceipts)
appendFromNewPending(i, changeds);
changeds.insert(PendingChangedFilter);
if (isMining())
cnote << "Additional transaction ready: Restarting mining operation.";
resyncStateNeeded = true;
}
}
if (resyncStateNeeded)
{
ReadGuard l(x_localMiners);
for (auto& m: m_localMiners)
m.noteStateChange();
}
cwork << "noteChanged" << changeds.size() << "items";
noteChanged(changeds);
cworkout << "WORK";
this_thread::sleep_for(chrono::milliseconds(100));
if (chrono::system_clock::now() - m_lastGarbageCollection > chrono::seconds(5))
{
// garbage collect on watches
vector<unsigned> toUninstall;
{
Guard l(m_filterLock);
for (auto key: keysOf(m_watches))
if (chrono::system_clock::now() - m_watches[key].lastPoll > chrono::seconds(20))
{
toUninstall.push_back(key);
cnote << "GC: Uninstall" << key << "(" << chrono::duration_cast<chrono::seconds>(chrono::system_clock::now() - m_watches[key].lastPoll).count() << "s old)";
}
}
for (auto i: toUninstall)
uninstallWatch(i);
m_lastGarbageCollection = chrono::system_clock::now();
}
}
unsigned Client::numberOf(int _n) const
{
if (_n > 0)
return _n;
else if (_n == GenesisBlock)
return 0;
else
return m_bc.details().number + max(-(int)m_bc.details().number, 1 + _n);
}
State Client::asOf(int _h) const
{
ReadGuard l(x_stateDB);
if (_h == 0)
return m_postMine;
else if (_h == -1)
return m_preMine;
else
return State(m_stateDB, m_bc, m_bc.numberHash(numberOf(_h)));
}
State Client::state(unsigned _txi, h256 _block) const
{
ReadGuard l(x_stateDB);
return State(m_stateDB, m_bc, _block).fromPending(_txi);
}
eth::State Client::state(h256 _block) const
{
ReadGuard l(x_stateDB);
return State(m_stateDB, m_bc, _block);
}
eth::State Client::state(unsigned _txi) const
{
ReadGuard l(x_stateDB);
return m_postMine.fromPending(_txi);
}
StateDiff Client::diff(unsigned _txi, int _block) const
{
State st = asOf(_block);
return st.fromPending(_txi).diff(st.fromPending(_txi + 1));
}
StateDiff Client::diff(unsigned _txi, h256 _block) const
{
State st = state(_block);
return st.fromPending(_txi).diff(st.fromPending(_txi + 1));
}
std::vector<Address> Client::addresses(int _block) const
{
vector<Address> ret;
for (auto const& i: asOf(_block).addresses())
ret.push_back(i.first);
return ret;
}
u256 Client::balanceAt(Address _a, int _block) const
{
return asOf(_block).balance(_a);
}
std::map<u256, u256> Client::storageAt(Address _a, int _block) const
{
return asOf(_block).storage(_a);
}
u256 Client::countAt(Address _a, int _block) const
{
return asOf(_block).transactionsFrom(_a);
}
u256 Client::stateAt(Address _a, u256 _l, int _block) const
{
return asOf(_block).storage(_a, _l);
}
bytes Client::codeAt(Address _a, int _block) const
{
return asOf(_block).code(_a);
}
Transaction Client::transaction(h256 _blockHash, unsigned _i) const
{
auto bl = m_bc.block(_blockHash);
RLP b(bl);
if (_i < b[1].itemCount())
return Transaction(b[1][_i].data(), CheckSignature::Range);
else
return Transaction();
}
BlockInfo Client::uncle(h256 _blockHash, unsigned _i) const
{
auto bl = m_bc.block(_blockHash);
RLP b(bl);
if (_i < b[2].itemCount())
return BlockInfo::fromHeader(b[2][_i].data());
else
return BlockInfo();
}
unsigned Client::transactionCount(h256 _blockHash) const
{
auto bl = m_bc.block(_blockHash);
RLP b(bl);
return b[1].itemCount();
}
unsigned Client::uncleCount(h256 _blockHash) const
{
auto bl = m_bc.block(_blockHash);
RLP b(bl);
return b[2].itemCount();
}
LocalisedLogEntries Client::logs(LogFilter const& _f) const
{
LocalisedLogEntries ret;
unsigned begin = min<unsigned>(m_bc.number() + 1, (unsigned)_f.latest());
unsigned end = min(m_bc.number(), min(begin, (unsigned)_f.earliest()));
unsigned m = _f.max();
unsigned s = _f.skip();
// Handle pending transactions differently as they're not on the block chain.
if (begin > m_bc.number())
{
ReadGuard l(x_stateDB);
for (unsigned i = 0; i < m_postMine.pending().size(); ++i)
{
// Might have a transaction that contains a matching log.
TransactionReceipt const& tr = m_postMine.receipt(i);
LogEntries le = _f.matches(tr);
if (le.size())
{
for (unsigned j = 0; j < le.size() && ret.size() != m; ++j)
if (s)
s--;
else
ret.insert(ret.begin(), LocalisedLogEntry(le[j], begin));
}
}
begin = m_bc.number();
}
#if ETH_DEBUG
// fill these params
unsigned skipped = 0;
unsigned falsePos = 0;
#endif
auto h = m_bc.numberHash(begin);
unsigned n = begin;
for (; ret.size() != m && n != end; n--, h = m_bc.details(h).parent)
{
#if ETH_DEBUG
int total = 0;
#endif
// check block bloom
if (_f.matches(m_bc.info(h).logBloom))
for (TransactionReceipt receipt: m_bc.receipts(h).receipts)
{
if (_f.matches(receipt.bloom()))
{
LogEntries le = _f.matches(receipt);
if (le.size())
{
#if ETH_DEBUG
total += le.size();
#endif
for (unsigned j = 0; j < le.size() && ret.size() != m; ++j)
{
if (s)
s--;
else
ret.insert(ret.begin(), LocalisedLogEntry(le[j], n));
}
}
}
#if ETH_DEBUG
if (!total)
falsePos++;
#endif
}
#if ETH_DEBUG
else
skipped++;
#endif
if (n == end)
break;
}
#if ETH_DEBUG
cdebug << (begin - n) << "searched; " << skipped << "skipped; " << falsePos << "false +ves";
#endif
return ret;
}