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
|
#include "indexer/mwm_set.hpp"
#include "indexer/scales.hpp"
#include "defines.hpp"
#include "base/assert.hpp"
#include "base/logging.hpp"
#include "base/stl_add.hpp"
#include "std/algorithm.hpp"
#include "std/sstream.hpp"
using platform::CountryFile;
using platform::LocalCountryFile;
MwmInfo::MwmInfo() : m_minScale(0), m_maxScale(0), m_status(STATUS_DEREGISTERED), m_numRefs(0) {}
MwmInfo::MwmTypeT MwmInfo::GetType() const
{
if (m_minScale > 0)
return COUNTRY;
if (m_maxScale == scales::GetUpperWorldScale())
return WORLD;
ASSERT_EQUAL(m_maxScale, scales::GetUpperScale(), ());
return COASTS;
}
string DebugPrint(MwmSet::MwmId const & id)
{
ostringstream ss;
if (id.m_info.get())
ss << "MwmId [" << id.m_info->GetCountryName() << "]";
else
ss << "MwmId [invalid]";
return ss.str();
}
MwmSet::MwmHandle::MwmHandle() : m_mwmSet(nullptr), m_mwmId(), m_value(nullptr) {}
MwmSet::MwmHandle::MwmHandle(MwmSet & mwmSet, MwmId const & mwmId, TMwmValuePtr value)
: m_mwmSet(&mwmSet), m_mwmId(mwmId), m_value(value)
{
}
MwmSet::MwmHandle::MwmHandle(MwmHandle && handle)
: m_mwmSet(handle.m_mwmSet), m_mwmId(handle.m_mwmId), m_value(handle.m_value)
{
handle.m_mwmSet = nullptr;
handle.m_mwmId.Reset();
handle.m_value = nullptr;
}
MwmSet::MwmHandle::~MwmHandle()
{
if (m_mwmSet && m_value)
m_mwmSet->UnlockValue(m_mwmId, m_value);
}
shared_ptr<MwmInfo> const & MwmSet::MwmHandle::GetInfo() const
{
ASSERT(IsAlive(), ("MwmHandle is not active."));
return m_mwmId.GetInfo();
}
MwmSet::MwmHandle & MwmSet::MwmHandle::operator=(MwmHandle && handle)
{
swap(m_mwmSet, handle.m_mwmSet);
swap(m_mwmId, handle.m_mwmId);
swap(m_value, handle.m_value);
return *this;
}
MwmSet::MwmId MwmSet::GetMwmIdByCountryFileImpl(CountryFile const & countryFile) const
{
string const & name = countryFile.GetNameWithoutExt();
ASSERT(!name.empty(), ());
auto const it = m_info.find(name);
if (it == m_info.cend() || it->second.empty())
return MwmId();
return MwmId(it->second.back());
}
pair<MwmSet::MwmHandle, MwmSet::RegResult> MwmSet::Register(LocalCountryFile const & localFile)
{
lock_guard<mutex> lock(m_lock);
CountryFile const & countryFile = localFile.GetCountryFile();
MwmId const id = GetMwmIdByCountryFileImpl(countryFile);
if (!id.IsAlive())
return RegisterImpl(localFile);
shared_ptr<MwmInfo> info = id.GetInfo();
// Deregister old mwm for the country.
if (info->GetVersion() < localFile.GetVersion())
{
DeregisterImpl(id);
return RegisterImpl(localFile);
}
string const name = countryFile.GetNameWithoutExt();
// Update the status of the mwm with the same version.
if (info->GetVersion() == localFile.GetVersion())
{
LOG(LINFO, ("Updating already registered mwm:", name));
info->SetStatus(MwmInfo::STATUS_REGISTERED);
info->m_file = localFile;
return make_pair(GetLock(id), RegResult::VersionAlreadyExists);
}
LOG(LWARNING, ("Trying to add too old (", localFile.GetVersion(), ") mwm (", name,
"), current version:", info->GetVersion()));
return make_pair(MwmHandle(), RegResult::VersionTooOld);
}
pair<MwmSet::MwmHandle, MwmSet::RegResult> MwmSet::RegisterImpl(LocalCountryFile const & localFile)
{
// This function can throw an exception for a bad mwm file.
shared_ptr<MwmInfo> info(CreateInfo(localFile));
if (!info)
return make_pair(MwmHandle(), RegResult::UnsupportedFileFormat);
info->m_file = localFile;
info->SetStatus(MwmInfo::STATUS_REGISTERED);
m_info[localFile.GetCountryName()].push_back(info);
return make_pair(GetLock(MwmId(info)), RegResult::Success);
}
bool MwmSet::DeregisterImpl(MwmId const & id)
{
if (!id.IsAlive())
return false;
shared_ptr<MwmInfo> const & info = id.GetInfo();
if (info->m_numRefs == 0)
{
info->SetStatus(MwmInfo::STATUS_DEREGISTERED);
vector<shared_ptr<MwmInfo>> & infos = m_info[info->GetCountryName()];
infos.erase(remove(infos.begin(), infos.end(), info), infos.end());
OnMwmDeregistered(info->GetLocalFile());
return true;
}
info->SetStatus(MwmInfo::STATUS_MARKED_TO_DEREGISTER);
return false;
}
bool MwmSet::Deregister(CountryFile const & countryFile)
{
lock_guard<mutex> lock(m_lock);
return DeregisterImpl(countryFile);
}
bool MwmSet::DeregisterImpl(CountryFile const & countryFile)
{
MwmId const id = GetMwmIdByCountryFileImpl(countryFile);
if (!id.IsAlive())
return false;
bool const deregistered = DeregisterImpl(id);
ClearCache(id);
return deregistered;
}
bool MwmSet::IsLoaded(CountryFile const & countryFile) const
{
lock_guard<mutex> lock(m_lock);
MwmId const id = GetMwmIdByCountryFileImpl(countryFile);
return id.IsAlive() && id.GetInfo()->IsRegistered();
}
void MwmSet::GetMwmsInfo(vector<shared_ptr<MwmInfo>> & info) const
{
lock_guard<mutex> lock(m_lock);
info.clear();
info.reserve(m_info.size());
for (auto const & p : m_info)
{
if (!p.second.empty())
info.push_back(p.second.back());
}
}
MwmSet::TMwmValuePtr MwmSet::LockValue(MwmId const & id)
{
lock_guard<mutex> lock(m_lock);
return LockValueImpl(id);
}
MwmSet::TMwmValuePtr MwmSet::LockValueImpl(MwmId const & id)
{
CHECK(id.IsAlive(), (id));
shared_ptr<MwmInfo> info = id.GetInfo();
// It's better to return valid "value pointer" even for "out-of-date" files,
// because they can be locked for a long time by other algos.
//if (!info->IsUpToDate())
// return TMwmValueBasePtr();
++info->m_numRefs;
// Search in cache.
for (auto it = m_cache.begin(); it != m_cache.end(); ++it)
{
if (it->first == id)
{
TMwmValuePtr result = it->second;
m_cache.erase(it);
return result;
}
}
return TMwmValuePtr(CreateValue(*info));
}
void MwmSet::UnlockValue(MwmId const & id, TMwmValuePtr p)
{
lock_guard<mutex> lock(m_lock);
UnlockValueImpl(id, p);
}
void MwmSet::UnlockValueImpl(MwmId const & id, TMwmValuePtr p)
{
ASSERT(id.IsAlive() && p, (id));
if (!id.IsAlive() || !p)
return;
shared_ptr<MwmInfo> const & info = id.GetInfo();
ASSERT_GREATER(info->m_numRefs, 0, ());
--info->m_numRefs;
if (info->m_numRefs == 0 && info->GetStatus() == MwmInfo::STATUS_MARKED_TO_DEREGISTER)
VERIFY(DeregisterImpl(id), ());
if (info->IsUpToDate())
{
/// @todo Probably, it's better to store only "unique by id" free caches here.
/// But it's no obvious if we have many threads working with the single mwm.
m_cache.push_back(make_pair(id, p));
if (m_cache.size() > m_cacheSize)
{
ASSERT_EQUAL(m_cache.size(), m_cacheSize + 1, ());
auto p = m_cache.front();
m_cache.pop_front();
delete p.second;
}
}
}
void MwmSet::Clear()
{
lock_guard<mutex> lock(m_lock);
ClearCacheImpl(m_cache.begin(), m_cache.end());
m_info.clear();
}
void MwmSet::ClearCache()
{
lock_guard<mutex> lock(m_lock);
ClearCacheImpl(m_cache.begin(), m_cache.end());
}
MwmSet::MwmId MwmSet::GetMwmIdByCountryFile(CountryFile const & countryFile) const
{
lock_guard<mutex> lock(m_lock);
MwmId const id = GetMwmIdByCountryFileImpl(countryFile);
ASSERT(id.IsAlive(), ("Can't get an mwm's (", countryFile.GetNameWithoutExt(), ") identifier."));
return id;
}
MwmSet::MwmHandle MwmSet::GetMwmHandleByCountryFile(CountryFile const & countryFile)
{
lock_guard<mutex> lock(m_lock);
return GetMwmHandleByIdImpl(GetMwmIdByCountryFileImpl(countryFile));
}
MwmSet::MwmHandle MwmSet::GetMwmHandleById(MwmId const & id)
{
lock_guard<mutex> lock(m_lock);
return GetMwmHandleByIdImpl(id);
}
MwmSet::MwmHandle MwmSet::GetMwmHandleByIdImpl(MwmId const & id)
{
TMwmValuePtr value(nullptr);
if (id.IsAlive())
value = LockValueImpl(id);
return MwmHandle(*this, id, value);
}
void MwmSet::ClearCacheImpl(CacheType::iterator beg, CacheType::iterator end)
{
for (auto i = beg; i != end; ++i)
delete i->second;
m_cache.erase(beg, end);
}
void MwmSet::ClearCache(MwmId const & id)
{
ClearCacheImpl(RemoveIfKeepValid(m_cache.begin(), m_cache.end(),
[&id] (pair<MwmSet::MwmId, MwmSet::TMwmValuePtr> const & p)
{
return (p.first == id);
}),
m_cache.end());
}
string DebugPrint(MwmSet::RegResult result)
{
switch (result)
{
case MwmSet::RegResult::Success:
return "Success";
case MwmSet::RegResult::VersionAlreadyExists:
return "VersionAlreadyExists";
case MwmSet::RegResult::VersionTooOld:
return "VersionTooOld";
case MwmSet::RegResult::BadFile:
return "BadFile";
case MwmSet::RegResult::UnsupportedFileFormat:
return "UnsupportedFileFormat";
}
}
|