stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 1 | // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "dbus/dbus_statistics.h" |
| 6 | |
| 7 | #include <set> |
| 8 | |
| 9 | #include "base/logging.h" |
| 10 | #include "base/memory/scoped_ptr.h" |
| 11 | #include "base/stl_util.h" |
avi@chromium.org | ffcdb95 | 2013-06-11 16:27:01 +0900 | [diff] [blame] | 12 | #include "base/strings/stringprintf.h" |
stevenjb@chromium.org | fa0b323 | 2013-01-09 13:41:04 +0900 | [diff] [blame] | 13 | #include "base/threading/platform_thread.h" |
avi@chromium.org | 78a7e7b | 2013-06-29 00:20:02 +0900 | [diff] [blame] | 14 | #include "base/time/time.h" |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 15 | |
| 16 | namespace dbus { |
| 17 | |
| 18 | namespace { |
| 19 | |
| 20 | // Used to store dbus statistics sorted alphabetically by service, interface, |
| 21 | // then method (using std::string <). |
| 22 | struct Stat { |
| 23 | Stat(const std::string& service, |
| 24 | const std::string& interface, |
| 25 | const std::string& method) |
| 26 | : service(service), |
| 27 | interface(interface), |
| 28 | method(method), |
| 29 | sent_method_calls(0), |
| 30 | received_signals(0), |
| 31 | sent_blocking_method_calls(0) { |
| 32 | } |
| 33 | std::string service; |
| 34 | std::string interface; |
| 35 | std::string method; |
| 36 | int sent_method_calls; |
| 37 | int received_signals; |
| 38 | int sent_blocking_method_calls; |
| 39 | |
| 40 | bool Compare(const Stat& other) const { |
| 41 | if (service != other.service) |
| 42 | return service < other.service; |
| 43 | if (interface != other.interface) |
| 44 | return interface < other.interface; |
| 45 | return method < other.method; |
| 46 | } |
| 47 | |
| 48 | struct PtrCompare { |
| 49 | bool operator()(Stat* lhs, Stat* rhs) const { |
| 50 | DCHECK(lhs && rhs); |
| 51 | return lhs->Compare(*rhs); |
| 52 | } |
| 53 | }; |
| 54 | }; |
| 55 | |
| 56 | typedef std::set<Stat*, Stat::PtrCompare> StatSet; |
| 57 | |
| 58 | //------------------------------------------------------------------------------ |
| 59 | // DBusStatistics |
| 60 | |
| 61 | // Simple class for gathering DBus usage statistics. |
| 62 | class DBusStatistics { |
| 63 | public: |
stevenjb@chromium.org | fa0b323 | 2013-01-09 13:41:04 +0900 | [diff] [blame] | 64 | DBusStatistics() |
| 65 | : start_time_(base::Time::Now()), |
| 66 | origin_thread_id_(base::PlatformThread::CurrentId()) { |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | ~DBusStatistics() { |
stevenjb@chromium.org | fa0b323 | 2013-01-09 13:41:04 +0900 | [diff] [blame] | 70 | DCHECK_EQ(origin_thread_id_, base::PlatformThread::CurrentId()); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 71 | STLDeleteContainerPointers(stats_.begin(), stats_.end()); |
| 72 | } |
| 73 | |
| 74 | // Enum to specify which field in Stat to increment in AddStat |
| 75 | enum StatType { |
| 76 | TYPE_SENT_METHOD_CALLS, |
| 77 | TYPE_RECEIVED_SIGNALS, |
| 78 | TYPE_SENT_BLOCKING_METHOD_CALLS |
| 79 | }; |
| 80 | |
| 81 | // Add a call to |method| for |interface|. See also MethodCall in message.h. |
| 82 | void AddStat(const std::string& service, |
| 83 | const std::string& interface, |
| 84 | const std::string& method, |
| 85 | StatType type) { |
stevenjb@chromium.org | fa0b323 | 2013-01-09 13:41:04 +0900 | [diff] [blame] | 86 | if (base::PlatformThread::CurrentId() != origin_thread_id_) { |
posciak@chromium.org | afae899 | 2013-07-11 20:17:21 +0900 | [diff] [blame] | 87 | DVLOG(1) << "Ignoring DBusStatistics::AddStat call from thread: " |
| 88 | << base::PlatformThread::CurrentId(); |
stevenjb@chromium.org | fa0b323 | 2013-01-09 13:41:04 +0900 | [diff] [blame] | 89 | return; |
| 90 | } |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 91 | Stat* stat = GetStat(service, interface, method, true); |
| 92 | DCHECK(stat); |
| 93 | if (type == TYPE_SENT_METHOD_CALLS) |
| 94 | ++stat->sent_method_calls; |
| 95 | else if (type == TYPE_RECEIVED_SIGNALS) |
| 96 | ++stat->received_signals; |
| 97 | else if (type == TYPE_SENT_BLOCKING_METHOD_CALLS) |
| 98 | ++stat->sent_blocking_method_calls; |
| 99 | else |
| 100 | NOTREACHED(); |
| 101 | } |
| 102 | |
| 103 | // Look up the Stat entry in |stats_|. If |add_stat| is true, add a new entry |
| 104 | // if one does not already exist. |
| 105 | Stat* GetStat(const std::string& service, |
| 106 | const std::string& interface, |
| 107 | const std::string& method, |
| 108 | bool add_stat) { |
stevenjb@chromium.org | fa0b323 | 2013-01-09 13:41:04 +0900 | [diff] [blame] | 109 | DCHECK_EQ(origin_thread_id_, base::PlatformThread::CurrentId()); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 110 | scoped_ptr<Stat> stat(new Stat(service, interface, method)); |
| 111 | StatSet::iterator found = stats_.find(stat.get()); |
| 112 | if (found != stats_.end()) |
| 113 | return *found; |
| 114 | if (!add_stat) |
| 115 | return NULL; |
| 116 | found = stats_.insert(stat.release()).first; |
| 117 | return *found; |
| 118 | } |
| 119 | |
| 120 | StatSet& stats() { return stats_; } |
| 121 | base::Time start_time() { return start_time_; } |
| 122 | |
| 123 | private: |
| 124 | StatSet stats_; |
| 125 | base::Time start_time_; |
stevenjb@chromium.org | fa0b323 | 2013-01-09 13:41:04 +0900 | [diff] [blame] | 126 | base::PlatformThreadId origin_thread_id_; |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 127 | |
| 128 | DISALLOW_COPY_AND_ASSIGN(DBusStatistics); |
| 129 | }; |
| 130 | |
| 131 | DBusStatistics* g_dbus_statistics = NULL; |
| 132 | |
| 133 | } // namespace |
| 134 | |
| 135 | //------------------------------------------------------------------------------ |
| 136 | |
| 137 | namespace statistics { |
| 138 | |
| 139 | void Initialize() { |
| 140 | if (g_dbus_statistics) |
| 141 | delete g_dbus_statistics; // reset statistics |
| 142 | g_dbus_statistics = new DBusStatistics(); |
| 143 | } |
| 144 | |
| 145 | void Shutdown() { |
| 146 | delete g_dbus_statistics; |
| 147 | g_dbus_statistics = NULL; |
| 148 | } |
| 149 | |
| 150 | void AddSentMethodCall(const std::string& service, |
| 151 | const std::string& interface, |
| 152 | const std::string& method) { |
| 153 | if (!g_dbus_statistics) |
| 154 | return; |
| 155 | g_dbus_statistics->AddStat( |
| 156 | service, interface, method, DBusStatistics::TYPE_SENT_METHOD_CALLS); |
| 157 | } |
| 158 | |
| 159 | void AddReceivedSignal(const std::string& service, |
| 160 | const std::string& interface, |
| 161 | const std::string& method) { |
| 162 | if (!g_dbus_statistics) |
| 163 | return; |
| 164 | g_dbus_statistics->AddStat( |
| 165 | service, interface, method, DBusStatistics::TYPE_RECEIVED_SIGNALS); |
| 166 | } |
| 167 | |
| 168 | void AddBlockingSentMethodCall(const std::string& service, |
| 169 | const std::string& interface, |
| 170 | const std::string& method) { |
| 171 | if (!g_dbus_statistics) |
| 172 | return; |
| 173 | g_dbus_statistics->AddStat( |
| 174 | service, interface, method, |
| 175 | DBusStatistics::TYPE_SENT_BLOCKING_METHOD_CALLS); |
| 176 | } |
| 177 | |
| 178 | // NOTE: If the output format is changed, be certain to change the test |
| 179 | // expectations as well. |
| 180 | std::string GetAsString(ShowInString show, FormatString format) { |
| 181 | if (!g_dbus_statistics) |
| 182 | return "DBusStatistics not initialized."; |
| 183 | |
| 184 | const StatSet& stats = g_dbus_statistics->stats(); |
| 185 | if (stats.empty()) |
| 186 | return "No DBus calls."; |
| 187 | |
| 188 | base::TimeDelta dtime = base::Time::Now() - g_dbus_statistics->start_time(); |
| 189 | int dminutes = dtime.InMinutes(); |
| 190 | dminutes = std::max(dminutes, 1); |
| 191 | |
| 192 | std::string result; |
| 193 | int sent = 0, received = 0, sent_blocking = 0; |
| 194 | // Stats are stored in order by service, then interface, then method. |
| 195 | for (StatSet::const_iterator iter = stats.begin(); iter != stats.end(); ) { |
| 196 | StatSet::const_iterator cur_iter = iter; |
| 197 | StatSet::const_iterator next_iter = ++iter; |
| 198 | const Stat* stat = *cur_iter; |
| 199 | sent += stat->sent_method_calls; |
| 200 | received += stat->received_signals; |
| 201 | sent_blocking += stat->sent_blocking_method_calls; |
| 202 | // If this is not the last stat, and if the next stat matches the current |
| 203 | // stat, continue. |
| 204 | if (next_iter != stats.end() && |
| 205 | (*next_iter)->service == stat->service && |
| 206 | (show < SHOW_INTERFACE || (*next_iter)->interface == stat->interface) && |
| 207 | (show < SHOW_METHOD || (*next_iter)->method == stat->method)) |
| 208 | continue; |
| 209 | |
| 210 | if (!sent && !received && !sent_blocking) |
| 211 | continue; // No stats collected for this line, skip it and continue. |
| 212 | |
| 213 | // Add a line to the result and clear the counts. |
| 214 | std::string line; |
| 215 | if (show == SHOW_SERVICE) { |
| 216 | line += stat->service; |
| 217 | } else { |
| 218 | // The interface usually includes the service so don't show both. |
| 219 | line += stat->interface; |
| 220 | if (show >= SHOW_METHOD) |
| 221 | line += "." + stat->method; |
| 222 | } |
groby@chromium.org | 6b4dc5e | 2013-03-19 07:33:04 +0900 | [diff] [blame] | 223 | line += base::StringPrintf(":"); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 224 | if (sent_blocking) { |
groby@chromium.org | 6b4dc5e | 2013-03-19 07:33:04 +0900 | [diff] [blame] | 225 | line += base::StringPrintf(" Sent (BLOCKING):"); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 226 | if (format == FORMAT_TOTALS) |
groby@chromium.org | 6b4dc5e | 2013-03-19 07:33:04 +0900 | [diff] [blame] | 227 | line += base::StringPrintf(" %d", sent_blocking); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 228 | else if (format == FORMAT_PER_MINUTE) |
groby@chromium.org | 6b4dc5e | 2013-03-19 07:33:04 +0900 | [diff] [blame] | 229 | line += base::StringPrintf(" %d/min", sent_blocking / dminutes); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 230 | else if (format == FORMAT_ALL) |
groby@chromium.org | 6b4dc5e | 2013-03-19 07:33:04 +0900 | [diff] [blame] | 231 | line += base::StringPrintf(" %d (%d/min)", |
| 232 | sent_blocking, sent_blocking / dminutes); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 233 | } |
| 234 | if (sent) { |
groby@chromium.org | 6b4dc5e | 2013-03-19 07:33:04 +0900 | [diff] [blame] | 235 | line += base::StringPrintf(" Sent:"); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 236 | if (format == FORMAT_TOTALS) |
groby@chromium.org | 6b4dc5e | 2013-03-19 07:33:04 +0900 | [diff] [blame] | 237 | line += base::StringPrintf(" %d", sent); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 238 | else if (format == FORMAT_PER_MINUTE) |
groby@chromium.org | 6b4dc5e | 2013-03-19 07:33:04 +0900 | [diff] [blame] | 239 | line += base::StringPrintf(" %d/min", sent / dminutes); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 240 | else if (format == FORMAT_ALL) |
groby@chromium.org | 6b4dc5e | 2013-03-19 07:33:04 +0900 | [diff] [blame] | 241 | line += base::StringPrintf(" %d (%d/min)", sent, sent / dminutes); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 242 | } |
| 243 | if (received) { |
groby@chromium.org | 6b4dc5e | 2013-03-19 07:33:04 +0900 | [diff] [blame] | 244 | line += base::StringPrintf(" Received:"); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 245 | if (format == FORMAT_TOTALS) |
groby@chromium.org | 6b4dc5e | 2013-03-19 07:33:04 +0900 | [diff] [blame] | 246 | line += base::StringPrintf(" %d", received); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 247 | else if (format == FORMAT_PER_MINUTE) |
groby@chromium.org | 6b4dc5e | 2013-03-19 07:33:04 +0900 | [diff] [blame] | 248 | line += base::StringPrintf(" %d/min", received / dminutes); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 249 | else if (format == FORMAT_ALL) |
groby@chromium.org | 6b4dc5e | 2013-03-19 07:33:04 +0900 | [diff] [blame] | 250 | line += base::StringPrintf( |
| 251 | " %d (%d/min)", received, received / dminutes); |
stevenjb@chromium.org | 3199bd1 | 2012-11-15 06:03:29 +0900 | [diff] [blame] | 252 | } |
| 253 | result += line + "\n"; |
| 254 | sent = 0; |
| 255 | sent_blocking = 0; |
| 256 | received = 0; |
| 257 | } |
| 258 | return result; |
| 259 | } |
| 260 | |
| 261 | namespace testing { |
| 262 | |
| 263 | bool GetCalls(const std::string& service, |
| 264 | const std::string& interface, |
| 265 | const std::string& method, |
| 266 | int* sent, |
| 267 | int* received, |
| 268 | int* blocking) { |
| 269 | if (!g_dbus_statistics) |
| 270 | return false; |
| 271 | Stat* stat = g_dbus_statistics->GetStat(service, interface, method, false); |
| 272 | if (!stat) |
| 273 | return false; |
| 274 | *sent = stat->sent_method_calls; |
| 275 | *received = stat->received_signals; |
| 276 | *blocking = stat->sent_blocking_method_calls; |
| 277 | return true; |
| 278 | } |
| 279 | |
| 280 | } // namespace testing |
| 281 | |
| 282 | } // namespace statistics |
| 283 | } // namespace dbus |