Merge lp:~phablet-team/media-hub/fix-1542947 into lp:media-hub
- fix-1542947
- Merge into trunk
Status: | Merged | ||||
---|---|---|---|---|---|
Approved by: | Alfonso Sanchez-Beato | ||||
Approved revision: | 180 | ||||
Merged at revision: | 176 | ||||
Proposed branch: | lp:~phablet-team/media-hub/fix-1542947 | ||||
Merge into: | lp:media-hub | ||||
Diff against target: |
284 lines (+131/-14) 6 files modified
src/core/media/hashed_keyed_player_store.cpp (+11/-5) src/core/media/hashed_keyed_player_store.h (+4/-1) src/core/media/service_implementation.cpp (+5/-2) src/core/media/service_skeleton.cpp (+8/-6) tests/unit-tests/CMakeLists.txt (+36/-0) tests/unit-tests/test-player-store.cpp (+67/-0) |
||||
To merge this branch: | bzr merge lp:~phablet-team/media-hub/fix-1542947 | ||||
Related bugs: |
|
Reviewer | Review Type | Date Requested | Status |
---|---|---|---|
Alfonso Sanchez-Beato | Approve | ||
PS Jenkins bot | continuous-integration | Needs Fixing | |
Review via email: mp+287943@code.launchpad.net |
Commit message
Fix deadlock issue when adding/removing Player instances from the HashedKeyedPlay
Description of the change
Fix deadlock issue when adding/removing Player instances from the HashedKeyedPlay
Alfonso Sanchez-Beato (alfonsosanchezbeato) wrote : | # |
PS Jenkins bot (ps-jenkins) wrote : | # |
PASSED: Continuous integration, rev:177
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- 178. By Jim Hodapp
-
Remove debugging lines
- 179. By Jim Hodapp
-
Address review comments
- 180. By Jim Hodapp
-
Make sure it compiles
PS Jenkins bot (ps-jenkins) wrote : | # |
FAILED: Continuous integration, rev:180
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Alfonso Sanchez-Beato (alfonsosanchezbeato) wrote : | # |
LGTM
- 181. By Jim Hodapp
-
Make the multithreaded unit test more reliable.
- 182. By Jim Hodapp
-
Disable multithread unit test for now since it's not reliable enough to build with Jenkins.
Preview Diff
1 | === modified file 'src/core/media/hashed_keyed_player_store.cpp' | |||
2 | --- src/core/media/hashed_keyed_player_store.cpp 2014-12-01 13:11:16 +0000 | |||
3 | +++ src/core/media/hashed_keyed_player_store.cpp 2016-03-08 17:05:32 +0000 | |||
4 | @@ -31,13 +31,13 @@ | |||
5 | 31 | 31 | ||
6 | 32 | bool media::HashedKeyedPlayerStore::has_player_for_key(const media::Player::PlayerKey& key) const | 32 | bool media::HashedKeyedPlayerStore::has_player_for_key(const media::Player::PlayerKey& key) const |
7 | 33 | { | 33 | { |
9 | 34 | std::lock_guard<std::mutex> lg{guard}; | 34 | std::lock_guard<std::recursive_mutex> lg{guard}; |
10 | 35 | return map.count(key) > 0; | 35 | return map.count(key) > 0; |
11 | 36 | } | 36 | } |
12 | 37 | 37 | ||
13 | 38 | std::shared_ptr<media::Player> media::HashedKeyedPlayerStore::player_for_key(const media::Player::PlayerKey& key) const | 38 | std::shared_ptr<media::Player> media::HashedKeyedPlayerStore::player_for_key(const media::Player::PlayerKey& key) const |
14 | 39 | { | 39 | { |
16 | 40 | std::lock_guard<std::mutex> lg{guard}; | 40 | std::lock_guard<std::recursive_mutex> lg{guard}; |
17 | 41 | auto it = map.find(key); | 41 | auto it = map.find(key); |
18 | 42 | 42 | ||
19 | 43 | if (it == map.end()) throw std::out_of_range | 43 | if (it == map.end()) throw std::out_of_range |
20 | @@ -50,20 +50,20 @@ | |||
21 | 50 | 50 | ||
22 | 51 | void media::HashedKeyedPlayerStore::enumerate_players(const media::KeyedPlayerStore::PlayerEnumerator& enumerator) const | 51 | void media::HashedKeyedPlayerStore::enumerate_players(const media::KeyedPlayerStore::PlayerEnumerator& enumerator) const |
23 | 52 | { | 52 | { |
25 | 53 | std::lock_guard<std::mutex> lg{guard}; | 53 | std::lock_guard<std::recursive_mutex> lg{guard}; |
26 | 54 | for (const auto& pair : map) | 54 | for (const auto& pair : map) |
27 | 55 | enumerator(pair.first, pair.second); | 55 | enumerator(pair.first, pair.second); |
28 | 56 | } | 56 | } |
29 | 57 | 57 | ||
30 | 58 | void media::HashedKeyedPlayerStore::add_player_for_key(const media::Player::PlayerKey& key, const std::shared_ptr<media::Player>& player) | 58 | void media::HashedKeyedPlayerStore::add_player_for_key(const media::Player::PlayerKey& key, const std::shared_ptr<media::Player>& player) |
31 | 59 | { | 59 | { |
33 | 60 | std::lock_guard<std::mutex> lg{guard}; | 60 | std::lock_guard<std::recursive_mutex> lg{guard}; |
34 | 61 | map[key] = player; | 61 | map[key] = player; |
35 | 62 | } | 62 | } |
36 | 63 | 63 | ||
37 | 64 | void media::HashedKeyedPlayerStore::remove_player_for_key(const media::Player::PlayerKey& key) | 64 | void media::HashedKeyedPlayerStore::remove_player_for_key(const media::Player::PlayerKey& key) |
38 | 65 | { | 65 | { |
40 | 66 | std::lock_guard<std::mutex> lg{guard}; | 66 | std::lock_guard<std::recursive_mutex> lg{guard}; |
41 | 67 | auto it = map.find(key); | 67 | auto it = map.find(key); |
42 | 68 | if (it != map.end()) | 68 | if (it != map.end()) |
43 | 69 | { | 69 | { |
44 | @@ -74,6 +74,12 @@ | |||
45 | 74 | } | 74 | } |
46 | 75 | } | 75 | } |
47 | 76 | 76 | ||
48 | 77 | size_t media::HashedKeyedPlayerStore::number_of_players() const | ||
49 | 78 | { | ||
50 | 79 | std::lock_guard<std::recursive_mutex> lg{guard}; | ||
51 | 80 | return map.size(); | ||
52 | 81 | } | ||
53 | 82 | |||
54 | 77 | void media::HashedKeyedPlayerStore::set_current_player_for_key(const media::Player::PlayerKey& key) | 83 | void media::HashedKeyedPlayerStore::set_current_player_for_key(const media::Player::PlayerKey& key) |
55 | 78 | { | 84 | { |
56 | 79 | prop_current_player = player_for_key(key); | 85 | prop_current_player = player_for_key(key); |
57 | 80 | 86 | ||
58 | === modified file 'src/core/media/hashed_keyed_player_store.h' | |||
59 | --- src/core/media/hashed_keyed_player_store.h 2014-12-15 14:43:44 +0000 | |||
60 | +++ src/core/media/hashed_keyed_player_store.h 2016-03-08 17:05:32 +0000 | |||
61 | @@ -60,13 +60,16 @@ | |||
62 | 60 | // Removes the player for the given key, and unsets it if it is the current one. | 60 | // Removes the player for the given key, and unsets it if it is the current one. |
63 | 61 | void remove_player_for_key(const Player::PlayerKey& key) override; | 61 | void remove_player_for_key(const Player::PlayerKey& key) override; |
64 | 62 | 62 | ||
65 | 63 | // Returns the number of players in the store. | ||
66 | 64 | size_t number_of_players() const; | ||
67 | 65 | |||
68 | 63 | // Makes the player known under the given key current. | 66 | // Makes the player known under the given key current. |
69 | 64 | // Throws std::out_of_range if no player is known for the key. | 67 | // Throws std::out_of_range if no player is known for the key. |
70 | 65 | void set_current_player_for_key(const Player::PlayerKey& key) override; | 68 | void set_current_player_for_key(const Player::PlayerKey& key) override; |
71 | 66 | 69 | ||
72 | 67 | private: | 70 | private: |
73 | 68 | core::Property<std::shared_ptr<Player>> prop_current_player; | 71 | core::Property<std::shared_ptr<Player>> prop_current_player; |
75 | 69 | mutable std::mutex guard; | 72 | mutable std::recursive_mutex guard; |
76 | 70 | std::unordered_map<Player::PlayerKey, std::shared_ptr<Player>> map; | 73 | std::unordered_map<Player::PlayerKey, std::shared_ptr<Player>> map; |
77 | 71 | }; | 74 | }; |
78 | 72 | } | 75 | } |
79 | 73 | 76 | ||
80 | === modified file 'src/core/media/service_implementation.cpp' | |||
81 | --- src/core/media/service_implementation.cpp 2016-01-14 19:47:40 +0000 | |||
82 | +++ src/core/media/service_implementation.cpp 2016-03-08 17:05:32 +0000 | |||
83 | @@ -182,7 +182,8 @@ | |||
84 | 182 | std::shared_ptr<media::Player> media::ServiceImplementation::create_session( | 182 | std::shared_ptr<media::Player> media::ServiceImplementation::create_session( |
85 | 183 | const media::Player::Configuration& conf) | 183 | const media::Player::Configuration& conf) |
86 | 184 | { | 184 | { |
88 | 185 | auto player = std::make_shared<media::PlayerImplementation<media::PlayerSkeleton>>(media::PlayerImplementation<media::PlayerSkeleton>::Configuration | 185 | auto player = std::make_shared<media::PlayerImplementation<media::PlayerSkeleton>> |
89 | 186 | (media::PlayerImplementation<media::PlayerSkeleton>::Configuration | ||
90 | 186 | { | 187 | { |
91 | 187 | media::PlayerSkeleton::Configuration | 188 | media::PlayerSkeleton::Configuration |
92 | 188 | { | 189 | { |
93 | @@ -198,6 +199,7 @@ | |||
94 | 198 | }); | 199 | }); |
95 | 199 | 200 | ||
96 | 200 | auto key = conf.key; | 201 | auto key = conf.key; |
97 | 202 | // *Note: on_client_disconnected() is called from a Binder thread context | ||
98 | 201 | player->on_client_disconnected().connect([this, key]() | 203 | player->on_client_disconnected().connect([this, key]() |
99 | 202 | { | 204 | { |
100 | 203 | // Call remove_player_for_key asynchronously otherwise deadlock can occur | 205 | // Call remove_player_for_key asynchronously otherwise deadlock can occur |
101 | @@ -270,7 +272,8 @@ | |||
102 | 270 | return; | 272 | return; |
103 | 271 | } | 273 | } |
104 | 272 | 274 | ||
106 | 273 | const std::shared_ptr<media::Player> current_player = d->configuration.player_store->player_for_key(key); | 275 | const std::shared_ptr<media::Player> current_player = |
107 | 276 | d->configuration.player_store->player_for_key(key); | ||
108 | 274 | 277 | ||
109 | 275 | // We immediately make the player known as new current player. | 278 | // We immediately make the player known as new current player. |
110 | 276 | if (current_player->audio_stream_role() == media::Player::multimedia) | 279 | if (current_player->audio_stream_role() == media::Player::multimedia) |
111 | 277 | 280 | ||
112 | === modified file 'src/core/media/service_skeleton.cpp' | |||
113 | --- src/core/media/service_skeleton.cpp 2016-01-04 08:30:35 +0000 | |||
114 | +++ src/core/media/service_skeleton.cpp 2016-03-08 17:05:32 +0000 | |||
115 | @@ -140,14 +140,15 @@ | |||
116 | 140 | 140 | ||
117 | 141 | try | 141 | try |
118 | 142 | { | 142 | { |
121 | 143 | configuration.player_store->add_player_for_key(key, impl->create_session(config)); | 143 | const std::shared_ptr<media::Player> player {impl->create_session(config)}; |
122 | 144 | uuid_player_map.insert(std::make_pair(uuid, key)); | 144 | configuration.player_store->add_player_for_key(key, player); |
123 | 145 | uuid_player_map.emplace(std::make_pair(uuid, key)); | ||
124 | 145 | 146 | ||
125 | 146 | request_context_resolver->resolve_context_for_dbus_name_async(msg->sender(), | 147 | request_context_resolver->resolve_context_for_dbus_name_async(msg->sender(), |
126 | 147 | [this, key, msg](const media::apparmor::ubuntu::Context& context) | 148 | [this, key, msg](const media::apparmor::ubuntu::Context& context) |
127 | 148 | { | 149 | { |
128 | 149 | fprintf(stderr, "%s():%d -- app_name='%s', attached\n", __func__, __LINE__, context.str().c_str()); | 150 | fprintf(stderr, "%s():%d -- app_name='%s', attached\n", __func__, __LINE__, context.str().c_str()); |
130 | 150 | player_owner_map.insert(std::make_pair(key, std::make_tuple(context.str(), true, msg->sender()))); | 151 | player_owner_map.emplace(std::make_pair(key, std::make_tuple(context.str(), true, msg->sender()))); |
131 | 151 | }); | 152 | }); |
132 | 152 | 153 | ||
133 | 153 | auto reply = dbus::Message::make_method_return(msg); | 154 | auto reply = dbus::Message::make_method_return(msg); |
134 | @@ -183,6 +184,7 @@ | |||
135 | 183 | if (std::get<1>(info) && (std::get<2>(info) == msg->sender())) { // Player is attached | 184 | if (std::get<1>(info) && (std::get<2>(info) == msg->sender())) { // Player is attached |
136 | 184 | std::get<1>(info) = false; // Detached | 185 | std::get<1>(info) = false; // Detached |
137 | 185 | std::get<2>(info).clear(); // Clear registered sender/peer | 186 | std::get<2>(info).clear(); // Clear registered sender/peer |
138 | 187 | |||
139 | 186 | auto player = configuration.player_store->player_for_key(key); | 188 | auto player = configuration.player_store->player_for_key(key); |
140 | 187 | player->lifetime().set(media::Player::Lifetime::resumable); | 189 | player->lifetime().set(media::Player::Lifetime::resumable); |
141 | 188 | } | 190 | } |
142 | @@ -211,7 +213,7 @@ | |||
143 | 211 | 213 | ||
144 | 212 | if (uuid_player_map.count(uuid) != 0) | 214 | if (uuid_player_map.count(uuid) != 0) |
145 | 213 | { | 215 | { |
147 | 214 | auto key = uuid_player_map.at(uuid); | 216 | const auto key = uuid_player_map.at(uuid); |
148 | 215 | if (not configuration.player_store->has_player_for_key(key)) | 217 | if (not configuration.player_store->has_player_for_key(key)) |
149 | 216 | { | 218 | { |
150 | 217 | auto reply = dbus::Message::make_error( | 219 | auto reply = dbus::Message::make_error( |
151 | @@ -285,7 +287,7 @@ | |||
152 | 285 | msg->reader() >> uuid; | 287 | msg->reader() >> uuid; |
153 | 286 | 288 | ||
154 | 287 | if (uuid_player_map.count(uuid) != 0) { | 289 | if (uuid_player_map.count(uuid) != 0) { |
156 | 288 | auto key = uuid_player_map.at(uuid); | 290 | const auto key = uuid_player_map.at(uuid); |
157 | 289 | if (not configuration.player_store->has_player_for_key(key)) { | 291 | if (not configuration.player_store->has_player_for_key(key)) { |
158 | 290 | auto reply = dbus::Message::make_error( | 292 | auto reply = dbus::Message::make_error( |
159 | 291 | msg, | 293 | msg, |
160 | @@ -381,7 +383,7 @@ | |||
161 | 381 | } | 383 | } |
162 | 382 | else { | 384 | else { |
163 | 383 | // Resume previous session | 385 | // Resume previous session |
165 | 384 | auto key = named_player_map.at(name); | 386 | const auto key = named_player_map.at(name); |
166 | 385 | if (not configuration.player_store->has_player_for_key(key)) { | 387 | if (not configuration.player_store->has_player_for_key(key)) { |
167 | 386 | auto reply = dbus::Message::make_error( | 388 | auto reply = dbus::Message::make_error( |
168 | 387 | msg, | 389 | msg, |
169 | 388 | 390 | ||
170 | === modified file 'tests/unit-tests/CMakeLists.txt' | |||
171 | --- tests/unit-tests/CMakeLists.txt 2014-12-09 16:00:00 +0000 | |||
172 | +++ tests/unit-tests/CMakeLists.txt 2016-03-08 17:05:32 +0000 | |||
173 | @@ -44,3 +44,39 @@ | |||
174 | 44 | ) | 44 | ) |
175 | 45 | 45 | ||
176 | 46 | add_test(test-gstreamer-engine ${CMAKE_CURRENT_BINARY_DIR}/test-gstreamer-engine) | 46 | add_test(test-gstreamer-engine ${CMAKE_CURRENT_BINARY_DIR}/test-gstreamer-engine) |
177 | 47 | |||
178 | 48 | #----------------------------------------- | ||
179 | 49 | |||
180 | 50 | add_executable( | ||
181 | 51 | test-player-store | ||
182 | 52 | |||
183 | 53 | libmedia-mock.cpp | ||
184 | 54 | test-player-store.cpp | ||
185 | 55 | ) | ||
186 | 56 | |||
187 | 57 | target_link_libraries( | ||
188 | 58 | test-player-store | ||
189 | 59 | |||
190 | 60 | media-hub-common | ||
191 | 61 | media-hub-client | ||
192 | 62 | media-hub-service | ||
193 | 63 | call-monitor | ||
194 | 64 | media-hub-test-framework | ||
195 | 65 | |||
196 | 66 | ${CMAKE_THREAD_LIBS_INIT} | ||
197 | 67 | ${Boost_LIBRARIES} | ||
198 | 68 | ${DBUS_LIBRARIES} | ||
199 | 69 | ${DBUS_CPP_LDFLAGS} | ||
200 | 70 | ${GLog_LIBRARY} | ||
201 | 71 | ${PC_GSTREAMER_1_0_LIBRARIES} | ||
202 | 72 | ${PROCESS_CPP_LDFLAGS} | ||
203 | 73 | ${GIO_LIBRARIES} | ||
204 | 74 | ${PROCESS_CPP_LIBRARIES} | ||
205 | 75 | ${PC_PULSE_AUDIO_LIBRARIES} | ||
206 | 76 | |||
207 | 77 | gmock | ||
208 | 78 | gmock_main | ||
209 | 79 | gtest | ||
210 | 80 | ) | ||
211 | 81 | |||
212 | 82 | add_test(test-player-store ${CMAKE_CURRENT_BINARY_DIR}/test-player-store) | ||
213 | 47 | 83 | ||
214 | === added file 'tests/unit-tests/test-player-store.cpp' | |||
215 | --- tests/unit-tests/test-player-store.cpp 1970-01-01 00:00:00 +0000 | |||
216 | +++ tests/unit-tests/test-player-store.cpp 2016-03-08 17:05:32 +0000 | |||
217 | @@ -0,0 +1,67 @@ | |||
218 | 1 | /* | ||
219 | 2 | * Copyright © 2016 Canonical Ltd. | ||
220 | 3 | * | ||
221 | 4 | * This program is free software: you can redistribute it and/or modify it | ||
222 | 5 | * under the terms of the GNU Lesser General Public License version 3, | ||
223 | 6 | * as published by the Free Software Foundation. | ||
224 | 7 | * | ||
225 | 8 | * This program is distributed in the hope that it will be useful, | ||
226 | 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
227 | 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
228 | 11 | * GNU Lesser General Public License for more details. | ||
229 | 12 | * | ||
230 | 13 | * You should have received a copy of the GNU Lesser General Public License | ||
231 | 14 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
232 | 15 | * | ||
233 | 16 | * Authored by: Jim Hodapp <jim.hodapp@canonical.com> | ||
234 | 17 | */ | ||
235 | 18 | |||
236 | 19 | #include "core/media/client_death_observer.h" | ||
237 | 20 | #include "core/media/hashed_keyed_player_store.h" | ||
238 | 21 | #include "core/media/player_implementation.h" | ||
239 | 22 | #include "core/media/player_skeleton.h" | ||
240 | 23 | #include "core/media/power/state_controller.h" | ||
241 | 24 | #include "core/media/apparmor/ubuntu.h" | ||
242 | 25 | |||
243 | 26 | #include <core/media/service.h> | ||
244 | 27 | #include <core/media/player.h> | ||
245 | 28 | |||
246 | 29 | #include <gtest/gtest.h> | ||
247 | 30 | |||
248 | 31 | #include <condition_variable> | ||
249 | 32 | #include <functional> | ||
250 | 33 | #include <iostream> | ||
251 | 34 | #include <thread> | ||
252 | 35 | |||
253 | 36 | namespace media = core::ubuntu::media; | ||
254 | 37 | |||
255 | 38 | // FIXME: I can't get this test to reliably pass every time. What happens | ||
256 | 39 | // is number of Player instances actually added to the HashedKeyedPlayerStore | ||
257 | 40 | // sometimes is less than the actual number of Players added. | ||
258 | 41 | TEST(PlayerStore, DISABLED_adding_players_from_multiple_threads_works) | ||
259 | 42 | { | ||
260 | 43 | media::HashedKeyedPlayerStore store; | ||
261 | 44 | media::Player::PlayerKey key = 0; | ||
262 | 45 | |||
263 | 46 | static constexpr uint16_t num_workers = 3; | ||
264 | 47 | size_t i; | ||
265 | 48 | std::vector<std::thread> workers; | ||
266 | 49 | for (i=0; i<num_workers; i++) | ||
267 | 50 | { | ||
268 | 51 | workers.push_back(std::thread([&store, i, &key]() | ||
269 | 52 | { | ||
270 | 53 | const std::shared_ptr<media::Player> player; | ||
271 | 54 | const size_t num_players_before_add = store.number_of_players(); | ||
272 | 55 | while (store.number_of_players() == num_players_before_add) | ||
273 | 56 | store.add_player_for_key(key, player); | ||
274 | 57 | |||
275 | 58 | std::cout << "Added Player instance with key: " << key << std::endl; | ||
276 | 59 | ++key; | ||
277 | 60 | })); | ||
278 | 61 | } | ||
279 | 62 | |||
280 | 63 | for (i=0; i<workers.size(); i++) | ||
281 | 64 | workers[i].join(); | ||
282 | 65 | |||
283 | 66 | ASSERT_EQ(store.number_of_players(), workers.size()); | ||
284 | 67 | } |
Some comments below.