Implement FlutterTizenEngine spawn#20
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Signed-off-by: swan.seo <swan.seo@samsung.com>
JSUYA
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Mar 6, 2026
Based on BT, two issues can be expected.
First, a problem could occur in vconf when calling the setting getter while the system is not fully initialized. Alternatively, a deadlock could occur on the same conf when calling the setting getter after registering the changed callback.
Since this issue did not occur after a reboot or subsequent routines, it is likely a timing issue due to the callback rather than an initialization issue. Therefore, the problem can be prevented by calling the setting getter before registering the changed callback.
```
crash dump
(gdb) bt
#0 0x0000ffff94a13524 in __GI___poll (fds=0xfffff49d3830, nfds=1,
timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:41
#1 0x0000ffff938f44e8 in ?? () from /lib64/libbuxton2.so.1
flutter-tizen#2 0x0000ffff938f6ac0 in buxton_get_value_sync () from /lib64/libbuxton2.so.1
flutter-tizen#3 0x0000ffff93703af8 in ?? () from /lib64/libvconf.so.0
flutter-tizen#4 0x0000ffff937052c4 in vconf_get_int () from /lib64/libvconf.so.0
flutter-tizen#5 0x0000ffff8c1b9604 in ?? () from /lib64/libcapi-system-system-settings.so.0
flutter-tizen#6 0x0000ffff8c1b390c in system_settings_get_value_int ()
from /lib64/libcapi-system-system-settings.so.0
flutter-tizen#7 0x0000ffff8c2ec3d0 in ?? ()
from /usr/apps/org.tizen.homescreen/bin/../lib/libflutter_tizen_common.so
flutter-tizen#8 0x0000ffff8c2ec330 in ?? ()
from /usr/apps/org.tizen.homescreen/bin/../lib/libflutter_tizen_common.so
flutter-tizen#9 0x0000ffff8c2f538c in ?? ()
from /usr/apps/org.tizen.homescreen/bin/../lib/libflutter_tizen_common.so
flutter-tizen#10 0x0000ffff8c2f3d70 in FlutterDesktopViewCreateFromNewWindow ()
from /usr/apps/org.tizen.homescreen/bin/../lib/libflutter_tizen_common.so
flutter-tizen#11 0x0000ffff94fd8ff4 in ?? () from /usr/apps/org.tizen.homescreen/bin/runner
flutter-tizen#12 0x0000ffff94fd8df0 in ?? () from /usr/apps/org.tizen.homescreen/bin/runner
flutter-tizen#13 0x0000ffff918b3df8 in ?? () from /usr/lib64/libcapi-appfw-application.so.0
flutter-tizen#14 0x0000ffff919efc6c in tizen_cpp::AppCoreBase::Init(int, char**) ()
from /lib64/libapp-core-cpp.so.1
flutter-tizen#15 0x0000ffff919efd24 in tizen_cpp::AppCoreBase::Run(int, char**) ()
from /lib64/libapp-core-cpp.so.1
flutter-tizen#16 0x0000ffff91a34bdc in tizen_cpp::AppCoreUiBase::DoRun(int, char**) ()
from /lib64/libapp-core-ui-cpp.so.1
flutter-tizen#17 0x0000ffff91a34f4c in tizen_cpp::AppCoreUiBase::Impl::Run(int, char**) ()
from /lib64/libapp-core-ui-cpp.so.1
flutter-tizen#18 0x0000ffff918b3fa8 in ui_app_main ()
from /usr/lib64/libcapi-appfw-application.so.0
flutter-tizen#19 0x0000ffff94fd93a0 in ?? () from /usr/apps/org.tizen.homescreen/bin/runner
flutter-tizen#20 0x0000ffff94fd8a8c in main ()
from /usr/apps/org.tizen.homescreen/bin/runner
flutter-tizen#21 0x0000aaaae7065bac in launchpad::loader::LaunchpadLoader::OnTerminate(int, char**) ()
flutter-tizen#22 0x0000ffff94e2a030 in launchpad_loader_main ()
from /lib64/liblaunchpad.so.0
flutter-tizen#23 0x0000aaaae7063b58 in launchpad::loader::LaunchpadLoader::Run() ()
flutter-tizen#24 0x0000aaaae7063500 in main ()
```
JSUYA
added a commit
to JSUYA/embedder
that referenced
this pull request
Mar 6, 2026
Based on BT, two issues can be expected.
First, a problem could occur in vconf when calling the setting getter while the system is not fully initialized. Alternatively, a deadlock could occur on the same conf when calling the setting getter after registering the changed callback.
Since this issue did not occur after a reboot or subsequent routines, it is likely a timing issue due to the callback rather than an initialization issue. Therefore, the problem can be prevented by calling the setting getter before registering the changed callback.
```
crash dump
(gdb) bt
#0 0x0000ffff94a13524 in __GI___poll (fds=0xfffff49d3830, nfds=1,
timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:41
#1 0x0000ffff938f44e8 in ?? () from /lib64/libbuxton2.so.1
flutter-tizen#2 0x0000ffff938f6ac0 in buxton_get_value_sync () from /lib64/libbuxton2.so.1
flutter-tizen#3 0x0000ffff93703af8 in ?? () from /lib64/libvconf.so.0
flutter-tizen#4 0x0000ffff937052c4 in vconf_get_int () from /lib64/libvconf.so.0
flutter-tizen#5 0x0000ffff8c1b9604 in ?? () from /lib64/libcapi-system-system-settings.so.0
flutter-tizen#6 0x0000ffff8c1b390c in system_settings_get_value_int ()
from /lib64/libcapi-system-system-settings.so.0
flutter-tizen#7 0x0000ffff8c2ec3d0 in ?? ()
from /usr/apps/org.tizen.homescreen/bin/../lib/libflutter_tizen_common.so
flutter-tizen#8 0x0000ffff8c2ec330 in ?? ()
from /usr/apps/org.tizen.homescreen/bin/../lib/libflutter_tizen_common.so
flutter-tizen#9 0x0000ffff8c2f538c in ?? ()
from /usr/apps/org.tizen.homescreen/bin/../lib/libflutter_tizen_common.so
flutter-tizen#10 0x0000ffff8c2f3d70 in FlutterDesktopViewCreateFromNewWindow ()
from /usr/apps/org.tizen.homescreen/bin/../lib/libflutter_tizen_common.so
flutter-tizen#11 0x0000ffff94fd8ff4 in ?? () from /usr/apps/org.tizen.homescreen/bin/runner
flutter-tizen#12 0x0000ffff94fd8df0 in ?? () from /usr/apps/org.tizen.homescreen/bin/runner
flutter-tizen#13 0x0000ffff918b3df8 in ?? () from /usr/lib64/libcapi-appfw-application.so.0
flutter-tizen#14 0x0000ffff919efc6c in tizen_cpp::AppCoreBase::Init(int, char**) ()
from /lib64/libapp-core-cpp.so.1
flutter-tizen#15 0x0000ffff919efd24 in tizen_cpp::AppCoreBase::Run(int, char**) ()
from /lib64/libapp-core-cpp.so.1
flutter-tizen#16 0x0000ffff91a34bdc in tizen_cpp::AppCoreUiBase::DoRun(int, char**) ()
from /lib64/libapp-core-ui-cpp.so.1
flutter-tizen#17 0x0000ffff91a34f4c in tizen_cpp::AppCoreUiBase::Impl::Run(int, char**) ()
from /lib64/libapp-core-ui-cpp.so.1
flutter-tizen#18 0x0000ffff918b3fa8 in ui_app_main ()
from /usr/lib64/libcapi-appfw-application.so.0
flutter-tizen#19 0x0000ffff94fd93a0 in ?? () from /usr/apps/org.tizen.homescreen/bin/runner
flutter-tizen#20 0x0000ffff94fd8a8c in main ()
from /usr/apps/org.tizen.homescreen/bin/runner
flutter-tizen#21 0x0000aaaae7065bac in launchpad::loader::LaunchpadLoader::OnTerminate(int, char**) ()
flutter-tizen#22 0x0000ffff94e2a030 in launchpad_loader_main ()
from /lib64/liblaunchpad.so.0
flutter-tizen#23 0x0000aaaae7063b58 in launchpad::loader::LaunchpadLoader::Run() ()
flutter-tizen#24 0x0000aaaae7063500 in main ()
```
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embedder.hFlutterTizenEngineGroupclassRunOrSpawnEngine,SpawnEnginefunctionMust be merged after merging flutter-tizen/engine#361
Signed-off-by: swan.seo swan.seo@samsung.com