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Type:
Bug
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Resolution: Won't Fix
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Priority:
Major - P3
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None
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Affects Version/s: None
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Component/s: None
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None
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?
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7693
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Not Needed
Stack trace from the deadlock reported here: https://github.com/realm/realm-dart/issues/1675
This issue do not occur with realm-dart 1.9.0 which is based on realm-core 13.26.0-13-gd12c3.
One thread needs to update the schema, and hence tries to acquire the write lock, which is already held.
Thread: io.futter.ui
__psynch_cvwait (@__psynch_cvwait:5) _pthread_cond_wait (@_pthread_cond_wait:310) std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) (@std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&):10) realm::DB::AsyncCommitHelper::blocking_begin_write() (@realm::DB::AsyncCommitHelper::blocking_begin_write():48) realm::Transaction::acquire_write_lock() (@realm::Transaction::acquire_write_lock():45) bool realm::Transaction::promote_to_write<realm::_impl::NullInstructionObserver>(realm::_impl::NullInstructionObserver*, bool) (@bool realm::Transaction::promote_to_write<realm::_impl::NullInstructionObserver>(realm::_impl::NullInstructionObserver*, bool):124) realm::Realm::update_schema(realm::Schema, unsigned long long, std::__1::function<void (std::__1::shared_ptr<realm::Realm>, std::__1::shared_ptr<realm::Realm>, realm::Schema&)>, std::__1::function<void (std::__1::shared_ptr<realm::Realm>)>, bool) (@realm::Realm::update_schema(realm::Schema, unsigned long long, std::__1::function<void (std::__1::shared_ptr<realm::Realm>, std::__1::shared_ptr<realm::Realm>, realm::Schema&)>, std::__1::function<void (std::__1::shared_ptr<realm::Realm>)>, bool):189) realm::_impl::RealmCoordinator::do_get_realm(realm::RealmConfig&&, std::__1::shared_ptr<realm::Realm>&, std::__1::optional<realm::VersionID>, realm::util::CheckedUniqueLock&, bool) (@realm::_impl::RealmCoordinator::do_get_realm(realm::RealmConfig&&, std::__1::shared_ptr<realm::Realm>&, std::__1::optional<realm::VersionID>, realm::util::CheckedUniqueLock&, bool):410) realm::_impl::RealmCoordinator::get_realm(realm::RealmConfig, std::__1::optional<realm::VersionID>) (@realm::_impl::RealmCoordinator::get_realm(realm::RealmConfig, std::__1::optional<realm::VersionID>):118) realm::Realm::get_shared_realm(realm::RealmConfig) (@realm::Realm::get_shared_realm(realm::RealmConfig):33) realm_open (@realm_open:22) ...
Some other thread stacks at the time.
Thread: Realm notification listener:
kevent (@kevent:5) realm::_impl::ExternalCommitHelper::listen() (@realm::_impl::ExternalCommitHelper::listen():42) void* std::__1::__thread_proxy[abi:v160006]<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct>>, realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&, realm::RealmConfig const&)::$_0>>(void*) (@void* std::__1::__thread_proxy[abi:v160006]<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct>>, realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&, realm::RealmConfig const&)::$_0>>(void*):17) _pthread_start (@_pthread_start:37)
Thread:
__psynch_cvwait (@__psynch_cvwait:5) _pthread_cond_wait (@_pthread_cond_wait:310) std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) (@std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&):10) realm::DB::AsyncCommitHelper::main() (@realm::DB::AsyncCommitHelper::main():32) void* std::__1::__thread_proxy[abi:v160006]<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct>>, realm::DB::AsyncCommitHelper::start_thread()::'lambda'()>>(void*) (@void* std::__1::__thread_proxy[abi:v160006]<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct>>, realm::DB::AsyncCommitHelper::start_thread()::'lambda'()>>(void*):16) _pthread_start (@_pthread_start:37)
- causes
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- Closed
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