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base: synchronize signal-proxy thread destruction

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This commit is contained in:
Christian Helmuth 2019-02-15 14:39:27 +01:00 committed by Norman Feske
parent 1c1cbb9b95
commit c4c19f885f
3 changed files with 24 additions and 4 deletions
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9
repos/base/include/base/entrypoint.h
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@ -122,6 +122,10 @@ class Genode::Entrypoint : Noncopyable
bool _wait_and_dispatch_one_io_signal(bool dont_block); bool _wait_and_dispatch_one_io_signal(bool dont_block);
Constructible<Signal_proxy_thread> _signal_proxy_thread { }; Constructible<Signal_proxy_thread> _signal_proxy_thread { };
bool _stop_signal_proxy { false };
void _handle_stop_signal_proxy() { _stop_signal_proxy = true; }
Constructible<Genode::Signal_handler<Entrypoint>> _stop_signal_proxy_handler { };
friend class Startup; friend class Startup;
@ -141,10 +145,7 @@ class Genode::Entrypoint : Noncopyable
Entrypoint(Env &env, size_t stack_size, char const *name, Entrypoint(Env &env, size_t stack_size, char const *name,
Affinity::Location); Affinity::Location);
~Entrypoint() ~Entrypoint();
{
_rpc_ep->dissolve(&_signal_proxy);
}
/** /**
* Associate RPC object with the entry point * Associate RPC object with the entry point

2
repos/base/lib/symbols/ld
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@ -66,6 +66,8 @@ _ZN6Genode10EntrypointC1ERNS_3EnvE T
_ZN6Genode10EntrypointC1ERNS_3EnvEmPKc T _ZN6Genode10EntrypointC1ERNS_3EnvEmPKc T
_ZN6Genode10EntrypointC1ERNS_3EnvEmPKcNS_8Affinity8LocationE T _ZN6Genode10EntrypointC1ERNS_3EnvEmPKcNS_8Affinity8LocationE T
_ZN6Genode10EntrypointC2ERNS_3EnvEmPKcNS_8Affinity8LocationE T _ZN6Genode10EntrypointC2ERNS_3EnvEmPKcNS_8Affinity8LocationE T
_ZN6Genode10EntrypointD1Ev T
_ZN6Genode10EntrypointD2Ev T
_ZN6Genode10Ipc_serverC1Ev T _ZN6Genode10Ipc_serverC1Ev T
_ZN6Genode10Ipc_serverC2Ev T _ZN6Genode10Ipc_serverC2Ev T
_ZN6Genode10Ipc_serverD1Ev T _ZN6Genode10Ipc_serverD1Ev T

17
repos/base/src/lib/base/entrypoint.cc
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@ -135,6 +135,11 @@ void Entrypoint::_process_incoming_signals()
*/ */
_signal_pending_ack_lock.lock(); _signal_pending_ack_lock.lock();
} }
/* entrypoint destructor requested to stop signal handling */
if (_stop_signal_proxy) {
return;
}
} while (!_suspended); } while (!_suspended);
_deferred_signal_handler.destruct(); _deferred_signal_handler.destruct();
@ -333,6 +338,7 @@ Entrypoint::Entrypoint(Env &env)
_process_incoming_signals(); _process_incoming_signals();
} }
Entrypoint::Entrypoint(Env &env, size_t stack_size, char const *name, Entrypoint::Entrypoint(Env &env, size_t stack_size, char const *name,
Affinity::Location location) Affinity::Location location)
: :
@ -344,3 +350,14 @@ Entrypoint::Entrypoint(Env &env, size_t stack_size, char const *name,
Thread::Weight(), env.cpu()); Thread::Weight(), env.cpu());
} }
Entrypoint::~Entrypoint()
{
/* stop the signal proxy before destruction */
_stop_signal_proxy_handler.construct(
*this, *this, &Entrypoint::_handle_stop_signal_proxy);
Signal_transmitter(*_stop_signal_proxy_handler).submit();
_signal_proxy_thread->join();
_stop_signal_proxy_handler.destruct();
_rpc_ep->dissolve(&_signal_proxy);
}