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LibCore: Fix crash on RPC client disconnect

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The RPC client management was not updated for the changes that made
CObject reference-counted it seems. :^)
This commit is contained in:
Andreas Kling 2020-01-03 20:27:48 +01:00
parent e76e533a69
commit 70a41420a9
1 changed files with 10 additions and 6 deletions
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16
Libraries/LibCore/CEventLoop.cpp
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@ -23,6 +23,8 @@
//#define CEVENTLOOP_DEBUG //#define CEVENTLOOP_DEBUG
//#define DEFERRED_INVOKE_DEBUG //#define DEFERRED_INVOKE_DEBUG
class RPCClient;
static CEventLoop* s_main_event_loop; static CEventLoop* s_main_event_loop;
static Vector<CEventLoop*>* s_event_loop_stack; static Vector<CEventLoop*>* s_event_loop_stack;
HashMap<int, NonnullOwnPtr<CEventLoop::EventLoopTimer>>* CEventLoop::s_timers; HashMap<int, NonnullOwnPtr<CEventLoop::EventLoopTimer>>* CEventLoop::s_timers;
@ -30,13 +32,18 @@ HashTable<CNotifier*>* CEventLoop::s_notifiers;
int CEventLoop::s_next_timer_id = 1; int CEventLoop::s_next_timer_id = 1;
int CEventLoop::s_wake_pipe_fds[2]; int CEventLoop::s_wake_pipe_fds[2];
RefPtr<CLocalServer> CEventLoop::s_rpc_server; RefPtr<CLocalServer> CEventLoop::s_rpc_server;
HashMap<int, RefPtr<RPCClient>> s_rpc_clients;
// FIXME: It's not great if this wraps around.
static int s_next_client_id = 0;
class RPCClient : public CObject { class RPCClient : public CObject {
C_OBJECT(RPCClient) C_OBJECT(RPCClient)
public: public:
explicit RPCClient(RefPtr<CLocalSocket> socket) explicit RPCClient(RefPtr<CLocalSocket> socket)
: m_socket(move(socket)) : m_socket(move(socket))
, m_client_id(s_next_client_id++)
{ {
s_rpc_clients.set(m_client_id, this);
add_child(*m_socket); add_child(*m_socket);
m_socket->on_ready_to_read = [this] { m_socket->on_ready_to_read = [this] {
i32 length; i32 length;
@ -118,12 +125,12 @@ public:
void shutdown() void shutdown()
{ {
// FIXME: This is quite a hackish way to clean ourselves up. s_rpc_clients.remove(m_client_id);
delete this;
} }
private: private:
RefPtr<CLocalSocket> m_socket; RefPtr<CLocalSocket> m_socket;
int m_client_id { -1 };
}; };
CEventLoop::CEventLoop() CEventLoop::CEventLoop()
@ -159,10 +166,7 @@ CEventLoop::CEventLoop()
ASSERT(listening); ASSERT(listening);
s_rpc_server->on_ready_to_accept = [&] { s_rpc_server->on_ready_to_accept = [&] {
auto client_socket = s_rpc_server->accept(); RPCClient::construct(s_rpc_server->accept());
ASSERT(client_socket);
// NOTE: RPCClient will delete itself in RPCClient::shutdown().
(void)RPCClient::construct(move(client_socket)).leak_ref();
}; };
} }