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Fix an object lifetime bug in net load tests

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The commands handler must not be destroyed before the config
object, or we'll be accessing freed memory.

An earlier attempt at using boost::shared_ptr to control object
lifetime turned out to be very invasive, though would be a
better solution in theory.
This commit is contained in:
moneromooo-monero 2017-10-09 16:46:42 +01:00
parent 86e9de588c
commit 7dbf76d0da
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GPG key ID: 686F07454D6CEFC3
10 changed files with 45 additions and 16 deletions
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16
contrib/epee/include/net/levin_protocol_handler_async.h
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@ -72,9 +72,11 @@ class async_protocol_handler_config
friend class async_protocol_handler<t_connection_context>;
levin_commands_handler<t_connection_context>* m_pcommands_handler;
void (*m_pcommands_handler_destroy)(levin_commands_handler<t_connection_context>*);
public:
typedef t_connection_context connection_context;
levin_commands_handler<t_connection_context>* m_pcommands_handler;
uint64_t m_max_packet_size;
uint64_t m_invoke_timeout;
@ -91,8 +93,9 @@ public:
template<class callback_t>
bool for_connection(const boost::uuids::uuid &connection_id, callback_t cb);
size_t get_connections_count();
void set_handler(levin_commands_handler<t_connection_context>* handler, void (*destroy)(levin_commands_handler<t_connection_context>*) = NULL);
async_protocol_handler_config():m_pcommands_handler(NULL), m_max_packet_size(LEVIN_DEFAULT_MAX_PACKET_SIZE)
async_protocol_handler_config():m_pcommands_handler(NULL), m_pcommands_handler_destroy(NULL), m_max_packet_size(LEVIN_DEFAULT_MAX_PACKET_SIZE)
{}
void del_out_connections(size_t count);
};
@ -832,6 +835,15 @@ size_t async_protocol_handler_config<t_connection_context>::get_connections_coun
}
//------------------------------------------------------------------------------------------
template<class t_connection_context>
void async_protocol_handler_config<t_connection_context>::set_handler(levin_commands_handler<t_connection_context>* handler, void (*destroy)(levin_commands_handler<t_connection_context>*))
{
if (m_pcommands_handler && m_pcommands_handler_destroy)
(*m_pcommands_handler_destroy)(m_pcommands_handler);
m_pcommands_handler = handler;
m_pcommands_handler_destroy = destroy;
}
//------------------------------------------------------------------------------------------
template<class t_connection_context>
int async_protocol_handler_config<t_connection_context>::notify(int command, const std::string& in_buff, boost::uuids::uuid connection_id)
{
async_protocol_handler<t_connection_context>* aph;