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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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12
contrib/epee/include/net/levin_client_async.h
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@ -52,6 +52,7 @@ namespace levin
class levin_client_async
{
levin_commands_handler* m_pcommands_handler;
void (*commands_handler_destroy)(levin_commands_handler*);
volatile uint32_t m_is_stop;
volatile uint32_t m_threads_count;
::critical_section m_send_lock;
@ -85,9 +86,9 @@ namespace levin
::critical_section m_connection_lock;
net_utils::blocked_mode_client m_transport;
public:
levin_client_async():m_pcommands_handler(NULL), m_is_stop(0), m_threads_count(0), m_invoke_data_ready(0), m_invoke_is_active(0)
levin_client_async():m_pcommands_handler(NULL), commands_handler_destroy(NULL), m_is_stop(0), m_threads_count(0), m_invoke_data_ready(0), m_invoke_is_active(0)
{}
levin_client_async(const levin_client_async& /*v*/):m_pcommands_handler(NULL), m_is_stop(0), m_threads_count(0), m_invoke_data_ready(0), m_invoke_is_active(0)
levin_client_async(const levin_client_async& /*v*/):m_pcommands_handler(NULL), commands_handler_destroy(NULL), m_is_stop(0), m_threads_count(0), m_invoke_data_ready(0), m_invoke_is_active(0)
{}
~levin_client_async()
{
@ -97,11 +98,16 @@ namespace levin
while(boost::interprocess::ipcdetail::atomic_read32(&m_threads_count))
::Sleep(100);
set_handler(NULL);
}
void set_handler(levin_commands_handler* phandler)
void set_handler(levin_commands_handler* phandler, void (*destroy)(levin_commands_handler*) = NULL)
{
if (commands_handler_destroy && m_pcommands_handler)
(*commands_handler_destroy)(m_pcommands_handler);
m_pcommands_handler = phandler;
m_pcommands_handler_destroy = destroy;
}
bool connect(uint32_t ip, uint32_t port, uint32_t timeout)