[asio] What happens when a deadline_timer is deleted
If I have a deadline_timer in my class and my class is deleted, the compleetion function will be called (with error code). But as the destructor have already been run I guess that the 'this' pointer will be invalid! Is this safe? What if my compleetion function is virtual? timer.async_wait(boost::bind(&MyClass::OnTimer, this, boost::asio::placeholders::error)); --
AMDG Bjarne Laursen wrote:
If I have a deadline_timer in my class and my class is deleted, the compleetion function will be called (with error code). But as the destructor have already been run I guess that the 'this' pointer will be invalid!
Correct.
Is this safe?
No.
What if my compleetion function is virtual?
It doesn't matter.
timer.async_wait(boost::bind(&MyClass::OnTimer, this, boost::asio::placeholders::error));
The safest way to handle it is to use shared_ptr and enable_shared_from_this. In Christ, Steven Watanabe
participants (2)
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Bjarne Laursen -
Steven Watanabe