It sounds like you have two questions here: How can I wait until my thread completes? Answer: This is directly supported by pthreads — make your thread-to-be-stopped JOINABLE (when it is first started), and use pthread_join() to block your current thread until the thread-to-be-stopped is no longer running. How can I tell if my thread … Read more
The __destruct will not be called: If exit is called in another destructor Depending on the PHP Version: if exit is called in a shutdown function registered with register_shutdown_function If there is a fatal error somewhere in the code If another destructor throws an exception If you try to handle an exception in a destructor … Read more
The destructor is not being called because terminate() for the unhandled exception is called before the stack gets unwound. The specific details of what the C++ spec says is outside of my knowledge, but a debug trace with gdb and g++ seems to bear this out. According to the draft standard section 15.3 bullet 9: … Read more
From ยง 3.6.3 of the C++03 standard: Destructors (12.4) for initialized objects of static storage duration (declared at block scope or at namespace scope) are called as a result of returning from main and as a result of calling exit (18.3). These objects are destroyed in the reverse order of the completion of their constructor … Read more
No. There is a cost associated with making a method virtual, and C++ has a philosophy of not making you pay for things that you don’t explicitly state that you want to use. If a virtual destructor would have been generated automatically, you would have been paying the price automatically. Why not just define an … Read more
A better title would be “Why is there no RAII in C#/VB”. C++/CLI (The evolution of the abortion that was Managed C++) has RAII in the exact same sense as C++. It’s all just syntax sugar for the same finalisation pattern that the rest of the CLI languages use (Destructors in managed objects for C++/CLI … Read more
The way to close resources are context managers, aka the with statement: class Foo(object): def __init__(self): self.bar = None def __enter__(self): if self.bar != ‘open’: print ‘opening the bar’ self.bar=”open” return self # this is bound to the `as` part def close(self): if self.bar != ‘closed’: print ‘closing the bar’ self.bar=”close” def __exit__(self, *err): self.close() … Read more
For building containers you obviously want to use one of the standard containers (such as a std::vector). But this is a perfect example of the things you need to consider when your object contains RAW pointers. If your object has a RAW pointer then you need to remember the rule of 3 (now the rule … Read more
Ok, since my last answer apparently didn’t hit the mark, let me try this again. There are plenty of resources and examples on the internet for this topic. Doing a bit of searching and browsing other framework’s code and you’ll see some pretty good examples… Don’t forget that just because PHP will close resources on … Read more
It’s the reason that makes your code work for generic parameters. Consider a container C: template<typename T> struct C { // … ~C() { for(size_t i = 0; i<elements; i++) buffer[i].~T(); } }; It would be annoying to introduce special cases for built-in types. So C++ allows you to do the above, even if T … Read more