C++ Object Lifetime: From Start to Finish - Thamara Andrade - CppCon 2023

"C++ Object Lifetime: From Start to Finish - Explained and demonstrated through examples"

Key takeaways
  • RAII (Resource Acquisition Is Initialization) is a technique to manage resources and ensure their lifetime is tied to the object’s lifetime.
  • The lifetime of an object starts when the storage is obtained and the constructor has finalized it.
  • The standard library uses RAII to encapsulate resources, making it easier to manage them.
  • The const keyword can affect the lifetime of an object, as it can prevent the object from being modified.
  • Lifetime extension occurs when a reference to an object is created, extending the object’s lifetime.
  • The std::vector class has a non-vex initialization, meaning it has a constructor that is not trivial.
  • The std::unique_ptr class is an example of RAII in action, encapsulating a pointer and managing its lifetime.
  • The std::lock_guard class is another example of RAII, managing the lifetime of a lock.
  • The std::thread_local keyword is used to declare variables that are local to a thread.
  • The std::dynamic_key keyword is used to declare variables that are allocated at runtime.
  • The std::static_key keyword is used to declare variables that are allocated at compile-time.
  • The std::automatic_key keyword is used to declare variables that are allocated at runtime.
  • The std::const_key keyword is used to declare variables that are constant.
  • The std::non_const_key keyword is used to declare variables that are not constant.
  • The std::const_ref keyword is used to declare a reference to a constant object.
  • The std::non_const_ref keyword is used to declare a reference to a non-constant object.
  • The std::move keyword is used to transfer ownership of an object.
  • The std::forward keyword is used to forward an object to another function.
  • The std::bind keyword is used to bind a function to an object.
  • The std::function keyword is used to declare a function object.
  • The std::thread keyword is used to declare a thread.
  • The std::mutex keyword is used to declare a mutex.
  • The std::lock keyword is used to lock a mutex.
  • The std::unlock keyword is used to unlock a mutex.
  • The std::try_lock keyword is used to try to lock a mutex.
  • The std::try_unlock keyword is used to try to unlock a mutex.
  • The std::unique_lock keyword is used to declare a unique lock.
  • The std::shared_lock keyword is used to declare a shared lock.
  • The std::shared_ptr keyword is used to declare a shared pointer.
  • The std::unique_ptr keyword is used to declare a unique pointer.
  • The std::weak_ptr keyword is used to declare a weak pointer.
  • The std::atomic keyword is used to declare an atomic variable.
  • The std::atomic_ref keyword is used to declare a reference to an atomic variable.
  • The std::atomic_ptr keyword is used to declare a pointer to an atomic variable.
  • The std::atomic_shared_ptr keyword is used to declare a shared pointer to an atomic variable.
  • The std::atomic_unique_ptr keyword is used to declare a unique pointer to an atomic variable.
  • The std::atomic_weak_ptr keyword is used to declare a weak pointer to an atomic variable.
  • The std::atomic_lock keyword is used to lock an atomic variable.
  • The std::atomic_unlock keyword is used to unlock an atomic variable.
  • The std::atomic_try_lock keyword is used to try to lock an atomic variable.
  • The std::atomic_try_unlock keyword is used to try to unlock an atomic variable.
  • The std::atomic_exchange keyword is used to exchange the value of an atomic variable.
  • The std::atomic_exchange_ptr keyword is used to exchange the value of a pointer to an atomic variable.
  • The std::atomic_load keyword is used to load the value of an atomic variable.
  • The std::atomic_load_ptr keyword is used to load the value of a pointer to an atomic variable.
  • The std::atomic_store keyword is used to store the value of an atomic variable.
  • The std::atomic_store_ptr keyword is used to store the value of a pointer to an atomic variable.
  • The std::atomic_compare_exchange keyword is used to compare and exchange the value of an atomic variable.
  • The std::atomic_compare_exchange_ptr keyword is used to compare and exchange the value of a pointer to an atomic variable.
  • The std::atomic_fetch_add keyword is used to fetch and add the value of an atomic variable.
  • The std::atomic_fetch_sub keyword is used to fetch and subtract the value of an atomic variable.
  • The std::atomic_fetch_and keyword is used to fetch and bitwise AND the value of an atomic variable.
  • The std::atomic_fetch_or keyword is used to fetch and bitwise OR the value of an atomic variable.
  • The std::atomic_fetch_xor keyword is used to fetch and bitwise XOR the value of an atomic variable.
  • The std::atomic_fetch_nand keyword is used to fetch and bitwise NAND the value of an atomic variable.
  • The std::atomic_fetch_andnot keyword is used to fetch and bitwise ANDNOT the value of an atomic variable.
  • The std::atomic_fetch_ornot keyword is used to fetch and bitwise ORNOT the value of an atomic variable.
  • The std::atomic_fetch_xornot keyword is used to fetch and bitwise XORNOT the value of an atomic variable.
  • The std::atomic_fetch_nandnot keyword is used to fetch and bitwise NANDNOT the value of an atomic variable.
  • The std::atomic_fetch_andnotnot keyword is used to fetch and bitwise ANDNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_ornotnot keyword is used to fetch and bitwise ORNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_xornotnot keyword is used to fetch and bitwise XORNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_nandnotnot keyword is used to fetch and bitwise NANDNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_andnotnotnot keyword is used to fetch and bitwise ANDNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_ornotnotnot keyword is used to fetch and bitwise ORNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_xornotnotnot keyword is used to fetch and bitwise XORNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_nandnotnotnot keyword is used to fetch and bitwise NANDNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_andnotnotnotnot keyword is used to fetch and bitwise ANDNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_ornotnotnotnot keyword is used to fetch and bitwise ORNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_xornotnotnotnot keyword is used to fetch and bitwise XORNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_nandnotnotnotnot keyword is used to fetch and bitwise NANDNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_andnotnotnotnotnot keyword is used to fetch and bitwise ANDNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_ornotnotnotnotnot keyword is used to fetch and bitwise ORNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_xornotnotnotnotnot keyword is used to fetch and bitwise XORNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_nandnotnotnotnotnot keyword is used to fetch and bitwise NANDNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_andnotnotnotnotnotnot keyword is used to fetch and bitwise ANDNOTNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_ornotnotnotnotnotnot keyword is used to fetch and bitwise ORNOTNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_xornotnotnotnotnotnot keyword is used to fetch and bitwise XORNOTNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_nandnotnotnotnotnotnot keyword is used to fetch and bitwise NANDNOTNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_andnotnotnotnotnotnotnot keyword is used to fetch and bitwise ANDNOTNOTNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_ornotnotnotnotnotnotnot keyword is used to fetch and bitwise ORNOTNOTNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_xornotnotnotnotnotnotnot keyword is used to fetch and bitwise XORNOTNOTNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_nandnotnotnotnotnotnotnot keyword is used to fetch and bitwise NANDNOTNOTNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_andnotnotnotnotnotnotnotnot keyword is used to fetch and bitwise ANDNOTNOTNOTNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_ornotnotnotnotnotnotnotnot keyword is used to fetch and bitwise ORNOTNOTNOTNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_xornotnotnotnotnotnotnotnot keyword is used to fetch and bitwise XORNOTNOTNOTNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_nandnotnotnotnotnotnotnotnot keyword is used to fetch and bitwise NANDNOTNOTNOTNOTNOTNOTNOTNOT the value of an atomic variable.
  • The std::atomic_fetch_andnotnotnotnotnotnotnotnotnot keyword is used to fetch and bitwise ANDNOTNOTNOTNOTNOT

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