diff options
Diffstat (limited to '3rdparty/asio/src/examples/cpp11/executors/bank_account_2.cpp')
-rw-r--r-- | 3rdparty/asio/src/examples/cpp11/executors/bank_account_2.cpp | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp11/executors/bank_account_2.cpp b/3rdparty/asio/src/examples/cpp11/executors/bank_account_2.cpp new file mode 100644 index 00000000000..b646cb29518 --- /dev/null +++ b/3rdparty/asio/src/examples/cpp11/executors/bank_account_2.cpp @@ -0,0 +1,54 @@ +#include <asio/post.hpp> +#include <asio/thread_pool.hpp> +#include <asio/use_future.hpp> +#include <iostream> + +using asio::post; +using asio::thread_pool; +using asio::use_future; + +// Traditional active object pattern. +// Member functions block until operation is finished. + +class bank_account +{ + int balance_ = 0; + mutable thread_pool pool_{1}; + +public: + void deposit(int amount) + { + post(pool_, + use_future([=] + { + balance_ += amount; + })).get(); + } + + void withdraw(int amount) + { + post(pool_, + use_future([=] + { + if (balance_ >= amount) + balance_ -= amount; + })).get(); + } + + int balance() const + { + return post(pool_, + use_future([=] + { + return balance_; + })).get(); + } +}; + +int main() +{ + bank_account acct; + acct.deposit(20); + acct.withdraw(10); + std::cout << "balance = " << acct.balance() << "\n"; +} |