CODEWITHSUNDEEP
c++c++20
Nico Engels
Nico Engels

Reputation: 447

The uses of std::osyncstream?

What are the uses of the new C++20 std::osyncstream (http://en.cppreference.com/w/cpp/io/basic_osyncstream)? Isn't the std::ostream already thread-safe?

Upvotes: 5

Views: 3487

Answers (2)

bit2shift
bit2shift

Reputation: 676

Writing to a log file or to std::cout from different threads, atomically.
That's the first thing I thought of.

In such a scenario, written data won't be interleaved or garbled.

Upvotes: 2

lilezek
lilezek

Reputation: 7344

According to How to easily make std::cout thread-safe?

it looks like it is not thread-safe. They even (the first answer in that question) suggest to make a wrapper, which is basically what std::osyncstream offers.

Upvotes: 7

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