The uses of std::osyncstream?

Question

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?

score 6 · Accepted Answer · answered Nov 24 '17 at 22:36

6

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.

answered Nov 24 '17 at 22:36

lilezek

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score 2 · Answer 2 · answered Mar 08 '18 at 21:05

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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.

answered Mar 08 '18 at 21:05

bit2shift

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The uses of std::osyncstream?

2 Answers2