c++ - Can std::this_thread::sleep_for() have spurious wakeups? -

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note, not question std::condition_variable::wait_for(). know can wake spuriously.

my program’s behavior suggests answer question yes, stl documentation quite clear condition_variable case. @ least @ cppreference.com, correct answer this_thread appears no.

compiler gcc 4.8.1, in case defect.

the relevant sections of c++ standard (paragraphs [thread.thread.this]/7-9) not mention spurious wake-ups std::this_thread::sleep_for, unlike e.g. std::condition_variable::wait_for.

template <class rep, class period> void sleep_for(const chrono::duration<rep, period>& rel_time);

7 effects: blocks calling thread relative timeout (30.2.4) specified rel_time.

8 synchronization: none.

9 throws: timeout-related exceptions (30.2.4).

this implies behavior observing non-conforming.


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