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thread::try_join_until: Avoid busy wait if system clock changes #58

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thread::try_join_until: Avoid busy wait if system clock changes #58

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2 changes: 1 addition & 1 deletion include/boost/thread/detail/thread.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -485,9 +485,9 @@ namespace boost
bool try_join_until(const chrono::time_point<Clock, Duration>& t)
{
using namespace chrono;
system_clock::time_point s_now = system_clock::now();
bool joined= false;
do {
system_clock::time_point s_now = system_clock::now();
typename Clock::duration d = ceil<nanoseconds>(t-Clock::now());
if (d <= Clock::duration::zero()) return false; // in case the Clock::time_point t is already reached
joined = try_join_until(s_now + d);
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