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| author | Jonathan Wakely <jwakely@redhat.com> | 2022-11-16 15:35:23 +0000 |
|---|---|---|
| committer | Jonathan Wakely <jwakely@redhat.com> | 2022-11-16 20:52:53 +0000 |
| commit | 629897ed80512a8618e08673c03d8482cbc42eef (patch) | |
| tree | 91d3a88f9fe0f259961e01f5ec2190e035f73508 /gcc | |
| parent | 2f5c071860ba3f8ef67d0b9d8291a73766ce0a44 (diff) | |
| download | gcc-629897ed80512a8618e08673c03d8482cbc42eef.zip gcc-629897ed80512a8618e08673c03d8482cbc42eef.tar.gz gcc-629897ed80512a8618e08673c03d8482cbc42eef.tar.bz2 | |
libstdc++: Improve performance of chrono::utc_clock::now()
We can use an array instead of a std::vector, and we can avoid the
binary search for the common case of a time point after the most recent
leap second. On one system where I tested this, utc_clock::now() now
takes about 16ns instead of 31ns.
libstdc++-v3/ChangeLog:
* include/std/chrono (get_leap_second_info): Optimize.
Diffstat (limited to 'gcc')
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