Speed up dlpath() on MacOS
#35630
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Speed up dlpath() on MacOS
#35630
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`dlpath()` on MacOS iterated over all loaded image names, calling `dlopen()` on them again and comparing returned handles to see if the given handle matched. This wasted a lot of time running through the `dlopen()` machinery, we can bypass much of it by passing `RTLD_NOLOAD` in to `dlopen()`, as we are assured that all pathnames we are probing are already loaded.
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dlpath()on MacOS iterated over all loaded image names, callingdlopen()on them again and comparing returned handles to see if thegiven handle matched. This wasted a lot of time running through the
dlopen()machinery, we can bypass much of it by passingRTLD_NOLOADin to
dlopen(), as we are assured that all pathnames we are probingare already loaded.