Wraps openFds() and returns a multi-line string suitable for warning or
error messages. By default summarizes only fds at or above
fdSelectLimit() (the select() failure threshold); pass threshold = 0L
to summarize everything.
openFdsReport(threshold = fdSelectLimit())integer. Only fds at or above this number are bucketed.
Defaults to fdSelectLimit().
character scalar; "" if /proc/self/fd is not available.
cat(openFdsReport())
#> Open fds: 23 total, max = 145, 0 at or above threshold (1024).
cat(openFdsReport(threshold = 0L))
#> Open fds: 23 total, max = 145, 23 at or above threshold (0).
#> High-fd holders (count, example):
#> pipe 11 e.g. pipe:[42729]
#> anon_inode 4 e.g. anon_inode:[eventpoll]
#> socket 4 e.g. socket:[40726]
#> other file 2 e.g. /home/runner/work/_temp/34adc2b7-52f7-4d43-81b3-58c549a74aca
#> sqlite 1 e.g. /usr/share/proj/proj.db
#> unknown 1 e.g. NA