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authorMichael Haggerty <mhagger@alum.mit.edu>2013-06-20 08:37:51 (GMT)
committerJunio C Hamano <gitster@pobox.com>2013-06-20 22:50:17 (GMT)
commit38612532240ecbe1b12e54ca859fed8410ae6de1 (patch)
treef712bce08c4130f25bf4ca5717b82018a7b569fb /builtin/ls-files.c
parentc21d39d7c7eb07eed0be301a72856bff65201256 (diff)
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add a stat_validity struct
It can sometimes be useful to know whether a path in the filesystem has been updated without going to the work of opening and re-reading its content. We trust the stat() information on disk already to handle index updates, and we can use the same trick here. This patch introduces a "stat_validity" struct which encapsulates the concept of checking the stat-freshness of a file. It is implemented on top of "struct stat_data" to reuse the logic about which stat entries to trust for a particular platform, but hides the complexity behind two simple functions: check and update. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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