wireguard-openbsd/lib/libc/gen/seekdir.c, branch jd/queueboosts WireGuard implementation for the OpenBSD kernel https://git.zx2c4.com/wireguard-openbsd/atom/lib/libc/gen/seekdir.c?h=jd%2Fqueueboosts 2015-09-12T13:34:22Z Wrap <dirent.h> so that internal calls go direct and they're all weak symbols 2015-09-12T13:34:22Z guenther guenther@openbsd.org 2015-09-12T13:34:22Z urn:sha1:209e395206c9b2564b5720b7e81f09b0eb38e552 Optimization, no functional change: 2014-03-10T07:54:14Z schwarze schwarze@openbsd.org 2014-03-10T07:54:14Z urn:sha1:06373755481a12c92842f7d38e4928ce5f3de6cf Save a cookie pointing to the very first entry in the DIR.dd_buf cache buffer and use that to speed up seekdir(3) when rewinding to that first entry. No libc bump because DIR is an opaque struct. When the optimization applies, which in particular it always does for rewinddir(3) after reading less than about 500 entries, seekdir(3) execution time drops from 100 to 0.05 milliseconds on my i386 notebook. Other cases are not slowed down. Based on an idea from and ok by guenther@. Search the userland buffer of dirent structures before falling back to 2013-11-06T20:35:25Z schwarze schwarze@openbsd.org 2013-11-06T20:35:25Z urn:sha1:46537584433a2cf02efa1da6830b813a313fa9e8 getdents(2). No functional change, but considerable speedup in many cases, see http://marc.info/?l=openbsd-tech&m=138369623117934 for some approximate numbers. ok guenther@, "good diagnosis" deraadt@ Cleanup, no functional change: 2013-11-05T20:36:51Z schwarze schwarze@openbsd.org 2013-11-05T20:36:51Z urn:sha1:c7d031fa60681dcdda5712e0964a0c2fba71462b 1. avoid code duplication in rewinddir() by calling seekdir() directly 2. move __seekdir() into seekdir() and _telldir_unlocked() into telldir() Both functions were called from nowhere else. 3. remove some unused #include directives and one unused function prototype ok otto@ millert@ _FD_LOCK/UNLOCK() is libpthread specific and not needed for librthread, so 2007-06-05T18:11:48Z kurt kurt@openbsd.org 2007-06-05T18:11:48Z urn:sha1:45e14c381361430fbd1edeac8cedeeb0decb1480 isolate its usage to libpthread only and replace with generic non-static mutex support in the one place it is needed: - remove _FD_LOCK/UNLOCK from lseek and ftruncate in libc and make the functions weak so that libpthread can override with its own new versions that do the locking. - remove _thread_fd_lock/unlock() weak functions from libc and adjust libpthread for the change. - add generic _thread_mutex_lock/unlock/destroy() weak functions in libc to support non-static mutexes in libc and add libpthread and librthread implementations for them. libc can utilize non-static mutexes via the new _MUTEX_LOCK/UNLOCK/DESTROY() macros. Actually these new macros can support both static and non-static mutexes but currently only using them for non-static. - make opendir/closedir/readdir/readdir_r/seekdir/telldir() thread-safe for both thread libraries by using a non-static mutex in the struct _dirdesc (typedef DIR), utilizing it in the *dir functions and remove remaining and incorrect _FD_LOCK/UNLOCK() use in libc. - add comments to both thread libraries to indicate libc depends on the current implementation of static mutex initialization. suggested by marc@ - major bump libc and libpthread due to function removal, structure change and weak symbol conversions. okay marc@, tedu@ - Plug huge mem leak; mostly samba was suffering. 2006-04-01T18:06:59Z otto otto@openbsd.org 2006-04-01T18:06:59Z urn:sha1:3e18185e19be33c32bc49797a90a3e13be7554e7 - Fix semantics: seekdir(pos); telldir() shoud return pos. The code that implements this will be made faster in a later commit. - We loose documented behaviour (after closedir() the telldir() positions are not valid anymore). This was never in Posix, and most other systems have nothing like it. Diff originally from Paul Thorn, rewritten by me using some FreeBSD code. "slap it in" deraadt@ zap remaining rcsid. 2005-08-08T08:05:33Z espie espie@openbsd.org 2005-08-08T08:05:33Z urn:sha1:c2c925dec2134a12f472359f2a189e9a312dd721 Kill old files that are no longer compiled. okay theo ansify function definitions and zap some `register' 2004-05-18T02:05:52Z jfb jfb@openbsd.org 2004-05-18T02:05:52Z urn:sha1:73b3e3c43784cb5fd04439d34c7436bbf85871db ok millert@ Remove the advertising clause in the UCB license which Berkeley 2003-06-02T20:18:29Z millert millert@openbsd.org 2003-06-02T20:18:29Z urn:sha1:6580fee3295c971a919cc04bfc3598c5f8bcd2b1 rescinded 22 July 1999. Proofed by myself and Theo. Part one of userland __P removal. Done with a simple regexp with some minor hand editing to make comments line up correctly. Another pass is forthcoming that handles the cases that could not be done automatically. 2002-02-16T21:27:05Z millert millert@openbsd.org 2002-02-16T21:27:05Z urn:sha1:c72b5b24e14c03dd8b22104fbae0d3921fa2aa37