Module: wine Branch: master Commit: a87bafc5b92c9f2deaa399e32a8ec42d28f7ea45 URL: https://source.winehq.org/git/wine.git/?a=commit;h=a87bafc5b92c9f2deaa399e32...
Author: Luke Deller luke@deller.id.au Date: Fri Aug 20 21:12:53 2021 +1000
server: Implement file access hints using posix_fadvise.
Signed-off-by: Luke Deller luke@deller.id.au Signed-off-by: Alexandre Julliard julliard@winehq.org
---
configure | 1 + configure.ac | 1 + include/config.h.in | 3 +++ server/fd.c | 13 +++++++++++++ 4 files changed, 18 insertions(+)
diff --git a/configure b/configure index 2e61fcbc685..a53367f0172 100755 --- a/configure +++ b/configure @@ -18010,6 +18010,7 @@ for ac_func in \ pipe2 \ poll \ port_create \ + posix_fadvise \ prctl \ pread \ proc_pidinfo \ diff --git a/configure.ac b/configure.ac index a9750330443..837f41c34aa 100644 --- a/configure.ac +++ b/configure.ac @@ -2186,6 +2186,7 @@ AC_CHECK_FUNCS(\ pipe2 \ poll \ port_create \ + posix_fadvise \ prctl \ pread \ proc_pidinfo \ diff --git a/include/config.h.in b/include/config.h.in index b1918d46ed1..2b488894a49 100644 --- a/include/config.h.in +++ b/include/config.h.in @@ -513,6 +513,9 @@ /* Define to 1 if you have the <port.h> header file. */ #undef HAVE_PORT_H
+/* Define to 1 if you have the `posix_fadvise' function. */ +#undef HAVE_POSIX_FADVISE + /* Define to 1 if you have the `prctl' function. */ #undef HAVE_PRCTL
diff --git a/server/fd.c b/server/fd.c index de7c5d7e36d..a09fc9edfcf 100644 --- a/server/fd.c +++ b/server/fd.c @@ -2026,6 +2026,19 @@ struct fd *open_fd( struct fd *root, const char *name, struct unicode_str nt_nam free( closed_fd ); fd->cacheable = 1; } + +#ifdef HAVE_POSIX_FADVISE + switch (options & (FILE_SEQUENTIAL_ONLY | FILE_RANDOM_ACCESS)) + { + case FILE_SEQUENTIAL_ONLY: + posix_fadvise( fd->unix_fd, 0, 0, POSIX_FADV_SEQUENTIAL ); + break; + case FILE_RANDOM_ACCESS: + posix_fadvise( fd->unix_fd, 0, 0, POSIX_FADV_RANDOM ); + break; + } +#endif + if (root_fd != -1) fchdir( server_dir_fd ); /* go back to the server dir */ return fd;