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Use posix_fadvise(2) only if it's available.

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This commit is contained in:
Juan RP
2012-12-15 10:47:30 +01:00
parent 5dab658d09
commit b75cd05c37
2 changed files with 49 additions and 38 deletions
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15
lib/package_unpack.c
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@ -23,6 +23,10 @@
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/stat.h>
#include <stdio.h>
#include <stdbool.h>
@ -581,6 +585,7 @@ int HIDDEN
xbps_unpack_binary_pkg(struct xbps_handle *xhp, prop_dictionary_t pkg_repod)
{
struct archive *ar = NULL;
struct stat pkg_stat;
const char *pkgname, *version, *pkgver;
char *bpkg;
int pkg_fd, rv = 0;
@ -627,8 +632,11 @@ xbps_unpack_binary_pkg(struct xbps_handle *xhp, prop_dictionary_t pkg_repod)
}
archive_read_open_fd(ar, pkg_fd, ARCHIVE_READ_BLOCKSIZE);
free(bpkg);
posix_fadvise(pkg_fd, 0, 0, POSIX_FADV_SEQUENTIAL);
#ifdef HAVE_POSIX_FADVISE
fstat(pkg_fd, &pkg_stat);
posix_fadvise(pkg_fd, 0, pkg_stat.st_size, POSIX_FADV_SEQUENTIAL);
#endif
/*
* Extract archive files.
*/
@ -639,8 +647,9 @@ xbps_unpack_binary_pkg(struct xbps_handle *xhp, prop_dictionary_t pkg_repod)
pkgver, strerror(rv));
goto out;
}
posix_fadvise(pkg_fd, 0, 0, POSIX_FADV_DONTNEED);
#ifdef HAVE_POSIX_FADVISE
posix_fadvise(pkg_fd, 0, pkg_stat.st_size, POSIX_FADV_DONTNEED);
#endif
/*
* Set package state to unpacked.
*/