| commit | 8e554429e8a9dbb5dba6b8aeca66fc27c0bb5538 | |
| author | Shawn O. Pearce <spearce@spearce.org> | |
| Sun, 24 Dec 2006 05:45:47 +0000 (24 00:45 -0500) | ||
| committer | Junio C Hamano <junkio@cox.net> | |
| Sun, 24 Dec 2006 08:29:43 +0000 (24 00:29 -0800) | ||
| tree | adf7d910ef56f76cef598db30fec509b94c64d92 | treesnapshot (tar.gz zip) |
| parent | d6779124b90ef5c00697815b04c9f75fd3756586 | commitdiff |
Switch git_mmap to use pread.
Now that Git depends on pread in index-pack its safe to say we can
also depend on it within the git_mmap emulation we activate when
NO_MMAP is set. On most systems pread should be slightly faster
than an lseek/read/lseek sequence as its one system call vs. three
system calls.
We also now honor EAGAIN and EINTR error codes from pread and
restart the prior read.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Now that Git depends on pread in index-pack its safe to say we can
also depend on it within the git_mmap emulation we activate when
NO_MMAP is set. On most systems pread should be slightly faster
than an lseek/read/lseek sequence as its one system call vs. three
system calls.
We also now honor EAGAIN and EINTR error codes from pread and
restart the prior read.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
| compat/mmap.c | diffblobblamehistory |