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(parent: d677912)
Switch git_mmap to use pread.
authorShawn O. Pearce <redacted>
Sun, 24 Dec 2006 05:45:47 +0000 (00:45 -0500)
committerJunio C Hamano <redacted>
Sun, 24 Dec 2006 08:29:43 +0000 (00:29 -0800)
commit8e554429e8a9dbb5dba6b8aeca66fc27c0bb5538
treeadf7d910ef56f76cef598db30fec509b94c64d92tree | snapshot
parentd6779124b90ef5c00697815b04c9f75fd3756586commit | diff
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 <redacted>
Signed-off-by: Junio C Hamano <redacted>
compat/mmap.c diff | blob | history
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