musl - musl - an implementation of the standard library for Linux-based systems

Age	Commit message (Collapse)	Author	Lines
2014-02-25	fix readdir not to set ENOENT when directory is removed while reading	Rich Felker	-2/+7
	per POSIX, ENOENT is reserved for invalid stream position; it is an optional error and would only happen if the application performs invalid seeks on the underlying file descriptor. however, linux's getdents syscall also returns ENOENT if the directory was removed between the time it was opened and the time of the read. we need to catch this case and remap it to simple end-of-file condition (null pointer return value like an error, but no change to errno). this issue reportedly affects GNU make in certain corner cases. rather than backing up and restoring errno, I've just changed the syscall to be made in a way that doesn't affect errno (via an inline syscall rather than a call to the __getdents function). the latter still exists for the purpose of providing the public getdents alias which sets errno.
2013-12-12	include cleanups: remove unused headers and add feature test macros	Szabolcs Nagy	-6/+0

2012-04-24	ditch the priority inheritance locks; use malloc's version of lock	Rich Felker	-4/+1
	i did some testing trying to switch malloc to use the new internal lock with priority inheritance, and my malloc contention test got 20-100 times slower. if priority inheritance futexes are this slow, it's simply too high a price to pay for avoiding priority inversion. maybe we can consider them somewhere down the road once the kernel folks get their act together on this (and perferably don't link it to glibc's inefficient lock API)... as such, i've switch __lock to use malloc's implementation of lightweight locks, and updated all the users of the code to use an array with a waiter count for their locks. this should give optimal performance in the vast majority of cases, and it's simple. malloc is still using its own internal copy of the lock code because it seems to yield measurably better performance with -O3 when it's inlined (20% or more difference in the contention stress test).
2011-02-12	initial check-in, version 0.5.0v0.5.0	Rich Felker	-0/+32