Re: [libvirt] PATCH: 15/25: Prohibit non-threadsafe POSIX apis
On Tue, Jan 13, 2009 at 05:44:51PM +0000, Daniel P. Berrange wrote:
The readdir one is also unneccessary, since reading from a single
DIR* is safe from a single thread. readdir_r is also horrific
http://womble.decadentplace.org.uk/readdir_r-advisory.html
That web page also says that readdir isn't thread safe, in that an
implementation could still use some global state (outside of the
DIR*):
<quote>
Programs using readdir_r may be able to use readdir. According to
POSIX the buffer readdir uses is not shared between directory
streams. However readdir is not guaranteed to be thread-safe and some
implementations may use global state, so for portability the use of
readdir in a multithreaded program should be controlled using a mutex.
</quote>
Rich.
--
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