Subject: Re: CVS commit: [nathanw_sa] src/lib/libpthread/arch/i386
To: Nathan J Williams <>
From: Jason R Thorpe <>
List: source-changes
Date: 01/02/2003 13:42:05
On Thu, Jan 02, 2003 at 11:32:12PM +0200, Nathan J Williams wrote:

Is this problem present in the other machdep bits of libpthread?

 > Module Name:	src
 > Committed By:	nathanw
 > Date:		Thu Jan  2 21:32:12 UTC 2003
 > Modified Files:
 > 	src/lib/libpthread/arch/i386 [nathanw_sa]: pthread_switch.S
 > Log Message:
 > Rewrite pthread__switch() and adjust pthread__locked_switch() to
 > avoid storing the new saved-context pointer while still using the old
 > stack. This avoids a race condition with pthread__find_interrupted()
 > where a thread could lose its old state if it was interrupted in a
 > certain window in pthread__switch() or pthread__locked_switch() (the
 > latter was never actually observed, but appeared possible).
 > To generate a diff of this commit:
 > cvs rdiff -r1.1.2.17 -r1.1.2.18 src/lib/libpthread/arch/i386/pthread_switch.S
 > Please note that diffs are not public domain; they are subject to the
 > copyright notices on the relevant files.

        -- Jason R. Thorpe <>