This is the mail archive of the ecos-discuss@sources.redhat.com mailing list for the eCos project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: POSIX close() issue


"Steve Strublic" <SStrublic@hypercom.com> writes:

> 
> My question is, why perform the FILEIO_MUTEX_LOCK at all in cyg_fp_free()?  cyg_file_lock()
> conditionally performs FILEIO_MUTEX_LOCK if the file's syncmode is CYG_SYNCMODE_IO_FILE.

These are locks on different mutexes. In cyg_fp_free() it is locking
fdlock which protects the file descriptors and file objects. In
cyg_file_lock() the lock is in the file object itself.

> 
> Or why not also condition performing the mutex lock on this same syncmode?
> 
> Or am I doing something illegal???

Unfortunately you are. The FILEIO system was not implemented with the
idea that filesystem implementations would call back into it. 

-- 
Nick Garnett                    eCos Kernel Architect
http://www.ecoscentric.com      The eCos and RedBoot experts


-- 
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]