[RFC]: Thread safety in __sfp and atexit
Mon Jan 19 21:20:00 GMT 2004
The list operations in __sfp and atexit are not thread safe AFAICS.
This could be avoided by using a mutex or atomic instructions when a
FILE pointer is acquired or an atexit function is added.
The problem hereby is that such a mutex should be created on newlib
initialization (_REENT_INIT on the _impure_ptr for example), but there
might be better locations.
Doing list insert with atomic instructions on the other hand is easy on
i86 (i486 and above) but might be a problem on other platfomrs.
Comments are welcome.
More information about the Newlib