On 2011-05-17 Thorsten Glaser wrote: > Lasse Collin dixit: > >A thread-local variable to store an error message would work with > >all > > This wouldn’t be portable at all.
To be more exact, I meant a function that would return a pointer to thread-specific char array. POSIX has pthread_key_create() and pthread_once() that can be used to implement this. I think those are fairly portable. I'm aware that Windows might give some gray hair, but I won't worry about that too much. Maybe there is a problem if liblzma is loaded with dlopen() and later unloaded with dlclose(). It could leak the memory allocated for the thread-specific data and leak the resources associated with a pthread_key_t. glibc supports destructor functions that are called before dlcose() returns. I think it would prevent this issue, but such destructors aren't portable. -- Lasse Collin | IRC: Larhzu @ IRCnet & Freenode
