Hi Jake,
Quoting Jake Goerzen <jgoer...@opencsw.org> from ml.softs.gtk-gnutella.devel:
:./lib/mutex.h:108:16: error: redefinition of 'struct mutex'
: typedef struct mutex {
OK, renamed it as "struct lmutex" in the library, to avoid this conflict.
:Looks like mutex.h header in gtk-gnutella source is redefining what is
:in Solaris system headers /usr/include/sys/mutex.h. I suppose there is
:no mutex.h in Linux?, so no check is done to look for it as a system header?
No, gtk-gnutella uses its own mutexes, which are built on top of our own
spinlocks. This allows lots of possibilities for the code:
- Ability to detect deadlocks and dump lock stacks.
- Ability to define safe inter-thread signals.
- Ability to trace where a mutex / spinlock was grabbed.
- Ability to ensure that a memory location is indeed a valid mutex / spinlock.
That's why the library includes this "mutex layer" and I named the structure
"mutex" because it worked on all the systems to which I had access to, namely
Linux, FreeBSD and Windows... And I also check on OS/X, albeit not directly
because I do not own any OS/X machine.
Thanks for running the "portability test" on Solaris!
Because gtk-gnutella defines its own thread layer on top of POSIX threads,
(and that includes low-level objects such as condition variables, and other
high-level constructs such as safe inter-thread signals) you may discover
some problems when running gtk-gnutella even if the code compiles fine.
Should that happens, I will ask you to use the "thread-test" program (held in
src/lib) to help me diagnose what could be failing.
Cheers,
Raphael
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