CVS log for src/lib/libpthread/res_state.c

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Pull up following revision(s) (requested by riastradh in ticket #1930):

	lib/libpthread/res_state.c: revision 1.8

libpthread: Zero-initialize res_state objects.
PR lib/58888

Pull up following revision(s) (requested by riastradh in ticket #1029):

	lib/libpthread/res_state.c: revision 1.8

libpthread: Zero-initialize res_state objects.
PR lib/58888

libpthread: Zero-initialize res_state objects.

PR lib/58888

libpthread: Move namespacing include to top of .c files.

Stuff like libc's namespace.h, or atomic_op_namespace.h, which does
namespacing tricks like `#define atomic_cas_uint _atomic_cas_uint',
has to go at the top of each .c file.  If it goes in the middle, it
might be too late to affect the declarations, and result in compile
errors.

I tripped over this by including <sys/atomic.h> in mips
<machine/lock.h>.

(Maybe we should create a new pthread_namespace.h file for the
purpose, but this'll do for now.)

sync with head.

Remove clause 3 and 4 from TNF licenses

file res_state.c was added on branch christos-time_t on 2008-04-28 20:23:03 +0000

Remove clause 3 and 4 from TNF licenses

sync with HEAD

For PR bin/37347:

- Override __libc_thr_init() instead of using our own constructor.
- Add pthread__getenv() and use instead of getenv(). This is used before
  we are up and running and unfortunatley getenv() takes locks.

Other changes:

- Cache the spinlock vectors in pthread__st. Internal spinlock operations
  now take 1 function call instead of 3 (i386).
- Use pthread__self() internally, not pthread_self().
- Use __attribute__ ((visibility("hidden"))) in some places.
- Kill PTHREAD_MAIN_DEBUG.

simplify and make more efficient (YAMAMOTO Takashi)

Oops, forgot to commit this.

Provide access to _res in the non-threaded case, and abort in the threaded
case.

add pool code for res state.
XXX: could be more efficient.