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2003-07-22  Jakub Jelinek  <jakub@redhat.com>

	* include/resolv.h (__resp): Declare.  Define to __libc_resp
	if in libc.so.
	(_res): If USE___THREAD, define to (*__resp).
	* resolv/res_libc.c (_res): Normal .bss variable with compat_symbol
	even if USE___THREAD.
	(__resp): New __thread variable.
	(__libc_resp): New alias.
	* resolv/Versions (libc): Export _res@GLIBC_2.0 even if
	USE_TLS && HAVE___THREAD.  Export __resp@@GLIBC_PRIVATE.
	* sysdeps/generic/res-state.c (__res_state): Return __resp
	if USE___THREAD.
This commit is contained in:
Ulrich Drepper
2003-07-22 23:10:17 +00:00
parent 11bf8ce1d6
commit 0e9d624072
21 changed files with 285 additions and 34 deletions
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23
resolv/res_libc.c
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@ -68,27 +68,26 @@ res_init(void) {
/* This needs to be after the use of _res in res_init, above. */
#undef _res
#include <tls.h>
#if USE___THREAD
/* With __thread support, this per-thread variable is used in all cases. */
__thread struct __res_state _res;
extern __thread struct __res_state __libc_res __attribute__ ((alias ("_res")))
attribute_hidden;
# define _res __libc_res
#else
/* The resolver state for use by single-threaded programs.
This differs from plain `struct __res_state _res;' in that it doesn't
create a common definition, but a plain symbol that resides in .bss,
which can have an alias. */
struct __res_state _res __attribute__((section (".bss")));
#include <tls.h>
#if USE___THREAD
#undef __resp
__thread struct __res_state *__resp = &_res;
extern __thread struct __res_state *__libc_resp
__attribute__ ((alias ("__resp"))) attribute_hidden;
#endif
/* We declare this with compat_symbol so that it's not
visible at link time. Programs must use the accessor functions. */
# if defined HAVE_ELF && defined SHARED && defined DO_VERSIONING
# include <shlib-compat.h>
#if defined HAVE_ELF && defined SHARED && defined DO_VERSIONING
# include <shlib-compat.h>
compat_symbol (libc, _res, _res, GLIBC_2_0);
# endif
#endif
#include <shlib-compat.h>