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authorRoland McGrath <roland@gnu.org>2002-08-02 03:32:24 +0000
committerRoland McGrath <roland@gnu.org>2002-08-02 03:32:24 +0000
commitc2afe833521105e05298500ba5d4676d6c833242 (patch)
tree226bb6da849fe8d860b766d3c365c8cfeb99b19e /linuxthreads/pthread.c
parentae8f7f19faf701667d5e88195e3efc479c4a0746 (diff)
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* sysdeps/pthread/bits/libc-tsd.h: Include <tls.h>.
[USE_TLS && HAVE___THREAD]: Just include the sysdeps/generic file, which does the right thing when __thread support is available. * descr.h (struct _pthread_descr_struct) [USE_TLS && HAVE___THREAD]: Omit `p_libc_specific', `p_errnop', `p_errno', `p_h_errnop', `p_h_errno', `p_resp', and `p_res' members. * pthread.c (__pthread_initialize_minimal) [USE_TLS && HAVE___THREAD]: Don't initialize `p_errnop' and `p_h_errnop' members. (__pthread_reset_main_thread): Likewise. (__pthread_initialize_manager): Likewise. * manager.c (__pthread_manager, pthread_handle_create): Likewise. * pthread.c (pthread_initialize) [USE_TLS && HAVE___THREAD]: Don't initialize `p_resp' member. (__pthread_reset_main_thread): Likewise. * manager.c (pthread_handle_create): Likewise. * specific.c (libc_internal_tsd_set, libc_internal_tsd_get): Conditionalize these on [!(USE_TLS && HAVE___THREAD)]. * errno.c [USE_TLS && HAVE___THREAD] (__h_errno_location, __res_state): Don't define these at all. * sysdeps/i386/tls.h (INSTALL_DTV): Add parens around arguments! (INSTALL_NEW_DTV, GET_DTV): Likewise. * sysdeps/sh/tls.h (INSTALL_DTV, INSTALL_NEW_DTV, GET_DTV): Likewise. * weaks.c: Don't include <errno.h> here. 2002-08-01 Roland McGrath <roland@redhat.com> * sysdeps/i386/tls.h (TLS_DO_MODIFY_LDT): New macro, broken out of TLS_INIT_TP. (TLS_DO_SET_THREAD_AREA): New macro, uses thread_set_area syscall. (TLS_SETUP_GS_SEGMENT): New macro, try one or the other or both. (TLS_INIT_TP): Use that.
Diffstat (limited to 'linuxthreads/pthread.c')
-rw-r--r--linuxthreads/pthread.c49
1 files changed, 31 insertions, 18 deletions
diff --git a/linuxthreads/pthread.c b/linuxthreads/pthread.c
index 8bca63e201..3c978a5bc0 100644
--- a/linuxthreads/pthread.c
+++ b/linuxthreads/pthread.c
@@ -33,27 +33,28 @@
#include <ldsodefs.h>
#include <tls.h>
-/* We need the global/static resolver state here. */
-#include <resolv.h>
-#undef _res
-
-extern struct __res_state _res;
-
/* Sanity check. */
#if __ASSUME_REALTIME_SIGNALS && !defined __SIGRTMIN
# error "This must not happen; new kernel assumed but old headers"
#endif
-/* These variables are used by the setup code. */
-extern int _errno;
-extern int _h_errno;
-
#ifdef USE_TLS
/* We need only a few variables. */
static pthread_descr manager_thread;
#else
+
+/* These variables are used by the setup code. */
+extern int _errno;
+extern int _h_errno;
+
+/* We need the global/static resolver state here. */
+#include <resolv.h>
+#undef _res
+
+extern struct __res_state _res;
+
/* Descriptor of the initial thread */
struct _pthread_descr_struct __pthread_initial_thread = {
@@ -83,16 +84,18 @@ struct _pthread_descr_struct __pthread_initial_thread = {
0, /* char p_cancelstate */
0, /* char p_canceltype */
0, /* char p_canceled */
- &_errno, /* int *p_errnop */
- 0, /* int p_errno */
- &_h_errno, /* int *p_h_errnop */
- 0, /* int p_h_errno */
NULL, /* char * p_in_sighandler */
0, /* char p_sigwaiting */
PTHREAD_START_ARGS_INITIALIZER(NULL),
/* struct pthread_start_args p_start_args */
{NULL}, /* void ** p_specific[PTHREAD_KEY_1STLEVEL_SIZE] */
{NULL}, /* void * p_libc_specific[_LIBC_TSD_KEY_N] */
+ &_errno, /* int *p_errnop */
+ 0, /* int p_errno */
+ &_h_errno, /* int *p_h_errnop */
+ 0, /* int p_h_errno */
+ &_res, /* struct __res_state *p_resp */
+ {}, /* struct __res_state p_res */
1, /* int p_userstack */
NULL, /* void * p_guardaddr */
0, /* size_t p_guardsize */
@@ -141,16 +144,18 @@ struct _pthread_descr_struct __pthread_manager_thread = {
0, /* char p_cancelstate */
0, /* char p_canceltype */
0, /* char p_canceled */
- &__pthread_manager_thread.p_errno, /* int *p_errnop */
- 0, /* int p_errno */
- NULL, /* int *p_h_errnop */
- 0, /* int p_h_errno */
NULL, /* char * p_in_sighandler */
0, /* char p_sigwaiting */
PTHREAD_START_ARGS_INITIALIZER(__pthread_manager),
/* struct pthread_start_args p_start_args */
{NULL}, /* void ** p_specific[PTHREAD_KEY_1STLEVEL_SIZE] */
{NULL}, /* void * p_libc_specific[_LIBC_TSD_KEY_N] */
+ &__pthread_manager_thread.p_errno, /* int *p_errnop */
+ 0, /* int p_errno */
+ NULL, /* int *p_h_errnop */
+ 0, /* int p_h_errno */
+ NULL, /* struct __res_state *p_resp */
+ {}, /* struct __res_state p_res */
0, /* int p_userstack */
NULL, /* void * p_guardaddr */
0, /* size_t p_guardsize */
@@ -423,8 +428,10 @@ __pthread_initialize_minimal(void)
self->p_nextlive = self->p_prevlive = self;
self->p_tid = PTHREAD_THREADS_MAX;
self->p_lock = &__pthread_handles[0].h_lock;
+# ifndef HAVE___THREAD
self->p_errnop = &_errno;
self->p_h_errnop = &_h_errno;
+# endif
/* self->p_start_args need not be initialized, it's all zero. */
self->p_userstack = 1;
# if __LT_SPINLOCK_INIT != 0
@@ -521,8 +528,10 @@ static void pthread_initialize(void)
#ifdef USE_TLS
/* Update the descriptor for the initial thread. */
THREAD_SETMEM (((pthread_descr) NULL), p_pid, __getpid());
+# ifndef HAVE___THREAD
/* Likewise for the resolver state _res. */
THREAD_SETMEM (((pthread_descr) NULL), p_resp, &_res);
+# endif
#else
/* Update the descriptor for the initial thread. */
__pthread_initial_thread.p_pid = __getpid();
@@ -615,7 +624,9 @@ int __pthread_initialize_manager(void)
/* Initialize the descriptor. */
tcb->p_header.data.self = tcb;
tcb->p_lock = &__pthread_handles[1].h_lock;
+# ifndef HAVE___THREAD
tcb->p_errnop = &tcb->p_errno;
+# endif
tcb->p_start_args = (struct pthread_start_args) PTHREAD_START_ARGS_INITIALIZER(__pthread_manager);
tcb->p_nr = 1;
# if __LT_SPINLOCK_INIT != 0
@@ -1048,10 +1059,12 @@ void __pthread_reset_main_thread(void)
__pthread_main_thread = self;
THREAD_SETMEM(self, p_nextlive, self);
THREAD_SETMEM(self, p_prevlive, self);
+#if !(USE_TLS && HAVE___THREAD)
/* Now this thread modifies the global variables. */
THREAD_SETMEM(self, p_errnop, &_errno);
THREAD_SETMEM(self, p_h_errnop, &_h_errno);
THREAD_SETMEM(self, p_resp, &_res);
+#endif
if (getrlimit (RLIMIT_STACK, &limit) == 0
&& limit.rlim_cur != limit.rlim_max) {