diff options
author | Jakub Jelinek <jakub@redhat.com> | 2007-07-07 17:15:07 +0000 |
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committer | Jakub Jelinek <jakub@redhat.com> | 2007-07-07 17:15:07 +0000 |
commit | 542ac2393c1ca0d070fa9cce57ca2b2e562f72cc (patch) | |
tree | d17a88450a5ec0811ab35c82f003bde8a3f4a329 /nptl/allocatestack.c | |
parent | 9542710f1329c25f861435d7b96d08991e52bd6d (diff) |
2007-06-09 Ulrich Drepper <drepper@redhat.com>
* elf/do-lookup.h (do_lookup_x): Read r_nlist before r_list and
make sure gcc doesn't mess around with this.
2007-06-08 Ulrich Drepper <drepper@redhat.com>
* elf/dl-lookup.c (_dl_lookup_symbol_x): Remove use of r_nlist.
2007-06-08 Jakub Jelinek <jakub@redhat.com>
* elf/dl-close.c (_dl_close_worker): Remove all to be removed
libraries from the global scope at once and call THREAD_GSCOPE_WAIT
2007-05-18 Ulrich Drepper <drepper@redhat.com>
* elf/dl-close.c (_dl_close_worker): When removing object from
global scope, wait for all lookups to finish afterwards.
* elf/dl-open.c (add_to_global): When global scope array must
grow, allocate a new one and free old array only after all
lookups finish.
* elf/dl-runtime.c (_dl_fixup): Protect using global scope.
(_dl_lookup_symbol_x): Likewise.
* elf/dl-support.c: Define _dl_wait_lookup_done.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Add
_dl_wait_lookup_done.
nptl/
2007-05-28 Jakub Jelinek <jakub@redhat.com>
* sysdeps/i386/tls.h (THREAD_GSCOPE_RESET_FLAG): Use explicit
insn suffix.
(THREAD_GSCOPE_GET_FLAG): Remove.
* sysdeps/x86_64/tls.h (THREAD_GSCOPE_GET_FLAG): Remove.
* allocatestack.c (__wait_lookup_done): Revert 2007-05-24
changes.
* sysdeps/powerpc/tls.h (tcbhead_t): Remove gscope_flag.
(THREAD_GSCOPE_GET_FLAG): Remove.
(THREAD_GSCOPE_RESET_FLAG): Use THREAD_SELF->header.gscope_flag
instead of THREAD_GSCOPE_GET_FLAG.
(THREAD_GSCOPE_SET_FLAG): Likewise. Add atomic_write_barrier after
it.
* sysdeps/s390/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_WAIT): Define.
* sysdeps/sparc/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_WAIT): Define.
* sysdeps/sh/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_WAIT): Define.
* sysdeps/ia64/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_WAIT): Define.
2007-05-24 Richard Henderson <rth@redhat.com>
* descr.h (struct pthread): Add header.gscope_flag.
* sysdeps/alpha/tls.h (THREAD_GSCOPE_FLAG_UNUSED,
THREAD_GSCOPE_FLAG_USED, THREAD_GSCOPE_FLAG_WAIT,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_WAIT): Define.
2007-05-26 Ulrich Drepper <drepper@redhat.com>
* allocatestack.c: Revert last change.
* init.c: Likewise.
* sysdeps/i386/tls.h: Likewise.
* sysdeps/x86_64/tls.h: Likewise.
2007-05-24 Jakub Jelinek <jakub@redhat.com>
* sysdeps/powerpc/tls.h (tcbhead_t): Add gscope_flag.
(THREAD_GSCOPE_FLAG_UNUSED, THREAD_GSCOPE_FLAG_USED,
THREAD_GSCOPE_FLAG_WAIT): Define.
(THREAD_GSCOPE_GET_FLAG, THREAD_GSCOPE_SET_FLAG,
THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_WAIT): Define.
* sysdeps/i386/tls.h (THREAD_GSCOPE_WAIT): Don't use
PTR_DEMANGLE.
(THREAD_GSCOPE_GET_FLAG): Define.
* sysdeps/x86_64/tls.h (THREAD_GSCOPE_GET_FLAG): Define.
* allocatestack.c (__wait_lookup_done): Use THREAD_GSCOPE_GET_FLAG
instead of ->header.gscope_flag directly.
2007-05-21 Ulrich Drepper <drepper@redhat.com>
* sysdeps/pthread/pthread-functions.h (struct pthread_functions):
Remove ptr_wait_lookup_done again.
* init.c (pthread_functions): Don't add .ptr_wait_lookup_done here.
(__pthread_initialize_minimal_internal): Initialize
_dl_wait_lookup_done pointer in _rtld_global directly.
* sysdeps/unix/sysv/linux/libc_pthread_init.c (__libc_pthread_init):
Remove code to code _dl_wait_lookup_done.
* sysdeps/x86_64/tls.h (THREAD_GSCOPE_WAIT): The pointer is not
encrypted for now.
2007-05-19 Ulrich Drepper <drepper@redhat.com>
* allocatestack.c (__wait_lookup_done): New function.
* sysdeps/pthread/pthread-functions.h (struct pthread_functions):
Add ptr_wait_lookup_done.
* init.c (pthread_functions): Initialize .ptr_wait_lookup_done.
* pthreadP.h: Declare __wait_lookup_done.
* sysdeps/i386/tls.h (tcbhead_t): Add gscope_flag.
Define macros to implement reference handling of global scope.
* sysdeps/x86_64/tls.h: Likewise.
* sysdeps/unix/sysv/linux/libc_pthread_init.c (__libc_pthread_init):
Initialize GL(dl_wait_lookup_done).
Diffstat (limited to 'nptl/allocatestack.c')
-rw-r--r-- | nptl/allocatestack.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c index 6b60642042..e556dbac08 100644 --- a/nptl/allocatestack.c +++ b/nptl/allocatestack.c @@ -996,3 +996,60 @@ __pthread_init_static_tls (struct link_map *map) lll_unlock (stack_cache_lock); } + + +void +attribute_hidden +__wait_lookup_done (void) +{ + lll_lock (stack_cache_lock); + + struct pthread *self = THREAD_SELF; + + /* Iterate over the list with system-allocated threads first. */ + list_t *runp; + list_for_each (runp, &stack_used) + { + struct pthread *t = list_entry (runp, struct pthread, list); + if (t == self || t->header.gscope_flag == THREAD_GSCOPE_FLAG_UNUSED) + continue; + + int *const gscope_flagp = &t->header.gscope_flag; + + /* We have to wait until this thread is done with the global + scope. First tell the thread that we are waiting and + possibly have to be woken. */ + if (atomic_compare_and_exchange_bool_acq (gscope_flagp, + THREAD_GSCOPE_FLAG_WAIT, + THREAD_GSCOPE_FLAG_USED)) + continue; + + do + lll_futex_wait (gscope_flagp, THREAD_GSCOPE_FLAG_WAIT); + while (*gscope_flagp == THREAD_GSCOPE_FLAG_WAIT); + } + + /* Now the list with threads using user-allocated stacks. */ + list_for_each (runp, &__stack_user) + { + struct pthread *t = list_entry (runp, struct pthread, list); + if (t == self || t->header.gscope_flag == THREAD_GSCOPE_FLAG_UNUSED) + continue; + + int *const gscope_flagp = &t->header.gscope_flag; + + /* We have to wait until this thread is done with the global + scope. First tell the thread that we are waiting and + possibly have to be woken. */ + if (atomic_compare_and_exchange_bool_acq (gscope_flagp, + THREAD_GSCOPE_FLAG_WAIT, + THREAD_GSCOPE_FLAG_USED)) + continue; + + do + lll_futex_wait (gscope_flagp, THREAD_GSCOPE_FLAG_WAIT); + while (*gscope_flagp == THREAD_GSCOPE_FLAG_WAIT); + } + + lll_unlock (stack_cache_lock); +} |