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| author | Ulrich Drepper <drepper@redhat.com> | 2005-10-01 17:20:34 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2005-10-01 17:20:34 +0000 |
| commit | dff9a7a163e9f5e28f36f9a701acf74f8f9d7968 (patch) | |
| tree | ff9dbb35ab56c666e5d3f2a22bd067a8cf1fd54b /nptl/pthread_create.c | |
| parent | 2ff89ea46f2c817ad7dd5ce5dc0cc1119da861b6 (diff) | |
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2005-10-01 Ulrich Drepper <drepper@redhat.com>
Jakub Jelinek <jakub@redhat.com>
* descr.h: Define SETXID_BIT and SETXID_BITMASK. Adjust
CANCEL_RESTMASK.
(struct pthread): Move specific_used field to avoid padding.
Add setxid_futex field.
* init.c (sighandler_setxid): Reset setxid flag and release the
setxid futex.
* allocatestack.c (setxid_signal_thread): New function. Broken
out of the bodies of the two loops in __nptl_setxid. For undetached
threads check whether they are exiting and if yes, don't send a signal.
(__nptl_setxid): Simplify loops by using setxid_signal_thread.
* pthread_create.c (start_thread): For undetached threads, check
whether setxid bit is set. If yes, wait until signal has been
processed.
* allocatestack.c (STACK_VARIABLES): Initialize them.
* pthread_create.c (__pthread_create_2_1): Initialize pd.
Diffstat (limited to 'nptl/pthread_create.c')
| -rw-r--r-- | nptl/pthread_create.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/nptl/pthread_create.c b/nptl/pthread_create.c index 122778bddf..f2f206be5a 100644 --- a/nptl/pthread_create.c +++ b/nptl/pthread_create.c @@ -314,6 +314,17 @@ start_thread (void *arg) if (IS_DETACHED (pd)) /* Free the TCB. */ __free_tcb (pd); + else if (__builtin_expect (pd->cancelhandling & SETXID_BITMASK, 0)) + { + /* Some other thread might call any of the setXid functions and expect + us to reply. In this case wait until we did that. */ + do + lll_futex_wait (&pd->setxid_futex, 0); + while (pd->cancelhandling & SETXID_BITMASK); + + /* Reset the value so that the stack can be reused. */ + pd->setxid_futex = 0; + } /* We cannot call '_exit' here. '_exit' will terminate the process. @@ -354,7 +365,7 @@ __pthread_create_2_1 (newthread, attr, start_routine, arg) accessing far-away memory. */ iattr = &default_attr; - struct pthread *pd; + struct pthread *pd = NULL; int err = ALLOCATE_STACK (iattr, &pd); if (__builtin_expect (err != 0, 0)) /* Something went wrong. Maybe a parameter of the attributes is |