diff options
Diffstat (limited to 'nptl/allocatestack.c')
| -rw-r--r-- | nptl/allocatestack.c | 92 |
1 files changed, 49 insertions, 43 deletions
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c index fcb6c6e475..bb27c180e6 100644 --- a/nptl/allocatestack.c +++ b/nptl/allocatestack.c @@ -1,4 +1,5 @@ -/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2004, 2005 + Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -33,7 +34,7 @@ #ifndef NEED_SEPARATE_REGISTER_STACK /* Most architectures have exactly one stack pointer. Some have more. */ -# define STACK_VARIABLES void *stackaddr +# define STACK_VARIABLES void *stackaddr = NULL /* How to pass the values to the 'create_thread' function. */ # define STACK_VARIABLES_ARGS stackaddr @@ -52,7 +53,7 @@ /* We need two stacks. The kernel will place them but we have to tell the kernel about the size of the reserved address space. */ -# define STACK_VARIABLES void *stackaddr; size_t stacksize +# define STACK_VARIABLES void *stackaddr = NULL; size_t stacksize = 0 /* How to pass the values to the 'create_thread' function. */ # define STACK_VARIABLES_ARGS stackaddr, stacksize @@ -817,6 +818,45 @@ __find_thread_by_id (pid_t tid) } #endif + +static void +internal_function +setxid_signal_thread (struct xid_command *cmdp, struct pthread *t) +{ + if (! IS_DETACHED (t)) + { + int ch; + do + { + ch = t->cancelhandling; + + /* If the thread is exiting right now, ignore it. */ + if ((ch & EXITING_BITMASK) != 0) + return; + } + while (atomic_compare_and_exchange_val_acq (&t->cancelhandling, + ch | SETXID_BITMASK, ch)); + } + + int val; +#if __ASSUME_TGKILL + val = INTERNAL_SYSCALL (tgkill, err, 3, THREAD_GETMEM (THREAD_SELF, pid), + t->tid, SIGSETXID); +#else +# ifdef __NR_tgkill + val = INTERNAL_SYSCALL (tgkill, err, 3, THREAD_GETMEM (THREAD_SELF, pid), + t->tid, SIGSETXID); + if (INTERNAL_SYSCALL_ERROR_P (val, err) + && INTERNAL_SYSCALL_ERRNO (val, err) == ENOSYS) +# endif + val = INTERNAL_SYSCALL (tkill, err, 2, t->tid, SIGSETXID); +#endif + + if (!INTERNAL_SYSCALL_ERROR_P (val, err)) + atomic_increment (&cmdp->cntr); +} + + int attribute_hidden __nptl_setxid (struct xid_command *cmdp) @@ -836,54 +876,20 @@ __nptl_setxid (struct xid_command *cmdp) list_for_each (runp, &stack_used) { struct pthread *t = list_entry (runp, struct pthread, list); - if (t != self) - { - int val; -#if __ASSUME_TGKILL - val = INTERNAL_SYSCALL (tgkill, err, 3, - THREAD_GETMEM (THREAD_SELF, pid), - t->tid, SIGSETXID); -#else -# ifdef __NR_tgkill - val = INTERNAL_SYSCALL (tgkill, err, 3, - THREAD_GETMEM (THREAD_SELF, pid), - t->tid, SIGSETXID); - if (INTERNAL_SYSCALL_ERROR_P (val, err) - && INTERNAL_SYSCALL_ERRNO (val, err) == ENOSYS) -# endif - val = INTERNAL_SYSCALL (tkill, err, 2, t->tid, SIGSETXID); -#endif + if (t == self) + continue; - if (!INTERNAL_SYSCALL_ERROR_P (val, err)) - atomic_increment (&cmdp->cntr); - } + setxid_signal_thread (cmdp, t); } /* 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) - { - int val; -#if __ASSUME_TGKILL - val = INTERNAL_SYSCALL (tgkill, err, 3, - THREAD_GETMEM (THREAD_SELF, pid), - t->tid, SIGSETXID); -#else -# ifdef __NR_tgkill - val = INTERNAL_SYSCALL (tgkill, err, 3, - THREAD_GETMEM (THREAD_SELF, pid), - t->tid, SIGSETXID); - if (INTERNAL_SYSCALL_ERROR_P (val, err) - && INTERNAL_SYSCALL_ERRNO (val, err) == ENOSYS) -# endif - val = INTERNAL_SYSCALL (tkill, err, 2, t->tid, SIGSETXID); -#endif + if (t == self) + continue; - if (!INTERNAL_SYSCALL_ERROR_P (val, err)) - atomic_increment (&cmdp->cntr); - } + setxid_signal_thread (cmdp, t); } int cur = cmdp->cntr; |