diff options
Diffstat (limited to 'linuxthreads/pthread.c')
| -rw-r--r-- | linuxthreads/pthread.c | 39 |
1 files changed, 36 insertions, 3 deletions
diff --git a/linuxthreads/pthread.c b/linuxthreads/pthread.c index 81261416e2..1a2888f3c6 100644 --- a/linuxthreads/pthread.c +++ b/linuxthreads/pthread.c @@ -709,7 +709,7 @@ int pthread_equal(pthread_t thread1, pthread_t thread2) #ifndef THREAD_SELF -pthread_descr __pthread_find_self() +pthread_descr __pthread_find_self(void) { char * sp = CURRENT_STACK_FRAME; pthread_handle h; @@ -721,6 +721,21 @@ pthread_descr __pthread_find_self() return h->h_descr; } +#else + +static pthread_descr thread_self_stack(void) +{ + char *sp = CURRENT_STACK_FRAME; + pthread_handle h; + + if (sp >= __pthread_manager_thread_bos && sp < __pthread_manager_thread_tos) + return &__pthread_manager_thread; + h = __pthread_handles + 2; + while (! (sp <= (char *) h->h_descr && sp >= h->h_bottom)) + h++; + return h->h_descr; +} + #endif /* Thread scheduling */ @@ -769,7 +784,7 @@ int pthread_getschedparam(pthread_t thread, int *policy, return 0; } -int __pthread_yield () +int __pthread_yield (void) { /* For now this is equivalent with the POSIX call. */ return sched_yield (); @@ -841,8 +856,26 @@ static void pthread_handle_sigcancel(int sig) if (self == &__pthread_manager_thread) { +#ifdef THREAD_SELF + /* A new thread might get a cancel signal before it is fully + initialized, so that the thread register might still point to the + manager thread. Double check that this is really the manager + thread. */ + pthread_descr real_self = thread_self_stack(); + if (real_self == &__pthread_manager_thread) + { + __pthread_manager_sighandler(sig); + return; + } + /* Oops, thread_self() isn't working yet.. */ + self = real_self; +# ifdef INIT_THREAD_SELF + INIT_THREAD_SELF(self, self->p_nr); +# endif +#else __pthread_manager_sighandler(sig); return; +#endif } if (__builtin_expect (__pthread_exit_requested, 0)) { /* Main thread should accumulate times for thread manager and its @@ -884,7 +917,7 @@ static void pthread_handle_sigdebug(int sig) Notice that we can't free the stack segments, as the forked thread may hold pointers into them. */ -void __pthread_reset_main_thread() +void __pthread_reset_main_thread(void) { pthread_descr self = thread_self(); struct rlimit limit; |