diff options
Diffstat (limited to 'libc/stdlib/abort.c')
| -rw-r--r-- | libc/stdlib/abort.c | 100 |
1 files changed, 50 insertions, 50 deletions
diff --git a/libc/stdlib/abort.c b/libc/stdlib/abort.c index 74b0dca50..9e789db34 100644 --- a/libc/stdlib/abort.c +++ b/libc/stdlib/abort.c @@ -61,70 +61,70 @@ Cambridge, MA 02139, USA. */ extern void _exit __P((int __status)) __attribute__ ((__noreturn__)); static int been_there_done_that = 0; -/* Be prepared in case multiple threads try to abort(). */ +/* Be prepared in case multiple threads try to abort() */ #ifdef __UCLIBC_HAS_THREADS__ -#include <pthread.h> +# include <pthread.h> static pthread_mutex_t mylock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; # define LOCK __pthread_mutex_lock(&mylock) -# define UNLOCK __pthread_mutex_unlock(&mylock); +# define UNLOCK __pthread_mutex_unlock(&mylock) #else # define LOCK # define UNLOCK #endif -/* Cause an abnormal program termination with core-dump. */ +/* Cause an abnormal program termination with core-dump */ void abort(void) { - sigset_t sigset; + sigset_t sigset; - /* Make sure we acquire the lock before proceeding. */ - LOCK; + /* Make sure we acquire the lock before proceeding */ + LOCK; - /* Unmask SIGABRT to be sure we can get it */ - if (__sigemptyset(&sigset) == 0 && __sigaddset(&sigset, SIGABRT) == 0) { - sigprocmask(SIG_UNBLOCK, &sigset, (sigset_t *) NULL); - } - - while (1) { - /* Try to suicide with a SIGABRT. */ - if (been_there_done_that == 0) { - been_there_done_that++; -abort_it: - UNLOCK; - raise(SIGABRT); - LOCK; - } - - /* Still here? Try to remove any signal handlers. */ - if (been_there_done_that == 1) { - struct sigaction act; - - been_there_done_that++; - memset (&act, '\0', sizeof (struct sigaction)); - act.sa_handler = SIG_DFL; - __sigfillset (&act.sa_mask); - act.sa_flags = 0; - sigaction (SIGABRT, &act, NULL); - - goto abort_it; - } - - /* Still here? Try to suicide with an illegal instruction */ - if (been_there_done_that == 2) { - been_there_done_that++; - ABORT_INSTRUCTION; + /* Unmask SIGABRT to be sure we can get it */ + if (__sigemptyset(&sigset) == 0 && __sigaddset(&sigset, SIGABRT) == 0) { + sigprocmask(SIG_UNBLOCK, &sigset, (sigset_t *) NULL); } - /* Still here? Try to at least exit */ - if (been_there_done_that == 3) { - been_there_done_that++; - _exit (127); + while (1) { + /* Try to suicide with a SIGABRT */ + if (been_there_done_that == 0) { + been_there_done_that++; +abort_it: + UNLOCK; + raise(SIGABRT); + LOCK; + } + + /* Still here? Try to remove any signal handlers */ + if (been_there_done_that == 1) { + struct sigaction act; + + been_there_done_that++; + memset(&act, '\0', sizeof(struct sigaction)); + act.sa_handler = SIG_DFL; + __sigfillset(&act.sa_mask); + act.sa_flags = 0; + sigaction(SIGABRT, &act, NULL); + + goto abort_it; + } + + /* Still here? Try to suicide with an illegal instruction */ + if (been_there_done_that == 2) { + been_there_done_that++; + ABORT_INSTRUCTION; + } + + /* Still here? Try to at least exit */ + if (been_there_done_that == 3) { + been_there_done_that++; + _exit(127); + } + + /* Still here? We're screwed. Sleepy time. Good night. */ + while (1) + /* Try for ever and ever */ + ABORT_INSTRUCTION; } - - /* Still here? We're screwed. Sleepy time. Good night */ - while (1) - /* Try for ever and ever. */ - ABORT_INSTRUCTION; - } } |