| #include <unistd.h> |
| #include <signal.h> |
| #include "syscall.h" |
| #include "libc.h" |
| #include "lock.h" |
| #include "pthread_impl.h" |
| #include "aio_impl.h" |
| #include "fork_impl.h" |
| |
| static void dummy(int x) { } |
| weak_alias(dummy, __aio_atfork); |
| |
| void __post_Fork(int ret) |
| { |
| if (!ret) { |
| pthread_t self = __pthread_self(); |
| self->tid = __syscall(SYS_set_tid_address, &__thread_list_lock); |
| self->robust_list.off = 0; |
| self->robust_list.pending = 0; |
| self->next = self->prev = self; |
| __thread_list_lock = 0; |
| libc.threads_minus_1 = 0; |
| if (libc.need_locks) libc.need_locks = -1; |
| } |
| UNLOCK(__abort_lock); |
| if (!ret) __aio_atfork(1); |
| } |
| |
| pid_t _Fork(void) |
| { |
| pid_t ret; |
| sigset_t set; |
| __block_all_sigs(&set); |
| LOCK(__abort_lock); |
| #ifdef SYS_fork |
| ret = __syscall(SYS_fork); |
| #else |
| ret = __syscall(SYS_clone, SIGCHLD, 0); |
| #endif |
| __post_Fork(ret); |
| __restore_sigs(&set); |
| return __syscall_ret(ret); |
| } |