- /* Getting the pid/tid pair is not atomic, and could give wrong
- * result if a fork occurs in a signal handler between the two
- * syscalls. Use the tgkill syscall's ESRCH semantics to detect
- * this condition and retry. */
- do {
- tid = syscall0(__NR_gettid);
- pid = syscall0(__NR_getpid);
- ret = syscall3(__NR_tgkill, pid, tid, sig);
- } while (ret<0 && errno == ESRCH);
+ sigset_t set;
+ sigfillset(&set);
+ __sigprocmask(SIG_BLOCK, &set, &set);
+ tid = syscall0(__NR_gettid);
+ pid = syscall0(__NR_getpid);
+ ret = syscall3(__NR_tgkill, pid, tid, sig);
+ __sigprocmask(SIG_SETMASK, &set, 0);