+DEFINE_PRIVATE_STRING_TABLE_LOOKUP(__signal, int);
+
+const char *signal_to_string(int signo) {
+ static __thread char buf[12];
+ const char *name;
+
+ name = __signal_to_string(signo);
+ if (name)
+ return name;
+
+ if (signo >= SIGRTMIN && signo <= SIGRTMAX)
+ snprintf(buf, sizeof(buf) - 1, "RTMIN+%d", signo - SIGRTMIN);
+ else
+ snprintf(buf, sizeof(buf) - 1, "%d", signo);
+ char_array_0(buf);
+ return buf;
+}
+
+int signal_from_string(const char *s) {
+ int signo;
+ int offset = 0;
+ unsigned u;
+
+ signo =__signal_from_string(s);
+ if (signo > 0)
+ return signo;
+
+ if (startswith(s, "RTMIN+")) {
+ s += 6;
+ offset = SIGRTMIN;
+ }
+ if (safe_atou(s, &u) >= 0) {
+ signo = (int) u + offset;
+ if (signo > 0 && signo < _NSIG)
+ return signo;
+ }
+ return -1;
+}