remove unused variable warning

yahoo · Aug 29, 2014 · a097de8 · a097de8
1 parent b935a40
commit a097de8
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/monitor.cc b/src/monitor.cc
@@ -107,12 +107,15 @@ static void doSleep(int ms) {
     res = pselect(sigpipefd_r + 1, &readfds, NULL, NULL, &timeout, &blockset);
 
     // Did we exit due to a "signal" sent via the pipe (likely from another thread)
-    if (FD_ISSET(sigpipefd_r, &readfds)) {
+    if (res >= 0 && FD_ISSET(sigpipefd_r, &readfds)) {
         char c[100];
         while ((read(sigpipefd_r, &c, sizeof(c))) == sizeof(c)) {
             /* Flush the pipe! */
         }
     }
+    else {
+        perror("pselect");
+    }
 }
 
 NodeMonitor* NodeMonitor::instance_ = NULL;