refine srs script, use SIGKILL if SIGERM failed.

@@ -108,21 +108,32 @@ stop() {
     
     
     ok_msg "Stopping SRS(pid ${srs_pid})..."
     ok_msg "Stopping SRS(pid ${srs_pid})..."
     
     
-    # process exists, kill util stop
-    for((;;)); do
+    # process exists, try to kill to stop normally
+    for((i=0;i<30;i++)); do
         load_process_info
         load_process_info
         if [[ 0 -eq $? ]]; then
         if [[ 0 -eq $? ]]; then
             kill -s SIGTERM ${srs_pid} 2>/dev/null
             kill -s SIGTERM ${srs_pid} 2>/dev/null
             ret=$?; if [[ 0 -ne $ret ]]; then failed_msg "send signal SIGTERM failed ret=$ret"; return $ret; fi
             ret=$?; if [[ 0 -ne $ret ]]; then failed_msg "send signal SIGTERM failed ret=$ret"; return $ret; fi
             sleep 0.1
             sleep 0.1
         else
         else
-            ok_msg "SRS stopped"
+            ok_msg "SRS stopped by SIGTERM"
             # delete the pid file when stop success.
             # delete the pid file when stop success.
             rm -f ${pid_file}
             rm -f ${pid_file}
             break;
             break;
         fi
         fi
     done
     done
     
     
+    # process exists, use kill -9 to force to exit
+    load_process_info
+    if [[ 0 -eq $? ]]; then
+        kill -s SIGKILL ${srs_pid} 2>/dev/null
+        ret=$?; if [[ 0 -ne $ret ]]; then failed_msg "send signal SIGKILL failed ret=$ret"; return $ret; fi
+        ok_msg "SRS stopped by SIGKILL"
+    else
+        # delete the pid file when stop success.
+        rm -f ${pid_file}
+    fi
+    
     sleep 0.1
     sleep 0.1
     return 0
     return 0
 }
 }