docker 优雅关闭（docker stop graceful） (#2827)

server/System.cpp

@@ -126,6 +126,12 @@ void System::startDaemon(bool &kill_parent_if_failed) {
             exit(0);
         });
 
+        signal(SIGTERM,[](int) {
+            WarnL << "收到主动退出信号,关闭父进程与子进程";
+            kill(pid, SIGINT);
+            exit(0);
+        });
+
         do {
             int status = 0;
             if (waitpid(pid, &status, 0) >= 0) {

server/main.cpp

@@ -420,6 +420,12 @@ int start_main(int argc,char *argv[]) {
             sem.post();
         }); // 设置退出信号
 
+        signal(SIGTERM,[](int) {
+            WarnL << "SIGTERM:exit";
+            signal(SIGTERM, SIG_IGN);
+            sem.post();
+        });
+
 #if !defined(_WIN32)
         signal(SIGHUP, [](int) { mediakit::loadIniConfig(g_ini_file.data()); });
 #endif