debug pidfile

Signed-off-by: zhangzujian <[email protected]>

lib/daemon-unix.c

@@ -17,7 +17,7 @@
 #include <config.h>
 #include "backtrace.h"
 #include "daemon.h"
-#include "daemon-private.h"
+// #include "daemon-private.h"
 #include <errno.h>
 #include <fcntl.h>
 #include <grp.h>
@@ -29,6 +29,7 @@
 #include <sys/wait.h>
 #include <sys/stat.h>
 #include <unistd.h>
+#include <sys/types.h>
 #if HAVE_LIBCAPNG
 #include <cap-ng.h>
 #endif
@@ -490,6 +491,9 @@ daemonize_start(bool access_datapath)
 
     if (pidfile) {
         make_pidfile();
+    } else {
+        pid_t tid = gettid();
+        VLOG_WARN("pidfile %x in thread %u is NULL", &pidfile, tid);
     }
 
     /* Make sure that the unixctl commands for vlog get registered in a

lib/daemon.c

@@ -19,6 +19,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <unistd.h>
+#include <sys/types.h>
 #include "util.h"
 #include "ovs-thread.h"
 #include "openvswitch/vlog.h"
@@ -61,9 +62,14 @@ daemonize(void)
 void
 set_pidfile(const char *name)
 {
+    printf("set_pidfile(%s)\n", name);
+    VLOG_WARN("set_pidfile(%s)", name);
     assert_single_threaded();
     free(pidfile);
     pidfile = make_pidfile_name(name);
+    pid_t tid = gettid();
+    VLOG_WARN("pidfile %x in thread %u is set to %s", &pidfile, tid, pidfile);
+    printf("pidfile %x in thread %u is set to %s\n", &pidfile, tid, pidfile);
 }
 
 /* Disables self confinement. */