Revert: Remove unused sighandler_setup

This commit reverts ea69b64949dd2cb6cb4954b679de5d77d3034ecf

1 files changed, 6 insertions, 1 deletions

diff --git a/tdutils.c b/tdutils.c
index 693727f..0df00c3 100644
--- a/tdutils.c
+++ b/tdutils.c
@@ -44,6 +44,7 @@ static atomic_llong last_req_id = 0;
  */
 bool closing = false;
 
+static bool sighandler_setup = false;
 static pthread_t thread_sighandler;
 
 /**
@@ -88,11 +89,15 @@ static void sighandler_init() {
     if ((r = pthread_create(&thread_sighandler, NULL, &main_sighandler, NULL))) {
         LOGFEV("pthread_create", r, strerror(r));
     }
+    sighandler_setup = true;
 }
 
 static int sighandler_close() {
+    if (!sighandler_setup) return 0;
     pthread_cancel(thread_sighandler);
-    return pthread_join(thread_sighandler, NULL);
+    int r = pthread_join(thread_sighandler, NULL);
+    if (!r) sighandler_setup = false;
+    return r;
 }
 
 static int tdcb_push(long long request_id, void (*cb)(bool, struct TdObject *, struct TdError *, void *), void *cb_arg) {