From 6cbd21542cf7a751e6f0f38864e7e9eae8fa3b14 Mon Sep 17 00:00:00 2001
From: Dirk Engling <erdgeist@erdgeist.org>
Date: Tue, 27 Oct 2026 21:32:24 +0100
Subject: Plug in the new per-thread stats counter, also make sure that the
 ot_clean sleep does not stall tracker exit

---
 opentracker.c | 41 +++++++++++++++++++++++++++++------------
 1 file changed, 29 insertions(+), 12 deletions(-)

(limited to 'opentracker.c')

diff --git a/opentracker.c b/opentracker.c
index eb97b42..34b8fd5 100644
--- a/opentracker.c
+++ b/opentracker.c
@@ -43,15 +43,18 @@ uint32_t            g_tracker_id;
 _Atomic int         g_opentracker_running = 1;
 int                 g_self_pipe[2];
 
-
 static void         panic(const char *routine) __attribute__((noreturn));
 static void         panic(const char *routine) {
   fprintf(stderr, "%s: %s\n", routine, strerror(errno));
   exit(111);
 }
 
+/* Say we are stopping, wake the loop, and let main do the work on its own stack. */
 static void signal_handler(int s) {
   if (s == SIGINT) {
+    const char byte  = 0;
+    int        saved = errno;
+
     /* Any new interrupt signal quits the application */
     signal(SIGINT, SIG_DFL);
 
@@ -59,13 +62,8 @@ static void signal_handler(int s) {
        but cancel their operations and return */
     g_opentracker_running = 0;
 
-    trackerlogic_deinit();
-
-#ifdef WANT_SYSLOGS
-    closelog();
-#endif
-
-    exit(0);
+    (void)!write(g_self_pipe[1], &byte, 1);
+    errno = saved;
   }
 }
 
@@ -207,7 +205,7 @@ static void handle_write(const int64_t sock) {
     handle_dead(sock);
 }
 
-static void handle_accept(const int64_t serversocket) {
+static void handle_accept(const int64_t serversocket, struct ot_workstruct *ws) {
   struct http_data *cookie;
   int64_t           sock;
   ot_ip6            ip;
@@ -231,7 +229,7 @@ static void handle_accept(const int64_t serversocket) {
       continue;
     }
 
-    stats_issue_event(EVENT_ACCEPT, FLAG_TCP, (uintptr_t)ip);
+    stats_issue_event(ws, EVENT_ACCEPT, FLAG_TCP, (uintptr_t)ip);
   }
 }
 
@@ -248,6 +246,8 @@ static void *server_mainloop(void *args) {
   (void)args;
 
   /* Initialize our "thread local storage" */
+  memset(&ws, 0, sizeof(ws));
+  stats_counters_register(&ws);
   ws.inbuf  = malloc(G_INBUF_SIZE);
   ws.outbuf = malloc(G_OUTBUF_SIZE);
 #ifdef _DEBUG_HTTPERROR
@@ -259,7 +259,7 @@ static void *server_mainloop(void *args) {
 
   random_bytes(ws.rand48_state, sizeof(ws.rand48_state));
 
-  for (;;) {
+  while (g_opentracker_running) {
     ot_event ready[OT_EVENT_BATCH];
     int64_t  sock;
     int      count, i;
@@ -278,7 +278,7 @@ static void *server_mainloop(void *args) {
       cookie = fdstate_cookie((int)sock);
 
       if ((intptr_t)cookie == FLAG_TCP)
-        handle_accept(sock);
+        handle_accept(sock, &ws);
       else if ((intptr_t)cookie == FLAG_UDP)
         handle_udp6(sock, &ws);
       else if ((intptr_t)cookie == FLAG_SELFPIPE)
@@ -306,6 +306,16 @@ static void *server_mainloop(void *args) {
 
     livesync_ticker();
   }
+
+  /* This work struct is about to go out of scope, so hand its tally over
+     before anything can read it there */
+  stats_counters_retire(&ws);
+
+  free(ws.inbuf);
+  free(ws.outbuf);
+#ifdef _DEBUG_HTTPERROR
+  free(ws.debugbuf);
+#endif
   return 0;
 }
 
@@ -510,6 +520,13 @@ int main(int argc, char **argv) {
 
   server_mainloop(0);
 
+  /* The loop has left, so no thread is serving any more and the teardown
+     can run where a debugger and the sanitizers can follow it */
+  trackerlogic_deinit();
+#ifdef WANT_SYSLOGS
+  closelog();
+#endif
+
   event_deinit();
   fdstate_deinit();
   return 0;
-- 
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