ngx_process.patch

--- old/nginx-1.21.4/src/os/unix/ngx_process.c	2021-11-02 22:49:22.000000000 +0800
+++ new/nginx-1.21.4/src/os/unix/ngx_process.c	2022-05-25 18:57:17.649674515 +0800
@@ -82,7 +82,7 @@
     { 0, NULL, "", NULL }
 };

-
+int ngx_worker_index = -1;
 ngx_pid_t
 ngx_spawn_process(ngx_cycle_t *cycle, ngx_spawn_proc_pt proc, void *data,
     char *name, ngx_int_t respawn)
@@ -182,18 +182,20 @@

     ngx_process_slot = s;

-
+    ngx_worker_index++;
     pid = fork();

     switch (pid) {

     case -1:
+        ngx_worker_index--;
         ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
                       "fork() failed while spawning \"%s\"", name);
         ngx_close_channel(ngx_processes[s].channel, cycle->log);
         return NGX_INVALID_PID;

     case 0:
+        init_worker(ngx_worker_index);
         ngx_parent = ngx_pid;
         ngx_pid = ngx_getpid();
         proc(cycle, data);