--- a/src/os/unix/ngx_process.c
+++ b/src/os/unix/ngx_process.c
@@ -3,7 +3,7 @@
 #include <ngx_core.h>
 
 
-static void ngx_exec_proc(ngx_cycle_t *cycle, void *data);
+static void ngx_execute_proc(ngx_cycle_t *cycle, void *data);
 
 ngx_uint_t     ngx_last_process;
 ngx_process_t  ngx_processes[NGX_MAX_PROCESSES];
@@ -13,23 +13,8 @@ ngx_pid_t ngx_spawn_process(ngx_cycle_t 
                             ngx_spawn_proc_pt proc, void *data,
                             char *name, ngx_int_t respawn)
 {
-#if 0
-    sigset_t   set, oset;
-#endif
     ngx_pid_t  pid;
 
-#if 0
-    if (respawn < 0) {
-        sigemptyset(&set);
-        sigaddset(&set, SIGCHLD);
-        if (sigprocmask(SIG_BLOCK, &set, &oset) == -1) {
-            ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
-                          "sigprocmask() failed while spawning %s", name);
-            return NGX_ERROR;
-        }
-    }
-#endif
-
     pid = fork();
 
     if (pid == -1) {
@@ -37,16 +22,6 @@ ngx_pid_t ngx_spawn_process(ngx_cycle_t 
                       "fork() failed while spawning \"%s\"", name);
     }
 
-    if (pid == -1 || pid == 0) {
-#if 0
-        if (sigprocmask(SIG_SETMASK, &oset, &set) == -1) {
-            ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
-                          "sigprocmask() failed while spawning %s", name);
-            return NGX_ERROR;
-        }
-#endif
-    }
-
     switch (pid) {
     case -1:
         return NGX_ERROR;
@@ -81,26 +56,18 @@ ngx_pid_t ngx_spawn_process(ngx_cycle_t 
     ngx_processes[ngx_last_process].exiting = 0;
     ngx_last_process++;
 
-#if 0
-    if (sigprocmask(SIG_SETMASK, &oset, &set) == -1) {
-        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
-                      "sigprocmask() failed while spawning %s", name);
-        return NGX_ERROR;
-    }
-#endif
-
     return pid;
 }
 
 
-ngx_pid_t ngx_exec(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx)
+ngx_pid_t ngx_execute(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx)
 {
-    return ngx_spawn_process(cycle, ngx_exec_proc, ctx, ctx->name,
+    return ngx_spawn_process(cycle, ngx_execute_proc, ctx, ctx->name,
                              NGX_PROCESS_DETACHED);
 }
 
 
-static void ngx_exec_proc(ngx_cycle_t *cycle, void *data)
+static void ngx_execute_proc(ngx_cycle_t *cycle, void *data)
 {
     ngx_exec_ctx_t  *ctx = data;
 
@@ -114,47 +81,6 @@ static void ngx_exec_proc(ngx_cycle_t *c
 }
 
 
-#if 0
-
-void ngx_signal_processes(ngx_cycle_t *cycle)
-{
-    ngx_uint_t  i;
-
-    for (i = 0; i < ngx_last_process; i++) {
-
-        if (ngx_processes[i].signal0 == 0) {
-            continue;
-        }
-
-#if 0
-        if (ngx_processes[i].exited) {
-            if (i != --ngx_last_process) {
-                ngx_processes[i--] = ngx_processes[ngx_last_process];
-            }
-            continue;
-        }
-#endif
-
-        ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
-                       "kill (" PID_T_FMT ", %d)" ,
-                       ngx_processes[i].pid, ngx_processes[i].signal0);
-
-        if (kill(ngx_processes[i].pid, ngx_processes[i].signal0) == -1) {
-            ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
-                          "kill(%d, %d) failed",
-                          ngx_processes[i].pid, ngx_processes[i].signal0);
-            continue;
-        }
-
-        if (ngx_processes[i].signal0 != ngx_signal_value(NGX_REOPEN_SIGNAL)) {
-            ngx_processes[i].exiting = 1;
-        }
-    }
-}
-
-#endif
-
-
 void ngx_respawn_processes(ngx_cycle_t *cycle)
 {
     ngx_uint_t  i;