diff --git a/src/os/unix/ngx_aio_read.c b/src/os/unix/ngx_aio_read.c
index 1fc020d..8430188 100644
--- a/src/os/unix/ngx_aio_read.c
+++ b/src/os/unix/ngx_aio_read.c
@@ -25,7 +25,7 @@
     rev = c->read;
 
     if (!rev->ready) {
-        ngx_log_error(NGX_LOG_ALERT, c->log, 0, "SECOND AIO POST");
+        ngx_log_error(NGX_LOG_ALERT, c->log, 0, "second aio post");
         return NGX_AGAIN;
     }
 
diff --git a/src/os/unix/ngx_files.c b/src/os/unix/ngx_files.c
index c2a2c8f..c90a437 100644
--- a/src/os/unix/ngx_files.c
+++ b/src/os/unix/ngx_files.c
@@ -1,10 +1,6 @@
 
 #include <ngx_config.h>
 #include <ngx_core.h>
-#include <ngx_hunk.h>
-#include <ngx_array.h>
-#include <ngx_file.h>
-#include <ngx_files.h>
 
 
 ssize_t ngx_read_file(ngx_file_t *file, char *buf, size_t size, off_t offset)
diff --git a/src/os/unix/ngx_files.h b/src/os/unix/ngx_files.h
index 09fc856..641ccfa 100644
--- a/src/os/unix/ngx_files.h
+++ b/src/os/unix/ngx_files.h
@@ -3,11 +3,7 @@
 
 
 #include <ngx_config.h>
-
-#include <ngx_types.h>
-#include <ngx_alloc.h>
-#include <ngx_hunk.h>
-#include <ngx_file.h>
+#include <ngx_core.h>
 
 
 #define NGX_INVALID_FILE         -1
diff --git a/src/os/unix/ngx_os.h b/src/os/unix/ngx_os.h
index 90d2539..85e5dbe 100644
--- a/src/os/unix/ngx_os.h
+++ b/src/os/unix/ngx_os.h
@@ -49,6 +49,8 @@
 extern int          ngx_inherited_nonblocking;
 
 
+#if 0
+
 extern ngx_int_t    ngx_process;
 extern ngx_pid_t    ngx_new_binary;
 
@@ -62,6 +64,8 @@
 extern ngx_int_t    ngx_reopen;
 extern ngx_int_t    ngx_change_binary;
 
+#endif
+
 
 #ifdef __FreeBSD__
 #include <ngx_freebsd.h>
diff --git a/src/os/unix/ngx_process.h b/src/os/unix/ngx_process.h
index bc68a05..62c6b90 100644
--- a/src/os/unix/ngx_process.h
+++ b/src/os/unix/ngx_process.h
@@ -29,10 +29,6 @@
 } ngx_exec_ctx_t;
 
 
-#define NGX_PROCESS_SINGLE   0
-#define NGX_PROCESS_MASTER   1
-#define NGX_PROCESS_WORKER   2
-
 #define NGX_MAX_PROCESSES  1024
 
 #define NGX_PROCESS_NORESPAWN  -1
diff --git a/src/os/unix/ngx_process_cycle.c b/src/os/unix/ngx_process_cycle.c
new file mode 100644
index 0000000..8e8bec6
--- /dev/null
+++ b/src/os/unix/ngx_process_cycle.c
@@ -0,0 +1,517 @@
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_event.h>
+
+
+static void ngx_master_exit(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx);
+static void ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data);
+#if (NGX_THREADS)
+static int ngx_worker_thread_cycle(void *data);
+#endif
+
+
+ngx_int_t     ngx_process;
+ngx_pid_t     ngx_pid;
+ngx_pid_t     ngx_new_binary;
+ngx_int_t     ngx_inherited;
+
+sig_atomic_t  ngx_reap;
+sig_atomic_t  ngx_timer;
+sig_atomic_t  ngx_terminate;
+sig_atomic_t  ngx_quit;
+sig_atomic_t  ngx_noaccept;
+sig_atomic_t  ngx_reconfigure;
+sig_atomic_t  ngx_reopen;
+sig_atomic_t  ngx_change_binary;
+
+
+/* TODO: broken NGX_PROCESS_SINGLE */
+
+void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
+{
+    int                signo;
+    sigset_t           set;
+    struct timeval     tv;
+    struct itimerval   itv;
+    ngx_uint_t         i, live;
+    ngx_msec_t         delay;
+    ngx_core_conf_t   *ccf;
+
+    sigemptyset(&set);
+    sigaddset(&set, SIGCHLD);
+    sigaddset(&set, SIGALRM);
+    sigaddset(&set, SIGINT);
+    sigaddset(&set, ngx_signal_value(NGX_RECONFIGURE_SIGNAL));
+    sigaddset(&set, ngx_signal_value(NGX_REOPEN_SIGNAL));
+    sigaddset(&set, ngx_signal_value(NGX_NOACCEPT_SIGNAL));
+    sigaddset(&set, ngx_signal_value(NGX_TERMINATE_SIGNAL));
+    sigaddset(&set, ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
+    sigaddset(&set, ngx_signal_value(NGX_CHANGEBIN_SIGNAL));
+
+    if (sigprocmask(SIG_BLOCK, &set, NULL) == -1) {
+        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+                      "sigprocmask() failed");
+    }
+
+    sigemptyset(&set);
+
+    ngx_setproctitle("master process");
+
+    ngx_new_binary = 0;
+    delay = 0;
+    signo = 0;
+    live = 0;
+
+    for ( ;; ) {
+        ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "new cycle");
+
+        if (ngx_process == NGX_PROCESS_MASTER) {
+            ngx_spawn_process(cycle, ngx_worker_process_cycle, NULL,
+                              "worker process", NGX_PROCESS_RESPAWN);
+
+            /*
+             * we have to limit the maximum life time of the worker processes
+             * by 1 month because our millisecond event timer is limited
+             * by 49 days on 32-bit platforms
+             */
+
+            itv.it_interval.tv_sec = 0;
+            itv.it_interval.tv_usec = 0;
+            itv.it_value.tv_sec = 30 * 24 * 60 * 60;
+            itv.it_value.tv_usec = 0;
+
+            if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
+                ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+                              "setitimer() failed");
+            }
+
+            live = 1;
+
+        } else {
+            ngx_init_temp_number();
+
+            for (i = 0; ngx_modules[i]; i++) {
+                if (ngx_modules[i]->init_process) {
+                    if (ngx_modules[i]->init_process(cycle) == NGX_ERROR) {
+                        /* fatal */
+                        exit(1);
+                    }
+                }
+            }
+        }
+
+        ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx,
+                                               ngx_core_module);
+
+        /* a cycle with the same configuration because a new one is invalid */
+
+        for ( ;; ) {
+
+            /* an event loop */
+
+            for ( ;; ) {
+
+                if (ngx_process == NGX_PROCESS_MASTER) {
+                    if (delay) {
+                        delay *= 2;
+
+                        ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
+                                       "temination cycle: %d", delay);
+
+                        itv.it_interval.tv_sec = 0;
+                        itv.it_interval.tv_usec = 0;
+                        itv.it_value.tv_sec = delay / 1000;
+                        itv.it_value.tv_usec = (delay % 1000 ) * 1000;
+
+                        if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
+                            ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+                                          "setitimer() failed");
+                        }
+                    }
+
+                    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
+                                   "sigsuspend");
+
+                    sigsuspend(&set);
+
+                    ngx_gettimeofday(&tv);
+                    ngx_time_update(tv.tv_sec);
+
+                    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
+                                   "wake up");
+
+                } else { /* NGX_PROCESS_SINGLE */
+                    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
+                                   "worker cycle");
+
+                    ngx_process_events(cycle->log);
+                    live = 0;
+                }
+
+                if (ngx_reap) {
+                    ngx_reap = 0;
+                    ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
+                                   "reap childs");
+
+                    live = 0;
+                    for (i = 0; i < ngx_last_process; i++) {
+
+                        ngx_log_debug5(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
+                                       "child: " PID_T_FMT
+                                       " e:%d t:%d d:%d r:%d",
+                                       ngx_processes[i].pid,
+                                       ngx_processes[i].exiting,
+                                       ngx_processes[i].exited,
+                                       ngx_processes[i].detached,
+                                       ngx_processes[i].respawn);
+
+                        if (ngx_processes[i].exited) {
+
+                            if (ngx_processes[i].respawn
+                                && !ngx_processes[i].exiting
+                                && !ngx_terminate
+                                && !ngx_quit)
+                            {
+                                 if (ngx_spawn_process(cycle,
+                                                       ngx_processes[i].proc,
+                                                       ngx_processes[i].data,
+                                                       ngx_processes[i].name, i)
+                                                                  == NGX_ERROR)
+                                 {
+                                     ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
+                                                   "can not respawn %s",
+                                                   ngx_processes[i].name);
+                                     continue;
+                                 }
+
+                                 live = 1;
+
+                                 continue;
+                            }
+
+                            if (ngx_processes[i].pid == ngx_new_binary) {
+                                ngx_new_binary = 0;
+
+                                /* TODO: if (ngx_noaccept) ngx_configure = 1 */
+                            }
+
+                            if (i != --ngx_last_process) {
+                                ngx_processes[i--] =
+                                               ngx_processes[ngx_last_process];
+                            }
+
+                        } else if (ngx_processes[i].exiting
+                                   || !ngx_processes[i].detached)
+                        {
+                            live = 1;
+                        }
+                    }
+                }
+
+                if (!live && (ngx_terminate || ngx_quit)) {
+                    ngx_master_exit(cycle, ctx);
+                }
+
+                if (ngx_terminate) {
+                    if (delay == 0) {
+                        delay = 50;
+                    }
+
+                    if (delay > 1000) {
+                        signo = SIGKILL;
+                    } else {
+                        signo = ngx_signal_value(NGX_TERMINATE_SIGNAL);
+                    }
+
+                } else if (ngx_quit) {
+                    signo = ngx_signal_value(NGX_SHUTDOWN_SIGNAL);
+
+                } else if (ngx_timer) {
+                    signo = ngx_signal_value(NGX_SHUTDOWN_SIGNAL);
+
+                } else {
+
+                    if (ngx_noaccept) {
+                        signo = ngx_signal_value(NGX_SHUTDOWN_SIGNAL);
+                    }
+
+                    if (ngx_change_binary) {
+                        ngx_change_binary = 0;
+                        ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
+                                      "changing binary");
+                        ngx_new_binary = ngx_exec_new_binary(cycle, ctx->argv);
+                    }
+
+                    if (ngx_reconfigure) {
+                        signo = ngx_signal_value(NGX_SHUTDOWN_SIGNAL);
+                        ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
+                                      "reconfiguring");
+                    }
+
+                    if (ngx_reopen) {
+                        if (ngx_process == NGX_PROCESS_MASTER) {
+                            if (ccf->worker_reopen != 0) {
+                                signo = ngx_signal_value(NGX_REOPEN_SIGNAL);
+                                ngx_reopen = 0;
+
+                            } else if (ngx_noaccept) {
+                                ngx_reopen = 0;
+
+                            } else {
+                                signo = ngx_signal_value(NGX_SHUTDOWN_SIGNAL);
+                            }
+
+                        } else { /* NGX_PROCESS_SINGLE */
+                            ngx_reopen = 0;
+                        }
+
+                        ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
+                                      "reopening logs");
+                        ngx_reopen_files(cycle,
+                             ccf->worker_reopen != 0 ? ccf->user : (uid_t) -1);
+                    }
+                }
+
+                if (signo) {
+                    for (i = 0; i < ngx_last_process; i++) {
+
+                        if (ngx_processes[i].detached) {
+                            continue;
+                        }
+
+                        ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
+                                       "kill (" PID_T_FMT ", %d)" ,
+                                       ngx_processes[i].pid, signo);
+
+                        if (kill(ngx_processes[i].pid, signo) == -1) {
+                            ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+                                          "kill(%d, %d) failed",
+                                          ngx_processes[i].pid, signo);
+                            continue;
+                        }
+
+                        if (signo != ngx_signal_value(NGX_REOPEN_SIGNAL)) {
+                            ngx_processes[i].exiting = 1;
+                        }
+                    }
+
+                    signo = 0;
+                }
+
+                if (ngx_reopen || ngx_reconfigure || ngx_timer) {
+                    break;
+                }
+            }
+
+            if (ngx_reopen) {
+                ngx_reopen = 0;
+
+            } else if (ngx_timer) {
+                ngx_timer = 0;
+
+            } else if (ngx_noaccept) {
+                ngx_noaccept = 0;
+                ngx_reconfigure = 0;
+
+            } else {
+                cycle = ngx_init_cycle(cycle);
+                if (cycle == NULL) {
+                    cycle = (ngx_cycle_t *) ngx_cycle;
+                    continue;
+                }
+
+                ngx_cycle = cycle;
+                ngx_reconfigure = 0;
+            }
+
+            break;
+        }
+    }
+}
+
+
+static void ngx_master_exit(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
+{
+    char  *name;
+
+    if (ngx_inherited && getppid() > 1) {
+        name = ctx->pid.name.data;
+
+    } else {
+        name = ctx->name;
+    }
+
+    if (ngx_delete_file(name) == NGX_FILE_ERROR) {
+        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+                      ngx_delete_file_n " \"%s\" failed", name);
+    }
+
+    ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "exit");
+    exit(0);
+}
+
+
+static void ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data)
+{
+    sigset_t          set;
+    ngx_int_t         i;
+    ngx_listening_t  *ls;
+    ngx_core_conf_t  *ccf;
+#if (NGX_THREADS)
+    ngx_tid_t         tid;
+#endif
+
+    ngx_process = NGX_PROCESS_WORKER;
+    ngx_last_process = 0;
+
+    ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
+
+    if (ccf->group != (gid_t) NGX_CONF_UNSET) {
+        if (setuid(ccf->group) == -1) {
+            ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
+                          "setgid(%d) failed", ccf->group);
+            /* fatal */
+            exit(2);
+        }
+    }
+
+    if (ccf->user != (uid_t) NGX_CONF_UNSET && geteuid() == 0) {
+        if (setuid(ccf->user) == -1) {
+            ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
+                          "setuid(%d) failed", ccf->user);
+            /* fatal */
+            exit(2);
+        }
+    }
+
+#if (HAVE_PR_SET_DUMPABLE)
+
+    /* allow coredump after setuid() in Linux 2.4.x */
+
+    if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1) {
+        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+                      "prctl(PR_SET_DUMPABLE) failed");
+    }
+
+#endif
+
+    sigemptyset(&set);
+
+    if (sigprocmask(SIG_SETMASK, &set, NULL) == -1) {
+        ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
+                      "sigprocmask() failed");
+    }
+
+    ngx_init_temp_number();
+
+    /*
+     * disable deleting previous events for the listening sockets because
+     * in the worker processes there are no events at all at this point
+     */ 
+    ls = cycle->listening.elts;
+    for (i = 0; i < cycle->listening.nelts; i++) {
+        ls[i].remain = 0;
+    }
+
+    for (i = 0; ngx_modules[i]; i++) {
+        if (ngx_modules[i]->init_process) {
+            if (ngx_modules[i]->init_process(cycle) == NGX_ERROR) {
+                /* fatal */
+                exit(1);
+            }
+        }
+    }
+
+    ngx_setproctitle("worker process");
+
+#if (NGX_THREADS)
+
+    if (ngx_init_threads(5, 128 * 1024 * 1024, cycle) == NGX_ERROR) {
+        /* fatal */
+        exit(1);
+    }
+
+    for (i = 0; i < 1; i++) {
+        if (ngx_create_thread(&tid, ngx_worker_thread_cycle,
+                              cycle, cycle->log) != 0)
+        {
+            /* fatal */
+            exit(1);
+        }
+    }
+
+#endif
+
+    for ( ;; ) {
+        ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "worker cycle");
+
+        ngx_process_events(cycle->log);
+
+        if (ngx_terminate) {
+            ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "exiting");
+            exit(0);
+        }
+
+        if (ngx_quit) {
+            ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
+                          "gracefully shutting down");
+            ngx_setproctitle("worker process is shutting down");
+            break;
+        }
+
+        if (ngx_reopen) {
+            ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "reopen logs");
+            ngx_reopen_files(cycle, -1);
+            ngx_reopen = 0;
+        }
+    }
+
+    ngx_close_listening_sockets(cycle);
+
+    for ( ;; ) {
+        if (ngx_event_timer_rbtree == &ngx_event_timer_sentinel) {
+            ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "exiting");
+            exit(0);
+        }
+
+        ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "worker cycle");
+
+        ngx_process_events(cycle->log);
+
+        if (ngx_reopen) {
+            ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "reopen logs");
+            ngx_reopen_files(cycle, -1);
+            ngx_reopen = 0;
+        }
+    }
+}
+
+
+#if (NGX_THREADS)
+
+int ngx_worker_thread_cycle(void *data)
+{
+    ngx_cycle_t *cycle = data;
+
+    struct timeval  tv;
+
+    /* STUB */
+
+    ngx_log_debug1(NGX_LOG_DEBUG_CORE, ngx_cycle->log, ngx_errno,
+                   "thread %d started", ngx_thread_self());
+
+    ngx_setproctitle("worker thread");
+
+    sleep(5);
+
+    ngx_gettimeofday(&tv);
+    ngx_time_update(tv.tv_sec);
+
+    ngx_log_debug1(NGX_LOG_DEBUG_CORE, ngx_cycle->log, ngx_errno,
+                   "thread %d done", ngx_thread_self());
+
+    return 1;
+}
+
+#endif
diff --git a/src/os/unix/ngx_process_cycle.h b/src/os/unix/ngx_process_cycle.h
new file mode 100644
index 0000000..c863b62
--- /dev/null
+++ b/src/os/unix/ngx_process_cycle.h
@@ -0,0 +1,40 @@
+#ifndef _NGX_PROCESS_CYCLE_H_INCLUDED_
+#define _NGX_PROCESS_CYCLE_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+typedef struct {
+     ngx_file_t    pid;
+     char         *name;
+     int           argc;
+     char *const  *argv;
+} ngx_master_ctx_t;
+
+
+#define NGX_PROCESS_SINGLE   0
+#define NGX_PROCESS_MASTER   1
+#define NGX_PROCESS_WORKER   2
+
+
+void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx);
+
+
+extern ngx_int_t       ngx_process;
+extern ngx_pid_t       ngx_pid;
+extern ngx_pid_t       ngx_new_binary;
+extern ngx_int_t       ngx_inherited;
+
+extern sig_atomic_t    ngx_reap;
+extern sig_atomic_t    ngx_timer;
+extern sig_atomic_t    ngx_quit;
+extern sig_atomic_t    ngx_terminate;
+extern sig_atomic_t    ngx_noaccept;
+extern sig_atomic_t    ngx_reconfigure;
+extern sig_atomic_t    ngx_reopen;
+extern sig_atomic_t    ngx_change_binary;
+
+
+#endif /* _NGX_PROCESS_CYCLE_H_INCLUDED_ */
diff --git a/src/os/unix/ngx_user.h b/src/os/unix/ngx_user.h
new file mode 100644
index 0000000..0aed208
--- /dev/null
+++ b/src/os/unix/ngx_user.h
@@ -0,0 +1,13 @@
+#ifndef _NGX_USER_H_INCLUDED_
+#define _NGX_USER_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+typedef uid_t  ngx_uid_t;
+typedef gid_t  ngx_gid_t;
+
+
+#endif /* _NGX_USER_H_INCLUDED_ */
diff --git a/src/os/win32/ngx_errno.h b/src/os/win32/ngx_errno.h
index 179cbbc..a7acf53 100644
--- a/src/os/win32/ngx_errno.h
+++ b/src/os/win32/ngx_errno.h
@@ -17,10 +17,13 @@
 #define NGX_EACCES                 ERROR_ACCESS_DENIED
 #define NGX_EEXIST                 ERROR_FILE_EXISTS
 #define NGX_ENOTDIR                ERROR_PATH_NOT_FOUND
+#define NGX_EPIPE                  EPIPE
 #define NGX_EAGAIN                 WSAEWOULDBLOCK
 #define NGX_EINPROGRESS            WSAEINPROGRESS
 #define NGX_EADDRINUSE             WSAEADDRINUSE
-#define NGX_ECONNRESET             ECONNRESET
+#define NGX_ECONNABORTED           WSAECONNABORTED
+#define NGX_ECONNRESET             WSAECONNRESET
+#define NGX_ENOTCONN               WSAENOTCONN
 #define NGX_ETIMEDOUT              WSAETIMEDOUT
 #define NGX_ENOMOREFILES           ERROR_NO_MORE_FILES
 
diff --git a/src/os/win32/ngx_files.h b/src/os/win32/ngx_files.h
index 1268d47..1b13f4c 100644
--- a/src/os/win32/ngx_files.h
+++ b/src/os/win32/ngx_files.h
@@ -21,8 +21,6 @@
 #define NGX_FILE_ERROR              0
 
 
-#define STDERR_FILENO               (HANDLE) 2
-
 
 #define ngx_open_file(name, access, create)                                 \
             CreateFile(name, access,                                        \
diff --git a/src/os/win32/ngx_os.h b/src/os/win32/ngx_os.h
index 212d57f..39af212 100644
--- a/src/os/win32/ngx_os.h
+++ b/src/os/win32/ngx_os.h
@@ -46,8 +46,13 @@
 extern int          ngx_win32_version;
 
 
-extern int          reconfigure;
-extern int          reopen;
+extern ngx_int_t    ngx_process;
+
+extern ngx_int_t    ngx_quit;
+extern ngx_int_t    ngx_terminate;
+
+extern ngx_int_t    ngx_reconfigure;
+extern ngx_int_t    ngx_reopen;
 
 
 
diff --git a/src/os/win32/ngx_process.c b/src/os/win32/ngx_process.c
new file mode 100644
index 0000000..e3a2786
--- /dev/null
+++ b/src/os/win32/ngx_process.c
@@ -0,0 +1,9 @@
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+ngx_pid_t ngx_exec(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx)
+{
+    return /* STUB */ 0;
+}
diff --git a/src/os/win32/ngx_process.h b/src/os/win32/ngx_process.h
index a4d4bbc..35d9bb9 100644
--- a/src/os/win32/ngx_process.h
+++ b/src/os/win32/ngx_process.h
@@ -2,7 +2,29 @@
 #define _NGX_PROCESS_H_INCLUDED_
 
 
-#define ngx_getpid  GetCurrentProcessId
+typedef DWORD        ngx_pid_t;
+
+#define ngx_getpid   GetCurrentProcessId
+#define ngx_log_pid  ngx_pid
+
+
+typedef struct {
+    char         *path;
+    char         *name;
+    char *const  *argv;
+    char *const  *envp;
+} ngx_exec_ctx_t;
+
+
+#define NGX_PROCESS_SINGLE   0
+#define NGX_PROCESS_MASTER   1
+#define NGX_PROCESS_WORKER   2
+
+
+ngx_pid_t ngx_exec(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx);
+
+
+extern ngx_pid_t     ngx_pid;
 
 
 #endif /* _NGX_PROCESS_H_INCLUDED_ */
diff --git a/src/os/win32/ngx_process_cycle.c b/src/os/win32/ngx_process_cycle.c
new file mode 100644
index 0000000..8ffef52
--- /dev/null
+++ b/src/os/win32/ngx_process_cycle.c
@@ -0,0 +1,28 @@
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_event.h>
+
+
+#if 0
+
+ngx_int_t     ngx_process;
+ngx_pid_t     ngx_pid;
+ngx_pid_t     ngx_new_binary;
+ngx_int_t     ngx_inherited;
+
+sig_atomic_t  ngx_reap;
+sig_atomic_t  ngx_timer;
+sig_atomic_t  ngx_terminate;
+sig_atomic_t  ngx_quit;
+sig_atomic_t  ngx_noaccept;
+sig_atomic_t  ngx_reconfigure;
+sig_atomic_t  ngx_reopen;
+sig_atomic_t  ngx_change_binary;
+
+#endif
+
+
+void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx)
+{
+}
diff --git a/src/os/win32/ngx_process_cycle.h b/src/os/win32/ngx_process_cycle.h
new file mode 100644
index 0000000..c863b62
--- /dev/null
+++ b/src/os/win32/ngx_process_cycle.h
@@ -0,0 +1,40 @@
+#ifndef _NGX_PROCESS_CYCLE_H_INCLUDED_
+#define _NGX_PROCESS_CYCLE_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+typedef struct {
+     ngx_file_t    pid;
+     char         *name;
+     int           argc;
+     char *const  *argv;
+} ngx_master_ctx_t;
+
+
+#define NGX_PROCESS_SINGLE   0
+#define NGX_PROCESS_MASTER   1
+#define NGX_PROCESS_WORKER   2
+
+
+void ngx_master_process_cycle(ngx_cycle_t *cycle, ngx_master_ctx_t *ctx);
+
+
+extern ngx_int_t       ngx_process;
+extern ngx_pid_t       ngx_pid;
+extern ngx_pid_t       ngx_new_binary;
+extern ngx_int_t       ngx_inherited;
+
+extern sig_atomic_t    ngx_reap;
+extern sig_atomic_t    ngx_timer;
+extern sig_atomic_t    ngx_quit;
+extern sig_atomic_t    ngx_terminate;
+extern sig_atomic_t    ngx_noaccept;
+extern sig_atomic_t    ngx_reconfigure;
+extern sig_atomic_t    ngx_reopen;
+extern sig_atomic_t    ngx_change_binary;
+
+
+#endif /* _NGX_PROCESS_CYCLE_H_INCLUDED_ */
diff --git a/src/os/win32/ngx_thread.h b/src/os/win32/ngx_thread.h
new file mode 100644
index 0000000..cb282fb
--- /dev/null
+++ b/src/os/win32/ngx_thread.h
@@ -0,0 +1,26 @@
+#ifndef _NGX_THREAD_H_INCLUDED_
+#define _NGX_THREAD_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+#if (NGX_THREADS)
+
+#define ngx_thread_volatile  volatile
+
+#else /* !NGX_THREADS */
+
+#define ngx_thread_volatile
+
+#define ngx_log_tid  0
+#define TID_T_FMT    "%d"
+
+#define ngx_mutex_lock(m)     NGX_OK
+#define ngx_mutex_unlock(m)
+
+#endif
+
+
+#endif /* _NGX_THREAD_H_INCLUDED_ */
diff --git a/src/os/win32/ngx_user.h b/src/os/win32/ngx_user.h
new file mode 100644
index 0000000..480a258
--- /dev/null
+++ b/src/os/win32/ngx_user.h
@@ -0,0 +1,14 @@
+#ifndef _NGX_USER_H_INCLUDED_
+#define _NGX_USER_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+/* STUB */
+#define ngx_uid_t  ngx_int_t
+#define ngx_gid_t  ngx_int_t
+
+
+#endif /* _NGX_USER_H_INCLUDED_ */
diff --git a/src/os/win32/ngx_win32_config.h b/src/os/win32/ngx_win32_config.h
index 7b1fd13..00f6426 100644
--- a/src/os/win32/ngx_win32_config.h
+++ b/src/os/win32/ngx_win32_config.h
@@ -4,8 +4,6 @@
 
 #define WIN32       1
 
-#define NGX_WIN_NT  200000
-
 #define STRICT
 #define WIN32_LEAN_AND_MEAN
 
@@ -36,16 +34,19 @@
 #pragma warning(disable:4127)
 #endif
 
+#include <ngx_auto_config.h>
+
 
 #define ngx_inline   __inline
 
 
-#if 0
-/* owc have not __int32 */
+#if 1
 typedef unsigned __int32  uint32_t;
 #else
+/* OWC has not __int32 */
 typedef unsigned int      uint32_t;
 #endif
+
 typedef __int64           int64_t;
 typedef unsigned __int64  uint64_t;
 typedef u_int             uintptr_t;
@@ -54,6 +55,7 @@
 typedef long              time_t;
 typedef __int64           off_t;
 typedef uint32_t          in_addr_t;
+typedef int               sig_atomic_t;
 
 
 #define OFF_T_FMT         "%I64d"
@@ -61,8 +63,11 @@
 #define SIZE_T_X_FMT      "%x"
 #define PID_T_FMT         "%d"
 #define TIME_T_FMT        "%lu"
+#define PTR_FMT           "%08X"
 
 
+#define NGX_WIN_NT        200000
+
 
 #ifndef HAVE_INHERITED_NONBLOCK
 #define HAVE_INHERITED_NONBLOCK  1
diff --git a/src/os/win32/ngx_wsarecv.c b/src/os/win32/ngx_wsarecv.c
index 2a43498..96fa0ff 100644
--- a/src/os/win32/ngx_wsarecv.c
+++ b/src/os/win32/ngx_wsarecv.c
@@ -20,7 +20,8 @@
 
     rc = WSARecv(c->fd, wsabuf, 1, &bytes, &flags, NULL, NULL);
 
-    ngx_log_debug(c->log, "WSARecv: %d:%d" _ rc _ bytes);
+    ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                   "WSARecv: fd:%d rc:%d %d of %d", c->fd, rc, bytes, size);
 
     rev = c->read;
 
@@ -29,12 +30,14 @@
         err = ngx_socket_errno;
 
         if (err == WSAEWOULDBLOCK) {
-            ngx_log_error(NGX_LOG_INFO, c->log, err, "WSARecv() EAGAIN");
+            ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
+                           "WSARecv() not ready");
             return NGX_AGAIN;
         }
 
         rev->error = 1;
-        ngx_log_error(NGX_LOG_CRIT, c->log, err, "WSARecv() failed");
+        ngx_connection_error(c, err, "WSARecv() failed");
+
         return NGX_ERROR;
     }
 
@@ -63,19 +66,19 @@
     rev = c->read;
 
     if (!rev->ready) {
-        ngx_log_error(NGX_LOG_ALERT, rev->log, 0, "SECOND WSA POST");
+        ngx_log_error(NGX_LOG_ALERT, rev->log, 0, "second wsa post");
         return NGX_AGAIN;
     }
 
-    ngx_log_debug(c->log, "rev->complete: %d" _ rev->complete);
+    ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                   "rev->complete: %d", rev->complete);
 
     if (rev->complete) {
         rev->complete = 0;
 
         if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
             if (rev->ovlp.error) {
-                ngx_log_error(NGX_LOG_ERR, c->log, rev->ovlp.error,
-                              "WSARecv() failed");
+                ngx_connection_error(c, rev->ovlp.error, "WSARecv() failed");
                 return NGX_ERROR;
             }
 
@@ -84,9 +87,8 @@
 
         if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &rev->ovlp,
                                    &bytes, 0, NULL) == 0) {
-            ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
-                         "WSARecv() or WSAGetOverlappedResult() failed");
-
+            ngx_connection_error(c, ngx_socket_errno,
+                               "WSARecv() or WSAGetOverlappedResult() failed");
             return NGX_ERROR;
         }
 
@@ -104,7 +106,8 @@
 
     rev->complete = 0;
 
-    ngx_log_debug(c->log, "WSARecv: %d:%d" _ rc _ bytes);
+    ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                   "WSARecv: fd:%d rc:%d %d of %d", c->fd, rc, bytes, size);
 
     if (rc == -1) {
         err = ngx_socket_errno;
@@ -114,7 +117,7 @@
         }
 
         rev->error = 1;
-        ngx_log_error(NGX_LOG_CRIT, c->log, err, "WSARecv() failed");
+        ngx_connection_error(c, err, "WSARecv() failed");
         return NGX_ERROR;
     }
 
diff --git a/src/os/win32/ngx_wsarecv_chain.c b/src/os/win32/ngx_wsarecv_chain.c
index edc4421..afdfa05 100644
--- a/src/os/win32/ngx_wsarecv_chain.c
+++ b/src/os/win32/ngx_wsarecv_chain.c
@@ -40,7 +40,9 @@
         chain = chain->next;
     }
 
-ngx_log_debug(c->log, "WSARecv: %d:%d" _ io.nelts _ wsabuf->len);
+    ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
+                   "WSARecv: %d:%d", io.nelts, wsabuf->len);
+
 
     rc = WSARecv(c->fd, io.elts, io.nelts, &bytes, &flags, NULL, NULL);
 
@@ -51,12 +53,13 @@
         err = ngx_socket_errno;
 
         if (err == WSAEWOULDBLOCK) {
-            ngx_log_error(NGX_LOG_INFO, c->log, err, "WSARecv() EAGAIN");
+            ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
+                           "WSARecv() not ready");
             return NGX_AGAIN;
         }
 
         rev->error = 1;
-        ngx_log_error(NGX_LOG_CRIT, c->log, err, "WSARecv() failed");
+        ngx_connection_error(c, err, "WSARecv() failed");
         return NGX_ERROR;
     }
 
diff --git a/src/os/win32/ngx_wsasend_chain.c b/src/os/win32/ngx_wsasend_chain.c
index 438f3db..a52296a 100644
--- a/src/os/win32/ngx_wsasend_chain.c
+++ b/src/os/win32/ngx_wsasend_chain.c
@@ -53,18 +53,19 @@
         err = ngx_errno;
 
         if (err == WSAEWOULDBLOCK) {
-            ngx_log_error(NGX_LOG_INFO, c->log, err, "WSASend() EAGAIN");
+            ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
+                           "WSASend() not ready");
             wev->ready = 0;
             return in;
 
         } else {
             wev->error = 1;
-            ngx_log_error(NGX_LOG_CRIT, c->log, err, "WSASend() failed");
+            ngx_connection_error(c, err, "WSASend() failed");
             return NGX_CHAIN_ERROR;
         }
     }
 
-    ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "WSASend(): %d", sent);
+    ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "WSASend: %d", sent);
 
     c->sent += sent;
 
@@ -162,7 +163,7 @@
 
             } else {
                 wev->error = 1;
-                ngx_log_error(NGX_LOG_CRIT, c->log, err, "WSASend() failed");
+                ngx_connection_error(c, err, "WSASend() failed");
                 return NGX_CHAIN_ERROR;
             }
  
@@ -187,8 +188,7 @@
 
         if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
             if (wev->ovlp.error) {
-                ngx_log_error(NGX_LOG_ERR, c->log, wev->ovlp.error,
-                              "WSASend() failed");
+                ngx_connection_error(c, wev->ovlp.error, "WSASend() failed");
                 return NGX_CHAIN_ERROR;
             }
 
@@ -197,15 +197,15 @@
         } else {
             if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &wev->ovlp,
                                        &sent, 0, NULL) == 0) {
-                ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
-                             "WSASend() or WSAGetOverlappedResult() failed");
+                ngx_connection_error(c, ngx_socket_errno,
+                               "WSASend() or WSAGetOverlappedResult() failed");
     
                 return NGX_CHAIN_ERROR;
             }
         }
     }
 
-    ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "WSASend(): %d", sent);
+    ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "WSASend: %d", sent);
 
     c->sent += sent;