Implemented basic statistics API.

src/nxt_status.h

@@ -0,0 +1,32 @@
+
+/*
+ * Copyright (C) NGINX, Inc.
+ */
+
+#ifndef _NXT_STATUS_H_INCLUDED_
+#define _NXT_STATUS_H_INCLUDED_
+
+
+typedef struct {
+    nxt_str_t         name;
+    uint32_t          active_requests;
+    uint32_t          pending_processes;
+    uint32_t          processes;
+    uint32_t          idle_processes;
+} nxt_status_app_t;
+
+
+typedef struct {
+    uint64_t          accepted_conns;
+    uint64_t          idle_conns;
+    uint64_t          closed_conns;
+
+    size_t            apps_count;
+    nxt_status_app_t  apps[];
+} nxt_status_report_t;
+
+
+nxt_conf_value_t *nxt_status_get(nxt_status_report_t *report, nxt_mp_t *mp);
+
+
+#endif /* _NXT_STATUS_H_INCLUDED_ */