1 files changed, 84 insertions, 0 deletions
diff --git a/src/test/nxt_gmtime_test.c b/src/test/nxt_gmtime_test.c
new file mode 100644
index 00000000..cec81ab4
--- /dev/null
+++ b/src/test/nxt_gmtime_test.c
@@ -0,0 +1,84 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) NGINX, Inc.
+ */
+
+#include <nxt_main.h>
+#include "nxt_tests.h"
+
+
+#if (NXT_TIME_T_SIZE == 4)
+
+/* A 86400-fold number below 2^31. */
+#define NXT_GMTIME_MAX  2147472000
+
+#else
+/*
+ * March 19, 29398 is maximum valid data if nxt_uint_t
+ * is 4 bytes size whilst nxt_time_t is 8 bytes size.
+ */
+#define NXT_GMTIME_MAX  865550793600
+#endif
+
+
+nxt_int_t
+nxt_gmtime_test(nxt_thread_t *thr)
+{
+    struct tm   tm0, *tm1;
+    nxt_time_t  s;
+    nxt_nsec_t  start, end;
+
+    nxt_thread_time_update(thr);
+    nxt_log_error(NXT_LOG_NOTICE, thr->log, "gmtime test started");
+
+    for (s = 0; s < NXT_GMTIME_MAX; s += 86400) {
+
+        nxt_gmtime(s, &tm0);
+        tm1 = gmtime(&s);
+
+        if (tm0.tm_mday != tm1->tm_mday
+            || tm0.tm_mon != tm1->tm_mon
+            || tm0.tm_year != tm1->tm_year
+            || tm0.tm_yday != tm1->tm_yday
+            || tm0.tm_wday != tm1->tm_wday)
+        {
+            nxt_log_alert(thr->log,
+                          "gmtime test failed: %T @ %02d.%02d.%d",
+                          s, tm1->tm_mday, tm1->tm_mon + 1,
+                          tm1->tm_year + 1900);
+            return NXT_ERROR;
+        }
+    }
+
+
+    nxt_thread_time_update(thr);
+    start = nxt_thread_monotonic_time(thr);
+
+    for (s = 0; s < 10000000; s++) {
+        nxt_gmtime(s, &tm0);
+    }
+
+    nxt_thread_time_update(thr);
+    end = nxt_thread_monotonic_time(thr);
+
+    nxt_log_error(NXT_LOG_NOTICE, thr->log, "nxt_gmtime(): %0.1fns",
+                  (end - start) / 10000000.0);
+
+
+    nxt_thread_time_update(thr);
+    start = nxt_thread_monotonic_time(thr);
+
+    for (s = 0; s < 10000000; s++) {
+        (void) gmtime(&s);
+    }
+
+    nxt_thread_time_update(thr);
+    end = nxt_thread_monotonic_time(thr);
+
+    nxt_log_error(NXT_LOG_NOTICE, thr->log, "gmtime(): %0.1fns",
+                  (end - start) / 10000000.0);
+
+    nxt_log_error(NXT_LOG_NOTICE, thr->log, "gmtime test passed");
+    return NXT_OK;
+}