pg_test_timing: Add NLS

Also straighten out use of time unit abbreviations a bit.
Reviewed-by: Michael Paquier <michael.paquier@gmail.com>

doc/src/sgml/ref/pgtesttiming.sgml

@@ -96,9 +96,9 @@
 
 <screen>
 Testing timing overhead for 3 seconds.
-Per loop time including overhead: 35.96 nsec
+Per loop time including overhead: 35.96 ns
 Histogram of timing durations:
-< usec   % of total      count
+  < us   % of total      count
      1     96.40465   80435604
      2      3.59518    2999652
      4      0.00015        126
@@ -109,9 +109,9 @@ Histogram of timing durations:
 
   <para>
    Note that different units are used for the per loop time than the
-   histogram. The loop can have resolution within a few nanoseconds (nsec),
+   histogram. The loop can have resolution within a few nanoseconds (ns),
    while the individual timing calls can only resolve down to one microsecond
-   (usec).
+   (us).
   </para>
 
  </refsect2>
@@ -157,9 +157,9 @@ EXPLAIN ANALYZE SELECT COUNT(*) FROM t;
 tsc hpet acpi_pm
 # echo acpi_pm > /sys/devices/system/clocksource/clocksource0/current_clocksource
 # pg_test_timing
-Per loop time including overhead: 722.92 nsec
+Per loop time including overhead: 722.92 ns
 Histogram of timing durations:
-< usec   % of total      count
+  < us   % of total      count
      1     27.84870    1155682
      2     72.05956    2990371
      4      0.07810       3241
@@ -170,7 +170,7 @@ Histogram of timing durations:
 
   <para>
    In this configuration, the sample <command>EXPLAIN ANALYZE</command> above
-   takes 115.9 ms.  That's 1061 nsec of timing overhead, again a small multiple
+   takes 115.9 ms.  That's 1061 ns of timing overhead, again a small multiple
    of what's measured directly by this utility.  That much timing overhead
    means the actual query itself is only taking a tiny fraction of the
    accounted for time, most of it is being consumed in overhead instead.  In
@@ -211,7 +211,7 @@ $ pg_test_timing
 Testing timing overhead for 3 seconds.
 Per timing duration including loop overhead: 97.75 ns
 Histogram of timing durations:
-< usec   % of total      count
+  < us   % of total      count
      1     90.23734   27694571
      2      9.75277    2993204
      4      0.00981       3010

src/bin/pg_test_timing/nls.mk

+# src/bin/pg_test_timing/nls.mk
+CATALOG_NAME     = pg_test_timing
+AVAIL_LANGUAGES  =
+GETTEXT_FILES    = pg_test_timing.c

src/bin/pg_test_timing/pg_test_timing.c

@@ -25,6 +25,7 @@ main(int argc, char *argv[])
 {
 	uint64		loop_count;
 
+	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_test_timing"));
 	progname = get_progname(argv[0]);
 
 	handle_args(argc, argv);
@@ -51,7 +52,7 @@ handle_args(int argc, char *argv[])
 	{
 		if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
 		{
-			printf("Usage: %s [-d DURATION]\n", progname);
+			printf(_("Usage: %s [-d DURATION]\n"), progname);
 			exit(0);
 		}
 		if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
@@ -71,7 +72,7 @@ handle_args(int argc, char *argv[])
 				break;
 
 			default:
-				fprintf(stderr, "Try \"%s --help\" for more information.\n",
+				fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
 						progname);
 				exit(1);
 				break;
@@ -81,23 +82,26 @@ handle_args(int argc, char *argv[])
 	if (argc > optind)
 	{
 		fprintf(stderr,
-				"%s: too many command-line arguments (first is \"%s\")\n",
+				_("%s: too many command-line arguments (first is \"%s\")\n"),
 				progname, argv[optind]);
-		fprintf(stderr, "Try \"%s --help\" for more information.\n",
+		fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
 				progname);
 		exit(1);
 	}
 
 	if (test_duration > 0)
 	{
-		printf("Testing timing overhead for %d seconds.\n", test_duration);
+		printf(ngettext("Testing timing overhead for %d second.\n",
+						"Testing timing overhead for %d seconds.\n",
+						test_duration),
+			   test_duration);
 	}
 	else
 	{
 		fprintf(stderr,
-			"%s: duration must be a positive integer (duration is \"%d\")\n",
+				_("%s: duration must be a positive integer (duration is \"%d\")\n"),
 				progname, test_duration);
-		fprintf(stderr, "Try \"%s --help\" for more information.\n",
+		fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
 				progname);
 		exit(1);
 	}
@@ -133,8 +137,8 @@ test_timing(int32 duration)
 		/* Did time go backwards? */
 		if (diff < 0)
 		{
-			printf("Detected clock going backwards in time.\n");
-			printf("Time warp: %d microseconds\n", diff);
+			fprintf(stderr, _("Detected clock going backwards in time.\n"));
+			fprintf(stderr, _("Time warp: %d ms\n"), diff);
 			exit(1);
 		}
 
@@ -157,7 +161,7 @@ test_timing(int32 duration)
 
 	INSTR_TIME_SUBTRACT(end_time, start_time);
 
-	printf("Per loop time including overhead: %0.2f nsec\n",
+	printf(_("Per loop time including overhead: %0.2f ns\n"),
 		   INSTR_TIME_GET_DOUBLE(end_time) * 1e9 / loop_count);
 
 	return loop_count;
@@ -173,8 +177,8 @@ output(uint64 loop_count)
 	while (max_bit > 0 && histogram[max_bit] == 0)
 		max_bit--;
 
-	printf("Histogram of timing durations:\n");
-	printf("%6s   %10s %10s\n", "< usec", "% of total", "count");
+	printf(_("Histogram of timing durations:\n"));
+	printf("%6s   %10s %10s\n", _("< us"), _("% of total"), _("count"));
 
 	for (i = 0; i <= max_bit; i++)
 	{