Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 275 insertions, 0 deletions

diff --git a/REORG.TODO/benchtests/bench-strcoll.c b/REORG.TODO/benchtests/bench-strcoll.c
new file mode 100644
index 0000000000..cd71e98c48
--- /dev/null
+++ b/REORG.TODO/benchtests/bench-strcoll.c
@@ -0,0 +1,275 @@
+/* Measure strcoll execution time in different locales.
+   Copyright (C) 2015-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <assert.h>
+#include <stdlib.h>
+#include <locale.h>
+#include <unistd.h>
+#include "json-lib.h"
+#include "bench-timing.h"
+#include <string.h>
+
+/* Many thanks to http://generator.lorem-ipsum.info/  */
+#define INPUT_PREFIX "strcoll-inputs/"
+
+static const char *const input_files[] = {
+  "filelist#C",
+  "filelist#en_US.UTF-8",
+  "lorem_ipsum#vi_VN.UTF-8",
+  "lorem_ipsum#ar_SA.UTF-8",
+  "lorem_ipsum#en_US.UTF-8",
+  "lorem_ipsum#zh_CN.UTF-8",
+  "lorem_ipsum#cs_CZ.UTF-8",
+  "lorem_ipsum#en_GB.UTF-8",
+  "lorem_ipsum#da_DK.UTF-8",
+  "lorem_ipsum#pl_PL.UTF-8",
+  "lorem_ipsum#fr_FR.UTF-8",
+  "lorem_ipsum#pt_PT.UTF-8",
+  "lorem_ipsum#el_GR.UTF-8",
+  "lorem_ipsum#ru_RU.UTF-8",
+  "lorem_ipsum#he_IL.UTF-8",
+  "lorem_ipsum#es_ES.UTF-8",
+  "lorem_ipsum#hi_IN.UTF-8",
+  "lorem_ipsum#sv_SE.UTF-8",
+  "lorem_ipsum#hu_HU.UTF-8",
+  "lorem_ipsum#tr_TR.UTF-8",
+  "lorem_ipsum#is_IS.UTF-8",
+  "lorem_ipsum#it_IT.UTF-8",
+  "lorem_ipsum#sr_RS.UTF-8",
+  "lorem_ipsum#ja_JP.UTF-8"
+};
+
+#define TEXTFILE_DELIMITER " \n\r\t.,?!"
+
+static char *
+read_file (const char *filename)
+{
+  struct stat stats;
+  char *buffer = NULL;
+  int fd = open (filename, O_CLOEXEC);
+
+  if (fd >= 0)
+    {
+      if (fstat (fd, &stats) == 0)
+	{
+	  buffer = malloc (stats.st_size + 1);
+	  if (buffer)
+	    {
+	      if (read (fd, buffer, stats.st_size) == stats.st_size)
+		buffer[stats.st_size] = '\0';
+	      else
+		{
+		  free (buffer);
+		  buffer = NULL;
+		}
+	    }
+	}
+      close (fd);
+    }
+
+  return buffer;
+}
+
+static size_t
+count_words (const char *text, const char *delim)
+{
+  size_t wordcount = 0;
+  char *tmp = strdup (text);
+
+  char *token = strtok (tmp, delim);
+  while (token != NULL)
+    {
+      if (*token != '\0')
+	wordcount++;
+      token = strtok (NULL, delim);
+    }
+
+  free (tmp);
+  return wordcount;
+}
+
+typedef struct
+{
+  size_t size;
+  char **words;
+} word_list;
+
+static word_list *
+new_word_list (size_t size)
+{
+  word_list *list = malloc (sizeof (word_list));
+  assert (list != NULL);
+  list->size = size;
+  list->words = malloc (size * sizeof (char *));
+  assert (list->words != NULL);
+  return list;
+}
+
+static word_list *
+str_word_list (const char *str, const char *delim)
+{
+  size_t n = 0;
+  word_list *list = new_word_list (count_words (str, delim));
+
+  char *toks = strdup (str);
+  char *word = strtok (toks, delim);
+  while (word != NULL && n < list->size)
+    {
+      if (*word != '\0')
+	list->words[n++] = strdup (word);
+      word = strtok (NULL, delim);
+    }
+
+  free (toks);
+  return list;
+}
+
+static word_list *
+copy_word_list (const word_list *list)
+{
+  size_t i;
+  word_list *copy = new_word_list (list->size);
+
+  for (i = 0; i < list->size; i++)
+    copy->words[i] = strdup (list->words[i]);
+
+  return copy;
+}
+
+static void
+free_word_list (word_list *list)
+{
+  size_t i;
+  for (i = 0; i < list->size; i++)
+    free (list->words[i]);
+
+  free (list->words);
+  free (list);
+}
+
+static int
+compare_words (const void *a, const void *b)
+{
+  const char *s1 = *(char **) a;
+  const char *s2 = *(char **) b;
+  return strcoll (s1, s2);
+}
+
+#undef INNER_LOOP_ITERS
+#define INNER_LOOP_ITERS 16
+
+static void
+bench_list (json_ctx_t *json_ctx, word_list *list)
+{
+  size_t i;
+  timing_t start, stop, cur;
+
+  word_list **tests = malloc (INNER_LOOP_ITERS * sizeof (word_list *));
+  assert (tests != NULL);
+  for (i = 0; i < INNER_LOOP_ITERS; i++)
+    tests[i] = copy_word_list (list);
+
+  TIMING_NOW (start);
+  for (i = 0; i < INNER_LOOP_ITERS; i++)
+    qsort (tests[i]->words, tests[i]->size, sizeof (char *), compare_words);
+  TIMING_NOW (stop);
+
+  TIMING_DIFF (cur, start, stop);
+  setlocale (LC_ALL, "en_US.UTF-8");
+  json_attr_double (json_ctx, "duration", cur);
+  json_attr_double (json_ctx, "iterations", i);
+  json_attr_double (json_ctx, "mean", (double) cur / i);
+
+  for (i = 0; i < INNER_LOOP_ITERS; i++)
+    free_word_list (tests[i]);
+  free (tests);
+}
+
+typedef enum
+{
+  OK,
+  ERROR_FILENAME,
+  ERROR_LOCALE,
+  ERROR_IO
+} result_t;
+
+static result_t
+bench_file (json_ctx_t *json_ctx, const char *testname, const char *filename,
+	    const char *locale)
+{
+  if (setlocale (LC_ALL, locale) == NULL)
+    return ERROR_LOCALE;
+
+  char *text = read_file (filename);
+  if (text == NULL)
+    return ERROR_IO;
+
+  word_list *list = str_word_list (text, TEXTFILE_DELIMITER);
+
+  json_attr_object_begin (json_ctx, testname);
+  bench_list (json_ctx, list);
+  json_attr_object_end (json_ctx);
+
+  free_word_list (list);
+  free (text);
+  return OK;
+}
+
+int
+main (void)
+{
+  json_ctx_t *json_ctx = malloc (sizeof (json_ctx_t));
+  assert (json_ctx != NULL);
+  json_init (json_ctx, 2, stdout);
+  json_attr_object_begin (json_ctx, "strcoll");
+
+  size_t i;
+  result_t result = OK;
+  for (i = 0; i < (sizeof (input_files) / sizeof (input_files[0])); i++)
+    {
+      char *locale = strchr (input_files[i], '#');
+      if (locale == NULL)
+	{
+	  printf ("Failed to get locale from filename %s, aborting!\n",
+		  input_files[i]);
+	  return ERROR_FILENAME;
+	}
+
+      char *filename;
+      asprintf (&filename, INPUT_PREFIX "%s", input_files[i]);
+      result = bench_file (json_ctx, input_files[i], filename, locale + 1);
+
+      if (result != OK)
+	{
+	  if (result == ERROR_LOCALE)
+	    printf ("Failed to set locale %s, aborting!\n", locale);
+	  else if (result == ERROR_IO)
+	    printf ("Failed to read file %s, aborting!\n", filename);
+	  free (filename);
+	  goto out;
+	}
+      free (filename);
+    }
+
+out:
+  json_attr_object_end (json_ctx);
+  free (json_ctx);
+  return result;
+}