[file-roller: 2/8] Add function to define thread count

[Paolo Bacchilega <paobac src gnome org>]

commit d9bf793c50e71372c112d6fbe547640bc7330d87
Author: Julian Groß <firedefender1 googlemail com>
Date:   Sun Mar 14 20:03:34 2021 +0100

    Add function to define thread count

 src/fr-thread-count.c | 36 ++++++++++++++++++++++++++++++++++++
 src/fr-thread-count.h | 29 +++++++++++++++++++++++++++++
 src/meson.build       |  1 +
 3 files changed, 66 insertions(+)
---
diff --git a/src/fr-thread-count.c b/src/fr-thread-count.c
new file mode 100644
index 00000000..800144d1
--- /dev/null
+++ b/src/fr-thread-count.c
@@ -0,0 +1,36 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+
+/*
+ *  File-Roller
+ *
+ *  Copyright (C) 2021 Free Software Foundation, Inc.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include "fr-thread-count.h"
+
+gchar *
+fr_get_thread_count (void)
+{
+       gchar *cpus;
+       if (g_get_num_processors() >= 8)
+               cpus = g_strdup_printf("%u", g_get_num_processors() - 2);
+       else if (g_get_num_processors() >= 4)
+               cpus = g_strdup_printf("%u", g_get_num_processors() - 1);
+       else
+               cpus = g_strdup_printf("%u", g_get_num_processors());
+       return cpus;
+}
diff --git a/src/fr-thread-count.h b/src/fr-thread-count.h
new file mode 100644
index 00000000..a8f34aef
--- /dev/null
+++ b/src/fr-thread-count.h
@@ -0,0 +1,29 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+
+/*
+ *  File-Roller
+ *
+ *  Copyright (C) 2021 Free Software Foundation, Inc.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef FR_THREAD_COUNT_H
+#define FR_THREAD_COUNT_H
+
+#include <glib.h>
+
+gchar * fr_get_thread_count (void);
+
+#endif /* FR_THREAD_COUNT_H */
diff --git a/src/meson.build b/src/meson.build
index 8083aacc..7e3cdee3 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -44,6 +44,7 @@ source_files = files(
   'fr-location-bar.c',
   'fr-new-archive-dialog.c',
   'fr-process.c',
+  'fr-thread-count.c',
   'fr-window-actions-callbacks.c',
   'fr-window.c',
   'gio-utils.c',